dynamic view and model loading?

Michiel,
	If you are posting the data to this page, you should be able to use
the stylesheet method you have shown putting this as the @view in the page
entry of the page flow
  

If you want to get it out of a database, you could use a sequence of
processors in the XPL to build the input for your view, that XPL can then go
into @model of the page-flow.
  

As far as I know you can only specify files as values of view and model, I
can't see how this would help you to provide a url?
  

Ryan

Ryan Puddephatt
Software Engineer

Teleflex Group - IT UK
1 Michaelson Square
Livingston
West Lothian
Scotland
EH54 7DP

e> [hidden email]
t> +44(0)1506 407 110
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-----Original Message-----
From: Michiel Roos [[hidden email]] 
Sent: 21 November 2006 15:31
To: [hidden email]
Subject: [ops-users] dynamic view and model loading?

Dear list,

I would very much like to build an application where (sane and 
trained) users make their own xforms and models and place them 
in a database.

I can successfully select a model and a view from a database 
and then use them in a view for output on the screen.

I still have to use the view to select parts of the 
db_selected_view something like so:

<xsl:stylesheet version="1.0"
 xmlns:xforms="http://www.w3.org/2002/xforms"
 xmlns:xhtml="http://www.w3.org/1999/xhtml"
 xmlns:xi="http://www.w3.org/2001/XInclude"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
 <xsl:template match="/">
   <xhtml:html>
     <xhtml:head>
       <xforms:model id="main-model">
        
         <!-- main instance -->
         <xforms:instance id="instance">
           <xsl:copy-of select="/model/mymodel"/>
         </xforms:instance>
        
         <!-- validation rules -->
         <xforms:bind nodeset="instance('instance')">
           <xsl:copy-of
select="/view/xhtml:html/xhtml:head/xforms:model/xforms:bind"/>
         </xforms:bind>
    
         <xforms:instance id="blah">
           <xsl:copy-of
select="/view/xhtml:html/xhtml:head/xforms:model/xforms:instanc
e[@id = 'blah']/blah"/>
         </xforms:instance>

       </xforms:model>
     </xhtml:head>
     <xhtml:body>
       <xsl:copy-of select="/view/xhtml:html/xhtml:body"/>
     </xhtml:body>
   </xhtml:html>
 </xsl:template>
</xsl:stylesheet>

I would however like to forward (maybe using redirect?) my 
model and view to a page object that can directly use them.

Now I have only seen 'files' used as model and view in the 
documentation:
<page id="nop" path-info="/nop" model="mymod.xpl" view="myview.xsl"/>

Whereas I would like to do:
<page id="nop" path-info="/nop" model="/stuff/mymod" 
view="/stuff/myview"/> Wherein stuff would be data forwarded 
to page="nop" by an empty action using an xu:update statement.

Is it possible to use ehrm . . . . 'page-flow-pipelines' ?

Or something to that extent? Or is there a solution under my 
nose that I am missing?

Cheers,


Michiel Roos
netcreators.com



    

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Hi,

I have a need to show/hide table rows using xforms:group based on the 
existence of an optional element in the data instance.  For example:

<table>
   <xforms:group ref=".[Optional_Element]">
         <tr>  ..... </tr>
    </xforms:group>

   <xforms:group ref=".[not(Optional_Element)]">
         <tr>  ..... </tr>
    </xforms:group>
</table>

The reason for this is that based on the existence of the 
Optional_Element, the row/cell layout is different (rowspans and 
colspans are different).

The problem I'm having is that the Orbeon Forms engine generates a
<span> for each <xforms:group> tag within the table to control 
visibility of the table rows, which unfortunately doesn't work in 
Firefox or IE.  It appears that the reliable way to hide table rows in 
Firefox and IE is to have a <tbody style="display:none;"> around the 
rows to be hidden.

So my question/proposal is: can we generate a <tbody> tag with the 
appropriate xforms CSS classes instead of a <span> whenever an 
<xforms:group> tag is embedded within a table?  Or please enlighten me 
if there's an alternative way to reliably show/hide table rows. 
Thanks in advance.

Larry T. Chen
Sr. Software Engineer
Intelenet Communications, Inc.

  

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Larry,

As you noticed, this won't work and is not supported at the moment. The only thing you should consider supported around <xhtml:tr> is <xforms:repeat>.

(Note that XForms, in principle, does not even intend to support <xforms:repeat> around <xhtml:tr>, because the XHTML DTD does not support anything between <xhtml:table> or <xhtml:tbody> and <xhtml:tr>. This explains why the XForms repeat attributes were introduced. But there is a debate around this, and in particular at Orbeon we don't think any of this makes much sense.)

I see two workarounds for the moment: control visibility from within <xhtml:td> (which has the drawback that the <xhtml:tr> is probably still visible), or play with the relevance of repeat iterations:

<xforms:bind nodeset="some-element" relevant="some-condition"/>

<xforms:repeat nodeset="some-element">
  <xhtml:tr>
    ...

-Erik

Larry T. Chen wrote:

Hi,

I have a need to show/hide table rows using xforms:group based on the existence of an optional element in the data instance.  For example:

<table>
  <xforms:group ref=".[Optional_Element]">
        <tr>  ..... </tr>
   </xforms:group>

  <xforms:group ref=".[not(Optional_Element)]">
        <tr>  ..... </tr>
   </xforms:group>
</table>

The reason for this is that based on the existence of the Optional_Element, the row/cell layout is different (rowspans and colspans are different).

The problem I'm having is that the Orbeon Forms engine generates a
<span> for each <xforms:group> tag within the table to control visibility of the table rows, which unfortunately doesn't work in Firefox or IE.  It appears that the reliable way to hide table rows in Firefox and IE is to have a <tbody style="display:none;"> around the rows to be hidden.

So my question/proposal is: can we generate a <tbody> tag with the appropriate xforms CSS classes instead of a <span> whenever an <xforms:group> tag is embedded within a table?  Or please enlighten me if there's an alternative way to reliably show/hide table rows. Thanks in advance.

Larry T. Chen
Sr. Software Engineer
Intelenet Communications, Inc.

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