Dynamic form taking a long time to generate

Question

Hi all, I have a <cfoutput query="blah"> wrapped around a <cfform> which can retireve anything upto 200 rows from the datatbase... My problem is if I retrieve anything more than 30ish rows then my page takes ages to compile and will hang.  Can you guys take a look at my code and see if it can be improved or if I am doing anything wrong please ?  I inherited this code from the previous developer...
Many Thanks,
G
<!--- update previous address --->
<cfif isdefined("btnUpdAddr")>
<cfmodule name="updPrevAddr" address1="#form["address1#addrCount#"]#" address2="#form["address2#addrCount#"]#"
  town="#form["town#addrCount#"]#" county="#form["county#addrCount#"]#" postcode="#form["postcode#addrCount#"]#"
  residentfrom="#form["ataddrsince#addrCount#"]#" residentto="#form["ataddrto#addrCount#"]#"
  country="#form["country#addrCount#"]#" previousaddrid="#form.addrid#" applicationid="#form.appid#">
</cfif>
<!--- loop round and get addressess --->
<cfoutput query="getPreviousAddresses">
   <cfform name="fmAddr#addrCount#" action="previousaddresses.cfm" class="css_fm1" onSubmit="return FormAddrValidate('#addrCount#')">
    <fieldset>
    <legend>Address #addrCount#</legend>
    <p><label for="address1#addrCount#" class="txtlabel"><span class="reqd">*</span> Address line 1</label>
    <cfinput id="address1#addrCount#" name="address1#addrCount#" type="text" class="txt" title="Previous address" value="#address1#" required="Yes" validate="regex" pattern="(^[A-Z0-9\(\)\-/'&]+$)|(^[A-Z0-9\(\)\-/'&][A-Z 0-9\(\)\-/'&]*[A-Z0-9\(\)\-/'&]$)" message="Please enter a valid Address line 1." maxlength="60" onChange="javascript:this.value=this.value.toUpperCase();trim(this);" /></p>
    <p><label for="address2#addrCount#" class="txtlabel">Address line 2</label>
    <cfinput id="address2#addrCount#" name="address2#addrCount#" type="text" class="txt" title="Previous address" value="#address2#" validate="regex" pattern="(^[A-Z0-9\(\)\-/'&]+$)|(^[A-Z0-9\(\)\-/'&][A-Z 0-9\(\)\-/'&]*[A-Z0-9\(\)\-/'&]$)" message="Please enter a valid Address line 2." maxlength="60" onChange="javascript:this.value=this.value.toUpperCase();trim(this);" /></p>
    <p><label for="town#addrCount#" class="txtlabel"><span class="reqd">*</span> Town</label>
    <cfinput id="town#addrCount#" name="town#addrCount#" type="text" class="txt" title="Previous town" value="#town#" required="Yes" validate="regex" pattern="(^[A-Z0-9\(\)\-/'&]+$)|(^[A-Z0-9\(\)\-/'&][A-Z 0-9\(\)\-/'&]*[A-Z0-9\(\)\-/'&]$)" message="Please enter a valid Town." maxlength="30" onChange="javascript:this.value=this.value.toUpperCase();trim(this);" /></p>
    <p><label for="county#addrCount#" class="txtlabel">County</label>
    <cfinput id="county#addrCount#" name="county#addrCount#" type="text" class="txt" title="Previous county" value="#county#" required="No" validate="regex" pattern="(^[A-Z0-9\(\)\-/'&]+$)|(^[A-Z0-9\(\)\-/'&][A-Z 0-9\(\)\-/'&]*[A-Z0-9\(\)\-/'&]$)" message="Please enter a valid County." maxlength="30" onChange="javascript:this.value=this.value.toUpperCase();trim(this);" /></p>
    <!--- COUNTRY --->    
    <p><label for="country#addrCount#" class="txtlabel"><span class="reqd">*</span> Country</label>
    <cfmodule name="hccpass.getISOCountries" queryname="getISOCountries">
    <cfselect id="country#addrCount#" name="country#addrCount#" title="Previous country" query="getISOCountries" display="country" value="code" size="1" selected="#countryiso#" message="Please select a Country." required="Yes">
     <cfif countryiso eq "">
      <option value="0" selected></option>
     </cfif>
    </cfselect></p>
    <p><label for="postcode#addrCount#" class="txtlabel">Postcode</label>
    <cfinput id="postcode#addrCount#" name="postcode#addrCount#" type="text" title="Previous postcode" value="#postcode#" maxlength="30" size="30" message="Please enter a valid Postcode." onChange="javascript:this.value=this.value.toUpperCase();trim(this);" /></p>
    <p><label for="ataddrsince#addrCount#" class="txtlabel"><span class="reqd">*</span> At address from</label>
    <cfinput id="ataddrsince#addrCount#" name="ataddrsince#addrCount#" type="text" title="At address from date mm/yyyy" value="#residentfrom#" maxlength="7" size="7" mask="99/9999" required="Yes" validate="regex" pattern="^(0[1-9]|1[012])\/(19|20)\d\d$" message="Please enter a valid At address from (mm/yyyy)." />
    <div class="checkbox_label">  <span class="reqd">*</span> to  </div>
    <cfinput id="ataddrto#addrCount#" name="ataddrto#addrCount#" type="text" title="At address to date mm/yyyy" value="#residentto#" maxlength="7" size="7" mask="99/9999" required="Yes" validate="regex" pattern="^(0[1-9]|1[012])\/(19|20)\d\d$" message="Please enter a valid At address to (mm/yyyy)." /></p>
    <!--- hidden values for update --->
    <input type="hidden" name="addrCount" value="#addrCount#">
    <input type="hidden" name="appid" value="#appid#">
    <input type="hidden" name="applicantid" value="#applicantid#">
    <input type="hidden" name="addrid" value="#previousaddressesid#">
    <!--- no update option for read only user --->
    <cfif session.roleID neq 3 and tAllowAmend neq "N">
     <p><input type="submit" name="btnUpdAddr" class="fmbutton" title="Save this address" value="Save address" />
     <input type="button" name="btnDeleteAddr" class="fmbutton" title="Delete address" value="Delete" onclick="javascript: if (confirm('You are about delete a previous address. Click OK to continue.')) location='previousaddresses.cfm?appid=#appid#&applicantid=#applicantid#&prevaddrid=#previ ousaddressesid#'"/>
     <input type="reset" name="btnreset" class="fmbutton" title="Reset" /></p>
    </cfif>
    </fieldset>
    <cfset addrCount = addrCount+1> 
   </cfform>
</cfoutput>

Answer 1

Well the first thing that jumps out at me is that you're making a new form for every row in the query -- and since you're using cfform you're generating a whole heck of a lot of script (generated by using cfform) so I can see that slowing things down.
I think this is something better suited for a table which displays the records and links to an 'edit' page for an individual record instead of creating 200+ forms on one page.