Default values for form
I am building a form for my office that submits information to a database. I would like to use the same form to add new information and modify existing information. I also want the form to retain the data once it is submitted (i.e. If the user clicks on send and there is a required field blank, the form is re-load with the stored data.)
I'm not allowed to use javascript (the agency rule).
I started with something like this for each field:
<cfinput type="text" name="title" value="#FORM.title#" />
That's fine, but then I added the Edit option. A photo of the user entry on a previous page that transmits an id number in the URL (ex: form.cfm? edit = 32) to the form.
When URL.edit has one value other than zero (default assigned cfparam), it triggers a query that retrieves data from the database. I want these data to fill in the form, so I tried this:
<cfinput type="text" name="title" value="#iif(URL.edit eq 0,DE(FORM.title),DE(queryname.title))#" />
This works perfectly if the query is run, but I get an error when I load the blank form:
Element TITLE is undefined in QUERYNAME.
I'm basically train make empty if the form is loaded from scratch, the default value of form make the previous form values if the form is re-charge after submission, or and use the query if a URL parameter is passed.
Is it possible to make this work? I don't want to have to write several versions of the form.
Your half-way, you have just basiclly need to combine your two approaches.
Set a collection of variables to fill the fields of the form.
Then if there is a query is run, set this collection with the values of the query. It is roughly as follows, and there are different ways of this skin for apporached different framework.
Tags: ColdFusion
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