if (!$this->data['HardwareGroup']['referer']) {
$this->data['HardwareGroup']['referer'] = $this->referer();
}
Needs to go into your controllers add/edit methods and is simply doing
the job of checking if there is already a referer value in the data
array(i.e. the form has been submitted and there were errors so it's
been shown again). If it is the first time the form has been
requested, it inserts the forms referring url into the data array and
you need to include that value in your add/edit form (hidden field as
shown above) for it to be passed back to the controller after
submitting the form.
If this $this->data['HardwareGroup']['referer'] is being set as $this-
>referer() every time then you haven't included the value in your
form.
Paul.
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