[ops-users] Problem getting two-tier select1 to work as desired

Mackinnon, Mark A. wrote

Hi, all

I'm developing some forms that have a number of instances where the selections
available in one dropdown list (xforms:select1) are dependant on the selection
in a previous dropdown.  I'm attaching a simple example where the first select1
is a list of car makes and the second select1 is a list of models dependant on
the make selected.

I have a simple main instance that holds the VehicleMake and VehicleModel
fields.  There is an instance that holds the VehicleMake enumerated values, and
two instances of VehicleModel enumerations (I've made two attempts at this -
both shown - but neither works as I hoped).

In the first example, the desired value(s) is displayed in the 2nd dropdown; it
appears, however, that no "onChange" event fires, because the xforms:output
control that references the VehicleModel field of the main instance remains
blank until I select something other than the first entry in the list. If I
want to choose the first model, I must select the 2nd or higher model, then
return to the first model.  In the case where the vehicle make is "BMW" (which
only has one model), it is impossible to get the onChange event to fire.

As a "quick and dirty" fix, I tried adding a neutral model choice to the top of
the section for each make.  The value would be blank, and the text displayed to
the user would be "Choose from list", prompting them to move off this neutral
entry to an appropriate one, thus firing the event.  This should work even for
BMW.

The real issue is, I'm actually creating numerous vehicle make/model entries,
and the new problem is, once I've chosen the 2nd, 3rd, 1st ... entry in the
model list for one make, when I select a different make, the model list is
already pointing to that index, rather than index one which says "Choose from
list". You can see this by selecting the 2nd Audi model, than changing the
make to Chevrolet, or choose the 3rd Chevy model, then change the make to Audi.
 Or choose the first Audi model, then change the make to BMW (apparently, if
you choose the 2nd or higher Audi or Chevy, then choose BMW, you *do* get the
"Choose from list" (1st) entry because the previous index exceeds the number of
BMW entries).

I'd appreciate any suggestions; it seems multi-tiered dropdowns would be a
common issue.  I'd really like to find a solution that doesn't require
interleaving dummy entries with the real data, especially since the real
enumerations I'm working with have hundreds and even thousands of entries.

Thanks in advance,
Mark MacKinnon


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Mackinnon, Mark A. wrote

Hi, all

I'm developing some forms that have a number of instances where the selections
available in one dropdown list (xforms:select1) are dependant on the selection
in a previous dropdown.  I'm attaching a simple example where the first select1
is a list of car makes and the second select1 is a list of models dependant on
the make selected.

I have a simple main instance that holds the VehicleMake and VehicleModel
fields.  There is an instance that holds the VehicleMake enumerated values, and
two instances of VehicleModel enumerations (I've made two attempts at this -
both shown - but neither works as I hoped).

In the first example, the desired value(s) is displayed in the 2nd dropdown; it
appears, however, that no "onChange" event fires, because the xforms:output
control that references the VehicleModel field of the main instance remains
blank until I select something other than the first entry in the list. If I
want to choose the first model, I must select the 2nd or higher model, then
return to the first model.  In the case where the vehicle make is "BMW" (which
only has one model), it is impossible to get the onChange event to fire.

As a "quick and dirty" fix, I tried adding a neutral model choice to the top of
the section for each make.  The value would be blank, and the text displayed to
the user would be "Choose from list", prompting them to move off this neutral
entry to an appropriate one, thus firing the event.  This should work even for
BMW.

The real issue is, I'm actually creating numerous vehicle make/model entries,
and the new problem is, once I've chosen the 2nd, 3rd, 1st ... entry in the
model list for one make, when I select a different make, the model list is
already pointing to that index, rather than index one which says "Choose from
list". You can see this by selecting the 2nd Audi model, than changing the
make to Chevrolet, or choose the 3rd Chevy model, then change the make to Audi.
 Or choose the first Audi model, then change the make to BMW (apparently, if
you choose the 2nd or higher Audi or Chevy, then choose BMW, you *do* get the
"Choose from list" (1st) entry because the previous index exceeds the number of
BMW entries).

I'd appreciate any suggestions; it seems multi-tiered dropdowns would be a
common issue.  I'd really like to find a solution that doesn't require
interleaving dummy entries with the real data, especially since the real
enumerations I'm working with have hundreds and even thousands of entries.

Thanks in advance,
Mark MacKinnon


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djalma.saraiva wrote

I forgot to attach ..
Please find attached the code.

Note: I need the value of second combo box(combo2).

Thanks!

Djalma Saraiva
djalma.saraiva@projeler.com.br
Tel +55 51 2117 1872 | +55 11 3717 5271

www.projeler.com.br


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\cf4               \cf1 <\cf2 label\cf1 >\cf4 Selecione a linha\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
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\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "x10"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 X10/ACTION\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
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\cf4               \cf1 <\cf2 label\cf1 >\cf4 AGCO\cf1 </\cf2 label\cf1 >\cf0\par
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\cf4               \cf1 <\cf2 label\cf1 >\cf4 VOLKSWAGEN\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "x10"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 VALTRA\cf1 </\cf2 label\cf1 >\cf0\par
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\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "x10"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 FIAT\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
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\cf4               \cf1 <\cf2 label\cf1 >\cf4 INTERNATIONAL MEXICO\cf1 </\cf2 label\cf1 >\cf0\par
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\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "sprint"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 AGRALE\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "sprint"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 GM\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
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\cf4             \cf1 <\cf2 item \cf3 value\cf4 =\cf5 "cabecotei6"\cf1 >\cf0\par
\cf4               \cf1 <\cf2 label\cf1 >\cf4 INTERNATIONAL MELROSE\cf1 </\cf2 label\cf1 >\cf0\par
\cf4             \cf1 </\cf2 item\cf1 >\cf0\par
\cf4           \cf1 </\cf2 combo2_items\cf1 >\cf0\par
\cf4         \cf1 </\cf2 fe:input\cf1 >\cf0\par
\cf4       \cf1 </\cf2 xforms:instance\cf1 >\cf0\par
\cf4       \cf6 \cf0\par
\cf4       \cf1 <\cf2 xforms:instance \cf3 id\cf4 =\cf5 "taskmetadata"\cf1 >\cf0\par
\cf4         \cf1 <\cf2 taskmetadata\cf1 />\cf0\par
\cf4       \cf1 </\cf2 xforms:instance\cf1 >\cf0\par
\cf4       \cf6 \cf0\par
\cf4       \cf1 <\cf2 xforms:instance \cf3 id\cf4 =\cf5 "taskoutput"\cf1 >\cf0\par
\cf4         \cf1 <\cf2 fe:output\cf1 >\cf0\par
\cf4           \cf1 <\cf2 fe:lcombo2\cf1 />\cf0\par
\cf4           \cf1 <\cf2 fe:lcombo1\cf1 />\cf0\par
\cf4           \cf1 <\cf2 fe:combo1\cf1 />\cf0\par
\cf4           \cf1 <\cf2 fe:combo2\cf1 />\cf0\par
\cf4         \cf1 </\cf2 fe:output\cf1 >\cf0\par
\cf4       \cf1 </\cf2 xforms:instance\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xforms:action \cf3 ev:event\cf4 =\cf5 "xforms-ready"\cf1 >\cf0\par
\cf4         \cf1 <\cf2 xforms:action \cf3 xforms:if\cf4 =\cf5 "string(instance('taskoutput')/@saved) != 'true'"\cf1 >\cf0\par
\cf4           \cf1 <\cf2 xforms:setvalue \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:lcombo2" \cf3 value\cf4 =\cf5 "instance('taskinput')/fe:lcombo2"\cf1 />\cf0\par
\cf4           \cf1 <\cf2 xforms:setvalue \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:lcombo1" \cf3 value\cf4 =\cf5 "instance('taskinput')/fe:lcombo1"\cf1 />\cf0\par
\cf4           \cf1 <\cf2 xforms:setvalue \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:combo1" \cf3 value\cf4 =\cf5 "instance('taskinput')/fe:combo1"\cf1 />\cf0\par
\cf4           \cf1 <\cf2 xforms:setvalue \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:combo2" \cf3 value\cf4 =\cf5 "instance('taskinput')/fe:combo2"\cf1 />\cf0\par
\cf4         \cf1 </\cf2 xforms:action\cf1 >\cf0\par
\cf4       \cf1 </\cf2 xforms:action\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskoutput')/fe:lcombo2" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:lcombo2" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskoutput')/fe:lcombo1" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:lcombo1" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskoutput')/fe:combo1" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:combo1" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskoutput')/fe:combo2" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4       \cf1 <\cf2 xforms:bind \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:combo2" \cf3 relevant\cf4 =\cf5 "true()" \cf3 type\cf4 =\cf5 "xs:anyURI"\cf1 />\cf0\par
\cf4     \cf1 </\cf2 xforms:model\cf1 >\cf0\par
\cf4   \cf1 </\cf2 xhtml:head\cf1 >\cf0\par
\cf4   \cf1 <\cf2 xhtml:body\cf1 >\cf0\par
\cf4     \cf1 <\cf2 xhtml:div \cf3 id\cf4 =\cf5 "intalio-bpms-form"\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xhtml:div \cf3 id\cf4 =\cf5 "xforms_cntrl_lcombo2"\cf1 >\cf0\par
\cf4          \cf1 <\cf2 xforms:output \cf3 ref\cf4 =\cf5 "instance('taskinput')/fe:combo2_items/fe:item"\cf1 />\cf0\par
\cf4       \cf1 </\cf2 xhtml:div\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xhtml:div \cf3 id\cf4 =\cf5 "xforms_cntrl_lcombo1"\cf1 >\cf0\par
\cf4         \cf1 <\cf2 xforms:output \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:combo1"\cf1 />\cf0\par
\cf4       \cf1 </\cf2 xhtml:div\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xhtml:div \cf3 id\cf4 =\cf5 "xforms_cntrl_combo1"\cf1 >\cf0\par
\cf4\tab\tab       \cf1 <\cf2 xforms:select1 \cf3 appearance\cf4 =\cf5 "minimal" \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:combo1" \cf3 xxforms:refresh-items\cf4 =\cf5 "true"\cf1 >\cf0\par
\cf4\tab\tab         \cf1 <\cf2 xforms:label\cf1 >\cf4 combo1\cf1 </\cf2 xforms:label\cf1 >\cf0\par
\cf4\tab\tab         \cf1 <\cf2 xforms:itemset \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:combo1_items/fe:item"\cf1 >\cf0\par
\cf4\tab\tab           \cf1 <\cf2 xforms:label \cf3 ref\cf4 =\cf5 "fe:label"\cf1 />\cf0\par
\cf4\tab\tab           \cf1 <\cf2 xforms:value \cf3 ref\cf4 =\cf5 "@value"\cf1 />\cf0\par
\cf4\tab\tab         \cf1 </\cf2 xforms:itemset\cf1 >\cf0\par
\cf4\tab\tab       \cf1 </\cf2 xforms:select1\cf1 >\cf0\par
\cf4\tab   \cf1 </\cf2 xhtml:div\cf1 >\cf0\par
\cf4       \cf1 <\cf2 xhtml:div \cf3 id\cf4 =\cf5 "xforms_cntrl_combo2"\cf1 >\cf0\par
\cf4\tab         \cf1 <\cf2 xforms:select1 \cf3 appearance\cf4 =\cf5 "minimal" \cf3 ref\cf4 =\cf5 "instance('taskoutput')/fe:combo2" \cf3 xxforms:refresh-items\cf4 =\cf5 "true"\cf1 >\cf0\par
\cf4\tab           \cf1 <\cf2 xforms:label\cf1 >\cf4 combo2\cf1 </\cf2 xforms:label\cf1 >\cf0\par
\cf4\tab           \cf1 <\cf2 xforms:itemset \cf3 nodeset\cf4 =\cf5 "instance('taskinput')/fe:combo2_items/fe:item[@value = instance('instance')/instance('taskoutput')/fe:combo1]"\cf1 >\cf0\par
\cf4\tab             \cf1 <\cf2 xforms:label \cf3 ref\cf4 =\cf5 "fe:label"\cf1 />\cf0\par
\cf4\tab             \cf1 <\cf2 xforms:value \cf3 ref\cf4 =\cf5 "@value" \cf1 />\cf0\par
\cf4\tab           \cf1 </\cf2 xforms:itemset\cf1 >\cf0\par
\cf4\tab         \cf1 </\cf2 xforms:select1\cf1 >\cf0\par
\cf4\tab       \cf1 </\cf2 xhtml:div\cf1 >\cf0\par
\cf4     \cf1 </\cf2 xhtml:div\cf1 >\cf0\par
\cf4   \cf1 </\cf2 xhtml:body\cf1 >\cf0\par
\cf1 </\cf2 xhtml:html\cf1 >\cf0\par
\f2\par
}


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Mackinnon, Mark A. wrote

I think Djalma Saraiva may be seeking a response to a problem such as Alex solved for me here?  Hope this helps.
 
Mark MacKinnon

________________________________

From: ops-users-owner@ow2.org on behalf of Alexander Zatko
Sent: Tue 10/2/2007 1:57 AM
To: ops-users@ow2.org
Subject: Re: [ops-users] Problem getting two-tier select1 to work as desired



Mark,

I added code to your file that captures the change made in the drop-
down selection1 and sets the default value for selection2. That
results in the 1st model of the selected make to be displayed by the
output. Not sure if this completely solves your problem (...too lazy
to read the complete description :-)  )

Also note that I added <widget:xforms-instance-inspector
xmlns:widget="http://orbeon.org/oxf/xml/widget"/> to the end of the
page - this allows you to check what values any of the instances
contain.

A.

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
     xmlns:xf="http://www.w3.org/2002/xforms"
     xmlns:ev="http://www.w3.org/2001/xml-events"
     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns:widget="http://orbeon.org/oxf/xml/widget"
     xmlns:xxforms="http://orbeon.org/oxf/xml/xforms">
     <head>
         <title>Two Tier test</title>
         <xf:model>
             <xf:instance id="Main">
                 <Test xmlns="">
                     <VehicleMakeOne/>
                     <VehicleModelOne/>
                     <VehicleMakeTwo/>
                     <VehicleModelTwo/>
                 </Test>
             </xf:instance>
             <xf:instance id="VehicleMakes">
                 <VehicleMakeCodes xmlns="">
                     <Entry code="" name=""/>
                     <Entry code="AUDI" name="Audi"/>
                     <Entry code="BMW" name="BMW"/>
                     <Entry code="CHEV" name="Chevrolet"/>
                 </VehicleMakeCodes>
             </xf:instance>
             <xf:instance id="VehicleModelsSimple">
                 <VehicleModelCodes xmlns="">
                     <Entry make="" code="" model=""/>
                     <Entry make="AUDI" code="1st Audi Model"
model="1st Audi Model"/>
                     <Entry make="AUDI" code="2nd Audi Model"
model="2nd Audi Model"/>
                     <Entry make="AUDI" code="3rd Audi Model"
model="3rd Audi Model"/>
                     <Entry make="BMW" code="1st and Only BMW Model"
model="1st and Only BMW
                         Model"/>
                     <Entry make="CHEV" code="1st Chevy Model"
model="1st Chevy Model"/>
                     <Entry make="CHEV" code="2nd Chevy Model"
model="2nd Chevy Model"/>
                     <Entry make="CHEV" code="3rd Chevy Model"
model="3rd Chevy Model"/>
                     <Entry make="CHEV" code="4th Chevy Model"
model="4th Chevy Model"/>
                 </VehicleModelCodes>
             </xf:instance>
             <xf:instance id="VehicleModelsExpanded">
                 <VehicleModelCodes xmlns="">
                     <Entry make="" code="" model=""/>
                     <Entry make="AUDI" code="" model="Choose from
list"/>
                     <Entry make="AUDI" code="1st Audi Model"
model="1st Audi Model"/>
                     <Entry make="AUDI" code="2nd Audi Model"
model="2nd Audi Model"/>
                     <Entry make="AUDI" code="3rd Audi Model"
model="3rd Audi Model"/>
                     <Entry make="BMW" code="" model="Choose from
list"/>
                     <Entry make="BMW" code="1st and Only BMW Model"
model="1st and Only BMW
                         Model"/>
                     <Entry make="CHEV" code="" model="Choose from
list"/>
                     <Entry make="CHEV" code="1st Chevy Model"
model="1st Chevy Model"/>
                     <Entry make="CHEV" code="2nd Chevy Model"
model="2nd Chevy Model"/>
                     <Entry make="CHEV" code="3rd Chevy Model"
model="3rd Chevy Model"/>
                     <Entry make="CHEV" code="4th Chevy Model"
model="4th Chevy Model"/>
                 </VehicleModelCodes>
             </xf:instance>
             <xf:submission id="submit-test" method="post" ref="/Test"
                 action="http://www.xformstest.org/cgi-bin/echo.sh" />
         </xf:model>
     </head>
     <body>
         <fieldset>
             <legend>Problem One</legend>
             <xf:select1 ref="VehicleMakeOne">
                 <xf:label>Make: </xf:label>
                 <xf:itemset nodeset="instance('VehicleMakes')/Entry">
                     <xf:label ref="@name"/>
                     <xf:value ref="@code"/>
                 </xf:itemset>
                 <xf:action ev:event="xforms-value-changed">
                     <xf:setvalue ref="../VehicleModelOne"
value="instance('VehicleModelsSimple')/Entry[@make=instance('Main')/
VehicleMakeOne]/@model"/>
                 </xf:action>
             </xf:select1>
             <xf:select1 ref="VehicleModelOne">
                 <xf:label>Model: </xf:label>
                 <xf:itemset nodeset="instance('VehicleModelsSimple')/
Entry[@make =
                     instance('Main')/VehicleMakeOne]">
                     <xf:label ref="@model"/>
                     <xf:value ref="@code"/>
                 </xf:itemset>
             </xf:select1>
             <xf:output ref="VehicleModelOne">
                 <xf:label>What gets stored in instance: </xf:label>
             </xf:output>
         </fieldset>
         <fieldset>
             <legend>Problem Two</legend>
             <xf:select1 ref="VehicleMakeTwo">
                 <xf:label>Make: </xf:label>
                 <xf:itemset nodeset="instance('VehicleMakes')/Entry">
                     <xf:label ref="@name"/>
                     <xf:value ref="@code"/>
                 </xf:itemset>
             </xf:select1>
             <xf:select1 ref="VehicleModelTwo">
                 <xf:label>Model: </xf:label>
                 <xf:itemset nodeset="instance
('VehicleModelsExpanded')/Entry[@make =
                     instance('Main')/VehicleMakeTwo]">
                     <xf:label ref="@model"/>
                     <xf:value ref="@code"/>
                 </xf:itemset>
             </xf:select1>
             <xf:output ref="VehicleModelTwo">
                 <xf:label>What gets stored in instance: </xf:label>
             </xf:output>
         </fieldset>
         <P>
             <xf:submit submission="submit-test">
                 <xf:label>Submit the Form</xf:label>
             </xf:submit>
         </P>
         <widget:xforms-instance-inspector xmlns:widget="http:// <http:///> 
orbeon.org/oxf/xml/widget"/>
     </body>
</html>



On Oct 2, 2007, at 12:47 AM, Mark MacKinnon wrote:

> Hi, all
>
> I'm developing some forms that have a number of instances where the
> selections
> available in one dropdown list (xforms:select1) are dependant on
> the selection
> in a previous dropdown.  I'm attaching a simple example where the
> first select1
> is a list of car makes and the second select1 is a list of models
> dependant on
> the make selected.
>
> I have a simple main instance that holds the VehicleMake and
> VehicleModel
> fields.  There is an instance that holds the VehicleMake enumerated
> values, and
> two instances of VehicleModel enumerations (I've made two attempts
> at this -
> both shown - but neither works as I hoped).
>
> In the first example, the desired value(s) is displayed in the 2nd
> dropdown; it
> appears, however, that no "onChange" event fires, because the
> xforms:output
> control that references the VehicleModel field of the main instance
> remains
> blank until I select something other than the first entry in the
> list. If I
> want to choose the first model, I must select the 2nd or higher
> model, then
> return to the first model.  In the case where the vehicle make is
> "BMW" (which
> only has one model), it is impossible to get the onChange event to
> fire.
>
> As a "quick and dirty" fix, I tried adding a neutral model choice
> to the top of
> the section for each make.  The value would be blank, and the text
> displayed to
> the user would be "Choose from list", prompting them to move off
> this neutral
> entry to an appropriate one, thus firing the event.  This should
> work even for
> BMW.
>
> The real issue is, I'm actually creating numerous vehicle make/
> model entries,
> and the new problem is, once I've chosen the 2nd, 3rd, 1st ...
> entry in the
> model list for one make, when I select a different make, the model
> list is
> already pointing to that index, rather than index one which says
> "Choose from
> list".        You can see this by selecting the 2nd Audi model, than
> changing the
> make to Chevrolet, or choose the 3rd Chevy model, then change the
> make to Audi.
>  Or choose the first Audi model, then change the make to BMW
> (apparently, if
> you choose the 2nd or higher Audi or Chevy, then choose BMW, you
> *do* get the
> "Choose from list" (1st) entry because the previous index exceeds
> the number of
> BMW entries).
>
> I'd appreciate any suggestions; it seems multi-tiered dropdowns
> would be a
> common issue.  I'd really like to find a solution that doesn't require
> interleaving dummy entries with the real data, especially since the
> real
> enumerations I'm working with have hundreds and even thousands of
> entries.
>
> Thanks in advance,
> Mark MacKinnon
>
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Desculpe Rich pela confusão.
Obrigado pela ajuda, amigo.

Até logo.

Djalma Saraiva
[hidden email]
Tel +55 51 2117 1872 | +55 11 3717 5271

www.projeler.com.br


----- Original Message ----- From: "Richard C. Hidalgo Lorite" [hidden email]
To: [hidden email]
Cc: [hidden email]
Sent: Friday, January 18, 2008 4:54 PM
Subject: Re: [ops-users] Get the value of dynamic combobox


On Fri, 18 Jan 2008 11:10:26 -0200
"Djalma Saraiva - PROJELER" [hidden email] wrote:

Hi Alex,

I'm not Alex but Rich, no sou o Alex, sou o rich

até logo

rich



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