Re: [Rails-core] AR unit tests

2005-11-23 Thread Jeremy Kemper

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On Nov 23, 2005, at 12:31 PM, Michael Schoen wrote:
The test adding in [3089] passes under Oracle, but spits out some  
ugly stuff. Is this expected?


Yes; it's expected.  I will silence the warnings.

It's to ensure than we don't generate reader methods for columns  
whose names are not valid Ruby method names.


jeremy
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Re: [Rails-core] Changeset 3169 causing errors in my model

2005-11-24 Thread Jeremy Kemper

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The mutual dependencies error introduced in [3169] is fixed in [3181].

jeremy
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Re: [Rails-core] Changeset 3169 causing errors in my model

2005-11-24 Thread Jeremy Kemper

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On Nov 24, 2005, at 12:00 PM, Francois Beausoleil wrote:

2005/11/24, Michael Koziarski <[EMAIL PROTECTED]>:

SystemStackError isn't the user experience we're after though...

Was there anything in your logs warning you that you'd overridden  
transaction?


Nope, and I have had the same kind of error with other base class
methods:  quote, transaction.


Bummer.  The whole point of this warnings stuff is so that you get a
message in your logs telling you that you're overriding an existing
method.  If you're on FastCGI, the message will appear in your
web server's error log, not in development.log.  This is known; we
need to redirect STDERR to the current environment's logfile.

Or even
  STDERR.reopen(File.open(configuration.log_path))
  configuration.logger = Logger.new(STDERR)

jeremy
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Re: [Rails-core] question on enable_warnings

2005-11-24 Thread Jeremy Kemper

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On Nov 24, 2005, at 12:06 AM, Michael Schoen wrote:
In [3169], a change was made to enable warnings on the first load  
of a file in dev mode. Seems to result in a LOT of warnings from  
within Rails, particularly ActiveRecord (see below for a sample).


If the "on first load only" part not working? Is there a way to  
make AR warnings-safe?


The "on first load only" works.  Getting AR warnings-safe will take  
more work.  Check out the other [3169] thread :/


I think since this bothers enough people running on trunk, I will  
disable it (if false, ha!) until I have enough of the warnings  
cleaned up.


jeremy
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Re: [Rails-core] Changeset 3169 causing errors in my model

2005-11-24 Thread Jeremy Kemper

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On Nov 24, 2005, at 12:35 PM, Francois Beausoleil wrote:

2005/11/24, Jeremy Kemper <[EMAIL PROTECTED]>:

Bummer.  The whole point of this warnings stuff is so that you get a
message in your logs telling you that you're overriding an existing
method.  If you're on FastCGI, the message will appear in your
web server's error log, not in development.log.  This is known; we
need to redirect STDERR to the current environment's logfile.

Or even
   STDERR.reopen(File.open(configuration.log_path))
   configuration.logger = Logger.new(STDERR)


I do not address this case in my patch, but you may check out what  
it does:

http://dev.rubyonrails.org/ticket/3005

I took the liberty to up the priority and the severity.  This is a
serious issue that I faced myself multiple times.


Thank you; the patch looks good.  I'll be away for a bit (holiday) but
another committer will likely merge it to trunk and the stable branch.

Extra thanks for unit testing your patch.

jeremy
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Re: [Rails-core] connection specifications borked in changeset 3218?

2005-12-05 Thread Jeremy Kemper

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On Dec 5, 2005, at 12:55 PM, Trevor Squires wrote:
it looks like a recent change (3218) has borked connection  
specifications in some way.


When I run my unit tests it fails because even though it's  
connection to the test database it's using the username (and I  
presume, password) of the *development* user.


This does not occur in 3217 and, of course, it isn't a problem if  
you happen to use the same login and password for all three  
databases...


By the way, does this sort of 'oops' thing deserve a TRAC entry as  
a first point of contact or is it ok to send these to this list?


Please raise issues loudly and in every available forum :)

I fixed the problem in [3222].

Thanks,
jeremy
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Re: [Rails-core] #3024 - Reloading aggregation instances

2005-12-07 Thread Jeremy Kemper

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On Dec 5, 2005, at 4:14 PM, Francois Beausoleil wrote:

Another patch that I feel needs more attention:
http://dev.rubyonrails.org/ticket/3024

This patch ensures aggregations are reloaded when the parent record
is.  This bit me during unit testing.  I was going bonkers thinking
there was something wrong with my code.

Anyway, this patch applies the same strategy as associations  
reloading.


Worth taking a look and applying ?  It includes unit tests too.  I
believe this is fit for trunk and stable.


Applied.  Look for it in 1.0rc5.  Thanks for the patch (and tests!)

Best,
jeremy

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Re: [Rails-core] automatic db retries

2005-12-09 Thread Jeremy Kemper

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On Dec 9, 2005, at 10:50 AM, Rick Bradley wrote:
Not only that, but with 0.14.4 we've turned up a problem on Oracle  
with
transaction isolation in tests.  Basically, if we have a test that  
calls

some AR functionality which happens to use a transaction internally,
using use_transactional_fixtures, with 0.14.3 the changes in that test
would be isolated, with 0.14.4 (on Oracle, but not on Postgres) the
changes in that test are visible outside the test.  We've gotten it  
down

to a fairly small test pair and it's definitely a result of changes in
oci_adapter.rb (which are almost entirely related to the new  
recoverable
connections).  When I have something clear enough to share I'll  
pass it

along.


http://dev.rubyonrails.org/ticket/3133

jeremy
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Re: [Rails-core] automatic db retries

2005-12-09 Thread Jeremy Kemper

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On Dec 9, 2005, at 8:18 AM, Wilson Bilkovich wrote:

Sorry to resurrect an old thread, but what about just defining a
"no-op" query for each adapter.  In Oracle, that would be, say,
"select * from dual".
Many Java connection pool implementations have such a thing, and
execute it when a connection is assigned.  If it fails, the connection
is closed and reopened.  If it works, it's safe to run your actual
code.

Retries are scary.


This is how the feature's implemented: see the active? instance  
methods implemented by the various connection adapters.  Currently,  
active? is called per-request.  It'd be nice to cut that down, but  
it'd be at the expense of failed requests.


jeremy
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Re: [Rails-core] config.frameworks

2005-12-13 Thread Jeremy Kemper

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On Dec 12, 2005, at 11:21 PM, Kent Sibilev wrote:

Can I ask you guys what is the point of having config.frameworks in
environment.rb? According to the comment before this config  
parameter, it is
there so you can specify which frameworks you don't want to use. On  
the other
hand, if you use gem version of rails, and I believe most people  
do, whenever
you require 'initializer', all rails frameworks are being loaded as  
a part of
gem dependencies mechanism. So basically this config parameter is  
useless and

confusing.


Put your vendor/rails directory to work with rake freeze_gems or  
freeze_edge.


jeremy
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Re: [Rails-core] rails breaking with ruby rc 1.8.4

2005-12-13 Thread Jeremy Kemper

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On Dec 13, 2005, at 9:39 AM, Ara.T.Howard wrote:
this kind of thing exists in other places in the code as well.   
here are

summaries of the two stack traces when this code is loaded:

[...]

yikes.  basically what is happening is that Callbacks gets mixed into
ActiveRecord::Base __twice__ - setting up a recursive defintion of
#instantiate (the second time).


Thanks for the detective work, Ara.  It's interesting that defined? 
(Foo::Bar) results in a const_missing call for Foo but defined?(Foo)  
does not.



now, why this seems to be platform dependant i do not understand  
yet - but the
combination of autoloading hooks, require overrides, and non- 
protected (unless

defined?...) class defs and method aliases seem fragile.


Yes!  I am so eager for Ruby 2 to obviate their need.


i'm trying to fix - but it seems a wholesale revamp of the loading  
methods and
definition strategy is in order.  on the otherhand an __early__  
subversion of
require to occur exactly once no matter what might short circuirt  
the whole

thing...


I'd like a Module#wrap_method in Active Support to DRY up the  
repetitive, error-prone aliasing and give us a single place to more  
thoroughly check for double-wrapping.


A robust require_once would be a good adjunct.  Perhaps we could  
directly backport what's been done in 1.9 to ensure future  
compatibility.


Best,
jeremy
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Re: [Rails-core] bug in has_many count?

2006-01-19 Thread Jeremy Kemper

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On Jan 19, 2006, at 9:30 AM, Michael Schoen wrote:

construct_sql is executed in the initialize method of the association
and it handles the substitution of the sql.


Ah, thanks. So the bug is that it doesn't do the right thing if the  
finder_sql has newlines (the regex needs to be modified). I'll  
submit a patch.


Nice catch.

jeremy

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Re: [Rails-core] bug in has_many count?

2006-01-19 Thread Jeremy Kemper

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On Jan 19, 2006, at 12:59 PM, Michael Schoen wrote:
construct_sql is executed in the initialize method of the  
association

and it handles the substitution of the sql.


Ah, thanks. So the bug is that it doesn't do the right thing if  
the finder_sql has newlines (the regex needs to be modified).  
I'll submit a patch.

Nice catch.


Um, so even with this patch I'm not totally happy, but the fix is  
Oracle-specific, so not sure if it belongs in the core.


When I'm using finder_sql, it's often because I've needed to supply  
a sql hint to get the right performance (isn't Oracle grand). So my  
finder_sql is something like...


"SELECT /*+ INDEX(FOO$I) */ * FROM ..."

Unfortunately, when this gets auto-converted into counter_sql, the  
hint gets wiped away as well. And if I needed a hint for the find,  
I also need a hint for the count.


Would you be open to a patch that made the regexp uglier but didn't  
kill the sql hint? Or should I just specify both finder_sql and  
counter_sql?


Sure. I think we should try to preserve SQL hints if only for the  
next programmer to come along with the notion that Rails will eat his  
hairy custom SELECT and grin right back. Plus, MySQL has a similar  
hint syntax, and every patch lends a welcome bit of polish..


Thanks,
jeremy
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Re: [Rails-core] How should we do away with the rubysess white page of death?

2006-01-26 Thread Jeremy Kemper

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On Jan 26, 2006, at 8:40 AM, Duane Johnson wrote:
Jamis Buck and I had a few ideas tonight that would each take care  
of the CgiRequest bug where switching between Rails apps that have  
different classes (models) stored in the session causes the whole  
app to crash without a trace.  Of course, the problem is only  
present when using the FileStore to store session data, since if  
the sessions are being stored in the DB, there shouldn't be any  
conflict between apps.


The rubysess. file prefix and cookie names are configurable so the  
app generator may:


  class ApplicationController < ActionController::Base
session :prefix => '<%= @app_name %>.', :session_key => '<%=  
@app_name %>'

  end

Best,
jeremy
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Re: [Rails-core] Edge + Webrick + Helloworld now fails

2006-02-27 Thread Jeremy Kemper

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On Feb 27, 2006, at 4:04 PM, Kyle Maxwell wrote:

This stopped working rather recently.


 NoMethodError in #

undefined method `verify!' for {}:Hash

RAILS_ROOT: script/../config/..
Application Trace | Framework Trace | Full Trace

./script/../config/../vendor/rails/activerecord/lib/active_record/ 
connection_adapters/abstract/connection_specification.rb:71:in

`verify_connection_cache!'


Very recently!

See http://dev.rubyonrails.org/ticket/3979

jeremy
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Re: [Rails-core] Rails 1.1 is coming

2006-02-27 Thread Jeremy Kemper

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On Feb 27, 2006, at 6:24 PM, Bob Silva wrote:
I'll also have the date_helper patch updated to trunk tonight. Not  
sure
what's wrong with it yet but bitsweat asked for updated tests  
against trunk

so...


Hey, it simply doesn't apply cleanly to trunk. The patch looks great.

Thanks,
jeremy
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Re: [Rails-core] Edge + Webrick + Helloworld now fails

2006-02-28 Thread Jeremy Kemper

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On Feb 28, 2006, at 9:12 AM, Tom Ward wrote:

On 2/28/06, Stefan Kaes <[EMAIL PROTECTED]> wrote:

Tom Ward wrote:

A second line of attack is the allows_concurrency flag itself.  I
can't think when you'd ever want it to be false.

FCGI is single threaded. By having the flag, we can optimize AR for
single threaded apps.


True, but to me the existing optimization extremely premature.  With
allow_concurrency = true @connection_cache is a hash of hashes, while
when false its just a single hash.  The only saving (when running
single threaded) is a single hash lookup.  This can't be worth the
extra complication in the code, can it?


I agree, Tom, particularly when we pay the price in brittle code.

For now, I'm removing the setting from the webrick server so folks  
can continue working with trunk.


I'd like to see allow_concurrency wiped out.

Best,
jeremy
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Re: [Rails-core] Database Adapter Plugin

2006-02-28 Thread Jeremy Kemper

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On Feb 28, 2006, at 11:40 AM, Derrick Spell wrote:
With all the talk of 1.1, and with all the patches being applied, I  
realized that my laziness (or lack of free time, depending on your  
perspective) means that my OpenBase database adapter will most  
likely not make it into 1.1.  This is mainly because I never got  
around to making it a plugin so that it could be throughly tested  
by the OpenBase community before being committed.  Well, I'm  
finally motivated...


Do you think the adapter is ready for 1.1?  Are you prepared to  
maintain it?  ;)


I'd prefer to include it in the release (perhaps with caveats?) if  
it's feature complete modulo migrations support.  The Firebird  
adapter took a similar path into Rails 1.0.


Best,
jeremy
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Re: [Rails-core] Use svnmerge.py for merging trunk to stable branch

2006-04-09 Thread Jeremy Kemper

On Apr 7, 2006, at 12:29 PM, Blair Zajac wrote:
Now that Rails has a stable branch, I would like to suggest  
considering using svnmerge.py to manage the revisions in trunk that  
you want to pull over into the branch.  It'll make life much easier  
in managing commits to trunk and then merging them to stable.


I've been using svk to similar effect.  It's great.

http://svk.elixus.org

jeremy
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Re: [Rails-core] Issue in ActiveRecord generated reader methods

2006-05-09 Thread Jeremy Kemper

On May 9, 2006, at 6:12 PM, Jonathan Viney wrote:

I agree that seems odd. I can't see any reason not to use
read_attribute there, as it will type cast if necessary.
define_read_method could be simplified and Column#type_cast_code
should be unnecesary perhaps.


Inline type casting tailored to each attribute's column type is  
faster than does-it-all read_attribute. It's for performance alone:  
you may disable generated readers with no loss of functionality  
(though you may consider generating your own..)


jeremy
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Re: [Rails-core] Re: Rails AR/Oracle Unit Test: [4335] failed

2006-05-12 Thread Jeremy Kemper

On May 11, 2006, at 10:19 PM, Michael A. Schoen wrote:
This can be fixed by enhancing the test to support Oracle's sql  
type for integer, which is NUMBER(38), but this test also exposed a  
difference in how the Oracle adapter is handling sql_type, and I'd  
like to just fix that.


I'll have a patch submitted by tomorrow that'll fix this.


Each database seems to handle integer limits differently (number of  
bytes vs. digits), so I removed the additional test cases since the  
limit isn't cross-platform anyway. Guess I could have left MySQL in..


Please do update if you add specialized :limit handling for Oracle as  
well.


Thanks!
jeremy
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Re: [Rails-core] real bind variables

2006-05-25 Thread Jeremy Kemper

On May 25, 2006, at 3:07 PM, Michael A. Schoen wrote:
So I've finally bitten the bullet and patched the AR Oracle adapter  
to use real OCI bind variables. This has a measurable impact on the  
client side, and a huge impact on a high volume Oracle server due  
to the sql hard parses that it saves.


I assume bind variables and prepared statements are orthogonal.


2. Do other db's support a similar concept with a similar benefit?  
Should this functionality be implemented at a higher level (ie., in  
the abstract adapter) to make it usable for other dbs?


Yes: the native postgres bindings support bind variables.  In any  
case, we can move the existing behavior to the abstract adapter as a  
fallback.



As an aside, only the pretty comprehensive AR unit tests make a  
patch like this even possible to think about. So kudos to everyone  
on that point.


And kudos to you! Thank you for your conscientious maintainership.

jeremy
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Re: [Rails-core] Routing rewrite, checked in

2006-06-01 Thread Jeremy Kemper

On Jun 1, 2006, at 12:04 PM, Rodney Ramdas wrote:

hi

this seems to give issues:

simply doing,

def helper_routes
 with_routing do |set|
set.draw { set.connect ':controller/:action/:id' }
[..]
end
end

throws

NoMethodError: undefined method `connect' for
#

i don't quite get why since RouteSet#draw simply yields to Mapper
which does connect.


Use the map that set.draw yields:

with_routing do |set|
  set.draw do |map|
map.connect ':controller/:action/:id'
  end
end

jeremy
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Re: [Rails-core] rubygems support for rails plugins (patch)

2006-06-18 Thread Jeremy Kemper

On Jun 16, 2006, at 1:26 PM, John-Mason P. Shackelford wrote:

Rails committers, (feedback from others welcome)

Would you accept a patch--in principle, obviously the implementation
matters--that would:


Yes. Gems are a great fit and the reason we've pushed back on  
proposals such as dependency management (wheel redux).




1. allow Rails to load a plugin from gem


How does this look?
Is there a manifest of gem plugins + versions in vendor plugins?
A 'stub' plugin per gem?


2. permit the plugin script to install them


How can the script distinguish rails plugin gems?

script/generate looks for a _generator suffix -- brittle and ugly.

Gems could use richer metadata here (even as simple as tags.)
Another way is to host a plugins-only gemserver at  
plugins.rubyonrails.org



3. give the plugin generator's default Rake file the ability to
package and publish a gem
4. introduce freeze/unfreeze for plugins


Cool.



Why?

- RubyGems's handling of dependencies and updates is mature.
- When I am writing my own plugin I want the source in my project, but
when I am using other people's code I want to express that as an
application dependency.
- Some Rails plugins have a life outside of Rails, e.g. models that
get used by non Rails apps.


I agree. I'm interested to see how RubyGems manages the task.

Best,
jeremy
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Re: [Rails-core] simply_restful plugin

2006-06-28 Thread Jeremy Kemper

On Jun 28, 2006, at 10:18 AM, Zack Chandler wrote:

I love the simply_restful plugin (beautiful work Jamis) but wonder why
the naming convention changed to look for pluralized controllers by
default.

If you do:
 map.resource :message
then you must have a MessagesController.

If you already have a MessageController you need:
 map.resource :message, :controller => 'message'
which is slightly less DRY.

Is this a change in convention to pluralize controller names?  Almost
all the examples in the docs and rails books use singular controller
names.  I'd be happy to make a patch if this is an unwanted
side-effect of the plugin.


simply_restful addresses collections of resources and their members  
so pluralization feels natural. (The scaffold generator has used  
pluralized names for months, too.)


jeremy
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Re: [Rails-core] Re: [Ruby on Rails] #5544: [PATCH] Add underscore_table_names option to ActiveRecord::Base

2006-06-29 Thread Jeremy Kemper

On Jun 29, 2006, at 3:36 PM, Obie Fernandez wrote:

I think my patch is merited, but if nobody else thinks so then I'll
defer to the wisdom of the group. That said, the workaround provided
by bitsweat doesn't make sense to me. I wonder if perhaps I didn't get
my point across in the description.

Oh and I don't quite understand how it is pleasantly pluggable either.
Looks like a total hack to me.


It's not a total hack workaround, it's a feature! Passing a block to  
set_table_name is an ugly dog (the cache var doesn't help) but it's  
there so you can transform the default table name as you like. A  
plugin is natural considering the usage you want is uncommon and  
covered by the public API.


jeremy
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Re: [Rails-core] help finishing a patch for label helpers? [#362]

2006-07-05 Thread Jeremy Kemper

On Jul 5, 2006, at 5:43 PM, Peter Michaux wrote:

Rick, it looks like a little more than hacking. What is stopping your
patch from going into the core?


(BTW, you quoted his answer just a few lines up.)

I use labels too and would like to see them in the standard form  
builder.


jeremy
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Re: [Rails-core] Showing SQL Server some love...

2006-07-07 Thread Jeremy Kemper

On Jul 7, 2006, at 6:51 PM, Ryan Tomayko wrote:

On 7/6/06, Tom Ward <[EMAIL PROTECTED]> wrote:
There are a fair few issues against the SQL Server db adapter that  
I'd

like to see fixed.  There are also a couple of features I'd like to
add, but don't really want to until these bugs have been fixed. It's
time to show SQL Server some love!


Tom has arguably contributed every bit as much if not more to the
apapter as myself so I'd like to nominate him. He was probably the
right guy for the job months ago.


Thanks for all the work you've put into the adapter, Ryan. Good luck  
migrating away.


So, Tom, you looking to be a bug magnet? ;)

jeremy
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Re: [Rails-core] Float -> BigDecimal

2006-07-08 Thread Jeremy Kemper

On Jul 8, 2006, at 11:00 PM, Michael A. Schoen wrote:
But just wondering if folks considered the performance impact of  
the change? From a simple test it seems that BigDecimal math is  
about twice as slow as using Floats.


BigDecimal is slow, but numeric(10,3) ought to be meaningful.

Anyone tried LongDecimal?  http://rubyforge.org/projects/long-decimal

jeremy
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Re: [Rails-core] Testing has_many :dependent => :restrict

2006-07-26 Thread Jeremy Kemper

On Jul 26, 2006, at 6:06 AM, Daniel N wrote:

I've had a crack at this one and it is as I feared.

If I define the restrict association first, then the destroy chain  
is halted and all is well.  But if I have an association where  
a :dependent => :destroy is declared before the association  
with :restrict then the first association is destroyed before the  
destroy chain is halted.


You can wrap the destroy method to leapfrog the callback chain.

associations.rb, configure_dependency_*

  case reflection.options[:dependent]
when :restrict
  class_eval <<-end_eval
def destroy_with_has_many_#{reflection.name}
  unless #{reflection.name}.blank?
raise DestroyRestricted.new(self, # 
{reflection.name.inspect})

  end
end

alias_method_chain :destroy, "has_many_#{reflection.name}"
  end_eval
# ...
  end


base.rb

  module ActiveRecord
class DestroyRestricted < ActiveRecordError
  def initialize(model, by)
super "#{model.class.name} #{model.id} destroy restricted by  
#{by}"

  end
end
  end


I have taken my first real plunge into the rails source and found a  
number of places where I thought a transaction might go to prevent  
this but to no avail.  Actually my head is spinning a bit trying to  
put all the pieces of active_record together.


For this to work I think I need to put a transaction around the  
entire destroy chain, but I have no idea how to do this.


Any pointers anyone could give would be great.


destroy and its callbacks are wrapped in a single transaction (see  
transactions.rb) so you can raise an exception to rollback.



example:

  class ParentController < ApplicationController
def destroy
  @parent.destroy
  redirect_to parent_url(@parent)
rescue ActiveRecord::DestroyRestricted => restricted
  flash[:error] = restricted.message
  redirect_to :back
end
  end


Best,
jeremy
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Re: [Rails-core] Testing has_many :dependent => :restrict

2006-07-29 Thread Jeremy Kemper

On Jul 28, 2006, at 8:29 PM, Daniel N wrote:
Just a thought tho.  By raising an exception, this would put  
destroy into a different category, this should perhaps be destroy!  
to fit with the other methods that raise errors.


Good call. Really, destroy_with_callbacks should rollback the  
transaction when a before_destroy callback is false rather than  
returning false and committing. Then the implementation simplifies  
back to


   case reflection.options[:dependent]
 when :restrict
   class_eval "before_destroy { |model| model.# 
{reflection.name}.blank? }"


jeremy


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Re: [Rails-core] Re: Why are has_one objects resaved when the parentis saved?

2006-07-29 Thread Jeremy Kemper

On Jul 28, 2006, at 11:22 PM, Josh Susser wrote:
The other way to do dirty checking is to do it on an object basis,  
instead of by columns.  I'd love to be able to track what  
associated objects had been modified so that when I save an order,  
all the line items that got modified get saved too.  Then of course  
I'll want an identity map in AR so that I don't have multiple,  
possibly inconsistent model objects floating around for just one  
record.  I think I can see a good way to do the identity map, but  
only the vaguest idea of how AR might save dirtied children  
automatically.  Would these things be PDI-level enhancements, or a  
waste of time to look into?


I recall Jamis did object-level dirty checking by MD5ing attributes.  
Search for 'smart saves' on trac (when it's back with us, the living- 
breathing.)


jeremy
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Re: [Rails-core] Re: Why are has_one objects resaved when the parentis saved?

2006-07-29 Thread Jeremy Kemper

On Jul 28, 2006, at 2:04 PM, Marcel Molina Jr. wrote:

On Fri, Jul 28, 2006 at 01:07:59PM -0700, Bob Silva wrote:
I'm curious to know if "dirty" checking was considered during the  
design
process of AR. It would add performance benefits (configurable?)  
for larger
tables and associations in a write heavy environment especially if  
you have
text or blob fields in your tables. Anyone care to PDI this as a  
plugin?


As I remember it, about a year ago Jeremy Kemper implemented dirty  
column
tracking  and decided against it for reasons I forget. Something  
wasn't right

in the cosmos though.

If I am remembering correctly, maybe he could share what the issues  
were

before someone dives into implementing a plugin for this.


Performance hurt. Having write_attribute mark dirty[attr] = true  
would be great, but attributes may be modified in-place once they're  
read, so we have to hash or copy them and look for changes.


A seductive alternative to is to treat attribute values as immutable  
- freeze the value returned from read_attribute. Then we're on easy  
street.


jeremy
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Re: [Rails-core] error on ticket submit

2006-08-01 Thread Jeremy Kemper

On Aug 1, 2006, at 1:34 PM, Michael Genereux wrote:
Are all new, noncritical patches on hold for right now pending the  
new ticket page?  I've started editing documentation in the core  
Rails classes to make them more clear, fix typos, and in some  
cases, fill in undocumented public methods.  Speaking of which, is  
this what David wanted at RailsConf when he asked for more  
documentation?  I interpreted as such and then, after I'd done some  
work, I realized he may have meant the HOWTOs in the wiki.  Can  
someone on the core team give me clarity on what they would have a  
warm body do if they had them once a week for eight hours?


I'd like to see the docs thoroughly reviewed against the source and  
expanded with concise examples from the wiki et al. Think of the  
process as rcov for docs - the behavior of a method should be  
transparently and completely reflected in its docs. See AR  
associations for some poor examples (Dave T ran into considerable  
ambiguity documenting them for agile2.)


Interestingly, something that'd make documentation easier and clearer  
would be more managable unit tests. Since a method's tests are our  
ultimate measure of its expected behavior, good documentation starts  
there. Tests are roughly organized but a jumble when it comes to  
"where is method X behavior tested?". Break em up those ice floes and  
reorganize similarly to Active Support's lib layout.


Thanks Michael -
jeremy
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Re: [Rails-core] Adding :having to Active Record

2006-08-05 Thread Jeremy Kemper

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On Aug 4, 2006, at 11:19 PM, Blake Watters wrote:
I have recently needed support for having clauses for some advanced  
find queries in my application. I've implemented this in a mixin  
that implements a new set of finders and query constructors that  
mirror the core Active Record, except for the additional support  
for :having as an argument. This has reached stability and now  
works with eager loading and scopings, so I'd like to extract it  
from my application as a patch against Active Record core.
I thought I would talk this through before producing a patch and  
missing the mark and having to refine, so a few questions:
1) Can I confirm that :having feels like core functionality? I see  
that it is part of the calculation module already, but I need it to  
restrict my find results set and not just perform counts and so  
forth. Basically I am performing a join and want to use :having to  
check that the joined results match a threshold (i.e. HAVING count 
(visits.id) > 0).


Sounds good, Blake. Do have a patch, or is it tied into your app?

2) I have identified the following places where :having needs to be  
added:

   associations.rb - construct_finder_sql_with_included_associations
   base.rb - construct_finder_sql
   base.rb - validate_find_options


construct_finder_sql + :having is enough to support Calculations too,  
so we can DRY out its duplicate sql construction.



Anywhere else that I am missing?
3) I believe the following tests to be necessary for a good patch,  
what am I missing?

   - vanilla find with having, single table
   - find with having, with join tables. Having against base table
   - find with having, with join tables. Having against join table
   - find with having, using scope
   - find with having, using eager loading


+ behavior in nested scopes

4) Documentation. Update the doc blocks to include the key and  
document in the patch ticket?


Yes, please.

5) Errors. Do I need to provide any validation on the arguments or  
new errors or can I just let AR blow up with exceptions if you ask  
for a boneheaded query? The group clauses here become very important.


You can just let the db raise exceptions as usual.

6) I develop on MySQL exclusively. What kind of cross database  
problems do I need to consider? (i.e. I haven't researched that  
having clauses will work everywhere). Is there a database specific  
element to what I am trying to accomplish?


Please give PostgreSQL a shot. If it works there, it's likely to work  
elsewhere.


Thanks!
jeremy
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Re: [Rails-core] documentation

2006-08-08 Thread Jeremy Kemper

On Aug 8, 2006, at 3:47 PM, Michael Koziarski wrote:

For example I just submitted a documentation patch
(http://dev.rubyonrails.org/ticket/5762) for the :from option for the
ActiveRecord find method.  I'd think that adding support for this
option should have had documentation associated with it when it was
added to begin with.

Just me 2 cents.


Trac could probably be updated to include this.   But I certainly
don't apply patches which don't have test cases *and* documentation.
It's already our process, but should probably make it explicit to save
shotgun submitters some time.



How about two new ticket resolutions:

  untested

  undocumented

to put some shorelines our brimming, open sea?

Anyone may resolve untested and undocumented tickets as such. Anyone  
may reopen when satisifed. Sprinkle with reports to assist those who  
want to team up either.


jeremy

(I considered 'unverified' and 'unimplemented' for bugs/patches too -  
maybe too much? :)

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Re: [Rails-core] Fix for cascading includeded associations

2006-08-14 Thread Jeremy Kemper
On 8/13/06, Rich Collins <[EMAIL PROTECTED]> wrote:
I noticed that you can't cascade an include more than twice on thesame association (for has_many at least).  It seems that theassociation name table alias is used as a key to store the number oftimes that the association has been used in the include.  This allows
the alias to change for each subsequent join.  However, the way thatthe code was written caused a new key to be used each time the aliascount was incremented.  As a result, you could not cascade more thantwice on an association:
Tree.find(:first, :include => {:children => {:children => :children}})The attached diff fixes this issue and passes all unit tests.Thanks Rich!
http://dev.rubyonrails.org/changeset/4758  (trac willing)jeremy
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Re: [Rails-core] More changes to cascading associations

2006-08-15 Thread Jeremy Kemper
Is this a patch against trunk, which includes your previous patch?On 8/15/06, Rich Collins <[EMAIL PROTECTED]
> wrote:I added additional fixes to recursively cascading associations.  This
patch includes fixes for has_many :through and habtm (with tests) aswell as tests for has_one and belongs_to.  I created some new modelsfor testing and added the required sql for creating and dropping thetables.  This is _only_ tested on postgresql.
As a quick summary, here are some examples that previously would notwork and are now tested and/or fixed:root_node = RecursivelyCascadedTreeMixin.find(:first, :include=>{:first_child=>{:first_child=>:first_child}}, :order => '
mixins.id')leaf_node = RecursivelyCascadedTreeMixin.find(:first, :include=>{:parent=>{:parent=>:parent}}, :order => 'mixins.id DESC')source = 
Vertex.find(:first, :include=>{:sinks=>{:sinks=>{:sinks=>:sinks}}}, :order => 'vertices.id')sink = Vertex.find(:first, :include=>{:sources=>{:sources=>{:sources=>:sources}}}, :order => '
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Re: [Rails-core] test::unit namespace pollution

2006-08-15 Thread Jeremy Kemper
On 8/15/06, court3nay <[EMAIL PROTECTED]> wrote:
Background: I've got an app that doesn't use the DB (long story..)and running tests is certainly a chore when you don't have any DBconnection.Also, due to the way rails extends TestCase, running tests in  your
suite that aren't tied to AR can have issues.Part of the solution involved renaming the main test class, such thattest_helper becomesclass NoDbTest < Test::Unit::TestCaseand all the unit and functional tests inherit from NoDbTest.
I propose that rails' test class inherits from, rather than extends,Text::Unit::TestCase.Someone had a patch to skip the db if the database config is empty or
no fixtures are declared. It broke the internal AR tests, but that
could be worked around by providing a dummy config. It'd solve your immediate problem.Rails should do the right thing with TestCase but getting there demands a painful deprecation step nobody's eager to take.

jeremy
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Re: [Rails-core] More changes to cascading associations

2006-08-15 Thread Jeremy Kemper
On 8/15/06, Rich Collins <[EMAIL PROTECTED]> wrote:
Yes.  I did an update before I did the diff.Ah, appears the attachment is the same diff as the last patch. Could you pass along the new patch?Thanks,jeremy
On Aug 15, 2006, at 9:18 PM, Jeremy Kemper wrote:
Is this a patch against trunk, which includes your previous patch?On 8/15/06, Rich Collins <
[EMAIL PROTECTED] > wrote:I added additional fixes to recursively cascading associations.  This
 patch includes fixes for has_many :through and habtm (with tests) aswell as tests for has_one and belongs_to.  I created some new modelsfor testing and added the required sql for creating and dropping the
tables.  This is _only_ tested on postgresql. As a quick summary, here are some examples that previously would notwork and are now tested and/or fixed:root_node = RecursivelyCascadedTreeMixin.find(:first, :include=>
{:first_child=>{:first_child=>:first_child}}, :order => ' mixins.id')leaf_node = RecursivelyCascadedTreeMixin.find
(:first, :include=>{:parent=>{:parent=>:parent}}, :order => 'mixins.id DESC')source = Vertex.find(:first, :include=>{:sinks=>{:sinks=>
{:sinks=>:sinks}}}, :order => 'vertices.id')sink = Vertex.find(:first, :include=>{:sources=>{:sources=>
{:sources=>:sources}}}, :order => ' vertices.id DESC')___
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Re: [Rails-core] More changes to cascading associations

2006-08-16 Thread Jeremy Kemper
On 8/16/06, Rich Collins <[EMAIL PROTECTED]> wrote:
Ah sorry I grabbed the old diff.  Here is the new one with the proposed changes.Thanks - http://dev.rubyonrails.org/changeset/4776
jeremyOn Aug 15, 2006, at 11:09 PM, Jeremy Kemper wrote:
On 8/15/06, Rich Collins <[EMAIL PROTECTED]
> wrote: Yes.  I did an update before I did the diff.
Ah, appears the attachment is the same diff as the last patch. Could you pass along the new patch?
On Aug 15, 2006, at 9:18 PM, Jeremy Kemper wrote: Is this a patch against trunk, which includes your previous patch?On 8/15/06, 
Rich Collins < [EMAIL PROTECTED] > wrote:
I added additional fixes to recursively cascading associations.  This  patch includes fixes for has_many :through and habtm (with tests) aswell as tests for has_one and belongs_to.  I created some new modelsfor testing and added the required sql for creating and dropping the
 tables.  This is _only_ tested on postgresql. As a quick summary, here are some examples that previously would notwork and are now tested and/or fixed:root_node = RecursivelyCascadedTreeMixin.find
(:first, :include=> {:first_child=>{:first_child=>:first_child}}, :order => ' mixins.id')leaf_node = 
RecursivelyCascadedTreeMixin.find (:first, :include=>{:parent=>{:parent=>:parent}}, :order => 'mixins.id
 DESC')source = Vertex.find(:first, :include=>{:sinks=>{:sinks=> {:sinks=>:sinks}}}, :order => 'vertices.id
')sink = Vertex.find(:first, :include=>{:sources=>{:sources=> {:sources=>:sources}}}, :order => ' 
vertices.id DESC')
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