ColdFusion Ajax Javascript question. Please help!!!

[micjohnson]

Here is my question.

I have 3 form fields(Proj name, description and userid). Proj name and Proj description are new inputs from user. But for the thrid field "userid", I need to verify the existence against DB.

As now all 3 validations are working except the userid ajax validation when displays "The user does not exists" alert message and proceed to submit form instead of halt on the page.

What do I need to do to stop the flow if the user does not exists and make the customer to type a valid userid?

Thanks in advance.


fucntion checkForm(){
// Validate Proj name
if (document.form1.ProjtName.value.length == 0)
{
alert("Please enter a Project Name");
document.form1.ProjectName.focus();
return false;
}
// Validate Proj description
if (document.form1.ProjDescription.value.length == 0)
{
alert("Please enter a Project Description");
document.form1.ProjDescription.focus();
return false;
}
//AJAX call to validate userid
if (validateUserid() == false){
return false;
}

return true;
}



// Validate userid
validateUserid = function (userid){
if ($.trim(userid.value) != ''){
$.getJSON("../com/user.cfc", {
method: 'getUserInfoJSON',
attuid: userid.value,
returnformat: 'json'
}, function(strClient){
if (strClient == '') {
alert('The user does not exists.');
return false;;
}
});
}
};

 

[LyndonOHRC]

Are you getting an error? This line:

 return false;;

has an extraneous semi-colon.

Without seeing your html it's hard to offer much more...

Lyndon

---People Remember about 10% of what you say ---They never forget how you made them feel. Covey

 

[lauridsd]

If you happen to be using CFFORM and CFINPUTs in your form to handle basic validation, and are calling your checkForm() JS function "onSubmit", that is possibly the problem.

I have had an issue where the CF auto-generated validation for fields using CFINPUT will ALWAYS return "true" if it passes that validation, regardless of anything returned by your own supplemental validation function.

If you are using CFFORM / CFINPUT and are calling your extra validation onSubmit, look at the rendered source code for your page. In my case, the CF validation inserted a call to my validation function at the end of the auto generated code, but threw in a "return true;" in such a way that the page always returned "true".

My fix was to trigger the validation using "onClick" or "onBlur" for individual fields, OR to not use CFFORM/CFINPUT.

A side note: mixing CF's auto validation via CFFORM/CFINPUT and supplemental validation using JS or jQuery will result in the validations to run separately. While not really a problem, it can be a little odd for the user, especially if you normally code your validation to show all form errors/issues at the same time.