cfcs with forms

Forum|Forum|17 years ago
July 10, 2008
6 replies
619 views

I can't find anywhere about this googling has anyone got a guide to it-or where can i find some info on it? thanks

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H

HydrowizardAuthor

Inspiring

Thanks Ian, so if I was to do it the wrong/not commonly used way I would cfparam the arguments and put them into the session not the form values and error check the arguments like this:
<cfif arguments.Name EQ "">
<cfset errors = errors & "where the name half a brain?"></cfif>
and then I would output the session vars in the form actually in the cfc?

So the best way is dan's way then, so I would send the form to another cfm form where I would invoke the cfc-what would I actually do/check/set on the cfc? Thank-you

D

Dan_Bracuk

Inspiring

quote:

Originally posted by: Hydrowizard
Thanks Ian, so if I was to do it the wrong/not commonly used way I would cfparam the arguments and put them into the session not the form values and error check the arguments like this:
<cfif arguments.Name EQ "">
<cfset errors = errors & "where the name half a brain?"></cfif>
and then I would output the session vars in the form actually in the cfc?

If you are making your arguments mandatory, you have to send them a value. I'm not sure, but I don't think an empty string will suffice. You probably want to cfparam your form fields before you invoke the cfc.

You didn't ask, but argumentcollection="#form#" is a handy thing to know.

H

HydrowizardAuthor

Inspiring

You are right Dan an empty string didn't sufice. Anyway it works now thanks

N

Newsgroup_User

Inspiring

Hydrowizard wrote:
> also would the form variables actually now be argument variables instead in the cfc?

Using a CFC as the action of a form is not a commonly used feature. But
it is supported. If you choose to do this, then yes, each form field
becomes an argument of the method called as the form action.

H

HydrowizardAuthor

Inspiring

also would the form variables actually now be argument variables instead in the cfc?

D

Dan_Bracuk

Inspiring

My preferred method is to send a form to another cfm template which accesses the cfc using cfinvoke or CreateObject. If you prefer tags to script, you can use cfobject instead of create object.

H

HydrowizardAuthor

Inspiring

Thanks Dan that sounds like an interesting way of doing it. For my test I am trying to do it all in the cfc like the code below which works. However, normally I would do this with a simple post and action page and on the action page I would do the following:
create a structure to hold session variables, then do some cfparams to check the form values and assign a default "" to them, clear the session and then put the form values into the session to be able to save what the user put in the form. I do error checking by doing <cfparam name="errors" type="string" default=""> and setting each error message in the cfif blocks.

What do you think of my skeleton code below, I am tempted to do exactly the same in the cfc as I do in my action page but where would I output the session vars to the user in a new form? I would have to do output="true" on the cfc and then that would house the form? I'm not understanding this at the moment! Thanks for helping me out on these concepts.

H

HydrowizardAuthor

Inspiring

how to do them i know how to send the form to a cfc it is then best practices from there

N

Newsgroup_User

Inspiring

what exactly are you looking for about cfcs and forms?

Azadi Saryev
Sabai-dee.com
http://www.sabai-dee.com/