Raising errors without throwing exceptions

[john mossell]

Hi,

If a user fills in a form incorrectly, how can I tell him without
throwing an exception. I don't want to throw an exception because if
he fills the username and comment field in incorrectly, I want to tell
him that both are wrong, not just one. Also with exceptions, the code
is stopped and the input form (signup form etc) doesn't show-- only
the exception error message shows. I want to show a list of errors in
the form and also show the form.

Thanks...

[zenith]

Hi,
what does it mean that the fields are wrong exactly?

You can check the input values in javascript, or by creating variables
in php that indicate the errors.

[gabor de mooij]

create a function called $this->checkProperties(), put it in a class called

class Model_User extends RedBean_SimpleModel { ... }

now if a user registers (example) import the fields like you used to,
using R::import and do R::store($user).

Now create a method in your user class called update() :

public function update() {
$this->checkProperties(); //your bean is here: $this->bean
}

Throw an exception and attach a list of fields to the exception (using
the message), or store the list in another property of the class.
RedBean will find the Model_User automatically; this is Fuse.

Cheers,
Gabor

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[john mossell]

So after I've stored the user:


class Model_User extends RedBean_SimpleModel
{

public function update()
{
$this->checkProperties();
}

public function checkProperties()
{
if ( (strlen($this->username)) < 6 || (strlen($this-
>username)) > 12 )
{
throw new Exception('Username must be between 6 and 12
characters.');
}

if ( (!preg_match( "(^[a-zA-Z0-9_]*$)" ,$this->username)) )
{
throw new Exception('Username can only contain
alphanumeric characters (a-z, 0-9 and _)')
}
}

}

So, if a user enters a username that is less than 6 characters AND
also does not match the regex pattern, I want to show both exceptions.


There was a problem with your form submission:
-- Username must be between 6 and 12 characters.
-- Username can only contain alphanumeric characters.

// then show form here

[john mossell]

Actually I've decided to change it a bit, here is the full code, I
want to do something like this

public function update
{
// for each bean (i.e. username, name and email):
if ( in_array($this->bean, $this->_errors))
{
return $this->bean->getError(); // so I can display each
error under each form field
}
}

My model is fuse is as follows:

class Model_User extends RedBean_SimpleModel
{
# internal variables
protected $_errors = array();

public function update()
{
$this->checkProperties();
}


public function checkProperties()
{
if ( (strlen($this->username)) < 6 || (strlen($this-
>username)) > 12 )
{

$this->_errors[$this->bean] = 'Username must be between 6
and 12 characters.';

}

if ( (!preg_match( "(^[a-zA-Z0-9_]*$)" ,$this->username)) )
{

$this->_errors[$this->bean] = 'Username can only contain
alphanumeric characters (a-z, 0-9 and _)';
}

if ( strlen($this->password) < 7 )
{
$this->_errors[$this->bean] = 'Password must be longer
than 7 characters';
}

}


}

[gabor de mooij]

that is what I meant ;) this should work !

[john mossell]

I don't know what to do with the getErrors function though... how can
I access it from the outside?

On Dec 15, 11:21 am, gabor de mooij <gabordemo...@gmail.com> wrote:
> that is what I meant ;) this should work !
>
> On Tue, Dec 14, 2010 at 11:25 PM, john mossell
>

[gabor de mooij]

Well if getErrors() is part of your model and you can access the bean,
just fire the method on the bean:

$bean->getErrors();

Cheers ;)

[john mossell]

Sorry, I meant to write I don't know what code to put into $this-
>getErrors(), to get the errors for each bean...

[Alberto Ruffo]

Hello, i'd like to continue this post:

If i have this tables:

Customer

-----------------------------

id, name, surname

AND

Address

-----------------------------

id, address, number, city, customer_id

Customer has more addresses, so:

$address = R::dispense...

$address->import(...); // for instance, from $_POST['address']

$customer = R::dispense...

$customer->import(...); // for instance, from $_POST['customer']

$customer->ownAddress[] = $address;

try {

R::store($customer);

} catch (ModelException $e) {}

In this case, how do model validations work? 

I have to throw exception once and retrieve errors of both at the same time; but there are two model-validations which need two exceptions.