Sprig_Core::__get PHP Метод

    public function __get($name)
    {
        if (!$this->_init) {
            // The constructor must always be called first
            $this->__construct();
            // This object is about to be loaded by mysql_fetch_object() or similar
            $this->state('loading');
        }
        if (!isset($this->_fields[$name])) {
            throw new Sprig_Exception(':name model does not have a field :field', array(':name' => get_class($this), ':field' => $name));
        }
        if (isset($this->_related[$name])) {
            // Shortcut to any related object
            return $this->_related[$name];
        }
        $field = $this->_fields[$name];
        if ($this->changed($name)) {
            $value = $this->_changed[$name];
        } elseif (array_key_exists($name, $this->_original)) {
            $value = $this->_original[$name];
        }
        if ($field instanceof Sprig_Field_ForeignKey) {
            if (!isset($this->_related[$name])) {
                $model = Sprig::factory($field->model);
                if ($field instanceof Sprig_Field_HasMany) {
                    if ($field instanceof Sprig_Field_ManyToMany) {
                        if (isset($value)) {
                            if (empty($value)) {
                                return new Database_Result_Cached(array(), '');
                            } else {
                                // TODO this needs testing
                                $wrapped = array_map(array($model->field($model->pk()), '_database_wrap'), $value);
                                $query = DB::select()->where($model->pk(), 'IN', $wrapped);
                            }
                        } else {
                            // We can grab the PK from the field definition.
                            // If it doesn't exist, revert to the model choice
                            if (isset($field->left_foreign_key) and $field->left_foreign_key) {
                                $fk = $field->through . '.' . $field->left_foreign_key;
                                $fk2 = $field->through . '.' . $model->pk();
                            } else {
                                $fk = $this->fk($field->through);
                                $fk2 = $model->fk($field->through);
                            }
                            $query = DB::select()->join($field->through)->on($fk2, '=', $model->pk(TRUE))->where($fk, '=', $this->_fields[$this->_primary_key]->_database_wrap($this->{$this->_primary_key}));
                        }
                    } else {
                        if (isset($value)) {
                            $query = DB::select()->where($model->pk(), '=', $field->_database_wrap($value));
                        } else {
                            if (isset($field->foreign_key) and $field->foreign_key) {
                                $fk = $field->foreign_key;
                            } else {
                                $fk = $this->fk();
                            }
                            $query = DB::select()->where($fk, '=', $this->_fields[$this->_primary_key]->_database_wrap($this->{$this->_primary_key}));
                        }
                    }
                    $related = $model->load($query, NULL);
                    if (!$this->changed($name)) {
                        // We can assume this is the original value because no
                        // changed value exists
                        $this->_original[$name] = $field->value($related);
                    }
                } elseif ($field instanceof Sprig_Field_BelongsTo) {
                    if (isset($field->primary_key) and $field->primary_key) {
                        $pk = $field->primary_key;
                    } else {
                        $pk = $model->pk();
                    }
                    $related = $model->values(array($pk => $value));
                } elseif ($field instanceof Sprig_Field_HasOne) {
                    $related = $model->values(array($this->_model => $this->{$this->_primary_key}));
                }
                $value = $this->_related[$name] = $related;
            }
        }
        return $value;
    }