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  • Garrett Fisher 341 posts 496 karma points
    Sep 22, 2009 @ 17:33
    Garrett Fisher
    0

    Null Check on <umbraco:Item> tag?

    Hi,

    I need to do something equivalent to a null check in a template, for example only write an image to a page if there IS an image associated with it.  How is this done in Umbraco?  My code is below:


    <img src="<umbraco:Item field='articlePhoto' runat='server'></umbraco:Item>" style="width:260px;float:left; padding:12px 10px 10px 0px;" />

     

    Thanks,

    Garrett

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  • dandrayne 1138 posts 2262 karma points
    Sep 22, 2009 @ 17:39
    dandrayne
    0

    You can either

    1. Insert the <img src=" and style="whatever:bleh" /> before and after the field when inserting the field in the template - heres an example from my own project
      <umbraco:Item field="pageSideBarTitle" insertTextBefore="&lt;h2&gt;" insertTextAfter="&lt;/h2&gt;" runat="server"></umbraco:Item>
    2. use xslt and wrap
      <xsl:if test="string($currentPage/data [@alias='articlePhoto') != ''"> </xsl:if> around the call to the image

    Using both ways, the image tag will only be written if the field isnt empty

    Dan ;-)

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  • dandrayne 1138 posts 2262 karma points
    Sep 22, 2009 @ 17:40
    dandrayne
    1

    Should note that the "insertTextBefore" etc needs to be escaped, but if you do it via the "insert page field" dialogue box this is done automatically.

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