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A
akaBobo
Participating Frequently
June 8, 2012
Answered

Option value with cfselect in CF10

  • June 8, 2012
  • 1 reply
  • 1092 views

Has anyone gotten <option> values to work with cfselet in CF10?

This example:

<cfform name="mycfform">

    <!--- 

        The States selector. 

        The bindonload attribute is required to fill the selector. 

    --->

    <cfselect name="state" bind="cfc:bindFcns.getstates()" bindonload="true">

        <option name="0">--state--</option>

    </cfselect>

    <cfselect name="city" bind="cfc:bindFcns.getcities({state})">

        <option name="0">--city--</option>

    </cfselect>

</cfform>

When adding the option value, it doesn't show up in CF10.

    This topic has been closed for replies.
    Correct answer BKBK

    By design, ColdFusion's binding apparatus actually takes over the task of populating the list of options. Your option tag does not come in through the bind. Hence, as far as binding is concerned, your option tag does not exist.

    The solution is to include the first option, for example, '--state--', in the return value of the bind. That is precisely what is done in the Coldfusion documentation. See the example bindFcns.cfc in the documentation on cfselect. There you will find:

    <cffunction name="getstates" access="remote">

    <!--- I added the var--->

    <cfset var state = arraynew(2)>

    <cfset var xmlData = getXmlData()>

    <cfset var numStates = 0>

    <cfset state[1][1] = "0">

    <cfset state[1][2] = "--state--">

    <cfset numStates = ArrayLen(xmlData.states.XmlChildren)>

    <cfloop from="1" to="#numStates#" index="j">

        <cfset state[j+1][1] =

            ltrim(xmlData.states.state.XmlAttributes.abr)>

        <cfset state[j+1][2] = ltrim(xmlData.states.state.name.xmlText)>

    </cfloop>

    <cfreturn state>

    </cffunction>

    1 reply

    BKBK
    Community Expert
    BKBKCommunity ExpertCorrect answer
    Community Expert
    June 9, 2012

    By design, ColdFusion's binding apparatus actually takes over the task of populating the list of options. Your option tag does not come in through the bind. Hence, as far as binding is concerned, your option tag does not exist.

    The solution is to include the first option, for example, '--state--', in the return value of the bind. That is precisely what is done in the Coldfusion documentation. See the example bindFcns.cfc in the documentation on cfselect. There you will find:

    <cffunction name="getstates" access="remote">

    <!--- I added the var--->

    <cfset var state = arraynew(2)>

    <cfset var xmlData = getXmlData()>

    <cfset var numStates = 0>

    <cfset state[1][1] = "0">

    <cfset state[1][2] = "--state--">

    <cfset numStates = ArrayLen(xmlData.states.XmlChildren)>

    <cfloop from="1" to="#numStates#" index="j">

        <cfset state[j+1][1] =

            ltrim(xmlData.states.state.XmlAttributes.abr)>

        <cfset state[j+1][2] = ltrim(xmlData.states.state.name.xmlText)>

    </cfloop>

    <cfreturn state>

    </cffunction>

    A
    akaBoboAuthor
    Participating Frequently
    June 9, 2012

    Ok, thanks.  It appears that the livedocs just need some editing as that is where I pulled that example from:

    http://livedocs.adobe.com/coldfusion/8/htmldocs/help.html?content=Tags_r-s_14.html

    Granted, it is CF8/CF9, but I tried this method on CF8 and it didn't work either.

    I went ahead and created a union in query to add the rows, which is probably the better solution anyway.

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