post-meta - Read For Learn

How to store multiple input values with same meta_key

Change your form as suggested: function startdate() { global $post; $custom = get_post_custom($post->ID); echo “<label>Startdates</label><br/>”; for ($i=0; $i<count($custom[“startdate”]);$i++) { echo “<input type=\”text\” name=\”startdate[“.$i.”]\” value=\””.$custom[“startdate”][$i].”\” />”; } } You’ll have to remove and reinstate your individual postmeta entries: add_action(‘save_post’, ‘save_details’); function save_details($post_id) { if ($parent_id = wp_is_post_revision($post_id)) $post_id = $parent_id; if (!empty($_POST[‘startdate’]) && is_array($_POST[‘startdate’])) { delete_post_meta($post_id, … Read more

update_post_meta not adding anything.(Nor add_post_meta)

Found the solution in this post: update_post_meta and update_field ony working when saving the post The solution is to use update_field because update_post_meta uses a different method to update fields than ACF does. Do note that this is the correct order of using the code update_field($meta_key, $meta_value, $post_ID);.

Add a post meta key and value only if it does not exist on the post

It looks like you need to use update_post_meta() https://codex.wordpress.org/Function_Reference/update_post_meta Source: WP Codex The function update_post_meta() updates the value of an existing meta key (custom field) for the specified post. This may be used in place of add_post_meta() function. The first thing this function will do is make sure that $meta_key already exists on $post_id. If … Read more

Does WP get all post_meta on POST page?

One call to get_post_meta() fetches all met keys and values for that post. All these values are then stored in the cache. The next call will just fetch the data from the cache. So you can safely call that function multiple times. In details: get_post_meta() calls get_metadata(‘post’, $post_id, $key, $single); get_metadata() checks the cache and … Read more

How to get custom field image url of specific size

The get_post_meta() function can help to get the meta field but will not retrieve different size. Assuming _pf_photo1 embed the attachment id, you can do something like that: // Note the “_id” suffix $attachment_id = get_post_meta($post->ID, ‘_pf_photo1_id’, true); Last parameter for this function can not be ‘medium’, Now,you can use $attachment_id with different function depending … Read more

Adding meta data to an attachment post

So since attachments are post types, you should be able to assign them postmeta like any other post type. Using the update_post_meta function should get you where you need to be. update_post_meta( $attachment_id, ‘price’, $price ); http://codex.wordpress.org/Function_Reference/update_post_meta Then run your query based on a meta key. $args = array( ‘order’ => ‘ASC’, ‘post_type’ => ‘attachment’, … Read more

get_post_custom()

What qualifies as custom field? Yes, a custom field is equal to post metadata, but be aware that some metadata is only for internal use (usually prepended with an underscore, for example _edit_lock. A more detailed look at the function The function get_post_custom() is actually just a wrapper for get_post_meta(): (wp-includes/post.php line 1764), but with … Read more

Triple meta_key on custom SELECT query

Your Query is incorrect. To retrive meta values for triple meta_key you will need 3 different joins using posts meta on posts table. Check code below: // Example value $user_id = 1; // Calculate average post rating for user $ratings_query = $wpdb->get_results( $wpdb->prepare(” SELECT pmeta.meta_value FROM wp_posts LEFT JOIN $wpdb->postmeta AS pmeta ON (pmeta.post_id = … Read more

Using Advanced Custom Field (ACF) to insert meta description on each page

As mentioned in the comments, you are outside of the loop, so get_field will not know the ID. You can use the code below: <?php $meta_description = get_field(‘meta_description’, get_queried_object_id()); if(empty($meta_description)) { $meta_description = ‘This could be an interesting meta description’; } ?> <meta name=”description” content=”<?php echo $meta_description; ?> “/> If you use var_dump() in the … Read more

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