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my two related select binding failed

Posted on 2009-05-13
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395 Views
Last Modified: 2013-12-20
hi i have a coldfusion code in which the binding is failing and the value is not being retrived from database, i really do not know why?

first of all i will tell my table structutre

id, state, city in table zips

now i use the following code to bind the expression:

<tr><td><strong>State</strong></td>
      <td><select name="state" class="textfield_effect">
            <cfoutput query="getData">
              <option value="#sstate#">#sstate#</option>
        </cfoutput>
      </select>&nbsp;
      <cfselect name="city" bindOnLoad="yes" bind="cfc:cfc.statecity.CitySelect({State})"/>  
      </td>
      </tr>

now the cfcfunction is in below window:

i invoke the getdata as:

<cfinvoke component="#request.cfcPath#.tools" method="gData" newf="1" returnvariable="getData"/>

what in getdata is as:

 <cffunction access="public" name="gData" returntype="query">
          <cfargument name="newf" default="" required="no">
          <cfset var myset = "">
        <cfquery name="myset" datasource="#request.dsn#">
        <cfif isdefined('arguments.newf') and arguments.newf eq 1>
             SELECT DISTINCT(state) as sstate
        from zips
        GROUP by state
        <cfelse>
        SELECT * from zips
        </cfif>
        </cfquery>
        <cfreturn myset>
    </cffunction>
   

<cfcomponent>
<cfproperty name="name" type="string">
<cffunction name="CitySelect" access="remote" returntype="array">
  <cfargument name="State" type="string" required="true">
  <cfquery name="myset" datasource="#request.dsn#" username="#request.user#" password="#request.pass#">
	SELECT city,state 
    FROM zips 
    WHERE State = <cfqueryparam cfsqltype="cf_sql_varchar" value="#state#">
  </cfquery>
  <cfset list = arraynew(2)>
  <!--- Convert results to array --->
  <cfloop index="i" from="1" to="#myset.RecordCount#">
    <cfset list[i][1]= myquery.state[i]>
    <cfset list[i][2]= myquery.city[i]>
  </cfloop>
  <cfreturn list>
</cffunction>
</cfcomponent>

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9 Comments
 
LVL 27

Expert Comment

by:azadisaryev
ID: 24381771
you are terminating your <cfselect> tag by using an empty tag closing tag ( /> ) in it - that prevents any <option> tags to be added to this <cfselect> by the bnding.

you need to properly close your <cfselect> tag by using a closing tag instead of terminating it. change your <cfselect> to this:

<cfselect name="city" bindOnLoad="yes" bind="cfc:cfc.statecity.CitySelect({State})"></cfselect>

Azadi
0
 
LVL 16

Author Comment

by:Gurpreet Singh Randhawa
ID: 24381783
changing that as you suggested still not solved my issue. i get this error:


<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
error:bind: Element not found: State
 
error:bind: Bind failed, element not found: State

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Expert Comment

by:azadisaryev
ID: 24382320
javascript IS case-sensitive. if your <select> has name="state" (lowercase first letter), then you need to bind to {state}, NOT {State}.

plus, you should probably add ID="sate" attribute to your <select name="state">, because, iirc, cf's js that works behind the binding uses getElementById() js function...

Azadi
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LVL 16

Author Comment

by:Gurpreet Singh Randhawa
ID: 24382513
i changed, i added the element ID in state select

i get this error:
<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
error:http: Error invoking CFC /ibestcity/corecontrol/cfc/statecity.cfc : Element STATE is undefined in a Java object of type class [Ljava.lang.String;.

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Author Comment

by:Gurpreet Singh Randhawa
ID: 24383511
Dude, I changed a bit of code in the CFC to make it a simple query. the query i changed is below:

it showed me this error:


<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
error:bind: Bind failed for select box city, value and/or display attributes must be specified on the cfselect tag when binding to a query
 
Now the cfc function i changed.
 
<cfcomponent>
<cfproperty name="name" type="string">
<cffunction name="CitySelect" access="remote" returntype="query">
  <cfargument name="state" type="string" required="true">
  <cfquery name="myset" datasource="#request.dsn#" username="#request.user#" password="#request.pass#">
	SELECT *
    FROM zips 
    WHERE state = <cfqueryparam cfsqltype="cf_sql_varchar" value="#state#">
  </cfquery>
  <cfreturn myset>
</cffunction>
</cfcomponent>
 
 
iopened firebug to see what is happening, i got the following stuff.:
 
 {"COLUMNS":["FIPS","ZIPCODE","STATE","PLACE"],"DATA":[[1,143001.0,"Punjab","Amritsar"],[2,144001.0
,"Punjab","Jalandhar"]]}
  
can u guide me what is happening and what i do now

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Author Comment

by:Gurpreet Singh Randhawa
ID: 24383514
ignore this : = <input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">

0
 
LVL 16

Author Comment

by:Gurpreet Singh Randhawa
ID: 24385759
can anybody tell me how i do this, my project is stucked due to this, please experts<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
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Accepted Solution

by:
azadisaryev earned 500 total points
ID: 24385812
do as the error says: add DISPLAY and VALUE attributes to your <cfselect> tag!

<cfselect name="city" bindOnLoad="yes" bind="cfc:cfc.statecity.CitySelect({state})" DISPLAY="place" VALUE="place"></cfselect>

Azadi
0
 
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Author Closing Comment

by:Gurpreet Singh Randhawa
ID: 31581100
Thanks Azadi
0

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