i once wrote a app_helper method for this:
/**
* checks a record, if it is unique - depending on other fields in
this table (transfered as array)
* example in model: 'rule' => array
('uniqueRecord',array('belongs_to_table_id','some_id','user_id')),
* if all keys (of the array transferred) match a record, return
false, otherwise true
* @param ARRAY other fields
* TODO: add possibity of deep nested validation (User -> Comment ->
CommentCategory: UNIQUE comment_id, Comment.user_id)
* 2010-01-30 ms
*/
function validateUnique($arguments, $fields = array(), $options =
null) {
$id =
(!empty($this->data[$this->alias]['id'])?$this->data[$this-
>alias]['id'] : 0);
foreach ($arguments as $key => $value) {
$fieldName = $key;
$fieldValue = $value; // equals:
$this->data[$this->alias]
[$fieldName]
}
if (empty($fieldName) || empty($fieldValue)) { // return true,
if
nothing is transfered (check on that first)
return true;
}
$conditions = array($this->alias.'.'.$fieldName => $fieldValue,
//
Model.field => $this->data['Model']['field']
$this->alias.'.id !=' => $id, );
foreach ((array )$fields as $dependingField) {
if (!empty($this->data[$this->alias][$dependingField]))
{ // add
ONLY if some content is transfered (check on that first!)
$conditions[$this->alias.'.'.$dependingField] =
$this->data[$this-
>alias][$dependingField];
} elseif
(!empty($this->data['Validation'][$dependingField])) { //
add ONLY if some content is transfered (check on that first!
$conditions[$this->alias.'.'.$dependingField] =
$this-
>data['Validation'][$dependingField];
} elseif (!empty($id)) {
# manual query! (only possible on edit)
$res = $this->find('first', array('fields' =>
array($this-
>alias.'.'.$dependingField), 'conditions' => array($this->alias.'.id'
=> $this->data[$this->alias]['id'])));
if (!empty($res)) {
$conditions[$this->alias.'.'.$dependingField] = $res[$this->alias]
[$dependingField];
}
}
}
$this->recursive = -1;
if (count($conditions) > 2) {
$this->recursive = 0;
}
$res = $this->find('first', array('fields' => array($this-
>alias.'.id'), 'conditions' => $conditions));
if (!empty($res)) {
return false;
}
return true;
}
On 22 Apr., 16:00, John Andersen <j.andersen...@gmail.com> wrote:
> What exactly is this validation supposed to validate?
> 1) That among the submitted data are no duplicate records (field1 +
> field2)?
> 2) That among the submitted data and the existing records in the table
> are no duplicate records?
>
> From what I see, the validation handles only no. 1). Is that correct?
> Enjoy,
> John
>
> On Apr 21, 9:08 pm, Andy Dirnberger <andy.dirnber...@gmail.com> wrote:
>
>
>
> > Here's a stripped down example of how I do it:
>
> > app_model.php
> > class AppModel extends Model {
>
> > ...
>
> > function isUniqueMulti($data, $fields) {
> > if (!is_array($fields)) {
> > $fields = array($fields);
> > }
>
> > foreach ($fields as $key) {
> > $tmp[$key] = $this->data[$this->name][$key];
> > }
>
> > return $this->isUnique($tmp, FALSE);
> > }
>
> > }
>
> > some_model.php
> > class SomeModel extends AppModel {
> > var $validate = array(
> > 'field1' => array(
> > 'rule' => array('isUniqueMulti', array('field1', 'field2')),
> > 'required' => TRUE,
> > 'message' => 'Error Message',
> > ),
> > 'field2' => array(
> > 'rule' => 'notEmpty',
> > 'required' => TRUE,
> > 'message' => 'Error Message',
> > ),
> > );
>
> > }
>
> > On Apr 21, 8:40 am, Swanny <stuarts...@gmail.com> wrote:
>
> > > Is there a way in a model to verify that a record does not exist
> > > already that matches a certain criteria. In the database table are
> > > three columns: id, list_id and product_id. I would like to be able to
> > > tell if there already exists a record with the same list_id AND
> > > product_id as the one being added using the form which would then
> > > produce an error as this would be a duplicate.
>
> > > Example: I try to add a product with product_id 23 and list_id 12 but
> > > the table already contains a record with this information.
>
> > > Thanks
>
> > > Check out the new CakePHP Questions sitehttp://cakeqs.organdhelpothers
> > > with their CakePHP related questions.
>
> > > You received this message because you are subscribed to the Google Groups
> > > "CakePHP" group.
> > > To post to this group, send email to cake-php@googlegroups.com
> > > To unsubscribe from this group, send email to
> > > cake-php+unsubscr...@googlegroups.com For more options, visit this group
> > > athttp://groups.google.com/group/cake-php?hl=en
>
> > Check out the new CakePHP Questions sitehttp://cakeqs.organdhelp others
> > with their CakePHP related questions.
>
> > You received this message because you are subscribed to the Google Groups
> > "CakePHP" group.
> > To post to this group, send email to cake-php@googlegroups.com
> > To unsubscribe from this group, send email to
> > cake-php+unsubscr...@googlegroups.com For more options, visit this group
> > athttp://groups.google.com/group/cake-php?hl=en
>
> Check out the new CakePHP Questions sitehttp://cakeqs.organd help others with
> their CakePHP related questions.
>
> You received this message because you are subscribed to the Google Groups
> "CakePHP" group.
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> athttp://groups.google.com/group/cake-php?hl=en
Check out the new CakePHP Questions site http://cakeqs.org and help others with
their CakePHP related questions.
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