MW WP Form のカスタムバリデーションルール

if ( class_exists( 'MW_WP_Form_Abstract_Validation_Rule' ) ) {
	class MW_WP_Form_Validation_Rule_MaxCheckBox extends MW_WP_Form_Abstract_Validation_Rule {
		protected $name = 'maxcheckbox';

		public function rule( $key, array $options = array() ) {
			$value = $this->Data->get( $key );
			if ( ! MWF_Functions::is_empty( $value ) ) {
				$separator = $this->Data->get_separator_value( $key );
				$values = explode( $separator, $value );
				if ( MWF_Functions::is_numeric( $options['max'] ) && count( $values ) > $options['max'] ) {
					$defaults = array(
						'max' => 0,
						'message' => sprintf( '最大 %d 個まで', $options['max'] )
					);
					$options = array_merge( $defaults, $options );
					return $options['message'];
				}
			}
		}

		public function admin( $key, $value ) {
			$max = '';
			if ( is_array( $value[$this->getName()] ) && isset( $value[$this->getName()]['max'] ) ) {
				$max = $value[$this->getName()]['max'];
			}
			?>
			<table>
				<tr>
					<td>最大チェック数</td>
					<td><input type="text" value="<?php echo esc_attr( $max ); ?>" size="3" name="<?php echo MWF_Config::NAME; ?>[validation][<?php echo $key; ?>][<?php echo esc_attr( $this->getName() ); ?>][max]" /></td>
				</tr>
			</table>
			<?php
		}
	}

	function mwform_validation_rule_maxcheckbox( $validation_rules ) {
		$instance = new MW_WP_Form_Validation_Rule_MaxCheckBox();
		$validation_rules[$instance->getName()] = $instance;
		return $validation_rules;
	}

	add_filter( 'mwform_validation_rules', 'mwform_validation_rule_maxcheckbox' );
}

if ( class_exists( 'MW_WP_Form_Abstract_Validation_Rule' ) ) {
	class MW_WP_Form_Validation_Rule_AnyRequired extends MW_WP_Form_Abstract_Validation_Rule {
		protected $name = 'anyrequired';

		public function rule( $key, array $options = array() ) {
			$value = $this->Data->get( $key );

			if ( empty( $this->Data->gets() ) ) {
				return;
			}

			$targets = array_map( 'trim', explode( ',', $options['target'] ) );
			$targets[] = $key;

			$count = 0;
			foreach ( $targets as $target ) {
				$target_value = $this->Data->get( $target );
				if ( ! empty( $target_value ) || ! MWF_Functions::is_empty( $target_value ) ) {
					$count++;
				}
			}
			if ( $count == 0 ) {
				$defaults = array(
					'target' => null,
					'message' => sprintf( '%s のいずれも未入力です。', implode( ', ', $targets ) )
				);
				$options = array_merge( $defaults, $options );
				return $options['message'];
			}
		}

		public function admin( $key, $value ) {
			$target = '';
			if ( is_array( $value[$this->getName()] ) && isset( $value[$this->getName()]['target'] ) ) {
				$target = $value[$this->getName()]['target'];
			}
			?>
			<table>
				<tr>
					<td>いずれか必須項目</td>
					<td>
						<input type="text" value="<?php echo esc_attr( $target ); ?>" name="<?php echo MWF_Config::NAME; ?>[validation][<?php echo $key; ?>][<?php echo esc_attr( $this->getName() ); ?>][target]" />
						<span class="mwf_note">（カンマ区切り）</span>
					</td>
				</tr>
			</table>
			<?php
		}
	}

	function mwform_validation_rule_anyrequired( $validation_rules ) {
		$instance = new MW_WP_Form_Validation_Rule_AnyRequired();
		$validation_rules[$instance->getName()] = $instance;
		return $validation_rules;
	}

	add_filter( 'mwform_validation_rules', 'mwform_validation_rule_anyrequired' );
}

if ( class_exists( 'MW_WP_Form_Abstract_Validation_Rule' ) ) {
	class MW_WP_Form_Validation_Rule_Japanese extends MW_WP_Form_Abstract_Validation_Rule {
		protected $name = 'japanese';

		public function rule( $key, array $options = array() ) {
			$value = $this->Data->get( $key );
			if ( is_null( $value ) ) {
				return;
			}
			if ( preg_match( '/[一-龠]+|[ぁ-ん]+|[ァ-ヴー]/u', $value ) ) {
				return;
			}
			$defaults = array(
				'message' => '日本語で入力してください。'
			);
			$options = array_merge( $defaults, $options );
			return $options['message'];
		}

		public function admin( $key, $value ) {
			?>
			<label><input type="checkbox" <?php checked( $value[ $this->getName() ], 1 ); ?> name="<?php echo MWF_Config::NAME; ?>[validation][<?php echo $key; ?>][<?php echo esc_attr( $this->getName() ); ?>]" value="1" />日本語を含む</label>
			<?php
		}
	}

	function mwform_validation_rule_japanese( $validation_rules ) {
		$instance = new MW_WP_Form_Validation_Rule_Japanese();
		$validation_rules[$instance->getName()] = $instance;
		return $validation_rules;
	}

	add_filter( 'mwform_validation_rules', 'mwform_validation_rule_japanese' );
}