Question

passing variables to iFrame

Asked by: BCPower

This javascript opens up a centerd window:

function openWin(){
var imgwid = 400;
var imghgt = 250;

var winl = (screen.width - imgwid) / 2;
var wint = (screen.height - imghgt) / 2;

var Errors = window.open('','Errors','width=' + imgwid + ',height=' + imghgt + ',top=' + wint + ',left=' + winl+',resizable=0,scrollbars=0');
}

In this window I have a page called 001_VALIDATE.cfm.  This page also hase an iFrame who's source is Error_details.cfm.    Currently, 001_VALIDATE.cfm get's all the variables and Error_details.cfm errors.  I need Error_details.cfm to get the variables passed from the form so that it doesn't error.

Here's the other important objects:

Form page:
----------------------------
<form name="myForm" method="post" target="Errors" action="001_VALIDATE.cfm">
<input name="Button" type="button" class="Button_NEXT" value="Next" onClick="openWin();this.form.submit()">

001.VALIDATE.cfm
----------------------------
<iframe id="Details" name="Details" frameborder="1" width="350" height="160" src="Error_detail.cfm"></iframe>

Error_details.cfm
----------------------------
<cfoutput>#FORM.Q01A#</cfoutput>
<cfoutput>#FORM.Q02A#</cfoutput>

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Asked On
2004-07-14 at 10:56:35ID21058774
Tags

iframe

,

variables

,

passing

Topic

ColdFusion Application Server

Participating Experts
5
Points
0
Comments
18

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Answers

 

by: campbelcPosted on 2004-07-14 at 11:51:44ID: 11552329

Is this on a site where I can see it in action?

 

by: a1programmerPosted on 2004-07-14 at 11:54:08ID: 11552361

Hi,
   Would you care to explain exactly what you are trying to do with this method?


The only way that you can get the variables to the error_details.cfm would be to send them through the query string when you build the iframe in 001_validate.cfm.

in 001.VALIDATE.cfm

<!--- here's a snippet that will retrieve all the submitted fields and query string data --->

                <cfparam name="fieldnames" default="">
                <cfparam name="query_string" default="">

      <cfset urlparams = "">
      
      <cfloop list=#fieldnames# index=key delimiters=",">

            <cfset urlparams =  urlparams & "&#key#=" & #evaluate("form." & key)#>
      </cfloop>

      <cfloop list="#query_string#" index=key delimiters="?,&">      
            <cfset urlparams =  urlparams & "&" & key>
      </cfloop>

<!--- end of snippet --->



<iframe id="Details" name="Details" frameborder="1" width="350" height="160"

src="Error_detail.cfm?urlparams"></iframe>   <!--- notice what I've added here --->

 

by: Jester_48Posted on 2004-07-14 at 11:59:13ID: 11552431

add teh form variables to the url in the iframe and change teh errors.cfm to accept url variables

<iframe id="Details" name="Details" frameborder="1" width="350" height="160" src="Error_detail.cfm?<cfloop index="idx" List="#Form.Fieldnames#">#idx#=#evaluate(idx)#&</cfloop>"></iframe>

Error_details.cfm
----------------------------
<cfoutput>#url.Q01A#</cfoutput>
<cfoutput>#url.Q02A#</cfoutput>

 

by: Jester_48Posted on 2004-07-14 at 12:03:13ID: 11552483

sorry a1, stale window, didn't refresh before posting

 

by: BCPowerPosted on 2004-07-14 at 12:03:55ID: 11552487

but isn't there a max limit of 256 characters on the URL?  I have more than that.

 

by: shooksmPosted on 2004-07-14 at 12:08:55ID: 11552541

1024 is the limit.

 

by: a1programmerPosted on 2004-07-14 at 12:43:09ID: 11552929

no problem, jester_48.  Happens to me all the time. :-/

-----------------------------

Why not do something like this.

When the form is submitted, the action page is Error_detail.cfm. Error_detail.cfm loads in a pop up window, (while the form stays open in the back ground).  

If there are errors, the popup window informs the user, and they can close the window, fix them, and try again.  

When there are no errors, the pop_up window will change the action of the form on the parent document: opener.document.form1.action = "..."; and then submit it to the other page opener.document.form1.submit();

--------------------------------

Seems like you are trying to do something similar, but I can't figure out why you have the validation and error checking in 2 seperate cf files...

 

by: BCPowerPosted on 2004-07-14 at 13:46:14ID: 11553544

Well, that's sort of what I want to do.  However, the reason for my question is purely for aesthetic purposes.

I have a large number of form variables that the user must input.  If they forget a couple, a window pops up telling them which questions they need to correct.  I wanted to use an iFrame so that I could make the list of errors (which could be long) scrollable within an "Alert" style window that is 400pix X 250pix in size.

 

by: BCPowerPosted on 2004-07-14 at 13:48:08ID: 11553556

One other thing I forgot to mention:

The Alert window says ALERT: You missed some questions.  See below for details.

Underneath that, I wanted the iFrame so they could scroll through the list as they go back and correct their errors.

 

by: BCPowerPosted on 2004-07-15 at 06:26:04ID: 11558807

So is the URL the only way to do this?  Can't I store the variables in an array and then somehow pass them to the iFrame?

 

by: a1programmerPosted on 2004-07-15 at 06:44:24ID: 11558957

Why not leave it out of the iframe?  They can still scroll the contents of the popup window.  

You could use some javascript in 001_VALIDATE.cfm and write the html that goes into the iframe... rather than making it a seperate cf page.

in 001_VALIDATE.cfm

document.getElementById("Details").document.write ('<html><body>');

<cfif not isDefined(something)>
     document.getElementById("Details").document.write ("You forgot to enter something.<br>");
</cfif>

 

by: a1programmerPosted on 2004-07-15 at 06:44:57ID: 11558965

If you want to keep the IFrame, that is.

 

by: BCPowerPosted on 2004-07-15 at 07:30:49ID: 11559412

Problem solved.

For those who are interested, here's what worked:

<!--- Data Storage Array --->
<form name="Storage" method="post" target="Details" action="Error_detail.cfm">
<cfset aryData = arrayNew(2)>
<cfloop index="formfields" list="#form.fieldnames#" delimiters=",">
<CFSET aryData[1][1] = #formfields#>
<CFSET aryData[1][2] = #Evaluate("#formfields#")#>
<cfoutput><input type="hidden" name="#aryData[1][1]#" value="#aryData[1][2]#"></cfoutput>
</cfloop>
<!--- END Data Storage Array --->

<body onLoad='document.forms[0].submit();'>
<iframe id="Details" name="Details" frameborder="1" width="350" height="160" src=""></iframe>

 

by: a1programmerPosted on 2004-07-15 at 07:34:30ID: 11559445

Looks good,
  You don't need the array though.

<cfloop index="formfields" list="#form.fieldnames#" delimiters=",">
     <input type="hidden" name=#formfields# value="#Evaluate("#formfields#")#">
</cfloop>

 

by: BCPowerPosted on 2004-07-15 at 07:35:16ID: 11559452

Good point but don't arrays run faster?

 

by: a1programmerPosted on 2004-07-15 at 07:53:17ID: 11559634

Not like that.

You copied the data into an array from the formfield, then immediately retrieved the data to output onto the form.

When you could have just put the list values on the form directly, as in my example.

 

by: NetminderPosted on 2004-07-19 at 15:33:26ID: 11588069

Closed, 500 points refunded.
Netminder
Site Admin

20120131-EE-VQP-002

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