How do you show media posted by a certain user ? Wordpress - wordpress

How do you show media posted by a certain user in Wordpress?
Say I have the loop...
and im using get_the_author_meta() to retrieve user inf
Now I want to show all the images a certain user has uploaded.
Have no idea where to begin.
Just want to show a list of images that one user has uploaded.

A very common code to allow users to see ONLY their own attachments in the upload page is :
add_action('pre_get_posts','users_attachments');
function users_attachments( $wp_query_obj ) {
global $current_user, $pagenow;
if( !is_a( $current_user, 'WP_User') )
return;
if( 'upload.php' != $pagenow )
return;
if( !current_user_can('delete_pages') )
$wp_query_obj->set('author', $current_user->id );
return;
}
So based on this, and removing the conditionals you do not need - you could try :
add_action('pre_get_posts','users_attachments');
function users_attachments( $wp_query_obj ) {
$wp_query_obj->set('author', '30' ); // ID of user , or any other meta..
return;
}
or Filter the Query for example :
function user_files_only( $wp_query ) {
global $current_user;
$wp_query->set( 'author', '30' ); // ID of user , or any other meta..
}
add_filter('parse_query', 'user_files_only' );
Both examples actually alter the main query in some way , so you might want to remove the action after applying it . Not sure how this will work on the loop.

You could use the pre_get_posts Filter and to filter the query..

Give a tag as user x for a certain user who posts his media in different categories, now it is easy if anyone press that tag then all the media uploaded by a particular user gets displayed one by one.(i mean that you must use tags for all the posts of the user-x by giving the same tag for all his uploaded media )

Related

How do we get admin current screen by post id instead of screen id?

I need to add css on one single admin page which has post=183 .. Here id is 183.. The below code will work for all the pages but in my case I just want this to have effect in single page. So the best thing will have to be through page/post_id.
function this_screen() {
$current_screen = get_current_screen();
if(( $current_screen ->id === "page") ) {
wp_enqueue_style(
'gp_fp',
get_template_directory_uri() . '/admin/css/block.css');
}
}
Appreciate help.
I would check that:
Current page is admin (so it won't affect the front-end)
Current page is post ID = 183
$post_id = 183;
if (is_admin() && get_post_status($post_id) === false) {
// do something
}
Reference: https://tommcfarlin.com/wordpress-post-exists-by-id/

How to hide advanced custom fields(ACF) in the WP-admin UI?

Check the screenshot below; all I want to do is to hide certain ACF fields for custom users in the wordpress backend.
As of ACF 5.0.0 there is an easier way to do this without having to output CSS. If you use the acf/prepare_field hook and return false the field will not render.
<?php
function so37111468_hide_field( $field ) {
// hide the field if the current user is not able to save options within the admin
if ( ! current_user_can( 'manage_options' ) ) {
return false;
}
return $field;
}
add_filter( 'acf/prepare_field/key=MYFIELDKEY', 'so37111468_hide_field' );
?>
The documentation for that filter can be found here: https://www.advancedcustomfields.com/resources/acf-prepare_field/
If you mean to hide it with CSS, then you should insert custom CSS to admin footer area.
For example, you can add such kind of code to your theme's functions.php file:
add_action('admin_footer', 'my_admin_hide_cf');
function my_admin_hide_cf() {
$u=wp_get_current_user();
$user_roles = $u->roles;
if ($user_roles[0]=='CUSTOM_USER_ROLE_NAME'){
echo '
<style>
#acf-FIELD_SLUG_HERE {display:none}
</style>';
}
}
And of course you should replace FIELD_SLUG_HERE and CUSTOM_USER_ROLE_NAME values with correct ones.
F.e. #acf-FIELD_SLUG_HERE can be #acf-url, CUSTOM_USER_ROLE_NAME can be "contributor".

Show only user-created taxonomy entries

iam implementing an event system on wordpress which allows an restricted user the following:
Create a new organizer (custom-post-type)
Create an event (custom-post-type)
Creating an event the user should choose an organizer for a special event by a list. Therefore i handle the organizer cpt as a taxonomy inside the event cpt.
Now my question is:
How can i only show the organizers, which this specific user has created? I face the problem, that all existing events are shown on every event for every user.
If you need any code or screenshots let me know, thank you very much in advance!
Solved it with Advanced Custom Fields plugin (Relationship Field). It is possible to relate cpts into another cpt. I learned to NOT use a cpt as a taxonomy.
Approach for filtering only user created posts
You can achieve it by adding the following code to your functions.php file
function posts_for_current_author($query) {
global $pagenow;
if( 'edit.php' != $pagenow || !$query->is_admin )
return $query;
if( !current_user_can( 'edit_others_posts' ) ) {
global $user_ID;
$query->set('author', $user_ID );
}
return $query;
}
add_filter('pre_get_posts', 'posts_for_current_author');

How to hide media uploads by other users in the Media manager

i am using wordpress multisite and wan to hide medea which others have uploaded. Like if X User of that site have uploaded any media in the wordpress, Y User should not be able to see or access this from there login. Please help
You could try something like this.
/**
* Allow access to own content only
*/
function my_authored_content($query) {
//get current user info to see if they are allowed to access ANY posts and pages
$current_user = wp_get_current_user();
// set current user to $is_user
$is_user = $current_user->user_login;
//if is admin or 'is_user' does not equal #username
if (!current_user_can('manage_options')){
//if in the admin panel
if($query->is_admin) {
global $user_ID;
$query->set('author', $user_ID);
}
return $query;
}
return $query;
}
add_filter('pre_get_posts', 'my_authored_content');
This will only let admin and the author see the content.
You can either add it to the main functions file or turn it into a plugin.
To create it as a plugin:
Create a new file
add the code from here: http://pastebin.com/rfMLM0BU
save it as my-authored-content.php
upload it to your plugins directory.
Hope this helps you! :-)
For me works this:
function mymo_parse_query_useronly( $wp_query ) {
if(isset($wp_query->query_vars['post_type']) && $wp_query->query_vars['post_type'] == 'attachment'){
if ( !current_user_can( 'level_5' ) ) {
$wp_query->set( 'author', get_current_user_id() );
}
}
}
add_filter('parse_query', 'mymo_parse_query_useronly' );
I use this for uploaded profile picture for the user profile in front end

Exclude specific post from WP-feed

I know that you can generate a feed using urls like: ?cat=3&feed=rss2
And you can switch it around to exclude the category 3 by putting a subtract sign in front: ?cat=-3&feed=rss2
But, it doesn't look like you can do the same for posts? I'm using the JW video Player and have loaded the related plugin. The related plugin can take an rss-feed (media rss) as the parameter so it can link to other videos/wordpress posts that are related.
My problem is that currently this means that the active video also appears in the related videos feed.
What would be the best solution for solving this problem? I aim to create my own rss feed generator in the future, but for now I just want to keep it simple and use the generated feeds that wordpress creates. Is there a simple way to add support for an url parameter named post for example? It could then take post=-7 to exclude post with id 7 from displaying in the feed.
Or is there better solutions for this?
You can use a function
function exclude_category($query){
if ( $query->is_home || $query->is_feed || $query->is_archive ) {
$query->set('cat', '-1');
}
return $query;
}
add_filter('pre_get_posts', 'exclude_category');
see'a
Instead of explaining the mechanisem - there are many plugins just for that ..
One that I know is :
StelthPubish
Edit I
I do not know about the URL - but you can try use the
function ok9_feed_filter($query) {
if ( !$query->is_admin && $query->is_feed) {
$query->set('post__not_in', array(15, 6) ); // page /post id
}
return $query;
}
add_filter( 'pre_get_posts', 'ok9_exclude_filter' );
or this
function ok9_feed_exlude($where, $wp_query = NULL) {
global $wpdb;
if ( !$wp_query )
global $wp_query;
if ($wp_query->is_feed) {
// exclude post id
$where .= " AND $wpdb->posts.ID NOT IN (15, 6)";
}
return $where;
}
add_filter( 'posts_where','ok9_feed_exlude', 1, 2 );
If you do not want to use a fixed id in the function - you can always add a custom field in the posts you want to exclude , and use that in the query ..

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