I want to echo something after header tag in single pages.
I have a filter to add something before content.
function add_custom_meta_to_content($content) {
$queried_object = get_queried_object();
if ( $queried_object ) {
$post_id = $queried_object->ID;
}
$text = get_post_meta($post_id, 'textbox_wporg_meta_key', true);
if( is_single() ) {
$content = $text . '' . $content;
}
return $content;
}
add_filter( 'the_content','add_custom_meta_to_content' );
But Now I want add some data exactly after header tag in single pages by my plugin.
I don't want to edit theme codes.
How can I do that?
You wouldn't normally do this with the the_content filter. Almost all commercial themes would have a specific hook to insert additional code after the post title and before the main content. For instance, the Generatepress framework would enable you to hook into the generate_after_entry_title action hook and you would output additional code there.
I am using the below function to change the page title in wordpress. It is working on a single page (page.php), but is not working on my static home page or individual posts (single.php).
What do I need to change in order to make this work across the entire site?
<?php
function wpse46249_filter_wp_title( $title ) {
$some_custom_title_content = 'This is added to title';
$custom_title = $title . $some_custom_title_content;
return $custom_title;
}
add_filter( 'wp_title', 'wpse46249_filter_wp_title' );
?>
function wpse46249_filter_wp_title( $title ) {
$some_custom_title_content = 'This is added to title';
$custom_title = $title . $some_custom_title_content;
return $custom_title;
}
add_filter( 'the_title', 'wpse46249_filter_wp_title' );
please note the title is saved in wp_posts table. The filter you used above will change all new posts titles being saved. This filter just modifys the title after pulling it from the db and doesn't actually change the db value.
Also will only work on pages where the_title() is called.
I have a page with several subpages in wordpress. The page should display the same content as the second subpage. When I edit the page, there is an option to copy the content from the subpage into it, but then I would have to maintain two instances of the text. Is there a possibility to map existing page content into a page? I'm using Wordpress.com so I cannot edit any files/links on the server.
You could use a shortcode that fetches the content of a page specified. In functions.php:
add_action( 'init', 'so20477735_init', 11 );
function so20477735_init()
{
add_shortcode( 'duplicate_page', 'so20477735_shortcode_callback' );
}
function so20477735_shortcode_callback( $atts, $content = null )
{
extract( shortcode_atts( array(
'page_id' => 0
), $atts ) );
$page_data = get_page( $page_id );
$return = '';
if( ! is_null( $page_data ) )
$return .= $page_data->post_content;
return $return;
}
Example usage:
[duplicate_page page_id="12"]
EDIT
I missed the fact you're using wp.com. You should be able to do something similar with the display posts shortcode:
http://en.support.wordpress.com/display-posts-shortcode/
I am using the FeedWordPress plugin http://wordpress.org/extend/plugins/feedwordpress/ to pull posts from one site to another.
I have written a filter that after some help from Stack users successfully scans the $content and extracts the image URL into $new_content
define('FWPASTOPC_AUTHOR_NAME', 'radgeek');
add_filter(
/*hook=*/ 'syndicated_item_content',
/*function=*/ 'fwp_add_source_to_content',
/*order=*/ 10,
/*arguments=*/ 2
);
function fwp_add_source_to_content ($content, $post) {
// Use SyndicatedPost::author() to get author
// data in a convenient array
$content = $post->content();
// Authored by someone else
if( preg_match( '/<img[^>]+src\s*=\s*["\']?([^"\' ]+)[^>]*>/', $content, $matches ) ) {
$new_content .= 'URL IS '.$matches[0].'';
return $new_content;
}
else
{
}
}
What I wanted to do now was save this URL into a custom field instead of just returning it. Has anyone achieved anything similar?
So as I understand it, the plugin grabs content from external RSS feeds and creates them as posts in your website.
If this is the case, using your filter you should be able to grab the post ID within the $post variable.
So all you need is the add_post_meta() function to add a custom field to the specific post.
So including your code above it should look something like:
define('FWPASTOPC_AUTHOR_NAME', 'radgeek');
add_filter(
/*hook=*/ 'syndicated_item_content',
/*function=*/ 'fwp_add_source_to_content',
/*order=*/ 10,
/*arguments=*/ 2
);
function fwp_add_source_to_content ($content, $post) {
// Use SyndicatedPost::author() to get author
// data in a convenient array
$content = $post->content();
// Authored by someone else
if( preg_match( '/<img[^>]+src\s*=\s*["\']?([^"\' ]+)[^>]*>/', $content, $matches ) ) {
$new_content .= 'URL IS '.$matches[0].'';
//Add custom field with author info to post
add_post_meta($post->ID, 'post_author', $new_content);
return $new_content;
}
}
I have a page which has a slideshow at the top, and images inserted inline into the content area.
I need to exclude the images that have been inserted into the post from the slideshow.
Currently I am excluding the 'Featured Image', but this limits me to one image that can be inserted into the post.
Here is my existing code:
$thumbnail = get_post_thumbnail_id();
$images = get_children( 'post_type=attachment&post_mime_type=image&order=asc&orderby=menu_order&post_parent='.$post->ID .'&exclude='.$thumbnail);
Previously I have used the description field of the image meta data to exclude images by entering 'exclude'. This isn't as nice for the end user as I'd like it to be.
Any suggestions, plugins or code based!
Update:
I've updated the code, so now I get any image URLs from the post_content and check them against the slideshow images.
$content = $post->post_content;
$inlineImages = array();
preg_match( '/src="([^"]*)"/i', $content, $inlineImages ) ;
$thumbnail = get_post_thumbnail_id($post->ID);
$images = get_children( 'post_type=attachment&post_mime_type=image&order=asc&orderby=menu_order&post_parent='.$post->ID .'&exclude='.$thumbnail);
if ($images) {
echo '<div id="slideshow">';
foreach ( $images as $attachment_id => $attachment ) {
$image = wp_get_attachment_image_src( $attachment_id,array(900,265));
if (!in_array($image[0],$inlineImages)) {
echo '<img src="'.$image[0].'" width="'. $image[1] .'" height="'. $image[2].'">';
}
}
echo '</div>';
}
This is an OK solution, although the regex could be improved.
A nicer step would be to add the array of images to a custom field field, which
is updated on post / page update or publish.
Any suggestions on how to go about this?
Just needed to do the same thing. Your original approach is the way I wanted to do it -- simply exclude any images that had been inserted into the post from appearing in the slider. But I didn't want the client to have to do anything special to make it happen. Here's my code.
$args = array( 'post_type' => 'attachment', 'post_mime_type'=>'image','numberposts' => -1, 'post_status' => null, 'post_parent' => $post->ID );
$attachments = get_posts($args);
preg_match_all("/<img[^']*?src=\"([^']*?)\"[^']*?>/", $post->post_content, $matches, PREG_PATTERN_ORDER);
/* $matches[1] holds the urls as an array */
foreach ( $attachments as $attachment ) {
if(in_array($attachment->guid, $matches[1])){ continue;}
wp_get_attachment_image( $attachment->ID , 'slider_size');
}
First bit gets all of the images associated with the post. The $preg_match_all gets all of the images in the post body. Then as we loop through the images to display them in the slider the in_array checks the urls of the images that were inserted with the url of the image about to be added to the slider and skips on to the next one if there is a match.
Thanks for you post, got me thinking in the right direction.
I've updated the code, so now I get any image URLs from the post_content and check them against the slideshow images.
$content = $post->post_content;
$inlineImages = array();
preg_match( '/src="([^"]*)"/i', $content, $inlineImages ) ;
$thumbnail = get_post_thumbnail_id($post->ID);
$images = get_children( 'post_type=attachment&post_mime_type=image&order=asc&orderby=menu_order&post_parent='.$post->ID .'&exclude='.$thumbnail);
if ($images) {
echo '<div id="slideshow">';
foreach ( $images as $attachment_id => $attachment ) {
$image = wp_get_attachment_image_src( $attachment_id,array(900,265));
if (!in_array($image[0],$inlineImages)) {
echo '<img src="'.$image[0].'" width="'. $image[1] .'" height="'. $image[2].'">';
}
}
echo '</div>';
}
I think the easiest thing to do would be using the Meteor Slideshow plugin to create a slideshow for each page, then insert the shortcode for the proper slideshow in the content area of the proper page. Yes, it means you'll have to edit each page "outside" the page editor, but it also gives you easy, complete control over which photos do and do not appear in each slideshow, and the shortcode is very easy to put in with the page editor.
The Media Custom Fields plugin lets you add custom data to media items exactly as you would with custom post fields, providing a user-friendly way of flagging slideshow-only images. From the plugin FAQ:
In addition to giving you the option to add custom fields, your custom fields will show up in all appropriate places. If you go to the media section to manage your media like you usually do, they will show up on the edit media form. The custom fields also show up when you are uploading an image to a post, and in all other expected locations.
One approach is to install this plugin and add a custom field such as Slide with value TRUE to your slide images via the Dashboard -> Media menu. Then your filter code might be:
$thumbnail = get_post_thumbnail_id();
$images = get_children( /* removed for brevity */ );
if ($images) {
// ..
foreach ( $images as $attachment_id => $attachment ) {
// skip images not marked for slideshow
if ( !get_post_meta($attachment_id, 'Slide') ) continue;
// otherwise do slideshow things
}
// ..
}
Note that with this approach the value for Slide can be set to anything except the empty string. You may want to define Slide as a class constant somewhere to avoid hard-coding.
Advantages
Doesn't require any work on the poster's part
Future-proof: the plugin appears to be based on good-old post functionality, and attachments are just one kind of post anyway, so there's nothing weird.
Here is another approach to this.
I would not prefer using urls, because the picture inserted inside the content area could be of different size like medium, thumbnail or full. So, the url only would not match.
Using the above code,
function printMeImages() {
$content = $post->post_content;
$inlineImages = array();
// populate ids of images from wp-image-id
preg_match_all( '/wp-image-([^"]*)"/i', $content, $inlineImages ) ;
$thumbnail = get_post_thumbnail_id($post->ID);
$images = get_children( 'post_type=attachment&post_mime_type=image&order=asc&orderby=menu_order&post_parent='.$post->ID .'&exclude='.$thumbnail);
$out = "";
if ($images) {
$out .= '<ul id="slideshow">';
foreach ( $images as $attachment_id => $attachment ) {
$image = wp_get_attachment_image_src( $attachment_id,'desiredImageSize');
// $inlineImages[1] has ids to be discarded
if (!in_array($attachment_id,$inlineImages[1])) {
$out .= '<li><img src="'.$image[0].'" width="'. $image[1] .'" height="'. $image[2].'"></li>';
}
}
$out .= '</ul>';
}
return $out;
}
The images which are not set as featured and not used inside the post are retrieved.
For performance reasons I would not execute the code while the page is being rendered, but rather bind the code to the save_post hook. When the post content is edited and saved, the hook will be called and all attached images (or their ids) which are not used in the content are saved into a postmeta table. When the slider is rendered the image ids can be accessed via get_post_meta($post_id, 'image_ids_for_slider').
Like this I can avoid to do the preg_match_all operation on page rendering. This might not be a performance reason when the post content is small and when there's only one slider loaded, but generally I find this a approach a little cleaner for scaling reasons.
//hook this function to save post action
function save_ids_of_image_attachments_not_used_in_the_content( $post_id, $post ) {
$args = array( 'post_type' => 'attachment',
'post_mime_type'=>'image',
'numberposts' => -1,
'post_status' => null,
'post_parent' => $post_id
);
$attachments = get_posts($args);
preg_match_all("/<img[^']*?src=\"([^']*?)\"[^']*?>/", $post->post_content, $matches, PREG_PATTERN_ORDER);
$ids_of_attached_images_not_in_content = array();
/* $matches[1] holds the urls as an array */
foreach ( $attachments as $attachment ) {
if(in_array($attachment->guid, $matches[1])){
continue;
}
$ids_of_attached_images_not_in_content[] = $attachment->ID;
}
// save the image_ids as postmeta
update_post_meta($post_id, 'image_ids_for_slider', $ids_of_attached_images_not_in_content);
}
add_action( 'save_post', 'save_ids_of_image_attachments_not_used_in_the_content', 10, 2 );
I haven't fully understood your problem, but how about excluding the div ID within which the slideshow is present?
$thumbnail = get_post_thumbnail_id();
$images = get_children('post_type=attachment&post_mime_type=image&order=asc&orderby=menu_order&post_parent='.$post->ID .'&exclude='.$thumbnail. '&NAME');
Replace 'NAME' after thumbnail.' in the parenthesis.
Hope this helps.