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RE: Dropdown

2002-10-22 12:16:10
[Juan Carlos Gonzalez]

This is my template. I'm trying to generate input tags
based on the type read from the xml file.


Just guessing at the xml file you want to transform, I do not think that
your stylesheet would quite do what you want even if you could have
gotten away with the ill-formed construction.  Of course, I do not know
whether all the options would be listed in order with no other  inputs
mixed in.

I take it that you will have a list of elements whose Type attribute is
"dropdown", whose name is to be the name of the select element, and
whose Val atribute is to become the value of an option.  There should be
just one select element for such a group of options, and you want to
output it when you encounter the first element with a new name.  Right?

It would be better if you could change your xml format to have all the
options contained in a container element.  Then things would be easier.
Then, for each container you would create a select element.  Can you do
change the format?

Otherwise, you could proceed like this (a brute force approach that
makes minimal changes to what you already had) - depending, of course,
on what is really in the xml file:


<xsl:template match="csd">
  <xsl:for-each select="sd[count(. | key('specs_key', @Name)[1])=1]">
  <xsl:if test="@Type = 'DropDown'"> 
    <select name="Name">
     <option value="-">--Select Name--</option>
             <xsl:for-each select="key('specs_key', @Name)[(_at_)Type =
'DropDown']">
            <option value='{(_at_)Val}'><xsl:value-of
select="@Val"/></option>
        </xsl:for-each>
      </select>
  </xsl:if> 

  <xsl:for-each select="key('specs_key', @Name)[not(@Type
='DropDown')]">
    <xsl:choose>
      <xsl:when test="@Type = 'DropDown'"> 
      </xsl:when>
      <xsl:when test="@Type = 'CheckBox'"> 
         <xsl:element name="input">
      <xsl:attribute name="type">checkbox</xsl:attribute>
      <xsl:attribute name="id"><xsl:value-of 
select="@DetailId"/></xsl:attribute>
      </xsl:element>
      </xsl:when>
      <xsl:when test="@Type = 'Radio'"> 
      <xsl:element name="input">
      <xsl:attribute name="type">radio</xsl:attribute>
      <xsl:attribute name="id"><xsl:value-of 
select="@DetailId"/></xsl:attribute>
      <xsl:value-of select="@Val"/>&#160;
      </xsl:element>
      </xsl:when>
      <xsl:when test="@Type = 'Free Form Text'"> 
      <xsl:value-of select="@Val"/>
      </xsl:when>
      </xsl:choose>
   </xsl:for-each>
</xsl:for-each>
</xsl:template>



--- "Passin, Tom" <tpassin(_at_)mitretek(_dot_)org> wrote:
[ Juan Carlos Gonzalez]

I'm trying to create a drop down list box
dynamically,
but I'm getting an error message cause the
"select"
tag is not being closed within the "if" tag. I
have
tried replacing the < and > sign with the &lt; and
&gt; but it's still not working. Any ideas?

<xsl:if test="some condition">
  <select name="cat">
</xsl:if>

...the folowing template will create the options
tag
amoung other things ...

<xsl:apply-templates select="cat"/>

<xsl:if test="some condition">
  </select>
</xsl:if>

You must complete and close the select element
within the xsl:if
element. Remember that the stylesheet has to be
well-formed xml.   If
you think that you need to do something else, you
have not understood
your problem thoroughly enough yet.  If you explain
what you really wish
to accomplish, we will be able to help you with it.

For example, if you want to create a select element,
then you surely
will want to create options inside it.  If you want
to create the select
list only if there are any cat elements, and have
one option per cat,
then you could write (assuming that the "cat"
element contains the name
of the cat as character data)

<xsl:if test='cat'> <!-- executed if there are any
"cat" child elements
-->
    <select name='cat'>
            <xsl:for-each select='cat'>
                    <option value='{.}'><xsl:value-of
select='.'/></option>
            </xsl:for-each>
    </select>
</xsl:if>

If you specify an xsl:output method of 'html', the
output will be in
ordinary html (rather than in xml), and the options
will come out
looking like normal html options:

<option value='Mary'>Mary

You could also use apply-templates instead of the
for-each, which might
be better if you have more complex processing to do
in constructing the
options.  In this case, you would build the options
in the template for
"cat" rather than as shown here.

Cheers,

Tom P

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