[Lift] Re: More dynamic Lift

2010-03-08 Thread harryh
What's the advantage of this sort of setup over using JavaRebel?

-harryh

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[Lift] conflicting slf4j versions when using M3 with smile

2010-03-04 Thread harryh
Smile (a scala memcached client) is pulling in slf4j-jdk14-1.5.2.jar,
and lift-util is pulling in slf4j-log4j12-1.5.11.jar.

What is the best way to deal with this conflict?

-harryh

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[Lift] Re: conflicting slf4j versions when using M3 with smile

2010-03-04 Thread harryh
OK, did that (like so in sbt):

override def ivyXML =
dependencies
  dependency org=net.lag name=smile rev=0.8.12
exclude module=slf4j-jdk14/
  /dependency
/dependencies

I'm also getting this error when running my app from within sbt just
javarebel (possibly this isn't a big issue, but the error is
disconcerting):

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/harryh/foursquare.web/
lib_managed/compile/slf4j-log4j12-1.5.11.jar!/org/slf4j/impl/
StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/harryh/foursquare.web/target/
webapp/WEB-INF/lib/slf4j-log4j12-1.5.11.jar!/org/slf4j/impl/
StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.

On Mar 4, 2:33 pm, Indrajit Raychaudhuri indraj...@gmail.com wrote:
 You can modify smile dependency declaration to exclude slf4j-jdk14 as thus:

      dependency
        groupIdnet.lag/groupId
        artifactIdsmile/artifactId
        exclusions
          exclusion
            groupIdorg.slf4j/groupId
            artifactIdslf4j-jdk14/artifactId
          /exclusion
        /exclusions
      /dependency

 Or alternately, apply the exclusion of slf4j-log4j12 in the lift-util
 dependency section if you prefer to use slf4j-jdk14 instead.

 Cheers, Indrajit

 On 05/03/10 12:51 AM, harryh wrote:



  Smile (a scala memcached client) is pulling in slf4j-jdk14-1.5.2.jar,
  and lift-util is pulling in slf4j-log4j12-1.5.11.jar.

  What is the best way to deal with this conflict?

  -harryh

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[Lift] Re: conflicting slf4j versions when using M3 with smile

2010-03-04 Thread harryh
 Hmm, slf4j-log4j12-1.5.11.jar ends up being in the classpath twice (from
 /Users/harryh/foursquare.web/lib_managed/compile and
 /Users/harryh/foursquare.web/target/webapp/WEB-INF/lib).

 A quick fix would be to apply exclusion of slf4j-log4j12 in lift-util
 declaration. This will prevent having slf4j-log4j12-1.5.11.jar under
 target/webapp/WEB-INF/lib.

Then I don't get slf4j-log4j12 at all and I get exceptions:

java.lang.NoClassDefFoundError: org/apache/log4j/Logger
at net.liftweb.util.LogBoot$.net$liftweb$util$LogBoot$
$_logger(Log.scala:207)
at net.liftweb.util.LogBoot$$anonfun$6.apply(Log.scala:209)
at net.liftweb.util.LogBoot$$anonfun$6.apply(Log.scala:209)
at net.liftweb.util.Log$.rootLogger(Log.scala:85)
at net.liftweb.util.Log$.warn(Log.scala:123)
at net.liftweb.http.LiftServlet.service(LiftServlet.scala:89)

Maybe this is a weird SBT problem?

-harryh

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[Lift] Re: conflicting slf4j versions when using M3 with smile

2010-03-04 Thread harryh
 I tend to think the underlying problem (two slf4j-log4j12 jars on the
 classpath) is in SBT, so maybe you should ask on the sbt list.

Ya, I'm pretty sure you're right.  I posted there:

http://groups.google.com/group/simple-build-tool/browse_thread/thread/4d088713c85dbdb

-harryh

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[Lift] Add lock() to MetaMapper

2010-02-26 Thread harryh
Sent this to dpp the other day with the idea that it might be a useful
addition to MetaMapper.  Would others find this useful?  (It's a tad
PostgreSQL specific in its current form).

object LockMode extends Enumeration {
 type LockMode = Value
 val AccessShare = Value(ACCESS SHARE)
 val RowShare = Value(ROW SHARE)
 val RowExclusive = Value(ROW EXCLUSIVE)
 val ShareUpdateExclusive = Value(SHARE UPDATE EXCLUSIVE)
 val Share = Value(SHARE)
 val ShareRowExclusive = Value(SHARE ROW EXCLUSIVE)
 val Exclusive = Value(EXCLUSIVE)
 val AccessExclusive = Value(ACCESS EXCLUSIVE)
}
import LockMode._

trait Lockable[T : Mapper[T]] extends MetaMapper[T] {
 self: T =

 def lock[T](mode: LockMode)(func: = T) = {
   DB.use(dbDefaultConnectionIdentifier)  { conn =
 DB.statement(conn)(_.execute(LOCK TABLE +dbTableName+ IN
+mode.toString+ MODE))
 func
   }
 }
}

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[Lift] Re: Potential breaking change: MappedField.name, affects Mapper JSON

2010-02-18 Thread harryh
If this does happen please take care to include this information in
the release notes for M3 (or whatever milestone first has this change)
as people using json serialization for caching purposes will need to
invalidate their caches.

Putting the note in BIG CAPITAL LETTERS might be a good idea.

-harryh

On Feb 18, 6:22 am, Jeppe Nejsum Madsen je...@ingolfs.dk wrote:
 Hi,

 As part of 
 fixinghttps://www.assembla.com/spaces/liftweb/tickets/155-lift-mapper-%28re...
 , I would like to change the semantics of MappedField.name slightly:

 Currently, the name is always lowercased, ie:

 class SampleModel extends KeyedMapper[Long, SampleModel] {
   object id extends MappedLongIndex(this)
   object firstName extends MappedString(this, 32)
   object moose extends MappedNullableLong(this)
   object notNull extends MappedString(this, 32)

 }

 firstName.name == firstname  notNull.name == notnull  id.name==id

 I would like to have name preserve the case of the field such that:

 firstName.name == firstName  notNull.name == notNull  id.name==id

 Reasons:

 1) More consistent. css styles, default column headers etc based on name now 
 follows the actual
    field name
 2) Easier to implement #155 :-)

 name is used when serializing a Mapped object as JSON. So the JSON
 representation will be changed (unless we lowercase the name only when
 creating JSON, but this goes against 1)

 Now:
 {
   $persisted:true,
   id:1,
   firstname:Elwood,
   moose:null,
   notnull:

 }

 After proposed change:
 {
   $persisted:true,
   id:1,
   firstName:Elwood,
   moose:null,
   notNull:

 }

 I would like to get a feel for the pain this will cause people

 /Jeppe

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[Lift] Re: Lift Web Framework 2.0 Milestone 2 released

2010-02-11 Thread harryh
Huzzah!

Gonna push the update out to here soon?  http://scala-tools.org/mvnsites/

-harryh

On Feb 11, 1:42 pm, Indrajit Raychaudhuri indraj...@gmail.com wrote:
 The Lift Web Framework team is pleased to announce the framework-2.0-
 M2 release!

 Lift is an expressive and elegant framework for writing web
 applications. Lift stresses the importance of security,
 maintainability, scalability and performance while allowing for high
 levels of developer productivity. Lift is a Scala web framework.

 Changes in this version include:

 New features:
 o Multidimensional arrays supported in JSON serialization and
 extraction  Issue: 279.
 o Enable jQuery version switching in LiftRules  Issue: 311.
 o New LRU Map that works better than Apache LRU map  Issue: 293.
 o Allow thread-local Connection Identerifer resolution  Issue: 314.

 Fixed Bugs:
 o lift-Json doesn't appear to be correctly handling attributes  Issue:
 323.
 o net.liftweb.json.JsonParser.extract fails with List[List[Int]]
 Issue: 279.
 o Streamline JDBC library dependencies  Issue: 307.
 o autocomplete widget - make options settable  Issue: 46.
 o Ajax form submission with multiple submit buttons  Issue: 280.
 o Ajax change from () = Any to () = JsCmd  Issue: 295.
 o Add field-by-field error notifications to CRUDified fields  Issue:
 254.
 o MappedLongForeignKey::asJsonValue should generate JNull  Issue:
 282.
 o Additional tag support for TextileParser  Issue: 284.
 o TextileParser molests divs  Issue: 290.
 o The order of fields is random in Mapper  Issue: 308.
 o How overriding of _showAllTemplate to show a limited number of
 columns  Issue: 315.
 o Control characters in input can lead to Denial of Service attacks
 Issue: 319.

 Changes:
 o JSON object can be extracted into scala.Map (and scala.Map can be
 serialized as JSON object). Recursive types can be serialized.  Issue:
 303.
 o JSON pull parser API  Issue: 333.
 o Make Lift both Scala 2.7 and 2.8 friendly  Issue: 292.
 o Upgrade jQuery to 1.4.1  Issue: 304.

 Have fun!
 -Lift Web Framework team

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[Lift] Re: lifecycle callbacks in record

2010-02-11 Thread harryh
OK kids. Here's a lesson for you. Don't mix Mapper and Record in the
same file! Cause if you do, you might do something like this:

class MCheckin extends MongoRecord[MCheckin] with MongoId[MCheckin]
with LifecycleCallbacks {
}

and wonder why the #$%^*( the callbacks aren't being called.  But
then, after 5 hours of tinkering you finally realize that you were
implementing the mapper LifecycleCallbacks and not the record
LifecycleCallbacks.

-harryh

On Feb 10, 9:10 pm, harryh har...@gmail.com wrote:
 Can anyone give me an example of how to implement a lifecycle callback
 in record?  I can't, for the life of me, get it to work.  Nor does
 there appear to be any documentation at all :(

 -harryh

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[Lift] Re: lifecycle callbacks in record

2010-02-11 Thread harryh
 Do we have to move the common pieces of Mapper and Record into a common
 package?

We don't have to as I have just changed my code to do with
net.lifetweb.record.LifecycleCallbacks and everything is now works
fine.  It might be worth considering though so no one else has the
same problem I did.

-harryh

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[Lift] Re: lifecycle callbacks in record

2010-02-11 Thread harryh
 Yeah that would be a bit of a problem!! Out of interest, what Record backend 
 are you trying to use?

http://wiki.github.com/eltimn/scamongo/

Which needs some work (I have a fork on my local machine that I'm
tinkering with), but mostly seems to be getting the job done.

-harryh

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[Lift] Re: lifecycle callbacks in record

2010-02-11 Thread harryh
Tim (Nelson)

You can expect a ping from me about some stuff I've added getting
pulled back into the main branch.  It's all pretty small.

1) Implemeted bulkDelete_!!
2) Some stuff to make List fields work a bit better when they are a
List[DBRecord]
3) Some code for special handling of optional fields (using Box)
(don't save anything to the datastore if you have an empty box)
4) A change to DBRef to change the fetch method name to obj (to make
it more like MappedForeignKeys)

Hopefully you'll like the changes.

-harryh

On Feb 11, 5:33 pm, Tim Nelson tnell...@gmail.com wrote:
 At some point I would love to. I'm not sure it's quite ready for that
 yet though.

 As soon as I finish the project I'm working on, I hope to be able to
 spend some more time on it. There are still some things that I haven't
 implemented and I want to look closer at the code you wrote for
 couch-db and maybe utilize that.

 Tim

 On Thu, Feb 11, 2010 at 4:25 PM, Ross Mellgren dri...@gmail.com wrote:
  Hey Tim (Nelson),

  Have you thought about bringing scamongo in as part of Lift?

  -Ross

  On Feb 11, 2010, at 5:24 PM, Tim Nelson wrote:

  You should note that only the save and delete callbacks have been
  implemented, but I haven't tested them.

  If you have other requirements, let me know and I can look into it and
  any feedback is welcome.

  Tim akahttp://wiki.github.com/eltimn/

  On Thu, Feb 11, 2010 at 4:17 PM, harryh har...@gmail.com wrote:
  Yeah that would be a bit of a problem!! Out of interest, what Record 
  backend are you trying to use?

 http://wiki.github.com/eltimn/scamongo/

  Which needs some work (I have a fork on my local machine that I'm
  tinkering with), but mostly seems to be getting the job done.

  -harryh

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[Lift] Re: Breaking changes in lift-record 2.0-SNAPSHOT - Optional fields

2010-02-11 Thread harryh
What is the advantage of doing it this way as opposed to having a
collection of Field types who's value is a Box[Whatever]
(OptionalStringField, OptionalLongField, etc).

I'm finding the e-mail you sent to the list moderately confusing.
Maybe it's just that more explanation is needed?

-harryh

On Feb 11, 11:49 pm, Ross Mellgren dri...@gmail.com wrote:
 I just committed a change to lift-record in 2.0-SNAPSHOT that will possibly 
 (probably?) break your build if you use it.

 This change makes it possible to have any record field be optional -- that 
 is, Box[MyType]. You use it like this:

 object MyRecord extends Record[MyRecord] {
     object myNormalField extends StringField(this, 100)
     object myOptionalField extends StringField(this, 100) {
         override def optional_? = true
         override def defaultValueBox = Empty
         override def defaultValue = nothin
     }

 }

 val r: MyRecord

 r.myNormalField.set(Hello) // as before the change
 r.myOptionalField.setBox(Empty)

 r.myNormalField.value == Hello // as before
 r.myNormalField.valueBox == Full(Hello)
 r.myOptionalField.valueBox == Empty
 r.myOptionalField.value == nothin // because defaultValue was used to give 
 back something

 As part of this change, the semantics for field errors has changed somewhat 
 -- hopefully, to be more consistent.

 Previously if you tried to set a field and checkCanWrite_? returned false 
 then an internal flag valueCouldNotBeSet on the field will be raised which 
 makes that field generate a validation error when validate is called on the 
 record. In addition, some fields (but not all) would raise the same flag and 
 return Failure or Empty from setFromString or setFromAny upon being given an 
 invalid value.

 With this change, all types of failure to set now result in the field value 
 becoming a Failure. setFromAny, setFromString, and setBox all return that 
 Failure, while set will return defaultValue (due to its return type.)

 validators and set filters have had their types changed to Boxed equivalents.

 And finally, I made consistent the setFromAny methods of all the built-in 
 field types so that they all follow the same contract. For setFromAny it's 
 essentially accept one of MyType, Box[MyType], Option[MyType], or 
 List[MyType] as well as null, with a default to convert an unknown input to 
 string and use setFromString. For setFromString, it is as before, except if 
 the field is optional_? and the empty string is passed in, that's treated as 
 Empty.

 As I'll mention in another message, I also pushed lift-couchdb to master. I 
 ran the unit tests that I wrote for that, but that doesn't give me full 
 confidence that all the fields are entirely bug free. Similarly I did not 
 test the form generation. If anybody runs into any issues please let me know 
 and I'll fix it as soon as I can. And of course if it causes too much 
 breakage we can revert it back out.

 -Ross

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[Lift] lifecycle callbacks in record

2010-02-10 Thread harryh
Can anyone give me an example of how to implement a lifecycle callback
in record?  I can't, for the life of me, get it to work.  Nor does
there appear to be any documentation at all :(

-harryh

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[Lift] Re: how to set boolean (non-string) value in NodeSeq?

2010-02-10 Thread harryh
Do it XML style:

button disabled=disabled
/button

On Feb 10, 10:56 pm, wm min...@gmail.com wrote:
 def seq(): NodeSeq = {
       button disabled=true
       /button
   }

 it errors out:
 error: in XML literal: ' or  delimited attribute value or '{' scala-
 expr '}' expected

 0 doesn't work either, only string  is accepted.

 Why is there such a restriction? any workaround?

 Thanks.

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[Lift] lift-json serialization

2010-02-08 Thread harryh
A feature request.  Right now I might have a case class like so:

case class User(firstname: String, lastname: String)

which serializes to something like:

{ firstname : Harry, lastname : Heymann }

but I happen to be serializing a lot of People and I hate to use 17
bytes per item for the field names.  I'd really prefer to only use 4:

{ fn : Harry, ln : Heymann }

It seems to me that through clever use of an implicit parameter I
ought to be pass in a Map of field name - shortened names.  Thoughts?

-harryh

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[Lift] Mapper objects deserialized from json have all of their fields marked dirty

2010-02-04 Thread harryh
At least in my use case this is not idea as I am loading JSON
serialized mapper objects from memcached and the fields are not, in
fact, dirty.  There should possibly be some sort of higher level
mechanism that I can use to indicate that this is the case?

-harryh

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[Lift] Re: Mapper objects deserialized from json have all of their fields marked dirty

2010-02-04 Thread harryh
 - Serializing the dirty-state of each field (e.g., field_name_$dirty:
 true)

This further increases the size of the serialized objects which is not
ideal

  - A thread-local flag for the default dirty/clean
   - A global flag indicating that the fields are marked clean/dirty on
   deserialization

And these seem no good due to the user of global variables

What about option 4:

- change the deserialize function to take an extra parameter
indicating whether the fields should be marked dirty or not.

?

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[Lift] use S and templating without state?

2009-12-17 Thread harryh
I have a simple web page that is not based on any session state, only
on the provided params and the contents of the datastore:

http://foursquare.com/iphone/achievements?uid=209cityid=22

Can I serve this page from Lift's statelessDispatchTable and still
using templating (and possibly S?) so that no Lift/Jetty session is
created when serving this page?

-harryh

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[Lift] Re: Lift 1.1-M8

2009-12-14 Thread harryh
Huzzah!
Welcome M8!

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[Lift] S.attrs question

2009-12-14 Thread harryh
lift:OuterSnippet form=POST
  lift:InnerSnippet class=foo style=color:blue

  /lift:InnerSnippet
/lift:OuterSnippet

class InnerSnippet {
  def render(xhtml: NodeSeq) {
// S.attrs will, at this point give me (form, POST), (class, foo),
(style, color:blue).  I only
// want the specific attributes on the lift:InnerSnippet
element.  Is there some way
// to do that?
  }
}

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[Lift] Re: S.attrs question

2009-12-14 Thread harryh
Oh nevermind.  S.currentAttrs is what I want.  Just didn't see it
before.

-harryh

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[Lift] lift-json and illegal field names

2009-12-10 Thread harryh
I feel like there has been a post on this before, but I can't seem to
find it.  How can I construct a case class that can deal with json
like so:

{
  type : image
}

since this won't work (as type is a scala keyword):

case class Foo(type: String)

-harryh

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[Lift] Re: lift-json and illegal field names

2009-12-10 Thread harryh
Thx all!  Just couldn't remember that little trick.

-harryh

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[Lift] Re: Fwd: Watch Foursquare Lift talk live from NY

2009-12-08 Thread harryh
My slide deck (for any that are interested) can be found here:

http://docs.google.com/present/view?id=dcbpz3ck_24f3v83ggz

-harryh

On Dec 8, 12:19 am, Xuefeng Wu ben...@gmail.com wrote:
 6:30 p.m. the time zone is -8:00?

 On Tue, Dec 8, 2009 at 12:58 PM, David Pollak feeder.of.the.be...@gmail.com



  wrote:

  On Mon, Dec 7, 2009 at 8:50 PM, Mateo Barraza 
  mateo.barr...@gmail.comwrote:

  I can't seem to be able to download the talk. Anyone else having problems?

  Yeah...  n8han's uploading the video elsewhere... we'll send around an URL
  once we get one.

  M

  On Mon, Dec 7, 2009 at 7:59 PM, Peter Robinett pe...@bubblefoundry.com
  wrote:
   If you missed the talk you can download it from the same link. It's a
   good one.

   One thing mentioned briefly in the talk that I'd like to know more
   about is oAuth Server code. Is anyone working on that? How can I help?

   Peter

   On Dec 7, 3:16 pm, David Pollak feeder.of.the.be...@gmail.com wrote:
   -- Forwarded message --
   From: Dave Briccetti da...@davebsoft.com
   Date: Mon, Dec 7, 2009 at 3:15 PM
   Subject: Watch Foursquare Lift talk live from NY
   To: Bay Area Scala Enthusiasts scala-b...@googlegroups.com

  http://www.justin.tv/n8han

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[Lift] Re: Sharing data between snippet functions during a single HTTP request

2009-12-07 Thread harryh
Another strategy, different from what Ross suggests, that I have found
useful in some circumstances.  In the view do this:

lift:YourPage
  page:firstsection
firstsection:username/
firstsection:foo/
  /page:firstsection

  page:secondsection
secondsection:username/
secondsection:foo/
  /page:secondsection
/lift:YourPage

Then

class YourPage extends RenderSnippet {
  def render(xhtml: NodeSeq) = {
val user = User.currentUser

def firstSection(xhtml: NodeSeq) = {
  val foo = whatever
  bind(firstsection, xhtml, username - user.name, foo -
foo.name)
}

def secondSection(xhtml: NodeSeq) = {
  val bar = whatever
  bind(firstsection, xhtml, username - user.name, bar -
bar.name)
}

bind(page, xhtml, firstsection - firstSection _,
secondSection - secondSection)
  }
}

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[Lift] lift-json escaping bug

2009-11-30 Thread harryh
scala import net.liftweb.json._
scala val s2 = { \id\: \America\\/New_York\ }
s2: java.lang.String = { id: America\/New_York }

scala JsonParser.parse(s2)
res1: net.liftweb.json.JsonAST.JValue = JObject(List(JField(id,JString
(America\New_York

It should be America/New_York but for some reason getting a \ instead
of a /

-harryh

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[Lift] Re: lift-json escaping bug

2009-11-30 Thread harryh
Yes, what Ross said.  Further, taking a look at JsonParser.scala the
bug appears to be on line ~202 where there are a couple of missing
escape sequences: \/ as well as \f.

-harryh

On Nov 30, 6:20 pm, Ross Mellgren dri...@gmail.com wrote:
 He's double escaping so that scala's string interpretation will put a  
 raw \ in there, so that it's an escaped forward slash (\/) to the JSON  
 parson, as I understand it. The output should be either invalid escape  
 or forward slash, but not backslash unless the input was \\.

 -Ross

 On Nov 30, 2009, at 6:18 PM, Peter Robinett wrote:

  Harry, I think you're double-escaping the slash. This works:
  scala import net.liftweb.json._
  scala val s1 = { \id\: \America/New_York\ }
  s1: java.lang.String = { id: America/New_York }

  scala JsonParser.parse(s1)
  res0: net.liftweb.json.JsonAST.JValue = JObject(List(JField(id,JString
  (America/New_York

  Peter Robinett

  On Nov 30, 2:16 pm, harryh har...@gmail.com wrote:
  scala import net.liftweb.json._
  scala val s2 = { \id\: \America\\/New_York\ }
  s2: java.lang.String = { id: America\/New_York }

  scala JsonParser.parse(s2)
  res1: net.liftweb.json.JsonAST.JValue = JObject(List(JField
  (id,JString
  (America\New_York

  It should be America/New_York but for some reason getting a \ instead
  of a /

  -harryh

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[Lift] Re: lift-json escaping bug

2009-11-30 Thread harryh
Done:

http://github.com/dpp/liftweb/issues/#issue/214

On Nov 30, 6:33 pm, Ross Mellgren dri...@gmail.com wrote:
 If you file an issue on github I'll write up a patch for you tonight.

 -Ross

 On Nov 30, 2009, at 6:30 PM, harryh wrote:

  Yes, what Ross said.  Further, taking a look at JsonParser.scala the
  bug appears to be on line ~202 where there are a couple of missing
  escape sequences: \/ as well as \f.

  -harryh

  On Nov 30, 6:20 pm, Ross Mellgren dri...@gmail.com wrote:
  He's double escaping so that scala's string interpretation will put a
  raw \ in there, so that it's an escaped forward slash (\/) to the  
  JSON
  parson, as I understand it. The output should be either invalid  
  escape
  or forward slash, but not backslash unless the input was \\.

  -Ross

  On Nov 30, 2009, at 6:18 PM, Peter Robinett wrote:

  Harry, I think you're double-escaping the slash. This works:
  scala import net.liftweb.json._
  scala val s1 = { \id\: \America/New_York\ }
  s1: java.lang.String = { id: America/New_York }

  scala JsonParser.parse(s1)
  res0: net.liftweb.json.JsonAST.JValue = JObject(List(JField
  (id,JString
  (America/New_York

  Peter Robinett

  On Nov 30, 2:16 pm, harryh har...@gmail.com wrote:
  scala import net.liftweb.json._
  scala val s2 = { \id\: \America\\/New_York\ }
  s2: java.lang.String = { id: America\/New_York }

  scala JsonParser.parse(s2)
  res1: net.liftweb.json.JsonAST.JValue = JObject(List(JField
  (id,JString
  (America\New_York

  It should be America/New_York but for some reason getting a \  
  instead
  of a /

  -harryh

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[Lift] Re: simple database question

2009-11-26 Thread harryh
Here is what you need for a minimal Person table that contains two
columns: an id for the primary key, and name which is a string:

package com.jacksdomain.model

import net.liftweb.mapper._

class Person extends LongKeyedMapper[Person] with IdPK {
  def getSingleton = Person

  object name extends MappedString(this, 100)
}

object Person extends Person with LongKeyedMetaMapper[Person] {
  override def dbTableName = person
}

You can then do things like this:

val person = Person.find(1)   // retrieve the person with id = 1 from
the database
val person = Person.find(By(Person.name, Jack)) // retrieve the
person with name = Jack from the database
val people = Person.findAll() // retrieve all people form the database
val people = Person.findAll(By_(Person.id, 10)) // retrieve all the
people with id  10

etc.

-harryh

On Nov 26, 1:39 pm, jack jack.wid...@gmail.com wrote:
 wow. thats impressive. But for this, what does the Person class have
 to look like? Suppose I have the table but I don't have the Person
 class written. What does it need to look like?

 On Nov 26, 1:32 pm, harryh har...@gmail.com wrote:

  val people = Person.findAll()

  On Nov 26, 1:22 pm, jack jack.wid...@gmail.com wrote:

   I have my database configured properly in Boot.scala and in my
   pom.xml. Suppose I have a table name person with a field called name.
   What is the simple code to return all rows of this table using Mapper.
   I want to understand the essence of how lift ties tables to objects
   with a simple example.

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[Lift] lift-json question related to Lists of things

2009-11-25 Thread harryh
consider:

case class Foo(id: Int, bars: List[Bar])
case class Bar(id: Int)

val foo = json.extract[Foo]

The following json will cause a problem:

{
  id: 12
}

This can be fixed by changing bars to an Option[List[Bar]].  Should
that really be necessary though?  Can't bars just be an empty list if
there are none of them?

-harryh

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[Lift] Re: Strip ?xml ? header from a subset of pages

2009-11-25 Thread harryh
It is not 100% obvious to me how I would, after this change is
submitted, avoid sending an ?xml? header when serving pages under a
certain path.

Should we be adding something similar to S.skipDocType
(S.skipXmlHeader)?

-harryh

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[Lift] Memcached + Mapper (or Record?)

2009-11-20 Thread harryh
Is anyone successfully running Lift with a simple Memcached based row
cache?  If so, are you doing it with Mapper or Record?  Are there any
docs and/or sample code that would help with this sort of thing?  I'm
happy to read source code, but wondering if there are any other
resources in this general area that might be useful.

-harryh

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[Lift] Re: Memcached + Mapper (or Record?)

2009-11-20 Thread harryh
Then how to go back from the case class (pulled in from memcached) to
a Mapper object (that I can modify and then save)?  I'm worried about
getting the mapper object in an incorrect state where it thinks it
needs to add a new row to the table on save rather than update an
existing one.

Ideally I'd like to override findDbByKey() in my MetaMapper class, and
save() in my Mapper class(1) and leave the rest of my code unchanged.

-harryh

(1) And maybe also bulkDelete_!! and delete, but you get the general
idea.

 Personally, I'd use final case classes, serialize them via lift-json and put
 them in memcached... but that's just me.

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[Lift] Re: Memcached + Mapper (or Record?)

2009-11-20 Thread harryh
 Hmmm... so you want to cache the model object in memcached rather than
 keeping a link to it in the JVM.

Yes, because I'm running on 1 JVMs.

 when you have a modify operation to the model object, you want to update the 
 field
 and hit save and have the right row go back to the RDBMS?

Yes.  Where the object was originally loaded from memcached or the
RDBMS (if it wasn't in the cache). Further, the save should update the
cache as well as the RDBMS.

 (sorry if I'm being dense... just want to create a firm picture in my head of 
 what you
 want to do.)

No problem at all.  And definitely tell me if what I want to do sounds
crazy to you for some reason.  Ultimately what I want to do is
decrease the load on my RDBMS.  How I go about that exactly is all up
for discussion.

-harryh

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[Lift] intro to lift-json?

2009-11-19 Thread harryh
Is there a basic intro to lift-json floating around anywhere?  I'm
having a bit of trouble getting started with a couple basic things.
For example if a have a JObject that corresponds to:

{
  foo : {
bar : 999
  }
}

How do I get the 999 (as an int) out of the JObject?  I'm sure this is
simple, just a bit confused on the basics.

-harryh

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[Lift] Re: intro to lift-json?

2009-11-19 Thread harryh
Why does this parse into a JArray(List(..)) intead of a JArray(..) ?

-harryh

scala parse( { ids : [1, 2] } )
res5: net.liftweb.json.JsonAST.JValue = JObject(List(JField(ids,JArray
(List(JInt(1), JInt(2))


On Nov 19, 3:51 pm, Tim Nelson tnell...@gmail.com wrote:
 Have you seen the readme file?

 http://github.com/dpp/liftweb/tree/master/lift-base/lift-json/

 On Thu, Nov 19, 2009 at 2:20 PM, harryh har...@gmail.com wrote:
  Is there a basic intro to lift-json floating around anywhere?  I'm
  having a bit of trouble getting started with a couple basic things.
  For example if a have a JObject that corresponds to:

  {
   foo : {
     bar : 999
   }
  }

  How do I get the 999 (as an int) out of the JObject?  I'm sure this is
  simple, just a bit confused on the basics.

  -harryh

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[Lift] Re: intro to lift-json?

2009-11-19 Thread harryh
Ah, ok.  That makes sense.  Thx!

On Nov 19, 5:14 pm, Ross Mellgren dri...@gmail.com wrote:
 JArray is a case class that wraps a List. It's not an array-of-list or  
 anything, just that the actual elements are stored in a List that  
 JArray holds.

 -Ross

 On Nov 19, 2009, at 5:12 PM, harryh wrote:

  Why does this parse into a JArray(List(..)) intead of a JArray(..) ?

  -harryh

  scala parse( { ids : [1, 2] } )
  res5: net.liftweb.json.JsonAST.JValue = JObject(List(JField(ids,JArray
  (List(JInt(1), JInt(2))

  On Nov 19, 3:51 pm, Tim Nelson tnell...@gmail.com wrote:
  Have you seen the readme file?

 http://github.com/dpp/liftweb/tree/master/lift-base/lift-json/

  On Thu, Nov 19, 2009 at 2:20 PM, harryh har...@gmail.com wrote:
  Is there a basic intro to lift-json floating around anywhere?  I'm
  having a bit of trouble getting started with a couple basic things.
  For example if a have a JObject that corresponds to:

  {
   foo : {
     bar : 999
   }
  }

  How do I get the 999 (as an int) out of the JObject?  I'm sure  
  this is
  simple, just a bit confused on the basics.

  -harryh

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[Lift] Re: Where are the dragons hiding?

2009-11-18 Thread harryh
See this thread:

http://groups.google.com/group/liftweb/browse_thread/thread/4a174ecf34873967/

In which we discuss how certain queries generated by Mapper perform
very poorly on MySQL.  Certainly this problem could be addressed, but
until it is using Mapper with MySQL will be problematic.

-harryh

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[Lift] Presenting on Lift @ NYC Scala Meetup: Dec 7

2009-11-18 Thread harryh
For anyone who lives in the NYC are and would be interested in this
sort of thing:

http://www.meetup.com/New-York-Scala-Enthusiasts/calendar/11900384/

-harryh

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[Lift] foursquare.com now basically all on Lift

2009-11-17 Thread harryh
I've been a bit coy about it on the list, but three months ago when I
joined the team at foursquare.com I made the final decision that we
would port our webservers to Scala/Lift.  It took about 3 months, but
foursquare.com is now basically running only on Lift(1).  This
includes the website, a mobile website (m.foursquare.com) and a simple
(but growing!) REST api (api.foursquare.com).

I'd like the send a huge thank you to dpp and the rest of the Lift
team. You've built a really great framework here, and I look forward
to using it and seeing it grow for many years to come. An additional
thanks goes out to all those who have answered my many random
questions over the past couple of months.

For those who haven't yet found out about foursquare, you can read
more about it here: http://foursquare.com/learn_more

Anyways, that's about enough self promotion, but I did want to
officially let the community know about what I hope will be a fairly
high profile site that is using Lift.

-harryh

(1) Haven't quite ported feeds.foursquare.com, and there is a legacy
PHP based REST api that will live on for a bit longer as it supports
current versions of our iPhone app.

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[Lift] unusually formed POSTs aren't handled correctly

2009-11-14 Thread harryh

POST /path/to/page?foo=bar HTTP/1.1
Host: harryh.org
Content-Length: 0

req.param(foo) will return Empty instead of Full(bar)

-harryh
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[Lift] Re: unusually formed POSTs aren't handled correctly

2009-11-14 Thread harryh

Hrm.  They are *not* ignored with the following request:

POST /index?foo=bar HTTP/1.1
Host: localhost
Content-Length: 0
Content-Type: application/x-www-form-urlencoded

Will look into the spec.

-harryh

On Nov 14, 4:10 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
 This is defined behaviour in Lift. :-(

 And query params are ignored during POST processing.

 Does the HTTP or Servlet spec define the appropriate behaviour here?  If
 Lift is violating either, we'll change Lift.

 On Sat, Nov 14, 2009 at 12:36 PM, harryh har...@gmail.com wrote:

  POST /path/to/page?foo=bar HTTP/1.1
  Host: harryh.org
  Content-Length: 0

  req.param(foo) will return Empty instead of Full(bar)

  -harryh

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[Lift] Re: How to specify the SELECT statement in the Mapper ?

2009-11-13 Thread harryh

You'll be better off if you don't do it that way.  Compute the day of
week from created_at in your scala code (personally I prefer joda time
for this sort of thing), instead of having the database do it for you.

Use the database to store and retrieve data, not to perform
calculations.

-harryh

On Nov 9, 1:44 am, Neil.Lv anim...@gmail.com wrote:
 Hi all,

   There is some example code:
 ###
 SELECT id,  name, sex, created_at,  DAYOFWEEK(created_at,) as week,
 (CURRENT_DATE) as t
 FROM users
 WHERE created_at  (CURRENT_DATE ) AND created_at  (CURRENT_DATE +
 interval 2 day)
 ORDER BY created_at ASC
 ###

   How can i specify the SELECT statement that i don't want all the
 columns and i want add the column as week
 in the example code ?

   Any help would be much appreciated!

 Cheers,
   Neil
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[Lift] lift-json bug (in Xml.toJson)

2009-11-10 Thread harryh

This is on M7:

scala import
scala.xml.Elem
import scala.xml.Elem

scala import
net.liftweb.json.JsonAST._
import net.liftweb.json.JsonAST._

scala import
net.liftweb.json._
import net.liftweb.json._

scala def go(e: Elem) = Printer.pretty(render(Xml.toJson
(e)))
go: (scala.xml.Elem)String

scala tipsgroup type=Nearbytipid10/id/tip/group/
tips
res0: scala.xml.Elem = tipsgroup type=Nearbytipid10/id/
tip/group/tips

scala go
(res0)
res1: String = { tips:{ group:{ type:Nearby, tip:
{ id:10 } }, type:Nearby } }

Note how Nearby appears twice in res1 but only once in res0

-harryh

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[Lift] Whitespace removal from XML

2009-11-09 Thread harryh

Not scrictly a Lift question, but does anyone have a library they like
(or is there something in scalalib I'm not aware of) that will remove
whitespace from XML?

foo
  barhello world/bar
/foo

to:

foobarhello world/bar/foo

-harryh
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[Lift] Re: Whitespace removal from XML

2009-11-09 Thread harryh

Answering my own question, I wrote this.  I think it should do what I
want:

def compactXml(node: Node): Node = node match {
  case Elem(p, l, a, s, children @ _*) = Elem(p, l, a, s, children.map
(compactXml(_)) :_*)
  case Text(data) = Text(data.trim)
  case x = x
}

-harryh
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[Lift] Re: How quick is webdev with Lift?

2009-11-08 Thread harryh

I use JRebel and SBT (http://code.google.com/p/simple-build-tool/) and
very rarely have to restart my server when doing development.  It's a
very quick dev-cycle.  No big tips really.  I save the code and reload
the page and see the results of my work.

-harryh
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[Lift] Re: Rendering a template bit

2009-11-05 Thread harryh

What you want can be done with very basic usage of snippets (the way
that templates interface with code in Lift).  In your template:

lift:YourSnippet.foo/

Then in YourSnippet.scala:

class YourSnippet {
  def foo(xhtml: NodeSeq) = Site.render()
}

Make sure render returns a NodeSeq.

-harryh

On Nov 5, 9:35 pm, DFectuoso santiago1...@gmail.com wrote:
 I want to do the following pattern, i don't know how(or if its
 possible) to do it in lift:

 - I want any part of my code to call a Site.render() where site is a
 model and render is a function inside that model that will print it
 the information
 - I want the xhtml to be in a html file so that any designer/html guy
 can play with it and its css/html. (also they won't have to compile
 and/or scala:cc after every change).

 Is this possible?

 I was playing with the lift:embed what=/commons/site / and sending
 parameters, but i didn't know how to catch those params in the xml,
 has anyone done this pattern? Am i trying to solve something that can
 be solved other pattern?
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[Lift] path based and hostname based UrlRewriting interacting badly

2009-10-28 Thread harryh

First, I rewrite URLs like /user/harryh to /user?uid=harryh
Also, requests to http://m.harryh.org/foo/bar get rewritten to /
subdomain/mobile/foo/bar

Doing this with the following code:

val urlRewriter: LiftRules.RewritePF = NamedPF(URLRewrite) {
  case RewriteRequest(ParsePath(user :: uid :: Nil, _, true, _), _,
_) = {
RewriteResponse(ParsePath(user :: Nil, , true, false), Map
(uid - uid))
  }

  case RewriteRequest(path, _, req) if
(req.serverName.toLowerCase.startsWith(m.)) = {
RewriteResponse(ParsePath(subdomain :: mobile ::
path.partPath, path.suffix, path.absolute, path.endSlash), emptyMap,
true)
  }
}

LiftRules.rewrite.append(urlRewriter)

The problem is that emtyMap in the second RewriteResponse.  The
uid=harryh parameter that gets created by the first rewrite rule is
being destroyed at which point bad things happen.

Is there a better way to do what I am trying to do here?

-harryh
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[Lift] unnecessary COMMITs?

2009-10-23 Thread harryh

Seeing a great many of these on my postgresql logs:

2009-10-23 21:35:02 UTC WARNING:  there is no transaction in progress
2009-10-23 21:35:02 UTC STATEMENT:  COMMIT

Any idea what might be causing this?  I can filter them out but

a) that would be a little annoying
b) vaguely worried that something non ideal is going on here

-harryh
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[Lift] Re: S.deleteCookie broken in M6

2009-10-22 Thread harryh

 File a ticket.

Done

 It's Harry's tickets day for me today.  The more you file,
 the more that get fixed.

Oh my. That's really quite something there.

-harryh
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[Lift] Re: maintaining logged in user longer outside of SessionVar

2009-10-21 Thread harryh

 See ProtoExtendedSession

After adding this to Boot.scala:

S.addAround(ExtendedSession.requestLoans)

I'm seeing request to load the User object from the database on every
request (including requests for static flies like images/css/js).  Is
there something I can do to make this not happen?  Alternately, should
this be considered a Lift bug?

-harryh
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[Lift] Re: maintaining logged in user longer outside of SessionVar

2009-10-21 Thread harryh

 It's going to load the user for each stateful request.

What do you mean by a stateful request?

 I guess we can change it up to make the load lazy so it'll only happen in the 
 requestvar is
 actually accessed.  Does that sould reasonable?

If that makes it so I don't hit the database when loading static
files, then yes.

-harryh
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[Lift] Re: how to use JqKeypress?

2009-10-20 Thread harryh

Yes, but then how can I distinguish back on the server whether func is
being executed because of a blur (in which case I don't really want to
do anything) or because of a keypress of enter (in which case I want
to perform an action as if the go button had been pressed).

-harryh

On Oct 20, 11:27 am, Derek Chen-Becker dchenbec...@gmail.com wrote:
 I think that the ajaxText already handles an enter key as field
 submission. Here's the code that defines an ajaxText field:

    1.   private def
     ajaxText_*(value: String, jsFunc: Box[Call], func: AFuncHolder,
 attrs: (String, String)*): Elem = {
    2.     val raw = (funcName: String, value:String) = JsRaw('
     +funcName + =' + encodeURIComponent( + value + .value))
    3.     val key = formFuncName
    4.
    5.     fmapFunc(func){
    6.       funcName =
    7.       (attrs.foldLeft(input type=text value={value}/)(_ % _)) %
    8.       (onkeypress - liftUtils.lift_blurIfReturn(event)) %
    9.       (onblur - (jsFunc match {
    10.             case Full(f) = JsCrVar(key, JsRaw(this
    ))  deferCall(raw(funcName, key), f)
    11.             case _ = makeAjaxCall(raw(funcName, this))
    12.           })
    13.       )
    14.     }
    15.   }

 Note the onkeypress and onblur event handlers. If you need to do some
 extra handling on the client side, you can provide the jsFunc parameter
 which will be used to submit the ajax call.

 Derek

 On Mon, Oct 19, 2009 at 6:13 PM, harryh har...@gmail.com wrote:

  It seems like I ought to be able to use JqKeypress so that if a user
  presses enter when a text input has focus an associated ajaxButton is
  submitted.  I can't get it to work though.  Help?

  Basically I have a bunch of little form like so

  [      text input       ] [go!]

  that I want to submit (ajax style) when the user presses enter.

  -harryh
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[Lift] Re: Menu entry to perform action then redirect

2009-10-20 Thread harryh

Menu(Loc(logout, List(logout), logout, Template(() =
{ User.logout }), ifLoggedIn)) ::

object User {
  def logout = {
logUserOut
S.redirectTo(/)
  }
}

On Oct 20, 5:50 pm, Naftoli Gugenheim naftoli...@gmail.com wrote:
 Could someone give an example of a Sitemap menu entry that performs an
 action and then redirects?Thanks.
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[Lift] maintaining logged in user longer outside of SessionVar

2009-10-19 Thread harryh

I want users to stay logged into my site for extended periods of time
(through server restarts, and browser restarts).  By default Lift
stores a User in a SessionVar so this doesn't get me there.  I've
configured jetty so the session cookie doesn't time out for 30 days,
and I have a database table with a session id - user id mapping, but
keeping this up to date has proven to be kind of a pain as the session
id can change from time to time (like when I restart my servers to
push a new website version) and it's a bit more tricky than I would
like to handle all of this correctly.

Are any other lift users trying to accomplish the same goal?  How have
you gone about it?  Would it be a good feature for the framework to
have something to do this a bit more built in?

-harryh
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[Lift] Re: maintaining logged in user longer outside of SessionVar

2009-10-19 Thread harryh

 See ProtoExtendedSession

Ah, this is perfect!  Just hadn't noticed it before.  Thx.

-harryh

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[Lift] Re: maintaining logged in user longer outside of SessionVar

2009-10-19 Thread harryh

 Is it more dangerous to store the user's uniqueId in a cookie than to store 
 another uniqueId that's associated with the
 user's uniqueId?

It is if your site has URLs like http://harryh.org/user/[uid]

-harryh
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[Lift] how to use JqKeypress?

2009-10-19 Thread harryh

It seems like I ought to be able to use JqKeypress so that if a user
presses enter when a text input has focus an associated ajaxButton is
submitted.  I can't get it to work though.  Help?

Basically I have a bunch of little form like so

[  text input   ] [go!]

that I want to submit (ajax style) when the user presses enter.

-harryh

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[Lift] Re: maintaining logged in user longer outside of SessionVar

2009-10-19 Thread harryh

 See ProtoExtendedSession

It might be kind of annoying to change at this point, but experation
is a misspelling in this trait.

-harryh

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[Lift] Re: Newbee question Datamapper

2009-10-16 Thread harryh

Make MyMappedTimeSpan a trait:

trait MyMappedTimeSpan[T :Mapper[T]](val owner: T) {
  object from extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
  object to extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
}

And then use it like so:

class DBObject extends LongKeyedMapper[Bericht] with IdPK with
MyMappedTimeSpan[DBObject] {
}

-harryh

On Oct 16, 8:08 am, hyperion hyperion1...@googlemail.com wrote:
 Hello,

 I tried this:

 class MyMappedTimeSpan[T :Mapper[T]](val owner: T){
     import net.liftweb.util._
     import net.liftweb.http.S
     import xml.NodeSeq

     val from = new MappedTime(owner)
     val to = new MappedTime(owner)
  }

 class DBObject extends LongKeyedMapper[Bericht] with IdPK {

   def getSingleton = Bericht
   ...
   object test extends MyMappedTimeSpan(this)

 }

 and bound this class with:
 from - bt.test.from.toForm,
 to - bt.test.to.toForm,

 In html:
                 tr
                         tdbt:von//td
                         tdbt:nach//td
                 /tr

 Everything worked fine... except that my timespan is completely
 ignored in the database ;). I think the reason is you use reflection
 on class DBObject to find all values that should be stored in the
 dabase?... but I have not inspected the source code jet... I am new to
 lift and also to scala

 My Question: Is it possible to build such Datatypes based on two or
 more  DB-Fields of the single table...?... I think even they are
 mapped to the master-DB-table, such types could be helpful...

 Greetz
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[Lift] binding bug inside of select elements

2009-10-15 Thread harryh

This seems very strange to me, and I don't have a minimal test case
yet, but I'm seeing a problem where elements are not being properly
bound when they appear inside of a select in my view. So, for
example:

select
  stats:options
/select

stats:options isn't being bound.

But

div
  stats:options
/div

gets bound find (but then I, obviously, don't have proper HTML since
the options are inside of a div instead of a select).

Has anyone else seen this?  Is it possible that this is what is really
going on here?  It seems like a very strange bug (if I have, in fact,
hit a bug).

-harryh
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[Lift] Re: binding bug inside of select elements

2009-10-15 Thread harryh

Not seeing how to mark it high priority, but here is the ticket:

http://github.com/dpp/liftweb/issues/#issue/102

will attach additional information as I figure it out.

-harryh

On Oct 15, 12:37 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
 Weird. When you have a repro case, please file a ticket and mark it as high
 priority.



 On Thu, Oct 15, 2009 at 9:28 AM, harryh har...@gmail.com wrote:

  This seems very strange to me, and I don't have a minimal test case
  yet, but I'm seeing a problem where elements are not being properly
  bound when they appear inside of a select in my view. So, for
  example:

  select
   stats:options
  /select

  stats:options isn't being bound.

  But

  div
   stats:options
  /div

  gets bound find (but then I, obviously, don't have proper HTML since
  the options are inside of a div instead of a select).

  Has anyone else seen this?  Is it possible that this is what is really
  going on here?  It seems like a very strange bug (if I have, in fact,
  hit a bug).

  -harryh

 --
 Lift, the simply functional web frameworkhttp://liftweb.net
 Beginning Scalahttp://www.apress.com/book/view/1430219890
 Follow me:http://twitter.com/dpp
 Surf the harmonics
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[Lift] Re: Followup: Persisting a mapper with join tables in 1.0.2

2009-10-14 Thread harryh

 There is no online API docs for 1.1-M6

http://scala-tools.org/mvnsites/liftweb-1.1-M6/lift-webkit/scaladocs/index.html

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[Lift] Re: collecting page load statistics for ajax requests

2009-10-14 Thread harryh

 So, your callOnAjaxCompleteFunc will be called if any of the ajax functions
 in the block are executed.

That's certainly one way to go.  I was thinking it might be nice to
modify the URL used for the ajax request though because then the
request can be logged in a standard way (whatever it is that jetty/
tomcat/whatever server you are using is already doing) and parsed with
standard tools.

callOnAjaxCompleteFunc could certainly create a log entry designed to
look like the above, but it might be a bit more work for the
developer.

-harryh

PS: Just so you know this isn't high priority or anything.  Just a
random might be nice idea I had.
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[Lift] Re: DB logging logs statements twice?

2009-10-13 Thread harryh

I'm also seeing this double logging behavior (using PostgreSQL.  I was
under the impression that it was happening because the SQL statement
is first prepared, and then executed (each of which cause a log
entry).  It's not critical or anything, but it would be nice if this
could be fixed at some point.

-harryh

On Oct 13, 10:28 am, Derek Chen-Becker dchenbec...@gmail.com wrote:
 I'm not sure how that could be getting logged twice, especially since it's
 the exact same ResultSet being returned. When I tested this on my local app
 (against both PG and MySQL) I didn't get this behavior, but I'll try pulling
 from master and testing again just in case something changed.

 Derek

 On Tue, Oct 13, 2009 at 6:56 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote:



  Hi,

  Just wanted to update to the new db logging by adding the following to
  boot:

   DB.addLogFunc {
       case (query:DBLog, time) = {
         LogBoot.loggerByName(query).info( All queries took  + time +
  ms: )
         query.statementEntries.foreach({ case DBLogEntry(stmt, duration) =
  LogBoot.loggerByName(query).info(    +stmt +  took  + duration +
  ms)})
         LogBoot.loggerByName(query).info( End queries)
       }
     }

  But it seems all executed statements are logged twice. I have this
  snippet:

  def currentUser(xhtml: Group): NodeSeq =
  Text(User.currentUser.dmap(S.?(Anonym))(user = user.firstName +   +
  user.lastName))

  This logs:

  14:46:09.068 [tp-1029120287-4] INFO  query                                -
   All queries took 5ms:
  14:46:09.068 [tp-1029120287-4] INFO  query                                -
      Exec query SELECT users.id, users.firstname, users.lastname,
  users.email, users.locale, users.timezone, users.password_pw,
  users.password_slt, users.account_id, users.superuser, users.uniqueid,
  users.validated FROM users WHERE id = 2 (scale -5) :
  org.postgresql.jdbc4.jdbc4result...@77f31432 took 4ms
  14:46:09.069 [tp-1029120287-4] INFO  query                                -
   End queries
  14:46:09.069 [tp-1029120287-4] INFO  query                                -
   All queries took 8ms:
  14:46:09.069 [tp-1029120287-4] INFO  query                                -
      Exec query SELECT users.id, users.firstname, users.lastname,
  users.email, users.locale, users.timezone, users.password_pw,
  users.password_slt, users.account_id, users.superuser, users.uniqueid,
  users.validated FROM users WHERE id = 2 (scale -5) :
  org.postgresql.jdbc4.jdbc4result...@77f31432 took 4ms
  14:46:09.069 [tp-1029120287-4] INFO  query
  -  End queries

  Note the same resultset. The postgres logs also shows that only a single
  statement is executed

  So, what did I miss?

  /Jeppe
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[Lift] LongKeyedMapper object where I can set the id

2009-10-08 Thread harryh

LongKeyedMapper object where I can set the id.

I want a database object where I set the primary key myself (rather
than having it be sequentially by the database).  I thought I could do
this:

class Tombstone extends LongKeyedMapper[Tombstone] {
  def getSingleton = Tombstone

  def primaryKeyField = id
  object id extends MappedLongIndex(this) {
override def writePermission_? = true
  }
}

object Tombstone extends Tombstone with LongKeyedMetaMapper[Tombstone]
{
  override def dbTableName = tombstones
}

But when I do Tombstone.create.id(12).save it does an UPDATE instead
of an INSERT.  Is there any good way to do what I want here?
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[Lift] Re: Milestone 6 Released!

2009-10-08 Thread harryh

Huzzah!

On Oct 8, 8:13 pm, Charles F. Munat c...@munat.com wrote:
 The Lift team is pleased to announce the lift-1.1-M6 release!

 Lift is an expressive and elegant framework for writing web
 applications. Lift stresses the importance of security, maintainability,
 scalability and performance while allowing for high levels of developer
 productivity. Lift is a scala web framework.

 No changes defined in this version.

 Have fun!
 -Lift team
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[Lift] MappedLong null values

2009-10-07 Thread harryh

I have a long field in my database that I want to have a unique index
(enforced by the database).  Sometimes this field will be empty, in
which case I'd like to set it to NULL.  0 won't work because that
won't work with the unique index.

MappedLong appears to be converting null to 0 internally.
Additionally overriding defaultValue for the field and returning null
does not appear to work.

Is this by design? Is it possible that I am misunderstanding something
here?

-harryh

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[Lift] Re: How can I pass the result of Xml.toJson to JsonResponse

2009-10-06 Thread harryh

For now I am doing this.  It's not so bad.

def xmlToJson(xml: Elem): JsExp = {
  val json = Xml.toJson(xml) map {
// some mappings specific to my json needs
  }
  JsRaw(Printer.compact(render(json))
}

JsonResponse(xmlToJson(xml))

On Oct 6, 11:17 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
 Please open a ticket for this.  We need to get the rest of Lift playing well
 with Joni's excellent JSON library.

 On Tue, Oct 6, 2009 at 7:43 AM, glenn gl...@exmbly.com wrote:

  I want to pass the result of Xml.toJson to JsonResponse. How can I do
  that, when JsonResponse takes a JsExp as
  a parameter, not a JValue.

  Glenn

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[Lift] Re: lift-json and attributes

2009-10-06 Thread harryh

 This is a feature request and I just committed an implementation to my
 branch.

This looks great.  If there is anyway it could get committed to master
in time for M6 (which is coming out any day now right?) that would be
very very helpful to me.

Thanks for your work on this stuff Joni!

-harryh
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[Lift] Possible lift-json bug in Xml.toJson

2009-10-05 Thread harryh

Xml.toJson (in M5) is converting this:

iconhttp://harryh.org/img/icons/foo.png/icon

to this:

JField(icon, JObject(Nil))

Is there some special handling of URLs going on here that might be
causing me problems?

-harryh

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[Lift] Re: Possible lift-json bug in Xml.toJson

2009-10-05 Thread harryh

More info.  If the code that generates the XML looks like this:

icon{http://harryh.org+theUri}/icon

everything is fine, but it breaks when like this:

iconhttp://harryh.org{theUrl}/icon

-harryh

On Oct 5, 2:22 pm, harryh har...@gmail.com wrote:
 Xml.toJson (in M5) is converting this:

 iconhttp://harryh.org/img/icons/foo.png/icon

 to this:

 JField(icon, JObject(Nil))

 Is there some special handling of URLs going on here that might be
 causing me problems?

 -harryh
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[Lift] Re: a question about host based url rewriting

2009-10-02 Thread harryh

 You want the foo_mobile.html template rather than the foo.html template (or
 foo_en.html or foo_es.html).

 So, the rest of the logic stays the same (page access, etc.) but the
 template selection is different.  Is this correct?

No, not really.  There isn't a 1:1 mapping of pages between the
standard site and the mobile site.  I can see how some people might
want that, but it's not my particular use case.

I just have a whole separate set of templates I want to serve off of
m.harryh.org.

-harryh
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[Lift] Re: a question about host based url rewriting

2009-10-02 Thread harryh

 Are they essentially two independent apps in terms of templates and
 snippets?

Yes.  Though they share the same model (+ some random extra library
code).

 That seems like you just want a virtual host via nginx or some
 other web server.

I could go that route.  But then I have another app to build + deploy.

-harryh
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[Lift] a question about host based url rewriting

2009-10-01 Thread harryh

I want http://m.harryh.org to visit a mobile version of my site so I
added the following rewrite rule:

case RewriteRequest(path, _, req) if
(req.serverName.toLowerCase.startsWith(m.)) = {
  RewriteResponse(ParsePath(mobile :: path.partPath,
path.suffix, path.absolute, path.endSlash), emptyMap, true)
}

This also makes the mobile site appear at http://harryh.org/mobile/
which I don't really want.  Is there any way I can accomplish this
goal (other than putting the mobile site in a weird path like /
someRandomGuid/

-harryh

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[Lift] Change net.liftweb.mapper.ByList to take a Seq[T] instead of a List[T]?

2009-09-30 Thread harryh

Subject says it all.  Is there any reason why this should not be done?

-harryh

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[Lift] Re: Change net.liftweb.mapper.ByList to take a Seq[T] instead of a List[T]?

2009-09-30 Thread harryh

 We're going to have to turn it into a List under the covers anyway, so it's
 a performance wash.

Taking a look at the code it does no appear to be the case that it
will have to be turned into a List under the covers.  It's just mapped
over and then mkStringed.

-harryh

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[Lift] selecting random rows from a table

2009-09-29 Thread harryh

Let's say I want 10 random users from a table In SQL I would do this:

SELECT * FROM users ORDER BY random() LIMIT 10;

Is there any way (without resorting to a fully raw SQL query) to do
this with lift-mapper?  I though this would work:

Users.findAll(OrderBySql(random(), IHaveValidatedThisSQL(harryh,
2009-9-29)),
  MaxRows(10))

This does not work, however, because when using SELECT DISTINCT you
can't ORDER BY something that you aren't selecting (in PostgreSQL at
least, might be ok in MySQL).

-harryh
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[Lift] Re: Struggling with mapping a list of objects

2009-09-24 Thread harryh

 But I cannot for the life of me work out of to store a list of objects

What do you expect the underlying type in the database table to be?
Normally this would be done with a separate table with a foreign key
(MappedLongForeignKey) back to the users table.

-harryh
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[Lift] Re: XML - JSON converter?

2009-09-24 Thread harryh

This is really really great.  Will totally help me out a lot.  Thanks!

-harryh

On Sep 24, 3:24 am, Joni Freeman freeman.j...@gmail.com wrote:
 Hi,

 There is now improved XML support in lift master. See a short section
 in README:http://github.com/dpp/liftweb/tree/master/lift-json/

 and some executable 
 examples:http://github.com/dpp/liftweb/blob/master/lift-json/src/test/scala/ne...

 Cheers Joni

 On Sep 2, 9:27 pm, harryh har...@gmail.com wrote:

  Is there anything built into lift that will doXML- JSON
  conversion?  For example:

  foos
    foo
      id1/id
      nameHarry/name
    /foo
    foo
      id2/id
      nameDavid/name
    /foo
  /foos

  to:

  {
    foos: {
      foo: [{
          id: 1,
          name: Harry
       },
       {
          id: 2,
          name: David
       }
      ]

  }

  Just checking to see if there was something Lift friendly to do this
  before writing my own (or picking a java library to use).

  -harryh
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[Lift] Re: suggestion: strip comments when serving templates

2009-09-23 Thread harryh

 - Would also be nice if all excessive white space were stripped from
   the output (not sure how much this matters if it's gzip'ed)

This would be nice as well, but can be a lot more complicated.  GXP (a
templating language I worked on at Google) had pretty awesome
whitespace control that I'm happy to describe in detail if dpp (or
another committer) is interested.  Personally though, I wouldn't
consider this super high priority.

-harryh

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[Lift] Re: access to raw HttpServletRequest/Response

2009-09-23 Thread harryh

 You can do it today like this:

 S.containerRequest.map(r = (r.asInstanceOf[HTTPRequestServlet]).req)

eh?  I'm getting this error:

[error] value req is not a member of
net.liftweb.http.provider.servlet.HTTPRequestServlet
[error] val request: HttpServletRequest = S.containerRequest.map(r =
(r.asInstanceOf[HTTPRequestServlet]).req).open_!

-harryh

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[Lift] low level lift exception when building with sbt

2009-09-22 Thread harryh

Experimenting with SBT, and everything works fine when running jetty
from within sbt, but when I package up a war file and try to run in
production, I'm getting the following exception.  Any ideas?

-harryh

java.lang.NullPointerException
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$3.apply
(HTTPProvider.scala:54)
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$3.apply
(HTTPProvider.scala:54)
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
at net.liftweb.http.URLRewriter$.doWith(Req.scala:470)
at net.liftweb.http.provider.HTTPProvider$class.service
(HTTPProvider.scala:53)
at net.liftweb.http.LiftFilter.service(LiftServlet.scala:507)
at net.liftweb.http.provider.servlet.ServletFilterProvider
$class.protected$service(ServletFilterProvider.scala:41)
at net.liftweb.http.LiftFilter.protected$service(LiftServlet.scala:
507)

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[Lift] suggestion: strip comments when serving templates

2009-09-22 Thread harryh

I would love to add comments to my templates:

!-- Put the shiny new feature here as soon as we have time to build
it --

that got stripped out before being served to end users.

-harryh

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[Lift] Re: How to bind preserving element contents?

2009-09-18 Thread harryh

Personally, when doing this, I like splitting out the code to fill in
the rows into a separate function like so:

def row(xhtml: NodeSeq): NodeSeq = {
  questions.flatMap(question = {
bind(question, xhtml, edit - ..., delete - ...)
  })
}

bind(questions, xhtml, row - row _)

On Sep 18, 3:05 am, Heiko Seeberger heiko.seeber...@googlemail.com
wrote:
 Hi,
 I would like to bind the following part form a template:

 question:row
   tdquestion:edit/nbsp;question:delete//td
   tdquestion:id//td
   tdquestion:text//td
   tdquestion:answers//td
 /question:row

 The result should be a table row like that:

 tr id=someId
   td.../td
   ...
 /tr

 So in this case I want to replace the row-element itself (and add an
 attribute value), but the contents (children) of the row-element must be
 preserved! How can this be accomplished?

 Thank you!

 Heiko

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[Lift] Re: What's the best way to get the current request URL

2009-09-16 Thread harryh

S.uri

On Sep 16, 9:35 am, Ryan Donahue donahu...@gmail.com wrote:
 I want to capture the the current request URL, so I can redirect back
 to it at a later point.  What's the best way to get at the URL?  The
 answer is probably obvious, but I can't seem to find it.

 Thanks,

 Ryan
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[Lift] Re: Bug in MappedEmail: emailPattern is wrong

2009-09-16 Thread harryh

Hrm, MappedEmail is now rejecting e-mails with a - in the part before
the @.

is %-+ being interpreted as % through + and not % OR - OR + ?

-harryh, who is easily confused by regular expressions

On Aug 26, 7:32 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
 Thanks.

 Changed and pushed to GitHub.  Allow 2 hours for Maven availability.

 On Wed, Aug 26, 2009 at 4:15 PM, harryh har...@gmail.com wrote:

   What's the change to the RegEx?

  val emailPattern = Pattern.compile(^[a-z0-9._%-+]+@(?:[a-z0-9-]+\\.)+
  [a-z]{2,4}$)

  note the addition of the + to the allowed characters before the @

  -harryh

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 Git some:http://github.com/dpp
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[Lift] suggestion: make Mailer use n.l.util.Props

2009-09-16 Thread harryh

Rather than using System.getProperties should Mailer use
net.liftweb.util.Props?  It seems a little inconsistent as is.

-harryh

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[Lift] Problems with ByList on M5

2009-09-15 Thread harryh

val venues = Venue.findAll(ByList(Venue.id, List(1, 2, 3)))

results in the following compile error:

 found   : com.foursquare.model.Venue.id.type (with underlying type
object com.foursquare.model.Venue.id)
 required: net.liftweb.mapper.MappedField
[AnyVal,com.foursquare.model.Venue.MapperType]
Note that implicit conversions are not applicable because they are
ambiguous:
 both method mapToType in object MappedField of type [T,A :
net.liftweb.mapper.Mapper[A]](net.liftweb.mapper.MappedField[T,A])T
 and method mapToType in object MappedField of type [T,A :
net.liftweb.mapper.Mapper[A]](net.liftweb.mapper.MappedField[T,A])T
 are possible conversion functions from
com.foursquare.model.Venue.id.type to net.liftweb.mapper.MappedField
[AnyVal,com.foursquare.model.Venue.MapperType]
  val venues = Venue.findAll(ByList(Venue.id, List(1, 2, 3)))

-harryh
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[Lift] Re: Problems with ByList on M5

2009-09-15 Thread harryh

Though strangely enough, this compiles fine:

val ids: List[Long] = List(1,2,3)
val venues = Venue.findAll(ByList(Venue.id, ids)

Weird!

-harryh

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[Lift] small bug in SHtml.ajaxText

2009-09-15 Thread harryh

Neither of the ajaxText methods take attrs: (String, String)*

The private ajaxText_* does, but the public methods don't.

-harryh

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[Lift] Re: small bug in SHtml.ajaxText

2009-09-15 Thread harryh

 http://reviewboard.liftweb.net/r/5/

Thanks!

-harryh

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[Lift] Re: Bug in HasManyThough causing unexpected deletions?

2009-09-14 Thread harryh

I'm still seeing this on M5.  My diagnosis of the prolem in my 2nd e-
mail is incorrect, but there is definitely a problem here.

-harryh

On Aug 28, 1:39 pm, harryh har...@gmail.com wrote:
 Tips are on TipLists based on TipListBinds.
 Tips are also hooked to a Venue:

 class Tip extends LongKeyedMapper[Tip] with IdPK {
   // other unrelated stuff stuff
   object venueid extends MappedLongForeignKey(this, Venue)
   object lists extendsHasManyThrough(this, TipList, TipListBind,
 TipListBind.tipid, TipListBind.listid)

 }

 In an ajax request I am setting the venueid on a collection of Tips to
 Empty.  This is, for somewhat confusing reasons, causing the Tip to be
 removed from the lists it is on (the TipListBindings are being
 deleted).  I am fairly certain this is happening because ofHasManyThrough.

 INFO - com.mysql.jdbc.preparedstatem...@2b48c3: UPDATE tips SET
 venueid = ** NOT SPECIFIED ** WHERE id = ** NOT SPECIFIED **:2ms
 INFO - com.mysql.jdbc.preparedstatem...@69827c: SELECT  DISTINCT
 tipxlist.listid, tipxlist.id, tipxlist.tipid FROM tipxlist   WHERE
 tipid = 21128 :1ms
 INFO - com.mysql.jdbc.preparedstatem...@69827c: SELECT  DISTINCT
 tipxlist.listid, tipxlist.id, tipxlist.tipid FROM tipxlist   WHERE
 tipid = ** NOT SPECIFIED ** :22ms
 INFO - com.mysql.jdbc.preparedstatem...@ca8d17: DELETE FROM tipxlist
 WHERE id = ** NOT SPECIFIED **:1ms

 Currently thinking through what's going on inHasManyThrough::afterUpdate

 -harryh
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[Lift] setting cookies in an ajax response

2009-09-12 Thread harryh

I have an SHtml.ajaxSelect that, when executed sets a cookie:

S.addCookie(HTTPCookie(CITYID, city.id.toString))

and then returns a JsCmds.RedirectTo(uri) command.  The cookie isn't
actually being set (if I look at the live http headers the Set-Cookie
line isn't sent down in the http response to the ajax call.

It's not clear to me if this is correct behavior on lift's part, of if
this is a bug.

If it is correct behavior, is there a better way to do this sort of
thing?

-harryh
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[Lift] Re: Milestone 5 now available!

2009-09-10 Thread harryh

Are there generated scaladocs on the web for M5 anywhere?

-harryh

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[Lift] PreCache doesn't take into account OrderBy and MaxRows?

2009-09-10 Thread harryh

Consider:

val venues = Venue.findAll(By(Venue.cityid, City.currentCity),
   NotNullRef(Venue.owner),
   OrderBy(Venue.id, Descending),
   MaxRows(10),
   PreCache(Venue.owner))

This appears to be generating a query like so:

SELECT  DISTINCT users.id, users.firstname, users.lastname FROM users
WHERE id IN (SELECT owner FROM venues  WHERE cityid = 22  AND owner IS
NOT NULL  )  - 970ms

This will end up returning a much larger number of users than is
required which seems bad.

-harryh
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[Lift] Re: PreCache doesn't take into account OrderBy and MaxRows?

2009-09-10 Thread harryh

~1125 ms for your query.
~50ms for the IN based on that lift currently generates.

This is doing things in the psql console on the same machine the
database lives on.  It's not so much the query time that concerns me,
as the amount of data being sent back in the results.  In my example
at the top of the thread I only need 10 users, but the query is
spitting back thousands.

-harryh

On Sep 10, 2:16 pm, Viktor Klang viktor.kl...@gmail.com wrote:
 On Thu, Sep 10, 2009 at 8:15 PM, Viktor Klang viktor.kl...@gmail.comwrote:





  On Thu, Sep 10, 2009 at 6:23 PM, harryh har...@gmail.com wrote:

  Consider:

  val venues = Venue.findAll(By(Venue.cityid, City.currentCity),
                                NotNullRef(Venue.owner),
                                OrderBy(Venue.id, Descending),
                                MaxRows(10),
                                PreCache(Venue.owner))

  This appears to be generating a query like so:

  SELECT  DISTINCT users.id, users.firstname, users.lastname FROM users
  WHERE id IN (SELECT owner FROM venues  WHERE cityid = 22  AND owner IS
  NOT NULL  )  - 970ms

  Just out of curosity,

  if you run the following query, how long does it take?

 Ack! a very nice distinct fell away,

 this is the real deal:

 select distinct u.id http://u.id/, u.firstname, u.lastname
 from venues v
         inner join users u on v.owner = u.id
 where v.cityid = 22



  select u.id, u.firstname, u.lastname
  from venues v
          inner join users u on v.owner = u.id
  where v.cityid = 22

  This will end up returning a much larger number of users than is
  required which seems bad.

  -harryh

  --
  Viktor Klang

  Blog: klangism.blogspot.com
  Twttr: viktorklang

  Lift Committer - liftweb.com
  AKKA Committer - akkasource.org
  Cassidy - github.com/viktorklang/Cassidy.git
  SoftPub founder:http://groups.google.com/group/softpub

 --
 Viktor Klang

 Blog: klangism.blogspot.com
 Twttr: viktorklang

 Lift Committer - liftweb.com
 AKKA Committer - akkasource.org
 Cassidy - github.com/viktorklang/Cassidy.git
 SoftPub founder:http://groups.google.com/group/softpub
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[Lift] Re: PreCache doesn't take into account OrderBy and MaxRows?

2009-09-10 Thread harryh

 A fix is in the works.

Awesome.  Thanks!!!

-harryh
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