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post.php
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<?php
/**
* WordPress Post Administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Rename $_POST data from form names to DB post columns.
*
* Manipulates $_POST directly.
*
* @since 2.6.0
*
* @param bool $update Are we updating a pre-existing post?
* @param array $post_data Array of post data. Defaults to the contents of $_POST.
* @return object|bool WP_Error on failure, true on success.
*/
function _wp_translate_postdata( $update = false, $post_data = null ) {
if ( empty( $post_data ) ) {
$post_data = &$_POST;
}
if ( $update ) {
$post_data['ID'] = (int) $post_data['post_ID'];
}
$ptype = get_post_type_object( $post_data['post_type'] );
if ( $update && ! current_user_can( 'edit_post', $post_data['ID'] ) ) {
if ( 'page' == $post_data['post_type'] ) {
return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
} else {
return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to edit posts as this user.' ) );
}
} elseif ( ! $update && ! current_user_can( $ptype->cap->create_posts ) ) {
if ( 'page' == $post_data['post_type'] ) {
return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to create pages as this user.' ) );
} else {
return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to create posts as this user.' ) );
}
}
if ( isset( $post_data['content'] ) ) {
$post_data['post_content'] = $post_data['content'];
}
if ( isset( $post_data['excerpt'] ) ) {
$post_data['post_excerpt'] = $post_data['excerpt'];
}
if ( isset( $post_data['parent_id'] ) ) {
$post_data['post_parent'] = (int) $post_data['parent_id'];
}
if ( isset( $post_data['trackback_url'] ) ) {
$post_data['to_ping'] = $post_data['trackback_url'];
}
$post_data['user_ID'] = get_current_user_id();
if ( ! empty( $post_data['post_author_override'] ) ) {
$post_data['post_author'] = (int) $post_data['post_author_override'];
} else {
if ( ! empty( $post_data['post_author'] ) ) {
$post_data['post_author'] = (int) $post_data['post_author'];
} else {
$post_data['post_author'] = (int) $post_data['user_ID'];
}
}
if ( isset( $post_data['user_ID'] ) && ( $post_data['post_author'] != $post_data['user_ID'] )
&& ! current_user_can( $ptype->cap->edit_others_posts ) ) {
if ( $update ) {
if ( 'page' == $post_data['post_type'] ) {
return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
} else {
return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to edit posts as this user.' ) );
}
} else {
if ( 'page' == $post_data['post_type'] ) {
return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to create pages as this user.' ) );
} else {
return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to create posts as this user.' ) );
}
}
}
if ( ! empty( $post_data['post_status'] ) ) {
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
// No longer an auto-draft
if ( 'auto-draft' === $post_data['post_status'] ) {
$post_data['post_status'] = 'draft';
}
if ( ! get_post_status_object( $post_data['post_status'] ) ) {
unset( $post_data['post_status'] );
}
}
// What to do based on which button they pressed
if ( isset( $post_data['saveasdraft'] ) && '' != $post_data['saveasdraft'] ) {
$post_data['post_status'] = 'draft';
}
if ( isset( $post_data['saveasprivate'] ) && '' != $post_data['saveasprivate'] ) {
$post_data['post_status'] = 'private';
}
if ( isset( $post_data['publish'] ) && ( '' != $post_data['publish'] ) && ( ! isset( $post_data['post_status'] ) || $post_data['post_status'] != 'private' ) ) {
$post_data['post_status'] = 'publish';
}
if ( isset( $post_data['advanced'] ) && '' != $post_data['advanced'] ) {
$post_data['post_status'] = 'draft';
}
if ( isset( $post_data['pending'] ) && '' != $post_data['pending'] ) {
$post_data['post_status'] = 'pending';
}
if ( isset( $post_data['ID'] ) ) {
$post_id = $post_data['ID'];
} else {
$post_id = false;
}
$previous_status = $post_id ? get_post_field( 'post_status', $post_id ) : false;
if ( isset( $post_data['post_status'] ) && 'private' == $post_data['post_status'] && ! current_user_can( $ptype->cap->publish_posts ) ) {
$post_data['post_status'] = $previous_status ? $previous_status : 'pending';
}
$published_statuses = array( 'publish', 'future' );
// Posts 'submitted for approval' present are submitted to $_POST the same as if they were being published.
// Change status from 'publish' to 'pending' if user lacks permissions to publish or to resave published posts.
if ( isset( $post_data['post_status'] ) && ( in_array( $post_data['post_status'], $published_statuses ) && ! current_user_can( $ptype->cap->publish_posts ) ) ) {
if ( ! in_array( $previous_status, $published_statuses ) || ! current_user_can( 'edit_post', $post_id ) ) {
$post_data['post_status'] = 'pending';
}
}
if ( ! isset( $post_data['post_status'] ) ) {
$post_data['post_status'] = 'auto-draft' === $previous_status ? 'draft' : $previous_status;
}
if ( isset( $post_data['post_password'] ) && ! current_user_can( $ptype->cap->publish_posts ) ) {
unset( $post_data['post_password'] );
}
if ( ! isset( $post_data['comment_status'] ) ) {
$post_data['comment_status'] = 'closed';
}
if ( ! isset( $post_data['ping_status'] ) ) {
$post_data['ping_status'] = 'closed';
}
foreach ( array( 'aa', 'mm', 'jj', 'hh', 'mn' ) as $timeunit ) {
if ( ! empty( $post_data[ 'hidden_' . $timeunit ] ) && $post_data[ 'hidden_' . $timeunit ] != $post_data[ $timeunit ] ) {
$post_data['edit_date'] = '1';
break;
}
}
if ( ! empty( $post_data['edit_date'] ) ) {
$aa = $post_data['aa'];
$mm = $post_data['mm'];
$jj = $post_data['jj'];
$hh = $post_data['hh'];
$mn = $post_data['mn'];
$ss = $post_data['ss'];
$aa = ( $aa <= 0 ) ? gmdate( 'Y' ) : $aa;
$mm = ( $mm <= 0 ) ? gmdate( 'n' ) : $mm;
$jj = ( $jj > 31 ) ? 31 : $jj;
$jj = ( $jj <= 0 ) ? gmdate( 'j' ) : $jj;
$hh = ( $hh > 23 ) ? $hh - 24 : $hh;
$mn = ( $mn > 59 ) ? $mn - 60 : $mn;
$ss = ( $ss > 59 ) ? $ss - 60 : $ss;
$post_data['post_date'] = sprintf( '%04d-%02d-%02d %02d:%02d:%02d', $aa, $mm, $jj, $hh, $mn, $ss );
$valid_date = wp_checkdate( $mm, $jj, $aa, $post_data['post_date'] );
if ( ! $valid_date ) {
return new WP_Error( 'invalid_date', __( 'Invalid date.' ) );
}
$post_data['post_date_gmt'] = get_gmt_from_date( $post_data['post_date'] );
}
if ( isset( $post_data['post_category'] ) ) {
$category_object = get_taxonomy( 'category' );
if ( ! current_user_can( $category_object->cap->assign_terms ) ) {
unset( $post_data['post_category'] );
}
}
return $post_data;
}
/**
* Returns only allowed post data fields
*
* @since 5.0.1
*
* @param array $post_data Array of post data. Defaults to the contents of $_POST.
* @return object|bool WP_Error on failure, true on success.
*/
function _wp_get_allowed_postdata( $post_data = null ) {
if ( empty( $post_data ) ) {
$post_data = $_POST;
}
// Pass through errors
if ( is_wp_error( $post_data ) ) {
return $post_data;
}
return array_diff_key( $post_data, array_flip( array( 'meta_input', 'file', 'guid' ) ) );
}
/**
* Update an existing post with values provided in $_POST.
*
* @since 1.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $post_data Optional.
* @return int Post ID.
*/
function edit_post( $post_data = null ) {
global $wpdb;
if ( empty( $post_data ) ) {
$post_data = &$_POST;
}
// Clear out any data in internal vars.
unset( $post_data['filter'] );
$post_ID = (int) $post_data['post_ID'];
$post = get_post( $post_ID );
$post_data['post_type'] = $post->post_type;
$post_data['post_mime_type'] = $post->post_mime_type;
if ( ! empty( $post_data['post_status'] ) ) {
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
if ( 'inherit' == $post_data['post_status'] ) {
unset( $post_data['post_status'] );
}
}
$ptype = get_post_type_object( $post_data['post_type'] );
if ( ! current_user_can( 'edit_post', $post_ID ) ) {
if ( 'page' == $post_data['post_type'] ) {
wp_die( __( 'Sorry, you are not allowed to edit this page.' ) );
} else {
wp_die( __( 'Sorry, you are not allowed to edit this post.' ) );
}
}
if ( post_type_supports( $ptype->name, 'revisions' ) ) {
$revisions = wp_get_post_revisions(
$post_ID,
array(
'order' => 'ASC',
'posts_per_page' => 1,
)
);
$revision = current( $revisions );
// Check if the revisions have been upgraded
if ( $revisions && _wp_get_post_revision_version( $revision ) < 1 ) {
_wp_upgrade_revisions_of_post( $post, wp_get_post_revisions( $post_ID ) );
}
}
if ( isset( $post_data['visibility'] ) ) {
switch ( $post_data['visibility'] ) {
case 'public':
$post_data['post_password'] = '';
break;
case 'password':
unset( $post_data['sticky'] );
break;
case 'private':
$post_data['post_status'] = 'private';
$post_data['post_password'] = '';
unset( $post_data['sticky'] );
break;
}
}
$post_data = _wp_translate_postdata( true, $post_data );
if ( is_wp_error( $post_data ) ) {
wp_die( $post_data->get_error_message() );
}
$translated = _wp_get_allowed_postdata( $post_data );
// Post Formats
if ( isset( $post_data['post_format'] ) ) {
set_post_format( $post_ID, $post_data['post_format'] );
}
$format_meta_urls = array( 'url', 'link_url', 'quote_source_url' );
foreach ( $format_meta_urls as $format_meta_url ) {
$keyed = '_format_' . $format_meta_url;
if ( isset( $post_data[ $keyed ] ) ) {
update_post_meta( $post_ID, $keyed, wp_slash( esc_url_raw( wp_unslash( $post_data[ $keyed ] ) ) ) );
}
}
$format_keys = array( 'quote', 'quote_source_name', 'image', 'gallery', 'audio_embed', 'video_embed' );
foreach ( $format_keys as $key ) {
$keyed = '_format_' . $key;
if ( isset( $post_data[ $keyed ] ) ) {
if ( current_user_can( 'unfiltered_html' ) ) {
update_post_meta( $post_ID, $keyed, $post_data[ $keyed ] );
} else {
update_post_meta( $post_ID, $keyed, wp_filter_post_kses( $post_data[ $keyed ] ) );
}
}
}
if ( 'attachment' === $post_data['post_type'] && preg_match( '#^(audio|video)/#', $post_data['post_mime_type'] ) ) {
$id3data = wp_get_attachment_metadata( $post_ID );
if ( ! is_array( $id3data ) ) {
$id3data = array();
}
foreach ( wp_get_attachment_id3_keys( $post, 'edit' ) as $key => $label ) {
if ( isset( $post_data[ 'id3_' . $key ] ) ) {
$id3data[ $key ] = sanitize_text_field( wp_unslash( $post_data[ 'id3_' . $key ] ) );
}
}
wp_update_attachment_metadata( $post_ID, $id3data );
}
// Meta Stuff
if ( isset( $post_data['meta'] ) && $post_data['meta'] ) {
foreach ( $post_data['meta'] as $key => $value ) {
$meta = get_post_meta_by_id( $key );
if ( ! $meta ) {
continue;
}
if ( $meta->post_id != $post_ID ) {
continue;
}
if ( is_protected_meta( $meta->meta_key, 'post' ) || ! current_user_can( 'edit_post_meta', $post_ID, $meta->meta_key ) ) {
continue;
}
if ( is_protected_meta( $value['key'], 'post' ) || ! current_user_can( 'edit_post_meta', $post_ID, $value['key'] ) ) {
continue;
}
update_meta( $key, $value['key'], $value['value'] );
}
}
if ( isset( $post_data['deletemeta'] ) && $post_data['deletemeta'] ) {
foreach ( $post_data['deletemeta'] as $key => $value ) {
$meta = get_post_meta_by_id( $key );
if ( ! $meta ) {
continue;
}
if ( $meta->post_id != $post_ID ) {
continue;
}
if ( is_protected_meta( $meta->meta_key, 'post' ) || ! current_user_can( 'delete_post_meta', $post_ID, $meta->meta_key ) ) {
continue;
}
delete_meta( $key );
}
}
// Attachment stuff
if ( 'attachment' == $post_data['post_type'] ) {
if ( isset( $post_data['_wp_attachment_image_alt'] ) ) {
$image_alt = wp_unslash( $post_data['_wp_attachment_image_alt'] );
if ( $image_alt != get_post_meta( $post_ID, '_wp_attachment_image_alt', true ) ) {
$image_alt = wp_strip_all_tags( $image_alt, true );
// update_meta expects slashed.
update_post_meta( $post_ID, '_wp_attachment_image_alt', wp_slash( $image_alt ) );
}
}
$attachment_data = isset( $post_data['attachments'][ $post_ID ] ) ? $post_data['attachments'][ $post_ID ] : array();
/** This filter is documented in wp-admin/includes/media.php */
$translated = apply_filters( 'attachment_fields_to_save', $translated, $attachment_data );
}
// Convert taxonomy input to term IDs, to avoid ambiguity.
if ( isset( $post_data['tax_input'] ) ) {
foreach ( (array) $post_data['tax_input'] as $taxonomy => $terms ) {
$tax_object = get_taxonomy( $taxonomy );
if ( $tax_object && isset( $tax_object->meta_box_sanitize_cb ) ) {
$translated['tax_input'][ $taxonomy ] = call_user_func_array( $tax_object->meta_box_sanitize_cb, array( $taxonomy, $terms ) );
}
}
}
add_meta( $post_ID );
update_post_meta( $post_ID, '_edit_last', get_current_user_id() );
$success = wp_update_post( $translated );
// If the save failed, see if we can sanity check the main fields and try again
if ( ! $success && is_callable( array( $wpdb, 'strip_invalid_text_for_column' ) ) ) {
$fields = array( 'post_title', 'post_content', 'post_excerpt' );
foreach ( $fields as $field ) {
if ( isset( $translated[ $field ] ) ) {
$translated[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->posts, $field, $translated[ $field ] );
}
}
wp_update_post( $translated );
}
// Now that we have an ID we can fix any attachment anchor hrefs
_fix_attachment_links( $post_ID );
wp_set_post_lock( $post_ID );
if ( current_user_can( $ptype->cap->edit_others_posts ) && current_user_can( $ptype->cap->publish_posts ) ) {
if ( ! empty( $post_data['sticky'] ) ) {
stick_post( $post_ID );
} else {
unstick_post( $post_ID );
}
}
return $post_ID;
}
/**
* Process the post data for the bulk editing of posts.
*
* Updates all bulk edited posts/pages, adding (but not removing) tags and
* categories. Skips pages when they would be their own parent or child.
*
* @since 2.7.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $post_data Optional, the array of post data to process if not provided will use $_POST superglobal.
* @return array
*/
function bulk_edit_posts( $post_data = null ) {
global $wpdb;
if ( empty( $post_data ) ) {
$post_data = &$_POST;
}
if ( isset( $post_data['post_type'] ) ) {
$ptype = get_post_type_object( $post_data['post_type'] );
} else {
$ptype = get_post_type_object( 'post' );
}
if ( ! current_user_can( $ptype->cap->edit_posts ) ) {
if ( 'page' == $ptype->name ) {
wp_die( __( 'Sorry, you are not allowed to edit pages.' ) );
} else {
wp_die( __( 'Sorry, you are not allowed to edit posts.' ) );
}
}
if ( -1 == $post_data['_status'] ) {
$post_data['post_status'] = null;
unset( $post_data['post_status'] );
} else {
$post_data['post_status'] = $post_data['_status'];
}
unset( $post_data['_status'] );
if ( ! empty( $post_data['post_status'] ) ) {
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
if ( 'inherit' == $post_data['post_status'] ) {
unset( $post_data['post_status'] );
}
}
$post_IDs = array_map( 'intval', (array) $post_data['post'] );
$reset = array(
'post_author',
'post_status',
'post_password',
'post_parent',
'page_template',
'comment_status',
'ping_status',
'keep_private',
'tax_input',
'post_category',
'sticky',
'post_format',
);
foreach ( $reset as $field ) {
if ( isset( $post_data[ $field ] ) && ( '' == $post_data[ $field ] || -1 == $post_data[ $field ] ) ) {
unset( $post_data[ $field ] );
}
}
if ( isset( $post_data['post_category'] ) ) {
if ( is_array( $post_data['post_category'] ) && ! empty( $post_data['post_category'] ) ) {
$new_cats = array_map( 'absint', $post_data['post_category'] );
} else {
unset( $post_data['post_category'] );
}
}
$tax_input = array();
if ( isset( $post_data['tax_input'] ) ) {
foreach ( $post_data['tax_input'] as $tax_name => $terms ) {
if ( empty( $terms ) ) {
continue;
}
if ( is_taxonomy_hierarchical( $tax_name ) ) {
$tax_input[ $tax_name ] = array_map( 'absint', $terms );
} else {
$comma = _x( ',', 'tag delimiter' );
if ( ',' !== $comma ) {
$terms = str_replace( $comma, ',', $terms );
}
$tax_input[ $tax_name ] = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
}
}
}
if ( isset( $post_data['post_parent'] ) && (int) $post_data['post_parent'] ) {
$parent = (int) $post_data['post_parent'];
$pages = $wpdb->get_results( "SELECT ID, post_parent FROM $wpdb->posts WHERE post_type = 'page'" );
$children = array();
for ( $i = 0; $i < 50 && $parent > 0; $i++ ) {
$children[] = $parent;
foreach ( $pages as $page ) {
if ( $page->ID == $parent ) {
$parent = $page->post_parent;
break;
}
}
}
}
$updated = array();
$skipped = array();
$locked = array();
$shared_post_data = $post_data;
foreach ( $post_IDs as $post_ID ) {
// Start with fresh post data with each iteration.
$post_data = $shared_post_data;
$post_type_object = get_post_type_object( get_post_type( $post_ID ) );
if ( ! isset( $post_type_object ) || ( isset( $children ) && in_array( $post_ID, $children ) ) || ! current_user_can( 'edit_post', $post_ID ) ) {
$skipped[] = $post_ID;
continue;
}
if ( wp_check_post_lock( $post_ID ) ) {
$locked[] = $post_ID;
continue;
}
$post = get_post( $post_ID );
$tax_names = get_object_taxonomies( $post );
foreach ( $tax_names as $tax_name ) {
$taxonomy_obj = get_taxonomy( $tax_name );
if ( isset( $tax_input[ $tax_name ] ) && current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
$new_terms = $tax_input[ $tax_name ];
} else {
$new_terms = array();
}
if ( $taxonomy_obj->hierarchical ) {
$current_terms = (array) wp_get_object_terms( $post_ID, $tax_name, array( 'fields' => 'ids' ) );
} else {
$current_terms = (array) wp_get_object_terms( $post_ID, $tax_name, array( 'fields' => 'names' ) );
}
$post_data['tax_input'][ $tax_name ] = array_merge( $current_terms, $new_terms );
}
if ( isset( $new_cats ) && in_array( 'category', $tax_names ) ) {
$cats = (array) wp_get_post_categories( $post_ID );
$post_data['post_category'] = array_unique( array_merge( $cats, $new_cats ) );
unset( $post_data['tax_input']['category'] );
}
$post_data['post_ID'] = $post_ID;
$post_data['post_type'] = $post->post_type;
$post_data['post_mime_type'] = $post->post_mime_type;
foreach ( array( 'comment_status', 'ping_status', 'post_author' ) as $field ) {
if ( ! isset( $post_data[ $field ] ) ) {
$post_data[ $field ] = $post->$field;
}
}
$post_data = _wp_translate_postdata( true, $post_data );
if ( is_wp_error( $post_data ) ) {
$skipped[] = $post_ID;
continue;
}
$post_data = _wp_get_allowed_postdata( $post_data );
if ( isset( $shared_post_data['post_format'] ) ) {
set_post_format( $post_ID, $shared_post_data['post_format'] );
}
// Prevent wp_insert_post() from overwriting post format with the old data.
unset( $post_data['tax_input']['post_format'] );
$updated[] = wp_update_post( $post_data );
if ( isset( $post_data['sticky'] ) && current_user_can( $ptype->cap->edit_others_posts ) ) {
if ( 'sticky' == $post_data['sticky'] ) {
stick_post( $post_ID );
} else {
unstick_post( $post_ID );
}
}
}
return array(
'updated' => $updated,
'skipped' => $skipped,
'locked' => $locked,
);
}
/**
* Default post information to use when populating the "Write Post" form.
*
* @since 2.0.0
*
* @param string $post_type Optional. A post type string. Default 'post'.
* @param bool $create_in_db Optional. Whether to insert the post into database. Default false.
* @return WP_Post Post object containing all the default post data as attributes
*/
function get_default_post_to_edit( $post_type = 'post', $create_in_db = false ) {
$post_title = '';
if ( ! empty( $_REQUEST['post_title'] ) ) {
$post_title = esc_html( wp_unslash( $_REQUEST['post_title'] ) );
}
$post_content = '';
if ( ! empty( $_REQUEST['content'] ) ) {
$post_content = esc_html( wp_unslash( $_REQUEST['content'] ) );
}
$post_excerpt = '';
if ( ! empty( $_REQUEST['excerpt'] ) ) {
$post_excerpt = esc_html( wp_unslash( $_REQUEST['excerpt'] ) );
}
if ( $create_in_db ) {
$post_id = wp_insert_post(
array(
'post_title' => __( 'Auto Draft' ),
'post_type' => $post_type,
'post_status' => 'auto-draft',
)
);
$post = get_post( $post_id );
if ( current_theme_supports( 'post-formats' ) && post_type_supports( $post->post_type, 'post-formats' ) && get_option( 'default_post_format' ) ) {
set_post_format( $post, get_option( 'default_post_format' ) );
}
// Schedule auto-draft cleanup
if ( ! wp_next_scheduled( 'wp_scheduled_auto_draft_delete' ) ) {
wp_schedule_event( time(), 'daily', 'wp_scheduled_auto_draft_delete' );
}
} else {
$post = new stdClass;
$post->ID = 0;
$post->post_author = '';
$post->post_date = '';
$post->post_date_gmt = '';
$post->post_password = '';
$post->post_name = '';
$post->post_type = $post_type;
$post->post_status = 'draft';
$post->to_ping = '';
$post->pinged = '';
$post->comment_status = get_default_comment_status( $post_type );
$post->ping_status = get_default_comment_status( $post_type, 'pingback' );
$post->post_pingback = get_option( 'default_pingback_flag' );
$post->post_category = get_option( 'default_category' );
$post->page_template = 'default';
$post->post_parent = 0;
$post->menu_order = 0;
$post = new WP_Post( $post );
}
/**
* Filters the default post content initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_content Default post content.
* @param WP_Post $post Post object.
*/
$post->post_content = (string) apply_filters( 'default_content', $post_content, $post );
/**
* Filters the default post title initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_title Default post title.
* @param WP_Post $post Post object.
*/
$post->post_title = (string) apply_filters( 'default_title', $post_title, $post );
/**
* Filters the default post excerpt initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_excerpt Default post excerpt.
* @param WP_Post $post Post object.
*/
$post->post_excerpt = (string) apply_filters( 'default_excerpt', $post_excerpt, $post );
return $post;
}
/**
* Determines if a post exists based on title, content, date and type.
*
* @since 2.0.0
* @since 5.2.0 Added the `$type` parameter.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $title Post title.
* @param string $content Optional post content.
* @param string $date Optional post date.
* @param string $type Optional post type.
* @return int Post ID if post exists, 0 otherwise.
*/
function post_exists( $title, $content = '', $date = '', $type = '' ) {
global $wpdb;
$post_title = wp_unslash( sanitize_post_field( 'post_title', $title, 0, 'db' ) );
$post_content = wp_unslash( sanitize_post_field( 'post_content', $content, 0, 'db' ) );
$post_date = wp_unslash( sanitize_post_field( 'post_date', $date, 0, 'db' ) );
$post_type = wp_unslash( sanitize_post_field( 'post_type', $type, 0, 'db' ) );
$query = "SELECT ID FROM $wpdb->posts WHERE 1=1";
$args = array();
if ( ! empty( $date ) ) {
$query .= ' AND post_date = %s';
$args[] = $post_date;
}
if ( ! empty( $title ) ) {
$query .= ' AND post_title = %s';
$args[] = $post_title;
}
if ( ! empty( $content ) ) {
$query .= ' AND post_content = %s';
$args[] = $post_content;
}
if ( ! empty( $type ) ) {
$query .= ' AND post_type = %s';
$args[] = $post_type;
}
if ( ! empty( $args ) ) {
return (int) $wpdb->get_var( $wpdb->prepare( $query, $args ) );
}
return 0;
}
/**
* Creates a new post from the "Write Post" form using $_POST information.
*
* @since 2.1.0
*
* @global WP_User $current_user
*
* @return int|WP_Error
*/
function wp_write_post() {
if ( isset( $_POST['post_type'] ) ) {
$ptype = get_post_type_object( $_POST['post_type'] );
} else {
$ptype = get_post_type_object( 'post' );
}
if ( ! current_user_can( $ptype->cap->edit_posts ) ) {
if ( 'page' == $ptype->name ) {
return new WP_Error( 'edit_pages', __( 'Sorry, you are not allowed to create pages on this site.' ) );
} else {
return new WP_Error( 'edit_posts', __( 'Sorry, you are not allowed to create posts or drafts on this site.' ) );
}
}
$_POST['post_mime_type'] = '';
// Clear out any data in internal vars.
unset( $_POST['filter'] );
// Edit don't write if we have a post id.
if ( isset( $_POST['post_ID'] ) ) {
return edit_post();
}
if ( isset( $_POST['visibility'] ) ) {
switch ( $_POST['visibility'] ) {
case 'public':
$_POST['post_password'] = '';
break;
case 'password':
unset( $_POST['sticky'] );
break;
case 'private':
$_POST['post_status'] = 'private';
$_POST['post_password'] = '';
unset( $_POST['sticky'] );
break;
}
}
$translated = _wp_translate_postdata( false );
if ( is_wp_error( $translated ) ) {
return $translated;
}
$translated = _wp_get_allowed_postdata( $translated );
// Create the post.
$post_ID = wp_insert_post( $translated );
if ( is_wp_error( $post_ID ) ) {
return $post_ID;
}
if ( empty( $post_ID ) ) {
return 0;
}
add_meta( $post_ID );
add_post_meta( $post_ID, '_edit_last', $GLOBALS['current_user']->ID );
// Now that we have an ID we can fix any attachment anchor hrefs
_fix_attachment_links( $post_ID );
wp_set_post_lock( $post_ID );
return $post_ID;
}
/**
* Calls wp_write_post() and handles the errors.
*
* @since 2.0.0
*
* @return int|null
*/
function write_post() {
$result = wp_write_post();
if ( is_wp_error( $result ) ) {
wp_die( $result->get_error_message() );
} else {
return $result;
}
}
//
// Post Meta
//
/**
* Add post meta data defined in $_POST superglobal for post with given ID.
*
* @since 1.2.0
*
* @param int $post_ID
* @return int|bool
*/
function add_meta( $post_ID ) {
$post_ID = (int) $post_ID;
$metakeyselect = isset( $_POST['metakeyselect'] ) ? wp_unslash( trim( $_POST['metakeyselect'] ) ) : '';
$metakeyinput = isset( $_POST['metakeyinput'] ) ? wp_unslash( trim( $_POST['metakeyinput'] ) ) : '';
$metavalue = isset( $_POST['metavalue'] ) ? $_POST['metavalue'] : '';
if ( is_string( $metavalue ) ) {
$metavalue = trim( $metavalue );
}
if ( ( ( '#NONE#' != $metakeyselect ) && ! empty( $metakeyselect ) ) || ! empty( $metakeyinput ) ) {
/*
* We have a key/value pair. If both the select and the input
* for the key have data, the input takes precedence.
*/
if ( '#NONE#' != $metakeyselect ) {
$metakey = $metakeyselect;
}
if ( $metakeyinput ) {
$metakey = $metakeyinput; // default
}
if ( is_protected_meta( $metakey, 'post' ) || ! current_user_can( 'add_post_meta', $post_ID, $metakey ) ) {
return false;
}
$metakey = wp_slash( $metakey );
return add_post_meta( $post_ID, $metakey, $metavalue );
}
return false;
} // add_meta
/**
* Delete post meta data by meta ID.
*
* @since 1.2.0
*
* @param int $mid
* @return bool
*/
function delete_meta( $mid ) {
return delete_metadata_by_mid( 'post', $mid );
}
/**
* Get a list of previously defined keys.
*
* @since 1.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @return mixed
*/
function get_meta_keys() {
global $wpdb;
$keys = $wpdb->get_col(
"
SELECT meta_key
FROM $wpdb->postmeta
GROUP BY meta_key
ORDER BY meta_key"
);
return $keys;
}
/**
* Get post meta data by meta ID.
*
* @since 2.1.0
*
* @param int $mid
* @return object|bool
*/
function get_post_meta_by_id( $mid ) {
return get_metadata_by_mid( 'post', $mid );
}
/**
* Get meta data for the given post ID.
*
* @since 1.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $postid
* @return mixed
*/
function has_meta( $postid ) {
global $wpdb;
return $wpdb->get_results(
$wpdb->prepare(
"SELECT meta_key, meta_value, meta_id, post_id
FROM $wpdb->postmeta WHERE post_id = %d
ORDER BY meta_key,meta_id",
$postid
),
ARRAY_A
);
}