Question

passing url variable by submitting a form

Asked by: bradderick

Hi All,

Think my brain might be a bit fried but is there an easy way to add on a url variable (ie searchresults.cfm?variable=1) when you want to submit a form to itself or do you have to pass through a processing page that cflocation's you back to the form you are submitting.

I know about <form name="searchrefine" action="#cgi.script_name#?variable=1" method="post">

but i want to pass values that the user is inputting inside the form so we don't actually have them yet to forward!

Cheers,
Brad

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Asked On
2003-08-28 at 01:59:11ID20722406
Tags

url

,

variable

,

form

,

passing

Topic

ColdFusion Application Server

Participating Experts
4
Points
300
Comments
11

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Answers

 

by: anandkpPosted on 2003-08-28 at 03:45:06ID: 9239109

Hi Brad,

why u want to use URL values - why not use FORM.

I am saying so - bcos u ahve it submitting it to itself - so the form values will be defined
no need to submit thru URL

& if u think going by URL is the best way for u
then use javascript to populate teh variables in URL

eg :

<SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript">
<!--
function callme()
{
      document.frm.action="pagename.cfm?var1='"+document.frm.username.value+"'";
      document.frm.submit();
}
//-->
</SCRIPT>


<form NAME="frm" METHOD="post">
      
      <input NAME="username" VALUE="">
      
      <img src="/images/submit.gif" ONCLICK="javascript:callme()">
      
</FORM>

copy this code & run on ur machine to see how it works

hope it helps

let me know

K'Rgds
Anand

 

by: bradderickPosted on 2003-08-28 at 03:55:42ID: 9239153

The reason that i want them passed through url variables is cause they need to stay when doing multi page searches, ie when they access page 11 of records etc, the info is there via the url variables, and also there are multiple forms on the page.

Would i be able to stick that ONCLICK="javascript:callme()" into a <input type=submit>?

Cheers,
Brad

 

by: pimpsuitPosted on 2003-08-28 at 05:06:55ID: 9239532

Brad, why not use <form action="get"> which will pass any form fields as url variables. Then you can pass the same url variables via cgi.querystring whenever the user moves from page to page.

 

by: anandkpPosted on 2003-08-28 at 05:18:15ID: 9239604

I didnt use a input type submit - cos i want to control the submission of the form

if i have it as : input type="submit" - then it wont serve my purpose

so u'll have to keep it as a normal image tag & then use the javascript to carry on .....

 

by: substandPosted on 2003-08-28 at 09:01:09ID: 9241690

there's no reason you can't do <input type="submit" onclick="callme();">

but if you are passing them all via url, pimpsuit has the best solution.    

 

by: cheekycjPosted on 2003-08-28 at 12:38:42ID: 9243255

also remember your FORM object is a structure.  you can loop over it and use evaluate to recreate your search form and data as hidden form fields if you do not want to use url params or the get method.

Though I agree with others using get or url parameters is usually a std with searching.

CJ

 

by: bradderickPosted on 2003-08-28 at 18:22:01ID: 9244891

Thanks for the quick follow up guys.

It looks like form action=get seems to be the way to do this. I'll go have a read up on it as have been using post till now. All the time i learn new stuff, it just allows me to see how much there is yet to go!

Thanks for the info about the form as structure, it hadn't occured to me. Will be very useful.

Going to spread points again!

Cheers,
Brad

 

by: cheekycjPosted on 2003-08-28 at 18:32:01ID: 9244925

Thnx for the "A"

CJ

 

by: substandPosted on 2003-08-28 at 19:22:21ID: 9245087

brad- one more note.  actually it is preferred to use action="get" when searching, this way the user can bookmark the search results if they want to.   if you use post and they bookmark the search results page, it is likely they will get an error (unless you plan for it), and if not an error, they won't get the results they bookmarked.  

 i don't always follow that methodology because I'm lazy at times (not that its hard to change "post" to "get" but that i would need to go replace all my form. with url. and its not a simple s&r all the time), but its worth doing just because of that.


 

by: bradderickPosted on 2003-08-28 at 19:58:59ID: 9245240

thanks for all the excellent input, didn't know that substand and will certainly come in useful.


just for the record for anyone else that reads this thread down the line, referring to:

http://www.houseoffusion.com/cf_lists/cache/4/22/22133.htm

you can't use method="get" with a cfform tag, has to be a regular form tag OR you have to pass to an intermediate page that will append the url variables using cflocation=

Cheers,
Brad

 

by: pimpsuitPosted on 2003-08-29 at 05:14:54ID: 9247211

Brad, that last bit sounds a little too complicated. I think you would only have to test for the existence of a form field - letting you know that the user is coming from the page where they've entered criteria - and then use a few lines of code to move form variables to url scope:

<cfif isdefined("form.search_criteria")>
  <cfscript>
    for(key in form){
      if(NOT isDefined('url.#key#') AND NOT key IS "FIELDNAMES"){
        SetVariable("url.#key#",trim(evaluate("form['#key#']")));}}
  </cfscript>
</cfif>

If you put the preceding code at the top of your search results page, you could then use either form or url variables as your incoming search criteria.

20120131-EE-VQP-002

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