[Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread Alex Black
Thanks for the help on this guys, looks promising.

On Dec 7, 12:57 pm, Ross Mellgren  wrote:
> Sha-bam
>
> http://github.com/dpp/liftweb/issues/#issue/229
>
> -Ross
>
> On Dec 7, 2009, at 12:43 PM, David Pollak wrote:
>
> > Is there a ticket for this?  I'm in ticket-closing mode today ;-)
>
> > On Mon, Dec 7, 2009 at 9:29 AM, Ross Mellgren   
> > wrote:
> > I looked at adding a Box variant, but it wasn't a strictly speaking  
> > trivial change since calcValue on BindParam is of type NodeSeq. I  
> > guess it could become Box[NodeSeq] and then when binding at element  
> > positions convert that to NodeSeq.Empty, but I also have had the  
> > need (which I've worked around) to be able to replace a single bound  
> > attribute with multiple result attributes, so I was thinking that it  
> > would be best to allow AttrBindParams to generate MetaData, not just  
> > a value.
>
> > I had written some code to play with this idea, but I didn't get too  
> > far because I was busy and needed feedback from other committers. I  
> > can return it to working tonight if there's interest.
>
> > -Ross
>
> > On Dec 7, 2009, at 12:22 PM, Alex Boisvert wrote:
>
> >> On Sun, Dec 6, 2009 at 8:28 PM, David Pollak  >> > wrote:
>
> >> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert  >> > wrote:
> >> Using the latest and greatest (master branch), I can't reproduce  
> >> the MatchError but I can reproduce the issue with the attribute  
> >> being generated if the value is null.
>
> >> How about adding a Box alternative rather than perpetuating a  
> >> paradigm based on null?
>
> >> Yes, that's better.  I'll do that.
>
> >> [Side diatribe:  Can't wait for a working scala.NotNull so we can  
> >> implicitly convert (non-null) literal values to Some() or Full()  
> >> instance and reduce verbosity]
>
> >> alex
>
> >> --
>
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>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread Ross Mellgren
Sha-bam

http://github.com/dpp/liftweb/issues/#issue/229

-Ross

On Dec 7, 2009, at 12:43 PM, David Pollak wrote:

> Is there a ticket for this?  I'm in ticket-closing mode today ;-)
>
> On Mon, Dec 7, 2009 at 9:29 AM, Ross Mellgren   
> wrote:
> I looked at adding a Box variant, but it wasn't a strictly speaking  
> trivial change since calcValue on BindParam is of type NodeSeq. I  
> guess it could become Box[NodeSeq] and then when binding at element  
> positions convert that to NodeSeq.Empty, but I also have had the  
> need (which I've worked around) to be able to replace a single bound  
> attribute with multiple result attributes, so I was thinking that it  
> would be best to allow AttrBindParams to generate MetaData, not just  
> a value.
>
> I had written some code to play with this idea, but I didn't get too  
> far because I was busy and needed feedback from other committers. I  
> can return it to working tonight if there's interest.
>
> -Ross
>
> On Dec 7, 2009, at 12:22 PM, Alex Boisvert wrote:
>
>> On Sun, Dec 6, 2009 at 8:28 PM, David Pollak > > wrote:
>>
>> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert > > wrote:
>> Using the latest and greatest (master branch), I can't reproduce  
>> the MatchError but I can reproduce the issue with the attribute  
>> being generated if the value is null.
>>
>> How about adding a Box alternative rather than perpetuating a  
>> paradigm based on null?
>>
>> Yes, that's better.  I'll do that.
>>
>> [Side diatribe:  Can't wait for a working scala.NotNull so we can  
>> implicitly convert (non-null) literal values to Some() or Full()  
>> instance and reduce verbosity]
>>
>> alex
>>
>> --
>>
>> 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.
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>> liftweb+unsubscr...@googlegroups.com 
>> .
>> For more options, visit this group at 
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>> .
>
>
> --
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>
>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread David Pollak
Is there a ticket for this?  I'm in ticket-closing mode today ;-)

On Mon, Dec 7, 2009 at 9:29 AM, Ross Mellgren  wrote:

> I looked at adding a Box variant, but it wasn't a strictly speaking trivial
> change since calcValue on BindParam is of type NodeSeq. I guess it could
> become Box[NodeSeq] and then when binding at element positions convert that
> to NodeSeq.Empty, but I also have had the need (which I've worked around) to
> be able to replace a single bound attribute with multiple result attributes,
> so I was thinking that it would be best to allow AttrBindParams to generate
> MetaData, not just a value.
>
> I had written some code to play with this idea, but I didn't get too far
> because I was busy and needed feedback from other committers. I can return
> it to working tonight if there's interest.
>
> -Ross
>
> On Dec 7, 2009, at 12:22 PM, Alex Boisvert wrote:
>
> On Sun, Dec 6, 2009 at 8:28 PM, David Pollak <
> feeder.of.the.be...@gmail.com> wrote:
>
>>
>> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert wrote:
>>
>>> Using the latest and greatest (master branch), I can't reproduce the
>>> MatchError but I can reproduce the issue with the attribute being generated
>>> if the value is null.
>>>
>>
>> How about adding a Box alternative rather than perpetuating a paradigm
>> based on null?
>>
>
> Yes, that's better.  I'll do that.
>
> [Side diatribe:  Can't wait for a working scala.NotNull so we can
> implicitly convert (non-null) literal values to Some() or Full() instance
> and reduce verbosity]
>
> alex
>
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>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread Ross Mellgren
I looked at adding a Box variant, but it wasn't a strictly speaking  
trivial change since calcValue on BindParam is of type NodeSeq. I  
guess it could become Box[NodeSeq] and then when binding at element  
positions convert that to NodeSeq.Empty, but I also have had the need  
(which I've worked around) to be able to replace a single bound  
attribute with multiple result attributes, so I was thinking that it  
would be best to allow AttrBindParams to generate MetaData, not just a  
value.

I had written some code to play with this idea, but I didn't get too  
far because I was busy and needed feedback from other committers. I  
can return it to working tonight if there's interest.

-Ross

On Dec 7, 2009, at 12:22 PM, Alex Boisvert wrote:

> On Sun, Dec 6, 2009 at 8:28 PM, David Pollak  > wrote:
>
> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert  
>  wrote:
> Using the latest and greatest (master branch), I can't reproduce the  
> MatchError but I can reproduce the issue with the attribute being  
> generated if the value is null.
>
> How about adding a Box alternative rather than perpetuating a  
> paradigm based on null?
>
> Yes, that's better.  I'll do that.
>
> [Side diatribe:  Can't wait for a working scala.NotNull so we can  
> implicitly convert (non-null) literal values to Some() or Full()  
> instance and reduce verbosity]
>
> alex
>
> --
>
> 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 
> .

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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread David Pollak
On Mon, Dec 7, 2009 at 9:22 AM, Alex Boisvert wrote:

> On Sun, Dec 6, 2009 at 8:28 PM, David Pollak <
> feeder.of.the.be...@gmail.com> wrote:
>
>>
>> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert wrote:
>>
>>> Using the latest and greatest (master branch), I can't reproduce the
>>> MatchError but I can reproduce the issue with the attribute being generated
>>> if the value is null.
>>>
>>
>> How about adding a Box alternative rather than perpetuating a paradigm
>> based on null?
>>
>
> Yes, that's better.  I'll do that.
>
> [Side diatribe:  Can't wait for a working scala.NotNull so we can
> implicitly convert (non-null) literal values to Some() or Full() instance
> and reduce verbosity]
>


Mmmm sweet tasty NotNull.



>
> alex
>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-07 Thread Alex Boisvert
On Sun, Dec 6, 2009 at 8:28 PM, David Pollak
wrote:

>
> On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert wrote:
>
>> Using the latest and greatest (master branch), I can't reproduce the
>> MatchError but I can reproduce the issue with the attribute being generated
>> if the value is null.
>>
>
> How about adding a Box alternative rather than perpetuating a paradigm
> based on null?
>

Yes, that's better.  I'll do that.

[Side diatribe:  Can't wait for a working scala.NotNull so we can implicitly
convert (non-null) literal values to Some() or Full() instance and reduce
verbosity]

alex

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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-06 Thread David Pollak
On Sun, Dec 6, 2009 at 7:25 PM, Alex Boisvert wrote:

> Using the latest and greatest (master branch), I can't reproduce the
> MatchError but I can reproduce the issue with the attribute being generated
> if the value is null.
>

How about adding a Box alternative rather than perpetuating a paradigm based
on null?


>
> I'll fix it tomorrow morning.
>
> alex
>
>
>
> On Sun, Dec 6, 2009 at 5:59 AM, Alex Black  wrote:
>
>> > If you output null for theattributevalue, theattributeis not
>> > rendered:
>>
>> I've just upgraded from 1.0 to 1.1-M6, and this doesn't seem to work
>> any more - could this be a bug in M6?
>>
>> Message: scala.MatchError: null
>>scala.runtime.ScalaRunTime$.boxArray(ScalaRunTime.scala:136)
>>net.liftweb.util.BindHelpers$class.mix$1(BindHelpers.scala:612)
>>net.liftweb.util.BindHelpers$class.net$liftweb$util$BindHelpers$
>> $bindByNameMixIn(BindHelpers.scala:618)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
>> $anonfun$apply$27.apply(BindHelpers.scala:440)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
>> $anonfun$apply$27.apply(BindHelpers.scala:436)
>>net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:436)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:424)
>>scala.Seq$class.flatMap(Seq.scala:294)
>>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
>> (BindHelpers.scala:424)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:444)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:424)
>>scala.Seq$class.flatMap(Seq.scala:294)
>>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
>> (BindHelpers.scala:424)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:444)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:424)
>>scala.Seq$class.flatMap(Seq.scala:294)
>>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
>> (BindHelpers.scala:424)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:444)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:424)
>>scala.Seq$class.flatMap(Seq.scala:294)
>>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
>> (BindHelpers.scala:424)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:444)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
>> $1$1.apply(BindHelpers.scala:424)
>>scala.Seq$class.flatMap(Seq.scala:294)
>>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
>> (BindHelpers.scala:424)
>>
>>  net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
>> 449)
>>
>>  net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
>> 409)
>>net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
>>net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:409)
>>net.liftweb.util.Helpers$.bind(Helpers.scala:29)
>>net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:380)
>>net.liftweb.util.Helpers$.bind(Helpers.scala:29)
>>
>>
>> >
>> > scala> bind("stuff", ,
>> AttrBindParam("s",Text("checked"),"checked"))
>> > res11: scala.xml.NodeSeq = > checked="checked">
>> >
>> > scala> bind("stuff", ,
>> AttrBindParam("s",null,"selected"))
>> > res12: scala.xml.NodeSeq = 
>> >
>> > /Jeppe
>>
>> --
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-06 Thread Alex Boisvert
Using the latest and greatest (master branch), I can't reproduce the
MatchError but I can reproduce the issue with the attribute being generated
if the value is null.

I'll fix it tomorrow morning.

alex


On Sun, Dec 6, 2009 at 5:59 AM, Alex Black  wrote:

> > If you output null for theattributevalue, theattributeis not
> > rendered:
>
> I've just upgraded from 1.0 to 1.1-M6, and this doesn't seem to work
> any more - could this be a bug in M6?
>
> Message: scala.MatchError: null
>scala.runtime.ScalaRunTime$.boxArray(ScalaRunTime.scala:136)
>net.liftweb.util.BindHelpers$class.mix$1(BindHelpers.scala:612)
>net.liftweb.util.BindHelpers$class.net$liftweb$util$BindHelpers$
> $bindByNameMixIn(BindHelpers.scala:618)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
> $anonfun$apply$27.apply(BindHelpers.scala:440)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
> $anonfun$apply$27.apply(BindHelpers.scala:436)
>net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:436)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:424)
>scala.Seq$class.flatMap(Seq.scala:294)
>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
> (BindHelpers.scala:424)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:444)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:424)
>scala.Seq$class.flatMap(Seq.scala:294)
>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
> (BindHelpers.scala:424)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:444)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:424)
>scala.Seq$class.flatMap(Seq.scala:294)
>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
> (BindHelpers.scala:424)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:444)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:424)
>scala.Seq$class.flatMap(Seq.scala:294)
>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
> (BindHelpers.scala:424)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:444)
>net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
> $1$1.apply(BindHelpers.scala:424)
>scala.Seq$class.flatMap(Seq.scala:294)
>scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
>net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
> (BindHelpers.scala:424)
>
>  net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
> 449)
>
>  net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
> 409)
>net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
>net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:409)
>net.liftweb.util.Helpers$.bind(Helpers.scala:29)
>net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:380)
>net.liftweb.util.Helpers$.bind(Helpers.scala:29)
>
>
> >
> > scala> bind("stuff", ,
> AttrBindParam("s",Text("checked"),"checked"))
> > res11: scala.xml.NodeSeq =  checked="checked">
> >
> > scala> bind("stuff", ,
> AttrBindParam("s",null,"selected"))
> > res12: scala.xml.NodeSeq = 
> >
> > /Jeppe
>
> --
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-06 Thread Jeppe Nejsum Madsen
Alex Black  writes:

>> If you output null for theattributevalue, theattributeis not
>> rendered:
>
> I've just upgraded from 1.0 to 1.1-M6, and this doesn't seem to work
> any more - could this be a bug in M6?

Maybe. The code I wrote worked in 1.1-SNAPSHOT at the time.you could
try this just to verify.

/Jeppe

[...]

>> scala> bind("stuff", , 
>> AttrBindParam("s",Text("checked"),"checked"))
>> res11: scala.xml.NodeSeq = 
>>
>> scala> bind("stuff", , 
>> AttrBindParam("s",null,"selected"))            
>> res12: scala.xml.NodeSeq = 

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[Lift] Re: How can one bind value-less attributes?

2009-12-06 Thread Alex Black
> If you output null for theattributevalue, theattributeis not
> rendered:

I've just upgraded from 1.0 to 1.1-M6, and this doesn't seem to work
any more - could this be a bug in M6?

Message: scala.MatchError: null
scala.runtime.ScalaRunTime$.boxArray(ScalaRunTime.scala:136)
net.liftweb.util.BindHelpers$class.mix$1(BindHelpers.scala:612)
net.liftweb.util.BindHelpers$class.net$liftweb$util$BindHelpers$
$bindByNameMixIn(BindHelpers.scala:618)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
$anonfun$apply$27.apply(BindHelpers.scala:440)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind$1$1$
$anonfun$apply$27.apply(BindHelpers.scala:436)
net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:436)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:424)
scala.Seq$class.flatMap(Seq.scala:294)
scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
(BindHelpers.scala:424)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:444)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:424)
scala.Seq$class.flatMap(Seq.scala:294)
scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
(BindHelpers.scala:424)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:444)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:424)
scala.Seq$class.flatMap(Seq.scala:294)
scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
(BindHelpers.scala:424)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:444)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:424)
scala.Seq$class.flatMap(Seq.scala:294)
scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
(BindHelpers.scala:424)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:444)
net.liftweb.util.BindHelpers$$anonfun$bind$2$$anonfun$in_bind
$1$1.apply(BindHelpers.scala:424)
scala.Seq$class.flatMap(Seq.scala:294)
scala.xml.NodeSeq.flatMap(NodeSeq.scala:34)
net.liftweb.util.BindHelpers$$anonfun$bind$2.in_bind$1
(BindHelpers.scala:424)
net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
449)
net.liftweb.util.BindHelpers$$anonfun$bind$2.apply(BindHelpers.scala:
409)
net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:409)
net.liftweb.util.Helpers$.bind(Helpers.scala:29)
net.liftweb.util.BindHelpers$class.bind(BindHelpers.scala:380)
net.liftweb.util.Helpers$.bind(Helpers.scala:29)


>
> scala> bind("stuff", , 
> AttrBindParam("s",Text("checked"),"checked"))
> res11: scala.xml.NodeSeq = 
>
> scala> bind("stuff", , 
> AttrBindParam("s",null,"selected"))            
> res12: scala.xml.NodeSeq = 
>
> /Jeppe

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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-02 Thread Jeppe Nejsum Madsen
David Pollak  writes:

> null... shudder. :-)

Yeaah, somehow it doesn't look nice anymore :-) Your idea with an Option/Box
for attribute binding seems nice & clean

/Jeppe

>
> On Wed, Dec 2, 2009 at 12:32 AM, Jeppe Nejsum Madsen wrote:
>
>> Alex Black  writes:
>>
>> > Is there a good/reasonable way to conditionally output
>> > checked="checked" or output nothing?
>>
>> If you output null for the attribute value, the attribute is not
>> rendered:
>>
>> scala> bind("stuff", ,
>> AttrBindParam("s",Text("checked"),"checked"))
>> res11: scala.xml.NodeSeq = > checked="checked">
>>
>> scala> bind("stuff", ,
>> AttrBindParam("s",null,"selected"))
>> res12: scala.xml.NodeSeq = 
>>
>> /Jeppe
>>
>> --
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-02 Thread David Pollak
null... shudder. :-)

On Wed, Dec 2, 2009 at 12:32 AM, Jeppe Nejsum Madsen wrote:

> Alex Black  writes:
>
> > Is there a good/reasonable way to conditionally output
> > checked="checked" or output nothing?
>
> If you output null for the attribute value, the attribute is not
> rendered:
>
> scala> bind("stuff", ,
> AttrBindParam("s",Text("checked"),"checked"))
> res11: scala.xml.NodeSeq =  checked="checked">
>
> scala> bind("stuff", ,
> AttrBindParam("s",null,"selected"))
> res12: scala.xml.NodeSeq = 
>
> /Jeppe
>
> --
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[Lift] Re: How can one bind value-less attributes?

2009-12-02 Thread Alex Black
Thanks Jeppe, that works perfectly.

On Dec 2, 3:32 am, Jeppe Nejsum Madsen  wrote:
> Alex Black  writes:
> > Is there a good/reasonable way to conditionally output
> > checked="checked" or output nothing?
>
> If you output null for the attribute value, the attribute is not
> rendered:
>
> scala> bind("stuff", , 
> AttrBindParam("s",Text("checked"),"checked"))
> res11: scala.xml.NodeSeq = 
>
> scala> bind("stuff", , 
> AttrBindParam("s",null,"selected"))            
> res12: scala.xml.NodeSeq = 
>
> /Jeppe

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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-02 Thread Jeppe Nejsum Madsen
Alex Black  writes:

> Is there a good/reasonable way to conditionally output
> checked="checked" or output nothing?

If you output null for the attribute value, the attribute is not
rendered:

scala> bind("stuff", , 
AttrBindParam("s",Text("checked"),"checked"))
res11: scala.xml.NodeSeq = 

scala> bind("stuff", , 
AttrBindParam("s",null,"selected"))
res12: scala.xml.NodeSeq = 

/Jeppe

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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread David Pollak
On Tue, Dec 1, 2009 at 3:59 PM, Alex Black  wrote:

> I appreciate the suggestion, I did think of that, but one of my goals
> is to keep the XHTML out of my code..!
>
> This seems a tough problem in general.. Ideally in snippets there
> would be no presentation, just data I think, e.g. in this case a
> boolean.  The XHTML template would then form the presentation of that
> data, whether it be a checkbox or whatever.
>
> Perhaps I'm approaching this from the wrong angle?
>






class MySnippet {
  def render(in: NodeSeq): NodeSeq = bind("stuff", in, "checked" -> (myNode
=> myNode % (if (shouldBeChecked) ("checked" -> "checked") else Null))
}

It would be nice to do:





class MySnippet {
  def render(in: NodeSeq): NodeSeq = bind("stuff", in,
FuncAttrBindParam("checked", _ => if (shouldBeChecked) Some("checked") else
None, "checked"))
}

But that's not yet possible.  Maybe it's worth a ticket.



> - Alex
>
> On Dec 1, 6:55 pm, Alex Boisvert  wrote:
> > Here's one way,
> >
> > Helpers.bind(...,
> >   "myElement" -> (if (condition)  else  > myAttribute="value"/>))
> >
> > I don't think there's a bind helper to conditionally output the
> attribute.
> > Maybe our bind experts know.
> >
> > alex
> >
> > On Tue, Dec 1, 2009 at 3:29 PM, Alex Black  wrote:
> > > Thanks Alex.  That would work, but I'm looking for a more generic
> > > solution.
> >
> > > Restating the problem: Based on some condition I want to generate an
> > > attribute or not generate an attribute, e.g.:
> >
> > > 
> >
> > > OR
> >
> > > 
> >
> > > - Alex
> >
> > > On Dec 1, 6:23 pm, Alex Boisvert  wrote:
> > > > You can use SHtml.checkbox() to easily generate the checkbox,
> >
> > > > bind(...,
> > > >   "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
> > > > doSomething())
> > > > )
> >
> > > > The first parameter is whether the checkbox should be checked by
> default.
> >
> > > > The second parameter is a function to do something when form is
> > > submitted.
> >
> > > > alex
> >
> > > > On Tue, Dec 1, 2009 at 2:50 PM, Alex Black 
> wrote:
> > > > > Is there a good/reasonable way to conditionally output
> > > > > checked="checked" or output nothing?
> >
> > > > > My code looks like this:
> >
> > > > >  bind("manufacturer", xhtml,
> > > > >  AttrBindParam("selected", Text("selected"),
> "selected"))
> >
> > > > > I can add an if statement, and then output Text("notSelected")
> > > > > instead, but that doesn't seem to work - the correct  is
> not
> > > > > selected.
> >
> > > > > - Alex
> >
> > > > > On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> > > > > > Valueless attributes are prohibited by XML. The proper XHTML
> > > > > > formulation is to use the name of the attribute as the value,
> e.g.
> > > > > > checked="checked"
> >
> > > > > > -Ross
> >
> > > > > > On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
> >
> > > > > > > For example, if my html template looks like this:
> >
> > > > > > > 
> > > > > > >foobar
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > 
> >
> > > > > > > I'd like to render it conditionally as:
> >
> > > > > > >foobar
> > > > > > >
> >
> > > > > > > Is there syntax to add the "checked" to the checkbox? perhaps
> > > similar
> > > > > > > to the syntax to bind attribute values?
> >
> > > > > > > Thanks!
> >
> > > > > > > - Alex
> >
> > > > > > > --
> >
> > > > > > > You received this message because you are subscribed to the
> Google
> > > > > > > Groups "Lift" group.
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> 
> >
> > > 
> 
> >
> >
> > > > > > > .
> > > > > > > For more options, visit this group athttp://
> > > > > groups.google.com/group/liftweb?hl=en
> > > > > > > .
> >
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Ross Mellgren
I think you are approaching it from the wrong angle. Lift is not an MVC style 
framework -- the template and the snippets coordinate (conspire?) to deliver 
XHTML. The actual tags might be in the snippet, if there's any logic being 
applied to their creation / modification / etc.

-Ross

On Dec 1, 2009, at 6:59 PM, Alex Black wrote:

> I appreciate the suggestion, I did think of that, but one of my goals
> is to keep the XHTML out of my code..!
> 
> This seems a tough problem in general.. Ideally in snippets there
> would be no presentation, just data I think, e.g. in this case a
> boolean.  The XHTML template would then form the presentation of that
> data, whether it be a checkbox or whatever.
> 
> Perhaps I'm approaching this from the wrong angle?
> 
> - Alex
> 
> On Dec 1, 6:55 pm, Alex Boisvert  wrote:
>> Here's one way,
>> 
>> Helpers.bind(...,
>>   "myElement" -> (if (condition)  else > myAttribute="value"/>))
>> 
>> I don't think there's a bind helper to conditionally output the attribute.
>> Maybe our bind experts know.
>> 
>> alex
>> 
>> On Tue, Dec 1, 2009 at 3:29 PM, Alex Black  wrote:
>>> Thanks Alex.  That would work, but I'm looking for a more generic
>>> solution.
>> 
>>> Restating the problem: Based on some condition I want to generate an
>>> attribute or not generate an attribute, e.g.:
>> 
>>> 
>> 
>>> OR
>> 
>>> 
>> 
>>> - Alex
>> 
>>> On Dec 1, 6:23 pm, Alex Boisvert  wrote:
 You can use SHtml.checkbox() to easily generate the checkbox,
>> 
 bind(...,
   "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
 doSomething())
 )
>> 
 The first parameter is whether the checkbox should be checked by default.
>> 
 The second parameter is a function to do something when form is
>>> submitted.
>> 
 alex
>> 
 On Tue, Dec 1, 2009 at 2:50 PM, Alex Black  wrote:
> Is there a good/reasonable way to conditionally output
> checked="checked" or output nothing?
>> 
> My code looks like this:
>> 
>  bind("manufacturer", xhtml,
>  AttrBindParam("selected", Text("selected"), "selected"))
>> 
> I can add an if statement, and then output Text("notSelected")
> instead, but that doesn't seem to work - the correct  is not
> selected.
>> 
> - Alex
>> 
> On Dec 1, 5:30 pm, Ross Mellgren  wrote:
>> Valueless attributes are prohibited by XML. The proper XHTML
>> formulation is to use the name of the attribute as the value, e.g.
>> checked="checked"
>> 
>> -Ross
>> 
>> On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
>> 
>>> For example, if my html template looks like this:
>> 
>>> 
>>>foobar
>>>
>>>
>>>
>>> 
>> 
>>> I'd like to render it conditionally as:
>> 
>>>foobar
>>>
>> 
>>> Is there syntax to add the "checked" to the checkbox? perhaps
>>> similar
>>> to the syntax to bind attribute values?
>> 
>>> Thanks!
>> 
>>> - Alex
>> 
>>> --
>> 
>>> You received this message because you are subscribed to the Google
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>> 
>>> .
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> groups.google.com/group/liftweb?hl=en
>>> .
>> 
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[Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Black
I appreciate the suggestion, I did think of that, but one of my goals
is to keep the XHTML out of my code..!

This seems a tough problem in general.. Ideally in snippets there
would be no presentation, just data I think, e.g. in this case a
boolean.  The XHTML template would then form the presentation of that
data, whether it be a checkbox or whatever.

Perhaps I'm approaching this from the wrong angle?

- Alex

On Dec 1, 6:55 pm, Alex Boisvert  wrote:
> Here's one way,
>
> Helpers.bind(...,
>   "myElement" -> (if (condition)  else  myAttribute="value"/>))
>
> I don't think there's a bind helper to conditionally output the attribute.
> Maybe our bind experts know.
>
> alex
>
> On Tue, Dec 1, 2009 at 3:29 PM, Alex Black  wrote:
> > Thanks Alex.  That would work, but I'm looking for a more generic
> > solution.
>
> > Restating the problem: Based on some condition I want to generate an
> > attribute or not generate an attribute, e.g.:
>
> > 
>
> > OR
>
> > 
>
> > - Alex
>
> > On Dec 1, 6:23 pm, Alex Boisvert  wrote:
> > > You can use SHtml.checkbox() to easily generate the checkbox,
>
> > > bind(...,
> > >   "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
> > > doSomething())
> > > )
>
> > > The first parameter is whether the checkbox should be checked by default.
>
> > > The second parameter is a function to do something when form is
> > submitted.
>
> > > alex
>
> > > On Tue, Dec 1, 2009 at 2:50 PM, Alex Black  wrote:
> > > > Is there a good/reasonable way to conditionally output
> > > > checked="checked" or output nothing?
>
> > > > My code looks like this:
>
> > > >          bind("manufacturer", xhtml,
> > > >              AttrBindParam("selected", Text("selected"), "selected"))
>
> > > > I can add an if statement, and then output Text("notSelected")
> > > > instead, but that doesn't seem to work - the correct  is not
> > > > selected.
>
> > > > - Alex
>
> > > > On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> > > > > Valueless attributes are prohibited by XML. The proper XHTML
> > > > > formulation is to use the name of the attribute as the value, e.g.
> > > > > checked="checked"
>
> > > > > -Ross
>
> > > > > On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
>
> > > > > > For example, if my html template looks like this:
>
> > > > > > 
> > > > > >                foobar
> > > > > >                
> > > > > >                
> > > > > >                
> > > > > > 
>
> > > > > > I'd like to render it conditionally as:
>
> > > > > >                foobar
> > > > > >                
>
> > > > > > Is there syntax to add the "checked" to the checkbox? perhaps
> > similar
> > > > > > to the syntax to bind attribute values?
>
> > > > > > Thanks!
>
> > > > > > - Alex
>
> > > > > > --
>
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>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Boisvert
Here's one way,

Helpers.bind(...,
  "myElement" -> (if (condition)  else ))

I don't think there's a bind helper to conditionally output the attribute.
Maybe our bind experts know.

alex

On Tue, Dec 1, 2009 at 3:29 PM, Alex Black  wrote:

> Thanks Alex.  That would work, but I'm looking for a more generic
> solution.
>
> Restating the problem: Based on some condition I want to generate an
> attribute or not generate an attribute, e.g.:
>
> 
>
> OR
>
> 
>
> - Alex
>
> On Dec 1, 6:23 pm, Alex Boisvert  wrote:
> > You can use SHtml.checkbox() to easily generate the checkbox,
> >
> > bind(...,
> >   "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
> > doSomething())
> > )
> >
> > The first parameter is whether the checkbox should be checked by default.
> >
> > The second parameter is a function to do something when form is
> submitted.
> >
> > alex
> >
> > On Tue, Dec 1, 2009 at 2:50 PM, Alex Black  wrote:
> > > Is there a good/reasonable way to conditionally output
> > > checked="checked" or output nothing?
> >
> > > My code looks like this:
> >
> > >  bind("manufacturer", xhtml,
> > >  AttrBindParam("selected", Text("selected"), "selected"))
> >
> > > I can add an if statement, and then output Text("notSelected")
> > > instead, but that doesn't seem to work - the correct  is not
> > > selected.
> >
> > > - Alex
> >
> > > On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> > > > Valueless attributes are prohibited by XML. The proper XHTML
> > > > formulation is to use the name of the attribute as the value, e.g.
> > > > checked="checked"
> >
> > > > -Ross
> >
> > > > On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
> >
> > > > > For example, if my html template looks like this:
> >
> > > > > 
> > > > >foobar
> > > > >
> > > > >
> > > > >
> > > > > 
> >
> > > > > I'd like to render it conditionally as:
> >
> > > > >foobar
> > > > >
> >
> > > > > Is there syntax to add the "checked" to the checkbox? perhaps
> similar
> > > > > to the syntax to bind attribute values?
> >
> > > > > Thanks!
> >
> > > > > - Alex
> >
> > > > > --
> >
> > > > > You received this message because you are subscribed to the Google
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> 
> >
> > > > > .
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> > > groups.google.com/group/liftweb?hl=en
> > > > > .
> >
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[Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Black
Thanks Alex.  That would work, but I'm looking for a more generic
solution.

Restating the problem: Based on some condition I want to generate an
attribute or not generate an attribute, e.g.:



OR



- Alex

On Dec 1, 6:23 pm, Alex Boisvert  wrote:
> You can use SHtml.checkbox() to easily generate the checkbox,
>
> bind(...,
>   "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
> doSomething())
> )
>
> The first parameter is whether the checkbox should be checked by default.
>
> The second parameter is a function to do something when form is submitted.
>
> alex
>
> On Tue, Dec 1, 2009 at 2:50 PM, Alex Black  wrote:
> > Is there a good/reasonable way to conditionally output
> > checked="checked" or output nothing?
>
> > My code looks like this:
>
> >          bind("manufacturer", xhtml,
> >              AttrBindParam("selected", Text("selected"), "selected"))
>
> > I can add an if statement, and then output Text("notSelected")
> > instead, but that doesn't seem to work - the correct  is not
> > selected.
>
> > - Alex
>
> > On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> > > Valueless attributes are prohibited by XML. The proper XHTML
> > > formulation is to use the name of the attribute as the value, e.g.
> > > checked="checked"
>
> > > -Ross
>
> > > On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
>
> > > > For example, if my html template looks like this:
>
> > > > 
> > > >                foobar
> > > >                
> > > >                
> > > >                
> > > > 
>
> > > > I'd like to render it conditionally as:
>
> > > >                foobar
> > > >                
>
> > > > Is there syntax to add the "checked" to the checkbox? perhaps similar
> > > > to the syntax to bind attribute values?
>
> > > > Thanks!
>
> > > > - Alex
>
> > > > --
>
> > > > 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 athttp://
> > groups.google.com/group/liftweb?hl=en
> > > > .
>
> > --
>
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Re: [Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Boisvert
You can use SHtml.checkbox() to easily generate the checkbox,

bind(...,
  "checkbox" -> SHtml.checkbox(isChecked, checked => if (checked)
doSomething())
)

The first parameter is whether the checkbox should be checked by default.

The second parameter is a function to do something when form is submitted.

alex


On Tue, Dec 1, 2009 at 2:50 PM, Alex Black  wrote:

> Is there a good/reasonable way to conditionally output
> checked="checked" or output nothing?
>
> My code looks like this:
>
>  bind("manufacturer", xhtml,
>  AttrBindParam("selected", Text("selected"), "selected"))
>
> I can add an if statement, and then output Text("notSelected")
> instead, but that doesn't seem to work - the correct  is not
> selected.
>
> - Alex
>
>
> On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> > Valueless attributes are prohibited by XML. The proper XHTML
> > formulation is to use the name of the attribute as the value, e.g.
> > checked="checked"
> >
> > -Ross
> >
> > On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
> >
> > > For example, if my html template looks like this:
> >
> > > 
> > >foobar
> > >
> > >
> > >
> > > 
> >
> > > I'd like to render it conditionally as:
> >
> > >foobar
> > >
> >
> > > Is there syntax to add the "checked" to the checkbox? perhaps similar
> > > to the syntax to bind attribute values?
> >
> > > Thanks!
> >
> > > - Alex
> >
> > > --
> >
> > > 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 athttp://
> groups.google.com/group/liftweb?hl=en
> > > .
>
> --
>
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> "Lift" group.
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>
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[Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Black
Is there a good/reasonable way to conditionally output
checked="checked" or output nothing?

My code looks like this:

  bind("manufacturer", xhtml,
  AttrBindParam("selected", Text("selected"), "selected"))

I can add an if statement, and then output Text("notSelected")
instead, but that doesn't seem to work - the correct  is not
selected.

- Alex


On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> Valueless attributes are prohibited by XML. The proper XHTML  
> formulation is to use the name of the attribute as the value, e.g.  
> checked="checked"
>
> -Ross
>
> On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
>
> > For example, if my html template looks like this:
>
> > 
> >                foobar
> >                
> >                
> >                
> > 
>
> > I'd like to render it conditionally as:
>
> >                foobar
> >                
>
> > Is there syntax to add the "checked" to the checkbox? perhaps similar
> > to the syntax to bind attribute values?
>
> > Thanks!
>
> > - Alex
>
> > --
>
> > 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.
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> > .
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> > athttp://groups.google.com/group/liftweb?hl=en
> > .

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[Lift] Re: How can one bind value-less attributes?

2009-12-01 Thread Alex Black
Thanks, I didn't know that!

On Dec 1, 5:30 pm, Ross Mellgren  wrote:
> Valueless attributes are prohibited by XML. The proper XHTML  
> formulation is to use the name of the attribute as the value, e.g.  
> checked="checked"
>
> -Ross
>
> On Dec 1, 2009, at 5:28 PM, Alex Black wrote:
>
> > For example, if my html template looks like this:
>
> > 
> >                foobar
> >                
> >                
> >                
> > 
>
> > I'd like to render it conditionally as:
>
> >                foobar
> >                
>
> > Is there syntax to add the "checked" to the checkbox? perhaps similar
> > to the syntax to bind attribute values?
>
> > Thanks!
>
> > - Alex
>
> > --
>
> > You received this message because you are subscribed to the Google  
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> > .
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> > .

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