Troublesome coldfusion union query in CFC with mySQL database

Question

This works with a mySQL backend

In the form...

   <cfselect name="to" size="1" bind="cfc:cfcs.messages.getOrganisations()" bindonload="yes" value="organisationID" display="organisationName" required="Yes">
     </cfselect>

in the cfc

<cffunction access="remote" name="getOrganisations" output="false" returntype="query" displayname="Get organisations list" hint="This method returns a list of organisations as a query.">
    <cfquery name="getOrganisations" datasource='myData'>

    SELECT organisationID, organisationName, acceptsReferral, metadataTemplate
    FROM organisations
    WHERE acceptsReferral
    ORDER BY organisationName ASC;

    </cfquery>
    <cfreturn getOrganisations>
</cffunction>

but if I try

<cffunction access="remote" name="getOrganisations" output="false" returntype="query" displayname="Get organisations list" hint="This method returns a list of organisations as a query.">
    <cfquery name="getOrganisations" datasource='myData'>
    SELECT '0' AS organisationID, 'Select' AS organisationName, false AS acceptsReferral, 0 AS metadataTemplate
    FROM organisations
    UNION
    (SELECT organisationID, organisationName, acceptsReferral, metadataTemplate
    FROM organisations
    WHERE acceptsReferral
    ORDER BY organisationName ASC)

    </cfquery>
    <cfreturn getOrganisations>
</cffunction>

to try and get a select leading row to the query, I get this AJAX error in firebug " JSON serialization failure: Unable to serialize binary data to JSON."

Henry's suggestion resolved the above, but I'm again slightly foxed by the next bit , trying to get two selects linked.

This works...

<cfselect name="attentionOf" size="1" bind="cfc:cfcs.messages.getOrganisationMembers({to})" bindonload="false" value="userID" display="name" required="No" queryPosition="below">
<option value="0">Select</option>
</cfselect>

...but if i try to pass in the DSN with the bound field I get "error parsing bind" from this

<cfselect name="attentionOf" size="1" bind="cfc:cfcs.messages.getOrganisationMembers({to}, 'mySqlData')" bindonload="false" value="userID" display="name" required="No" queryPosition="below">
    <option value="0">Select</option>
</cfselect> 

Answer 1

Oh, I guess this is what you want.

<cfset organisations = createObject("component", "cfcs.messages").getOrganisations()>

<cfselect name="to" query="organisations" 
          value="organisationID" display="organisationName"
          required="Yes" queryPosition="below">
    <option value="0">Select</option>
</cfselect>

If you really need it to work with bind, try if the queryPosition attribute works. If queryPosition doesn't work with bind, then u need to insert the extra dummy row. It might be easier to use union with Query of Queries.