NYCPHP Meetup

[Mark Armendariz]

>>> From: talk-bounces at lists.nyphp.org [mailto:talk-bounces at lists.nyphp.org]
On Behalf Of David Mintz
 >>> 	I have experimented with converting a PHP array of error messages
(fieldName => errorMessage, etc) into JSON and sending that back, then doing
DOM scripting to stick the error messages into some DIVs. Kind of a lot of
work, but it's efficient in the sense that you only send data that the front
end needs.

I like the previously mentioned ideas of returning an error code in the
header.  I currently just return an error array in the returned data.  I
definitely agree that sending back an entire form that already exists is too
much.

I do something very similar to your method.  If your fields have id's based
on their names you can manipulate them pretty easily to show the error.
Here's something similar to how I do it...

/*
 * ids are field_<field_name> so an email field would have an id of
field_email
 *** oReturnedData would be a JSON object from the server
 */

// example var
var oReturnedData = {
	errors : [
			{field: 'email', message: 'we do not accept hotmail
accounts'},
			{field: 'age',   message: 'you must be over 21 to
register'},					{field: 'phone', message:
'we both know this is not a phone number'}
		   ],
	otherstuff : []
    }

if (oReturnedData.errors !== undefined)
&&  oReturnedData.errors.length) {
    $A(oReturnedData.errors).each(
        function(oError) {
            if ($('field_' + oError.field) !== null) {  
                var sField = '<p class="error">' + oError.message + '</p>'
                new Insertion.After($(oError.field), sField);
            }
        }.bind(this)
    );
}

I usually manipulate the field labels, but I figured this shows the general
idea best and simplest.

Mark