Lithium Model Manual Schema Decleration Fix

gistfile1.php

  public static function schema($field = null) {
		$self = static::_object();

		if(is_array($self->_schema) && !empty($self->_schema)) {
			$schema = static::$_classes['schema'];
			$fields = $self->_schema;
			$self->_schema =  new $schema(compact('fields'));
		}
		if (!is_object($self->_schema)) {
			$self->_schema = static::connection()->describe(
				$self::meta('source'), $self->_schema, $self::meta()
			);
			if (!is_object($self->_schema)) {
				$class = get_called_class();
				throw new ConfigException("Could not load schema object for model `{$class}`.");
			}
			$key = (array) $self::meta('key');

			if ($self->_schema && $self->_schema->fields() && !$self->_schema->has($key)) {
				$key = implode('`, `', $key);
				throw new ConfigException("Missing key `{$key}` from schema.");
			}
		}
		if ($field === false) {
			return $self->_schema->reset();
		}
		if (is_array($field)) {
			return $self->_schema->append($field);
		}
		return $field ? $self->_schema->fields($field) : $self->_schema;
	}