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Add new models (Album, Band and Track) (implement #347)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| <?php | ||
|
|
||
| App::uses('AppModel', 'Model'); | ||
|
|
||
| /** | ||
| * The Album Model. Represents an album. | ||
| * | ||
| * An album is defined with a unique ID, a name, a year and a cover. It belongs | ||
| * to a Band identified by the "band_id" key and contains one or several Tracks. | ||
| */ | ||
| class Album extends AppModel | ||
| { | ||
| private $bandId; | ||
| public $belongsTo = array('Band'); | ||
| public $hasMany = array('Track'); | ||
| public $validate = array( | ||
| 'name' => array( | ||
| 'rule' => array('maxLength', 255), | ||
| 'required' => 'create', | ||
| 'allowEmpty' => false, | ||
| 'message' => 'Album\'s name cannot be empty or exceed 255 characters.' | ||
| ), | ||
| 'cover' => array( | ||
| 'rule' => array('maxLength', 37), | ||
| 'allowEmpty' => true, | ||
| 'message' => 'Album\'s cover cannot exceed 37 characters.' | ||
| ), | ||
| 'year' => array( | ||
| 'rule' => array('date', 'y'), | ||
| 'allowEmpty' => true, | ||
| 'message' => 'Invalid album year.' | ||
| ) | ||
| ); | ||
|
|
||
| /** | ||
| * Allow empty value for the "name" field on update. | ||
| * | ||
| * @param array $options | ||
| * @return bool|void | ||
| */ | ||
| public function beforeValidate($options = array()) | ||
| { | ||
| if (isset($this->data[$this->alias]['id'])) { | ||
| $this->validator()->getField('name')->getRule(0)->allowEmpty = true; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Override the "created" and the "updated" fields to ensure they are | ||
| * properly filled. | ||
| * | ||
| * @param array $options | ||
| * @return bool | ||
| */ | ||
| public function beforeSave($options = array()) | ||
| { | ||
| if (isset($this->data[$this->alias]['id'])) { | ||
| $this->data[$this->alias]['updated'] = date('Y-m-d H:i:s'); | ||
| unset($this->data[$this->alias]['created']); | ||
| } else { | ||
| $this->data[$this->alias]['created'] = date('Y-m-d H:i:s'); | ||
| unset($this->data[$this->alias]['updated']); | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Stores the Band id the deleted album belongs to, to perform further | ||
| * checks once the record is deleted (the ID is used in the afterDelete() | ||
| * method). | ||
| * | ||
| * @param bool $cascade | ||
| * @return bool | ||
| */ | ||
| public function beforeDelete($cascade = false) | ||
| { | ||
| $album = $this->find('first', array( | ||
| 'fields' => array('band_id'), | ||
| 'conditions' => array('id' => $this->id) | ||
| )); | ||
|
|
||
| if (isset($album)) { | ||
| $this->bandId = $album[$this->alias]['band_id']; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Checks if the Band the deleted album belongs to still have albums, and | ||
| * deletes it if it's not the case. | ||
| */ | ||
| public function afterDelete() | ||
| { | ||
| if (!empty($this->bandId)) { | ||
| $neighbours = $this->find('count', array( | ||
| 'conditions' => array('band_id' => $this->bandId) | ||
| )); | ||
|
|
||
| if ($neighbours == 0) { | ||
| $band = ClassRegistry::init('Band'); | ||
| $band->delete($this->bandId); | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| <?php | ||
|
|
||
| App::uses('AppModel', 'Model'); | ||
|
|
||
| /** | ||
| * The Band Model. Represents a band. | ||
| * | ||
| * A band is defined with a unique ID and a name. It has one or several albums. | ||
| */ | ||
| class Band extends AppModel | ||
| { | ||
| public $hasMany = array('Album'); | ||
| public $validate = array( | ||
| 'name' => array( | ||
| 'rule' => array('maxLength', 255), | ||
| 'required' => 'create', | ||
| 'allowEmpty' => false, | ||
| 'message' => 'The band\'s name cannot be empty or exceed 255 characters.' | ||
| ) | ||
| ); | ||
|
|
||
| /** | ||
| * Allow empty value for the "name" field on update. | ||
| * | ||
| * @param array $options | ||
| * @return bool|void | ||
| */ | ||
| public function beforeValidate($options = array()) | ||
| { | ||
| if (isset($this->data[$this->alias]['id'])) { | ||
| $this->validator()->getField('name')->getRule(0)->allowEmpty = true; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Override the "created" and the "updated" fields to ensure they are | ||
| * properly filled. | ||
| * | ||
| * @param array $options | ||
| * @return bool | ||
| */ | ||
| public function beforeSave($options = array()) | ||
| { | ||
| if (isset($this->data[$this->alias]['id'])) { | ||
| $this->data[$this->alias]['updated'] = date('Y-m-d H:i:s'); | ||
| unset($this->data[$this->alias]['created']); | ||
| } else { | ||
| $this->data[$this->alias]['created'] = date('Y-m-d H:i:s'); | ||
| unset($this->data[$this->alias]['updated']); | ||
| } | ||
| return true; | ||
| } | ||
| } |
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