Linked Questions
12 questions linked to/from How to hook update_post_meta and delete_post_meta?
4
votes
1
answer
14k
views
Can't get post ID in functions.php?
I need the current post id in a function , which I have written in functions.php. But I can't get the id. I have tried several method.
Like
get_the_ID(); //returns false
global $post;
$id = $...
- 138
8
votes
3
answers
3k
views
New image size version only for the Featured Image file
I'm worried about too many files created when adding a new image size.
All uploaded files will generate the new size, I need a specific image size only for the file set as Fetured image, is there ...
- 1,218
3
votes
2
answers
4k
views
Is there a hook / action that is triggered when adding or removing a post thumbnail?
I'm trying to update a custom field after a post thumbnail (Featured Image) is either added or removed from a post. The aim of this is to keep track of whether a featured image has been added or ...
- 1,076
0
votes
1
answer
6k
views
is there an update_post_meta action
Are there any actions I can hook into for update_post_meta()? I don't see anything obvious in the source. Woocommerce lets you change the featured status of items via ajax from the edit screen. I ...
- 14.1k
1
vote
2
answers
4k
views
Filter For Featured Image
Is there a filter for when a Featured Image is set/unset or changed.
I need to delete transient data when the above occurs.
- 143
1
vote
2
answers
1k
views
Determine when a custom field was last updated?
Would anyone know of a way to determine when a custom field for a post was last updated?
I'm trying to write something that says "If CUSTOMFIELD was updated in the last 24 hours don't do anything, ...
- 392
-1
votes
2
answers
2k
views
How can I add a custom meta value on file upload?
I am looking for an option where a custom meta value will be saved when user uploads an attachment.
Lets say I need a meta key _example_meta_key and want to save meta value of this as ex087659bh (It ...
1
vote
0
answers
2k
views
Compare meta_query with a Regular Expression and do a less-than operation on it
I have the problem that my client is using a theme which stores options of items
in a serialized way in the post_meta table.
I already found out that this is not the best way to save values ...
- 278
0
votes
1
answer
828
views
A faster way to query custom post types with multiple conditions?
I am using a lot of custom post types (CPTs) with custom meta and so far I have been using queries like the below, to get for example all events in CountryX that happened in 2014:
<?php
global $...
- 11
2
votes
1
answer
620
views
Automatically Add Specified Value to Attachment Metadata upon Upload
I am trying to create a function that automatically adds a value to the attachment metadata (if it matters, on Audio uploads).
For example, I want to add a value of 'artist' and output it as my own ...
- 424
0
votes
1
answer
156
views
Can I use pre_get_posts to add up values from two different meta_keys?
I'm storing post meta values _likes and _dislikes in postmeta. In some cases, I want to be able to query for posts by their netto score (likes minus dislikes) and order them by it.
I'm familiar with ...
- 1,052
0
votes
0
answers
89
views
How to track product price changes?
I am writing an API plugin. Every time a product or quantity changes in woocommerce, I need to export a new price to the server.
Also in the IPA there is import, which I will conduct through cron.
...
