[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example (removed now). As far as my specific issue, I
guess you're saying the best solution is for the framework to add
overload def -%(in: NodeSeq = NodeSeq) congruent with - -- should I
file a feature request? As you said, Group(FocusOnLoad...) doesn't
compile either because it returns a Node, not the currently required
Element. Did I misunderstand? In the short term how would you solve
this ?
Thanks,
- Luke
On Mar 6, 1:39 am, Marius marius.dan...@gmail.com wrote:
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
and the template invocation:
lift:surround with=default at=content
lift:Ajax.searchField id_msgs=messages
ajax:searchBox class=text type=search tabindex=1 /
hr class=space/
div id=resultz/div
div id=messages/div
/lift:Ajax.searchField
/lift:surround
My goal is an Ajax-enabled text input that gets focus when the page
loads and has various attributes of the input element set. I realize
I can use the SHtml.ajaxText variant that takes attribute-value pairs,
as in:
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (class, text), (type, search), (tabindex,
1)))
but I'm trying to keep the various element attributes in the template.
When I try to bind with:
searchBox -% doSearch _
instead of:
searchBox - doSearch _
I get the following compile error:
snippet/Ajax.scala:109: error: overloaded method value -% with
alternatives ((scala.xml.NodeSeq) =
scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam and
(Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam and
(net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindPa
ram
and (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam cannot be
applied to ((scala.xml.NodeSeq) = scala.xml.NodeSeq)
searchBox -% doSearch _
^
one error found
Why your doSearch function takes a msg parameter? ... it doesn't seam
to use it.
doSearch _ is a partially applied function and acts as a (NodeSeq) =
NodeSeq however -% has only a definition like:
def -%(in: NodeSeq = Elem)
while - also has
def -(in: NodeSeq = NodeSeq)
which is why you get the compile error. We should add the same
definition for NodeSeq = NodeSeq
You can simply say:
searchBox -% doSearch
and have def doSearch: NodeSeq = ...
FocusOnLoad returns a NodeSeq because it returns a sequence of nodes
which conceptually cannot be converted to an elem. You could try to
have a Group(FocusOnLoad ...) ... but Group is a Node not an Elem.
Between all the bind() and -()/-%() overloads and my general Scala /
Lift ignorance, I can't understand what the right way to resolve this
is. I think it has something to do with FocusOnLoad returning a
NodeSeq (input/script/) vs. an Element, but I don't know where to
go from here...
Thanks in advance,
- Luke
--
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[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example (removed now). As far as my specific issue, I
guess you're saying the best solution is for the framework to add
overload def -%(in: NodeSeq = NodeSeq) congruent with - -- should I
file a feature request? As you said, Group(FocusOnLoad...) doesn't
compile either because it returns a Node, not the currently required
Element. Did I misunderstand? In the short term how would you solve
this ?
Thanks,
- Luke
On Mar 6, 1:39 am, Marius marius.dan...@gmail.com wrote:
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
and the template invocation:
lift:surround with=default at=content
lift:Ajax.searchField id_msgs=messages
ajax:searchBox class=text type=search tabindex=1 /
hr class=space/
div id=resultz/div
div id=messages/div
/lift:Ajax.searchField
/lift:surround
My goal is an Ajax-enabled text input that gets focus when the page
loads and has various attributes of the input element set. I realize
I can use the SHtml.ajaxText variant that takes attribute-value pairs,
as in:
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (class, text), (type, search), (tabindex,
1)))
but I'm trying to keep the various element attributes in the template.
When I try to bind with:
searchBox -% doSearch _
instead of:
searchBox - doSearch _
I get the following compile error:
snippet/Ajax.scala:109: error: overloaded method value -% with
alternatives ((scala.xml.NodeSeq) =
scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam and
(Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam and
(net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindPa
ram
and (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam cannot be
applied to ((scala.xml.NodeSeq) = scala.xml.NodeSeq)
searchBox -% doSearch _
^
one error found
Why your doSearch function takes a msg parameter? ... it doesn't seam
to use it.
doSearch _ is a partially applied function and acts as a (NodeSeq) =
NodeSeq however -% has only a definition like:
def -%(in: NodeSeq = Elem)
while - also has
def -(in: NodeSeq = NodeSeq)
which is why you get the compile error. We should add the same
definition for NodeSeq = NodeSeq
You can simply say:
searchBox -% doSearch
and have def doSearch: NodeSeq = ...
FocusOnLoad returns a NodeSeq because it returns a sequence of nodes
which conceptually cannot be converted to an elem. You could try to
have a Group(FocusOnLoad ...) ... but Group is a Node not an Elem.
Between all the bind() and -()/-%() overloads and my general Scala /
Lift ignorance, I can't understand what the right way to resolve this
is. I think it has something to do with FocusOnLoad returning a
NodeSeq (input/script/) vs. an Element, but I don't know where to
go from here...
Thanks in advance,
- Luke
--
You received this message because you are subscribed to the Google Groups
Lift group.
To post to this group, send email to lift...@googlegroups.com.
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
In the short term you would solve it as I suggested:
Use in your bind
searchBox -% doSearch
and define your doSearch as:
def doSearch: NodeSeq = {
... do your stuff here
}
Actually thinking more into it there is a good reason for -% to not
have a (NodeSeq) = NodeSeq support. -% means that it preserves the
attributes specified in the template to the resulting node.But having
a bunch of attributes we can't apply them to a NodeSeq because aa
NodeSeq means a sequence of Nodes with no commn parent so we can;t
determine to which node we'd apply those attributes. AFAIK only an
Elem can have attributes.
On Mar 6, 6:45 pm, Luke Nezda lne...@gmail.com wrote:
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example (removed now). As far as my specific issue, I
guess you're saying the best solution is for the framework to add
overload def -%(in: NodeSeq = NodeSeq) congruent with - -- should I
file a feature request? As you said, Group(FocusOnLoad...) doesn't
compile either because it returns a Node, not the currently required
Element. Did I misunderstand?
You are correct. I mainly pointed to Group just as a reminder as it
can be useful to aggregate nodes. It wont work in your case.
In the short term how would you solve
this ?
Thanks,
- Luke
On Mar 6, 1:39 am, Marius marius.dan...@gmail.com wrote:
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
and the template invocation:
lift:surround with=default at=content
lift:Ajax.searchField id_msgs=messages
ajax:searchBox class=text type=search tabindex=1 /
hr class=space/
div id=resultz/div
div id=messages/div
/lift:Ajax.searchField
/lift:surround
My goal is an Ajax-enabled text input that gets focus when the page
loads and has various attributes of the input element set. I realize
I can use the SHtml.ajaxText variant that takes attribute-value pairs,
as in:
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (class, text), (type, search), (tabindex,
1)))
but I'm trying to keep the various element attributes in the template.
When I try to bind with:
searchBox -% doSearch _
instead of:
searchBox - doSearch _
I get the following compile error:
snippet/Ajax.scala:109: error: overloaded method value -% with
alternatives ((scala.xml.NodeSeq) =
scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam and
(Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam and
(net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindPa
ram
and (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam cannot be
applied to ((scala.xml.NodeSeq) = scala.xml.NodeSeq)
searchBox -% doSearch _
^
one error found
Why your doSearch function takes a msg parameter? ... it doesn't seam
to use it.
doSearch _ is a partially applied function and acts as a (NodeSeq) =
NodeSeq however -% has only a definition like:
def -%(in: NodeSeq = Elem)
while - also has
def -(in: NodeSeq = NodeSeq)
which is why you get the compile error. We should add the same
definition for NodeSeq = NodeSeq
You can simply say:
searchBox -% doSearch
and have def doSearch: NodeSeq = ...
FocusOnLoad returns a NodeSeq because it returns a sequence of nodes
which conceptually cannot be converted to an elem. You could try to
have a Group(FocusOnLoad ...) ... but Group is a Node not an Elem.
Between all the bind() and -()/-%() overloads and my general Scala /
Lift ignorance, I can't understand what the right way to resolve this
is. I think it has something to do with FocusOnLoad returning a
NodeSeq (input/script/) vs. an Element, but I don't know where to
go from here...
Thanks in advance,
- Luke
--
You received this message because you are subscribed to the Google Groups
Lift group.
To post to this group, send email to
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
You could also do it like this:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
SetValueAndFocus is already in JqJsCmds but it really should in in
JsCmds as it does not depend on JQuery.
On Mar 6, 10:10 pm, Marius marius.dan...@gmail.com wrote:
Ahh sorry for not posting this earlier.
Assume you know the id of your text box (say myfield) and you're using
JQuery.
import net.liftweb.http.js.jquery._
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(JqFocus(myfield)))
where:
object JqFocus {
def apply(id : String) = JqId(id) new JsExp with JQueryRight {
def toJsCmd = focus()
}
}
I can add JqFocus to Lift tomorrow (by opening a ticket) but could you
please try it first?
Br's,
Marius
On Mar 6, 9:00 pm, Luke Nezda lne...@gmail.com wrote:
Marius -
First, thank you for your time! (sorry for the accidental double
response post - browser fail :))
Ok, so below is my current solution. What I don't understand is how
to avoid hard coding the attributes when constructing the
SHtml.ajaxText AND getting that ajaxText's input to FocusOnLoad. I
understand how to leave off the parameter for doSearch (fixed below --
you're totally right, that was spurious) and I understand that passing
through attributes to a whole NodeSeq doesn't make much sense. What
I'm wondering is if there's some way of achieving both: FocusOnLoad
attribute pass through -- maybe a nested bind or something?
Thanks again,
- Luke
// get FocusOnLoad, hard code attributes
object AjaxWithFocusOnLoad extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:NodeSeq = {
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch
)
}
}
// ditch FocusOnLoad functionality, take advantage of attribute pass
through
object AjaxWithAttributePassThrough extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:Elem = {
//FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
// kill FocusOnLoad functionality, take advantage of attribute
pass through in bind below
SHtml.ajaxText(, q = SetHtml(resultz, Yawni.query(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
//searchBox - doSearch
// use attribute pass through variant
searchBox -% doSearch
)
}
}
On Mar 6, 10:57 am, Marius marius.dan...@gmail.com wrote:
In the short term you would solve it as I suggested:
Use in your bind
searchBox -% doSearch
and define your doSearch as:
def doSearch: NodeSeq = {
... do your stuff here
}
Actually thinking more into it there is a good reason for -% to not
have a (NodeSeq) = NodeSeq support. -% means that it preserves the
attributes specified in the template to the resulting node.But having
a bunch of attributes we can't apply them to a NodeSeq because aa
NodeSeq means a sequence of Nodes with no commn parent so we can;t
determine to which node we'd apply those attributes. AFAIK only an
Elem can have attributes.
On Mar 6, 6:45 pm, Luke Nezda lne...@gmail.com wrote:
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example (removed now). As far as my specific issue, I
guess you're saying the best solution is for the framework to add
overload def -%(in: NodeSeq = NodeSeq) congruent with - -- should I
file a feature request? As you said, Group(FocusOnLoad...) doesn't
compile either because it returns a Node, not the currently required
Element. Did I misunderstand?
You are correct. I mainly pointed to Group just as a reminder as it
can be useful to aggregate nodes. It wont work in your case.
In the short term how would you solve
this ?
Thanks,
- Luke
On Mar 6, 1:39 am, Marius marius.dan...@gmail.com wrote:
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
Hi, Marius -
Ok, I think I catch the drift of your solution. You said:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
which is missing a paren -- I think you meant:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
The gist of your solution is to append a Script (which references the
ajaxText input element by a manually introduced id) onto the NodeSeq
returned by bind() right ?
It works, and I appreciate your assistance, though it seems a shame to
have to give up the slick, functional FocusOnLoad wrapper, add an id,
and bolt this onto the end.
Thanks,
- Luke
On Mar 6, 2:39 pm, Marius marius.dan...@gmail.com wrote:
You could also do it like this:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
SetValueAndFocus is already in JqJsCmds but it really should in in
JsCmds as it does not depend on JQuery.
On Mar 6, 10:10 pm, Marius marius.dan...@gmail.com wrote:
Ahh sorry for not posting this earlier.
Assume you know the id of your text box (say myfield) and you're using
JQuery.
import net.liftweb.http.js.jquery._
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(JqFocus(myfield)))
where:
object JqFocus {
def apply(id : String) = JqId(id) new JsExp with JQueryRight {
def toJsCmd = focus()
}
}
I can add JqFocus to Lift tomorrow (by opening a ticket) but could you
please try it first?
Br's,
Marius
On Mar 6, 9:00 pm, Luke Nezda lne...@gmail.com wrote:
Marius -
First, thank you for your time! (sorry for the accidental double
response post - browser fail :))
Ok, so below is my current solution. What I don't understand is how
to avoid hard coding the attributes when constructing the
SHtml.ajaxText AND getting that ajaxText's input to FocusOnLoad. I
understand how to leave off the parameter for doSearch (fixed below --
you're totally right, that was spurious) and I understand that passing
through attributes to a whole NodeSeq doesn't make much sense. What
I'm wondering is if there's some way of achieving both: FocusOnLoad
attribute pass through -- maybe a nested bind or something?
Thanks again,
- Luke
// get FocusOnLoad, hard code attributes
object AjaxWithFocusOnLoad extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:NodeSeq = {
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch
)
}
}
// ditch FocusOnLoad functionality, take advantage of attribute pass
through
object AjaxWithAttributePassThrough extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:Elem = {
//FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
// kill FocusOnLoad functionality, take advantage of attribute
pass through in bind below
SHtml.ajaxText(, q = SetHtml(resultz, Yawni.query(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
//searchBox - doSearch
// use attribute pass through variant
searchBox -% doSearch
)
}
}
On Mar 6, 10:57 am, Marius marius.dan...@gmail.com wrote:
In the short term you would solve it as I suggested:
Use in your bind
searchBox -% doSearch
and define your doSearch as:
def doSearch: NodeSeq = {
... do your stuff here
}
Actually thinking more into it there is a good reason for -% to not
have a (NodeSeq) = NodeSeq support. -% means that it preserves the
attributes specified in the template to the resulting node.But having
a bunch of attributes we can't apply them to a NodeSeq because aa
NodeSeq means a sequence of Nodes with no commn parent so we can;t
determine to which node we'd apply those attributes. AFAIK only an
Elem can have attributes.
On Mar 6, 6:45 pm, Luke Nezda lne...@gmail.com wrote:
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
Yes you understanding is correct.
FocusOnLoad is not an appropriate solution for your particular problem
as -% and FocusOnLoad operate on two different types which are not
interchangeable due to attributes preservation as you well noticed.
Besides the solution I posted above is similar with what FocusOnLoad
does except that it does the Script append a bit later on.
FocusOnLoad is not really functional well not in the sense of
functional programming :)
There are other approaches of course but would require more coding as
form the NodeSeq produced by FocusOnLoad(Shtml.ajaxText()) pattern
match for the Elem you want that add the attributes.
You could of course put the js code that puts the focus on your field
right in your template in the script tag and this would require no
Scala code for it. you code would simply be
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)))
)
and in your template
script type=text/javascript
$(document).ready(function() {
$(#myfield).focus();
});
/script
On 6 mar., 23:56, Luke Nezda lne...@gmail.com wrote:
Hi, Marius -
Ok, I think I catch the drift of your solution. You said:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
which is missing a paren -- I think you meant:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
The gist of your solution is to append a Script (which references the
ajaxText input element by a manually introduced id) onto the NodeSeq
returned by bind() right ?
It works, and I appreciate your assistance, though it seems a shame to
have to give up the slick, functional FocusOnLoad wrapper, add an id,
and bolt this onto the end.
Thanks,
- Luke
On Mar 6, 2:39 pm, Marius marius.dan...@gmail.com wrote:
You could also do it like this:
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(SetValueAndFocus(myfield, )))
SetValueAndFocus is already in JqJsCmds but it really should in in
JsCmds as it does not depend on JQuery.
On Mar 6, 10:10 pm, Marius marius.dan...@gmail.com wrote:
Ahh sorry for not posting this earlier.
Assume you know the id of your text box (say myfield) and you're using
JQuery.
import net.liftweb.http.js.jquery._
bind(ajax, xhtml,
searchBox -% SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q))
) ++ Script(JqOnLoad(JqFocus(myfield)))
where:
object JqFocus {
def apply(id : String) = JqId(id) new JsExp with JQueryRight {
def toJsCmd = focus()
}
}
I can add JqFocus to Lift tomorrow (by opening a ticket) but could you
please try it first?
Br's,
Marius
On Mar 6, 9:00 pm, Luke Nezda lne...@gmail.com wrote:
Marius -
First, thank you for your time! (sorry for the accidental double
response post - browser fail :))
Ok, so below is my current solution. What I don't understand is how
to avoid hard coding the attributes when constructing the
SHtml.ajaxText AND getting that ajaxText's input to FocusOnLoad. I
understand how to leave off the parameter for doSearch (fixed below --
you're totally right, that was spurious) and I understand that passing
through attributes to a whole NodeSeq doesn't make much sense. What
I'm wondering is if there's some way of achieving both: FocusOnLoad
attribute pass through -- maybe a nested bind or something?
Thanks again,
- Luke
// get FocusOnLoad, hard code attributes
object AjaxWithFocusOnLoad extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:NodeSeq = {
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch
)
}
}
// ditch FocusOnLoad functionality, take advantage of attribute pass
through
object AjaxWithAttributePassThrough extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:Elem = {
//FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
// kill FocusOnLoad functionality, take advantage of attribute
pass through in bind below
SHtml.ajaxText(, q =
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
On Mar 6, 10:57 am, Marius marius.dan...@gmail.com wrote:
Actually thinking more into it there is a good reason for -% to not
have a (NodeSeq) = NodeSeq support. -% means that it preserves the
attributes specified in the template to the resulting node.But having
a bunch of attributes we can't apply them to a NodeSeq because aa
NodeSeq means a sequence of Nodes with no commn parent so we can;t
determine to which node we'd apply those attributes. AFAIK only an
Elem can have attributes.
Why not just map the attributes over all of the top level elements in
the nodeseq?
scala val a = p class=blahtemplate/p.attributes
a: scala.xml.MetaData = class=blah
scala val s:NodeSeq = pfirst para/ppsecond para bwith nested
stuff/b/p
s: scala.xml.NodeSeq = pfirst para/ppsecond para bwith nested
stuff/b/p
scala val result: NodeSeq = s.map( { case e: Elem = e % a; case n =
n } )
result: scala.xml.NodeSeq = p class=blahfirst para/pp
class=blahsecond para bwith nested stuff/b/p
This is semantically just fine with regard to, say, an attribute of
class. Its the designer's own fault if they put in an attribute of id
into a tag that may get repeated.
As I recall, the current behavior of -% leads to some annoying
inconsistencies compared to -, eg not being able to just return
NodeSeq.Empty if you want to get rid of a bound tag.
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Re: [Lift] Re: Problem with FocusOnLoad and passing attributes through bind
The fundamental problem is that at the top bind level you want to use
FocusOnLoad which returns a NodeSeq, but you also want bind to pass along the
attributes, which has to operate at a lower level. So you can use bind twice,
nested.
Try this pattern:
bind(pre, xhtml,
label - {ns: NodeSeq =
FocusOnLoad(
bind(pre, ns,
label -% elem
)
)
}
)
-
Luke Nezdalne...@gmail.com wrote:
Marius -
First, thank you for your time! (sorry for the accidental double
response post - browser fail :))
Ok, so below is my current solution. What I don't understand is how
to avoid hard coding the attributes when constructing the
SHtml.ajaxText AND getting that ajaxText's input to FocusOnLoad. I
understand how to leave off the parameter for doSearch (fixed below --
you're totally right, that was spurious) and I understand that passing
through attributes to a whole NodeSeq doesn't make much sense. What
I'm wondering is if there's some way of achieving both: FocusOnLoad
attribute pass through -- maybe a nested bind or something?
Thanks again,
- Luke
// get FocusOnLoad, hard code attributes
object AjaxWithFocusOnLoad extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:NodeSeq = {
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch
)
}
}
// ditch FocusOnLoad functionality, take advantage of attribute pass
through
object AjaxWithAttributePassThrough extends DispatchSnippet {
override def dispatch = {
case searchField = searchField
}
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch:Elem = {
//FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (size,30), (tabindex, 1), (type,
search)))
// kill FocusOnLoad functionality, take advantage of attribute
pass through in bind below
SHtml.ajaxText(, q = SetHtml(resultz, Yawni.query(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
//searchBox - doSearch
// use attribute pass through variant
searchBox -% doSearch
)
}
}
On Mar 6, 10:57 am, Marius marius.dan...@gmail.com wrote:
In the short term you would solve it as I suggested:
Use in your bind
searchBox -% doSearch
and define your doSearch as:
def doSearch: NodeSeq = {
... do your stuff here
}
Actually thinking more into it there is a good reason for -% to not
have a (NodeSeq) = NodeSeq support. -% means that it preserves the
attributes specified in the template to the resulting node.But having
a bunch of attributes we can't apply them to a NodeSeq because aa
NodeSeq means a sequence of Nodes with no commn parent so we can;t
determine to which node we'd apply those attributes. AFAIK only an
Elem can have attributes.
On Mar 6, 6:45 pm, Luke Nezda lne...@gmail.com wrote:
Thanks for responding Marius. You're right, my doSearch method
doesn't need the msg parameter -- that was just an artifact of
transforming an example (removed now). As far as my specific issue, I
guess you're saying the best solution is for the framework to add
overload def -%(in: NodeSeq = NodeSeq) congruent with - -- should I
file a feature request? As you said, Group(FocusOnLoad...) doesn't
compile either because it returns a Node, not the currently required
Element. Did I misunderstand?
You are correct. I mainly pointed to Group just as a reminder as it
can be useful to aggregate nodes. It wont work in your case.
In the short term how would you solve
this ?
Thanks,
- Luke
On Mar 6, 1:39 am, Marius marius.dan...@gmail.com wrote:
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
Hello,
Bumping my own post since I hadn't received any feedback on this in a
few weeks. Maybe I didn't describe my issue well ?
Thanks in advance,
- Luke
On Feb 21, 8:12 pm, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
and the template invocation:
lift:surround with=default at=content
lift:Ajax.searchField id_msgs=messages
ajax:searchBox class=text type=search tabindex=1 /
hr class=space/
div id=resultz/div
div id=messages/div
/lift:Ajax.searchField
/lift:surround
My goal is an Ajax-enabled text input that gets focus when the page
loads and has various attributes of the input element set. I realize
I can use the SHtml.ajaxText variant that takes attribute-value pairs,
as in:
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (class, text), (type, search), (tabindex,
1)))
but I'm trying to keep the various element attributes in the template.
When I try to bind with:
searchBox -% doSearch _
instead of:
searchBox - doSearch _
I get the following compile error:
snippet/Ajax.scala:109: error: overloaded method value -% with
alternatives ((scala.xml.NodeSeq) =
scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam and
(Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam and
(net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam
and (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam cannot be
applied to ((scala.xml.NodeSeq) = scala.xml.NodeSeq)
searchBox -% doSearch _
^
one error found
Between all the bind() and -()/-%() overloads and my general Scala /
Lift ignorance, I can't understand what the right way to resolve this
is. I think it has something to do with FocusOnLoad returning a
NodeSeq (input/script/) vs. an Element, but I don't know where to
go from here...
Thanks in advance,
- Luke
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[Lift] Re: Problem with FocusOnLoad and passing attributes through bind
On 22 feb., 04:12, Luke Nezda lne...@gmail.com wrote:
Hello,
I am new to Scala and Lift. I am having a problem using 2 features
together which seem to work fine individually. Here's a simplified
piece of the code:
class Ajax {
def someResult(q:String) = spansome results for query {q}.../
span
// searchField closure
def searchField(xhtml: NodeSeq): NodeSeq = {
// build up an ajax text box
def doSearch(msg: NodeSeq) = {
// doesn't compile with bind: searchBox -% doSearch _
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
someResult(q
// compiles with bind: searchBox -% doSearch _
// SHtml.ajaxText(, q = SetHtml(resultz, someResult(q)))
}
// bind the view to the functionality
bind(ajax, xhtml,
searchBox - doSearch _
// doesn't compile if doSearch returns result of FocusOnLoad
//searchBox -% doSearch _
)
}
}
and the template invocation:
lift:surround with=default at=content
lift:Ajax.searchField id_msgs=messages
ajax:searchBox class=text type=search tabindex=1 /
hr class=space/
div id=resultz/div
div id=messages/div
/lift:Ajax.searchField
/lift:surround
My goal is an Ajax-enabled text input that gets focus when the page
loads and has various attributes of the input element set. I realize
I can use the SHtml.ajaxText variant that takes attribute-value pairs,
as in:
FocusOnLoad(SHtml.ajaxText(, q = SetHtml(resultz,
Yawni.query(q)), (class, text), (type, search), (tabindex,
1)))
but I'm trying to keep the various element attributes in the template.
When I try to bind with:
searchBox -% doSearch _
instead of:
searchBox - doSearch _
I get the following compile error:
snippet/Ajax.scala:109: error: overloaded method value -% with
alternatives ((scala.xml.NodeSeq) =
scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam and
(Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam and
(net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindPa
ram
and (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam cannot be
applied to ((scala.xml.NodeSeq) = scala.xml.NodeSeq)
searchBox -% doSearch _
^
one error found
Why your doSearch function takes a msg parameter? ... it doesn't seam
to use it.
doSearch _ is a partially applied function and acts as a (NodeSeq) =
NodeSeq however -% has only a definition like:
def -%(in: NodeSeq = Elem)
while - also has
def -(in: NodeSeq = NodeSeq)
which is why you get the compile error. We should add the same
definition for NodeSeq = NodeSeq
You can simply say:
searchBox -% doSearch
and have def doSearch: NodeSeq = ...
FocusOnLoad returns a NodeSeq because it returns a sequence of nodes
which conceptually cannot be converted to an elem. You could try to
have a Group(FocusOnLoad ...) ... but Group is a Node not an Elem.
Between all the bind() and -()/-%() overloads and my general Scala /
Lift ignorance, I can't understand what the right way to resolve this
is. I think it has something to do with FocusOnLoad returning a
NodeSeq (input/script/) vs. an Element, but I don't know where to
go from here...
Thanks in advance,
- Luke
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