172 lines
3.6 KiB
PHP
Executable File
172 lines
3.6 KiB
PHP
Executable File
<?php namespace Illuminate\Database\Eloquent\Relations;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Database\Eloquent\Builder;
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class Pivot extends Model {
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/**
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* The parent model of the relationship.
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*
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* @var \Illuminate\Database\Eloquent\Model
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*/
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protected $parent;
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/**
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* The name of the foreign key column.
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*
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* @var string
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*/
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protected $foreignKey;
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/**
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* The name of the "other key" column.
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*
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* @var string
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*/
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protected $otherKey;
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/**
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* The attributes that aren't mass assignable.
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*
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* @var array
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*/
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protected $guarded = array();
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/**
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* Create a new pivot model instance.
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*
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* @param \Illuminate\Database\Eloquent\Model $parent
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* @param array $attributes
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* @param string $table
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* @param bool $exists
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* @return void
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*/
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public function __construct(Model $parent, $attributes, $table, $exists = false)
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{
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parent::__construct();
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// The pivot model is a "dynamic" model since we will set the tables dynamically
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// for the instance. This allows it work for any intermediate tables for the
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// many to many relationship that are defined by this developer's classes.
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$this->setRawAttributes($attributes, true);
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$this->setTable($table);
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$this->setConnection($parent->getConnectionName());
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// We store off the parent instance so we will access the timestamp column names
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// for the model, since the pivot model timestamps aren't easily configurable
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// from the developer's point of view. We can use the parents to get these.
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$this->parent = $parent;
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$this->exists = $exists;
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$this->timestamps = $this->hasTimestampAttributes();
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}
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/**
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* Set the keys for a save update query.
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*
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* @param \Illuminate\Database\Eloquent\Builder
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* @return \Illuminate\Database\Eloquent\Builder
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*/
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protected function setKeysForSaveQuery(Builder $query)
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{
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$query->where($this->foreignKey, $this->getAttribute($this->foreignKey));
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return $query->where($this->otherKey, $this->getAttribute($this->otherKey));
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}
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/**
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* Delete the pivot model record from the database.
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*
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* @return int
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*/
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public function delete()
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{
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return $this->getDeleteQuery()->delete();
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}
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/**
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* Get the query builder for a delete operation on the pivot.
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*
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* @return \Illuminate\Database\Eloquent\Builder
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*/
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protected function getDeleteQuery()
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{
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$foreign = $this->getAttribute($this->foreignKey);
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$query = $this->newQuery()->where($this->foreignKey, $foreign);
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return $query->where($this->otherKey, $this->getAttribute($this->otherKey));
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}
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/**
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* Get the foreign key column name.
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*
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* @return string
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*/
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public function getForeignKey()
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{
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return $this->foreignKey;
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}
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/**
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* Get the "other key" column name.
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*
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* @return string
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*/
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public function getOtherKey()
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{
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return $this->otherKey;
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}
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/**
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* Set the key names for the pivot model instance.
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*
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* @param string $foreignKey
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* @param string $otherKey
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* @return $this
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*/
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public function setPivotKeys($foreignKey, $otherKey)
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{
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$this->foreignKey = $foreignKey;
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$this->otherKey = $otherKey;
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return $this;
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}
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/**
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* Determine if the pivot model has timestamp attributes.
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*
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* @return bool
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*/
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public function hasTimestampAttributes()
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{
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return array_key_exists($this->getCreatedAtColumn(), $this->attributes);
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}
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/**
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* Get the name of the "created at" column.
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*
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* @return string
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*/
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public function getCreatedAtColumn()
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{
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return $this->parent->getCreatedAtColumn();
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}
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/**
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* Get the name of the "updated at" column.
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*
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* @return string
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*/
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public function getUpdatedAtColumn()
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{
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return $this->parent->getUpdatedAtColumn();
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}
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}
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