I'm no expert, but this might help:
CakePHP's model validation treats later rules with a higher priority
than earlier ones. This means that if neither rule is matched, it's
the last rule's message that will show. I'm not sure why it works this
way, but that's what seems to happen.
So for example, a blank name might trigger the "it's empty" rule as
well as the "this name's already taken" rule if you already put in a
blank name while testing the form earlier on, and the last of those
rules is the one you'd see the message for.
Most of what the thread you linked to was about seemed to be moving
messages into the view. The way this works is that you name your rules
in the model, and if any given rule is the reason the data couldn't
save, that rule name is passed to the view so it can print out the
specific error message for that rule.
The model's validation has this kind of syntax:
var $validate = array(
'fieldElement' => array(
'madeUpRuleName' => array(
'rule' => 'ruleFunction'
),
'anotherRuleName' => array(
'rule' => 'otherRuleFunction'
)
)
)
So ruleFunction and otherRuleFunction would be the names of the rules
to apply, such as alphaNumeric, between, or any method you create in
that model or app_model that returns TRUE when it's happy.
madeUpRuleName and anotherRuleName, on the other hand, are arbitrary
names you can make up for the rules. Their purpose is to get passed on
to the view, so you can give them error messages like this:
echo $form->input('fieldElement', array(
'label' => 'Fancy name',
'error' => array(
'madeUpRuleName' => 'You also did not do this right',
'anotherRuleName' => 'You did not do this right'
)
));
Note that if neither rule is met, anotherRuleName will be the one to
give an error message because it appears lower on in the model. (The
order in the view doesn't seem to matter.)
I hope I got this right... I suspect someone might correct me now. :)
Hope that helps,
Zoe.
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