_prepareUpdateFields()

DboSource.php

/**
 * Quotes and prepares fields and values for an SQL UPDATE statement
 *
 * @param Model $Model The model to prepare fields for.
 * @param array $fields The fields to update.
 * @param bool $quoteValues If values should be quoted, or treated as SQL snippets
 * @param bool $alias Include the model alias in the field name
 * @return array Fields and values, quoted and prepared
 */
	protected function _prepareUpdateFields(Model $Model, $fields, $quoteValues = true, $alias = false) {
		$quotedAlias = $this->startQuote . $Model->alias . $this->endQuote;
		$schema = $Model->schema();

		$updates = array();
		foreach ($fields as $field => $value) {
			if ($alias && strpos($field, '.') === false) {
				$quoted = $Model->escapeField($field);
			} elseif (!$alias && strpos($field, '.') !== false) {
				$quoted = $this->name(str_replace($quotedAlias . '.', '', str_replace(
					$Model->alias . '.', '', $field
				)));
			} else {
				$quoted = $this->name($field);
			}

			if ($value === null) {
				$updates[] = $quoted . ' = NULL';
				continue;
			}
			$update = $quoted . ' = ';

			if ($quoteValues) {
				$update .= $this->value($value, $Model->getColumnType($field), isset($schema[$field]) ? $schema[$field]['null'] : true);
			} elseif ($Model->getColumnType($field) === 'boolean' && (is_int($value) || is_bool($value))) {
				$update .= $this->boolean($value, true);
			} elseif (!$alias) {
				$update .= str_replace($quotedAlias . '.', '', str_replace(
					$Model->alias . '.', '', $value
				));
			}
			elseif (is_string($value)) {
				$update .= $this->value($value, 'string');
			} else {
				$update .= $value;
			}
			$updates[] = $update;
		}
		return $updates;
	}