'; $this->echo_field( $field, $post ); echo '
' . PHP_EOL; } /** * Generate HTML for displaying fields. * * @param mixed $data Data array. * @param object $post Post object. */ public function echo_field( $data = array(), $post = null ) { // Get field info. if ( isset( $data['field'] ) ) { $field = $data['field']; } else { $field = $data; } $option_name = ''; if ( isset( $data['option'] ) ) { $option_name = $data['option']; } /* Get saved data. */ $field_id = $field['id']; $data = null; /* Data to display, if set */ $option = get_option( $option_name, array() ); if ( is_array( $option ) && array_key_exists( $field_id, $option ) ) { $data = $option[ $field_id ]; } /* the reset element sets the value of the field, overriding whatever is in the option */ if ( array_key_exists( 'reset', $field ) ) { $data = $field['reset']; } /* Show default data if no option saved and default is supplied. */ if ( null === $data && isset( $field['default'] ) ) { $data = $field['default']; } elseif ( null === $data ) { $data = ''; } /* CSS class array */ $classes = array(); if ( array_key_exists( 'cssclass', $field ) ) { $classes = is_array( $field['cssclass'] ) ? $field['cssclass'] : array( $field['cssclass'] ); } echo 'echo_classes( $classes ) . ' '; echo 'name="' . esc_attr( $option_name ) . '[' . esc_attr( $field_id ) . ']" '; if ( array_key_exists( 'placeholder', $field ) ) { echo 'placeholder="' . esc_attr( $field['placeholder'] ) . '" '; } switch ( $field['type'] ) { case 'text': case 'url': case 'email': echo 'type="text" '; echo 'value="' . esc_attr( $data ) . '" '; break; case 'number': echo 'type="number" '; echo 'value="' . esc_attr( $data ) . '" '; if ( isset( $field['min'] ) ) { echo 'min="' . esc_attr( $field['min'] ) . '" '; } if ( isset( $field['max'] ) ) { echo 'max="' . esc_attr( $field['max'] ) . '" '; } if ( isset( $field['step'] ) ) { echo 'step="' . esc_attr( $field['step'] ) . '" '; } break; case 'password': case 'hidden': echo 'type="' . esc_attr( $field['type'] ) . '" '; echo 'value="' . esc_attr( $data ) . '" '; break; case 'checkbox': echo 'type="checkbox" '; if ( 'on' === $data ) { echo 'checked="checked" '; } break; } echo '>' . PHP_EOL; if ( ! $post ) { echo '' . PHP_EOL; } } /** * Given an array of CSS class names ['foo', 'bar'] echo class="foo bar". * * If the array is empty just echo a space. * * @param array $classes * * @return void */ private function echo_classes( array $classes ) { if ( count( $classes ) > 0 ) { echo 'class="'; echo implode( ' ', array_map( static function ( $class ) { return esc_attr( $class ); }, $classes ) ); echo '"'; } echo ' '; } /** * Save metabox fields. * * @param integer $post_id Post ID. * * @return void */ public function save_meta_boxes( $post_id = 0 ) { if ( ! $post_id ) { return; } $post_type = get_post_type( $post_id ); $fields = apply_filters( $post_type . '_custom_fields', array(), $post_type ); if ( ! is_array( $fields ) || 0 === count( $fields ) ) { return; } foreach ( $fields as $field ) { if ( isset( $_REQUEST[ $field['id'] ] ) ) { update_post_meta( $post_id, $field['id'], $this->sanitize_field( $_REQUEST[ $field['id'] ], $field['type'] ) ); } else { update_post_meta( $post_id, $field['id'], '' ); } } } /** * Sanitize form field * * @param string $data Submitted value. * @param string $type Type of field to sanitize. * * @return string Sanitized value */ public function sanitize_field( $data = '', $type = 'text' ) { switch ( $type ) { case 'text': $data = sanitize_text_field( $data ); break; case 'url': $data = sanitize_url( $data ); break; case 'email': $data = sanitize_email( $data ); break; default: $data = sanitize_key ($data); break; } return $data; } }