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<?php |
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/** |
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* class FooGallery_Attachment_Fields |
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* |
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* Add custom fields to media attachments |
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*/ |
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if (!class_exists('FooGallery_Attachment_Fields')) { |
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class FooGallery_Attachment_Fields { |
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function __construct() { |
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add_filter( 'attachment_fields_to_edit', array( $this, 'add_fields' ), 9, 2 ); |
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add_filter( 'attachment_fields_to_save', array( $this, 'save_fields' ), 11, 2 ); |
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} |
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public function get_custom_fields() { |
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$target_options = apply_filters( 'foogallery_attachment_field_custom_target_options', array( |
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'default' => __( 'Default', 'foogallery' ), |
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'_blank' => __( 'New tab (_blank)', 'foogallery' ), |
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'_self' => __( 'Same tab (_self)', 'foogallery' ), |
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'foobox' => __( 'FooBox', 'foogallery' ) |
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) ); |
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$fields = array( |
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'foogallery_custom_url' => array( |
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'label' => sprintf( __( '%s Custom URL', 'foogallery' ), foogallery_plugin_name() ), |
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'input' => 'text', //other types are 'textarea', 'checkbox', 'radio', 'select', |
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'helps' => __( 'Point your attachment to a custom URL', 'foogallery' ), |
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'exclusions' => array( 'audio', 'video' ), |
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), |
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'foogallery_custom_target' => array( |
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'label' => sprintf( __( '%s Custom Target', 'foogallery' ), foogallery_plugin_name() ), |
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'input' => 'select', |
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'helps' => __( 'Set a custom target for your attachment', 'foogallery' ), |
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'exclusions' => array( 'audio', 'video' ), |
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'options' => $target_options |
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) |
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); |
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return apply_filters( 'foogallery_attachment_custom_fields', $fields ); |
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} |
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/** |
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* @param $form_fields |
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* @param WP_Post $post |
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* |
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* @return mixed |
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*/ |
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public function add_fields( $form_fields, $post = null ) { |
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$custom_fields = $this->get_custom_fields(); |
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// If our fields array is not empty |
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if ( ! empty( $custom_fields ) ) { |
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// We browse our set of options |
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foreach ( $custom_fields as $field => $values ) { |
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// If the field matches the current attachment mime type |
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// and is not one of the exclusions |
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if ( !in_array( $post->post_mime_type, $values['exclusions'] ) ) { |
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// We get the already saved field meta value |
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$meta = apply_filters( 'foogallery_attachment_custom_field_value', get_post_meta( $post->ID, '_' . $field, true ), $post->ID, $field, $values ); |
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switch ( $values['input'] ) { |
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default: |
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case 'text': |
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$values['input'] = 'text'; |
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break; |
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case 'textarea': |
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$values['input'] = 'textarea'; |
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break; |
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case 'select': |
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// Select type doesn't exist, so we will create the html manually |
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// For this, we have to set the input type to 'html' |
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$values['input'] = 'html'; |
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// Create the select element with the right name (matches the one that wordpress creates for custom fields) |
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$html = '<select name="attachments[' . $post->ID . '][' . $field . ']">'; |
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// If options array is passed |
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if ( isset( $values['options'] ) ) { |
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// Browse and add the options |
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foreach ( $values['options'] as $k => $v ) { |
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// Set the option selected or not |
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if ( $meta == $k ) |
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$selected = ' selected="selected"'; |
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else |
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$selected = ''; |
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$html .= '<option' . $selected . ' value="' . $k . '">' . $v . '</option>'; |
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} |
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} |
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$html .= '</select>'; |
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// Set the html content |
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$values['html'] = $html; |
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break; |
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case 'checkbox': |
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// Checkbox type doesn't exist either |
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$values['input'] = 'html'; |
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// Set the checkbox checked or not |
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if ( $meta == 'on' ) |
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$checked = ' checked="checked"'; |
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else |
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$checked = ''; |
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$html = '<input' . $checked . ' type="checkbox" name="attachments[' . $post->ID . '][' . $field . ']" id="attachments-' . $post->ID . '-' . $field . '" />'; |
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$values['html'] = $html; |
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break; |
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case 'radio': |
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// radio type doesn't exist either |
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$values['input'] = 'html'; |
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$html = ''; |
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if ( ! empty( $values['options'] ) ) { |
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$i = 0; |
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foreach ( $values['options'] as $k => $v ) { |
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if ( $meta == $k ) |
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$checked = ' checked="checked"'; |
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else |
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$checked = ''; |
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$html .= '<input' . $checked . ' value="' . $k . '" type="radio" name="attachments[' . $post->ID . '][' . $field . ']" id="' . sanitize_key( $field . '_' . $post->ID . '_' . $i ) . '" /> <label for="' . sanitize_key( $field . '_' . $post->ID . '_' . $i ) . '">' . $v . '</label><br />'; |
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$i++; |
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} |
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} |
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$values['html'] = $html; |
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break; |
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} |
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// And set it to the field before building it |
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$values['value'] = $meta; |
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// We add our field into the $form_fields array |
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$form_fields[$field] = apply_filters( 'foogallery_attachment_field_' . $field, $values, $post->ID ); |
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} |
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} |
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} |
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// We return the completed $form_fields array |
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return apply_filters( 'foogallery_attachment_add_fields', $form_fields ); |
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} |
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function save_fields( $post, $attachment ) { |
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$custom_fields = $this->get_custom_fields(); |
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// If our fields array is not empty |
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if ( ! empty( $custom_fields ) ) { |
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// We browse our set of options |
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foreach ( $custom_fields as $field => $values ) { |
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switch ( $values['input'] ) { |
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case 'text': |
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case 'textarea': |
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case 'select': |
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case 'radio': |
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case 'checkbox': |
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// If this field has been submitted (is present in the $attachment variable) |
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if ( isset( $attachment[$field] ) ) { |
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// If submitted field is empty |
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// We add errors to the post object with the "error_text" parameter if set in the options |
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if ( strlen( trim( $attachment[$field] ) ) == 0 && isset( $values['error_text'] ) ) { |
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$post['errors'][ $field ]['errors'][] = __( $values['error_text'] ); |
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// Otherwise we update the custom field |
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} else { |
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update_post_meta( $post['ID'], '_' . $field, $attachment[ $field ] ); |
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} |
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} |
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// Otherwise, we delete it if it already existed |
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else { |
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delete_post_meta( $post['ID'], $field ); |
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} |
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break; |
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default: |
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do_action( 'foogallery_attachment_save_field_' . $values['input'], $field, $values, $post, $attachment); |
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} |
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} |
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} |
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return $post; |
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} |
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} |
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} |
fooplugins /
foogallery
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