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S
Silvestro
Known Participant
March 20, 2011
Question

Checking for form posting

  • March 20, 2011
  • 1 reply
  • 451 views

Hello again,

what is the best way to check if a form was submitted?

I use to put a hidden field within the form with value="1", then a cfparam with default="". If form value neq "" then [process form].

Do you have any better advice?

Thank you very much

This topic has been closed for replies.

1 reply

A
Adam Cameron.
Inspiring
March 20, 2011

Well: you could test that the request method was a POST (if your form submission is a post, that is), via CGI.REQUEST_METHOD.  But what you really need to check is that the form fields you're expecting/needing are there... structKeyExists(form, "formFieldNameHere").  You should really check each form-scoped variable your "action page" needs before charging off and using it.  Check for existence, as well as it being "valid" according to whatever validation rules you have, eg: an "age" field needs to be a positive integer, or something like that.

What you should not do is to check one form field and then assume everything else is all-present and correct.

--

Adam

S
SilvestroAuthor
Known Participant
March 20, 2011

Thanks Adam,

and how can I do this, is cfparam enough? I know it has some constraints...

D
Dan_Bracuk
Inspiring
March 20, 2011

Not only is cfparam not enough, it will sabotage what you say you are trying to accomplish.  Read Adam's answer again, and take it literally.

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