WordPress REST API filter on blank custom ACF

Related Posts:

1. WP Rest API: details of latest post including featured media url in one request?
2. Passing a parameter to filter and action functions
3. Get a list of all registered actions
4. How can I edit post data before it is saved?
5. How do I exclude plugins from getting automatically updated?
6. Where is the best place to use add_filter
7. Building a custom REST API
8. run silex or slim with wordpress
9. WP JSON REST API (Ryan McCue) how to query posts with specific meta data with ‘AND’ relation?
10. How to only hook on Single.php after content?
11. To Disable WordPress Rest API or Not To Disable?
12. How To Determine If A Filter Is Called In A Sidebar/Widget Context?
13. Change Page’s Tag Using functions.php File
14. What characters are allowed as a shortcode tag and how should they be sanitized?
15. How to disable Gutenberg editor?
16. Edit plugin without hooks in functions.php
17. How to create gutenberg block using REST API independently or as headless way?
18. How to remove filter added by another plugin in a class
19. Filter out results from REST API
20. How to authenticate custom API endpoint in WooCommerce [closed]
21. WordPress apply_filters() Arguments Missing
22. plugin_action_links Filter Hook Deprecated?
23. Filter Hook on plugin update
24. Using add_filter inside another class
25. WordPress pods io – Rest API for fetching fields information for custom post type
26. How can I show drafts in wp_dropdown_pages list?
27. Reduce nonce lifespan
28. How to list the Hooks and order of execution in current loading page? [duplicate]
29. Removing user contact methods works from functions.php but not from a plugin
30. Hide WordPress Plugin Deactivation Links
31. Add Products to user’s ID Woocommerce
32. Store post in raw markdown format, no html?
33. Multisite functions to communicate with individual site functions
34. Alter post slug by a filter that is fired just after a post is created
35. Use external link in the add sub menu
36. Pass A Value From Outside To A Plugin Variable
37. Is there any multiple filter/criteria plugin for wordpress? [closed]
38. Failed to invoke other hook from the init hook
39. Does the ‘nav_menu_css_class’ filter accept 2 or 3 arguments?
40. Very stubborn wp_register_script / add_action vs remove
41. How to prepend to the_title for admin-side plugin’s use
42. do_action and hook methods
43. How can I filter blog name?
44. Remove action from a plugin class, forced to use global instance
45. why does the add_action(‘the_content’) overwrite my page
46. ElasticPress how to Include Meta to the mapping?
47. remove filter which calls a public static function
48. REST-API: extend media-endpoint
49. How to filter content post only on save
50. Filter or action hook to insert content on admin pages before tag
51. There’s some way to add a wrapper around posted images?
52. Custom preview_post_link not working for draft post
53. Accessing plugin functionality within WP REST API
54. plugin_action_links_{$plugin_file} hook not in the main plugin file
55. Creating search filter through plugin
56. Woocommerce Shipping module available only for type of products [closed]
57. Add Fields with Sub-Fields to WP Job Manager
58. Determine plugin name from within plugin_action_links filter
59. merging an array to an existing array using add_filter
60. add_filter the_content in functions.php not working
61. What is the purpose of $merged_filters?
62. locate_template with multiple categories?
63. Permission Check for REST API Endpoint Runs Twice?
64. Keep user’s privileges on accessing contents in JSON response
65. Changing image URLs in media library
66. Reposition Woocommerce Message
67. How to retrieve custom meta term of category taxonomy from WP Rest API?
68. Gutenberg Blocks – Change EDIT part of the block using editor.BlockEdit filters. How to change the markup?
69. Remove caching from wp_remote_get calls from custom plugin
70. How to remove xmlns on language_attributes()?
71. WP Job Manager Category Drop-down; Change Placeholder Text Via Filter
72. Randomize attachment IDs
73. How to modify shortcode attributes with data from current post
74. add_filter comment_edit_redirect not working
75. Pass info from functions.php to plugin
76. WordPress Social Login > Post to a users Facebook wall
77. Is there a filter for get_post_custom()?
78. Can I hook into get_avatar to supply a hash instead of an email?
79. add_query_arg not working
80. Change permalink structure hidden button edit
81. I am getting error message on accessing menu-endpoint
82. When to call add_filter
83. How can I capture Memberpress user info after signup [closed]
84. Detect permalinks when passing querystring in REST API requests
85. How do action and filter hooks understand where to look for the core function that we hooked our function to them
86. Custom REST API endpoint returns rest_no_route when called via wp-json permalink
87. How to append to title via functions.php for auto-posting plugin [duplicate]
88. Edit default comments page in WP Admin
89. Inserting above the comment template
90. Creating a plugin to sanitize comment and the url field before display only
91. How to find the origin of a file upload from within wp_handle_upload?
92. Modifying the comments section through a plugin regardless of theme
93. How to save generated JWT token to cookies on login?
94. How to get the element ID from new menu list that added with add_filter()?
95. wp_get_post_terms is difference obj model than the one in rest api response
96. How to modify WCMP Rest API response?
97. White page by using filter template_include
98. How to check current user before all actions and filters?
99. How do I create a filter feature on WordPress? [closed]
100. Create a navbar filter that filters by a custom field