save radio button selection in post-meta on submit

Figured it out:

update_post_meta($id, 'main_tag', $_POST['mainTagButtons'])

Easy

Related Posts:

  1. Passing error/warning messages from a meta box to “admin_notices”
  2. Metabox of one post influence setting on other
  3. unable to save post meta on single field with multiple selects
  4. Save meta data with post, Without using any plugin [closed]
  5. Editor meta box Showing but not saving
  6. Add “upload media” button in meta box field
  7. Metabox with checkbox is not updating
  8. get registered metaboxes by post type or post ID
  9. How to get meta box data to display on a page
  10. esc before saving or before displaying does it matter?
  11. Add a meta description to home page?
  12. Why can’t I hook into save_posts after admin_init?
  13. Check if meta key value already exists
  14. get_post_meta doesn’t work
  15. Save checkboxes of a metabox with a foreach loop (invalid argument)
  16. prevent post submission
  17. How to store multiple input values with same meta_key
  18. Consolidate Metaboxes into 1 Big Metabox
  19. metabox upload file
  20. Why is variable value emptry in $_POST but available in $_REQUEST?
  21. Why does get_post_meta not work with the posts page?
  22. How to get meta box values – WP tuts tutorial
  23. Change the post date from a meta box
  24. Undefined ‘post_type’ error on Add new page
  25. update_post_meta and get_post_meta not working
  26. Repeatable custom meta fields
  27. Metabox saves on Update or Publish, but not on Saving Draft
  28. how to save multiple checkboxes value in wordpress dynamically
  29. Using WYSIWYG In custom meta boxes
  30. save_post action to include wp_insert_post_data filter, gathering meta field info & prevent infinite loop
  31. Multiplicate entry on update_post_meta
  32. Meta box html is not updating after saving
  33. Getting gutenberg (WordPress 5) to save TInymce data?
  34. Undefined index error in custom post metabox
  35. Custom Meta box only returns most recent value on page
  36. How to prevent further updates of custom meta when using actions to set one meta based on another
  37. Stop saving process when metabox is invalid [duplicate]
  38. How to create a button click counter meta box?
  39. meta box & callback function
  40. $_GET & $post_ID
  41. get_post_meta as a list for drop down search filter
  42. Why does not my metabox save?
  43. How to validate select field in post meta?
  44. Migrating from metaboxes to wp_editor()
  45. Parse a text area custom meta box and assign as value to existing meta keys
  46. Getting metabox value?
  47. Hide Page Title with Post Meta
  48. How can i get multi checkboxes value in metbox?
  49. Show value of select dropdown in meta box
  50. remove a single post_meta
  51. Echo 2 values from one key in Array with get_post_custom
  52. post meta – problem : copy the same meta for all the articles
  53. Custom Meta Data is not being saved
  54. Post and Pages section inside WordPress admin are completely blank
  55. Saving multiple fields (dropdown and text) in custom metabox
  56. Update Post Meta in Front End with a form
  57. Update Post meta with custom variable
  58. get_post_meta not working on my custom-function page
  59. update_post_meta doesn’t work
  60. Custom meta box data not saving
  61. Removing Meta Generator
  62. Meta Box – Javascript Datatable
  63. Only allow one meta key value per post in a category
  64. use post meta in add_meta_boxes action
  65. Problem with ‘save_post’ hook not running
  66. A correct hook for saving meta boxes data
  67. Custom meta box not saving values of radio buttons in WordPress
  68. Can’t save drop down select date in meta boxes
  69. update_post_meta does not work
  70. add_post_meta not saved
  71. when saveing $meta_box i get Undefined index error
  72. Updating post meta and Meta Box plugin
  73. Related posts and custom meta_box?
  74. Select Options Meta Data is Not Updating in Edit Meta Box
  75. Metaboxes not saving data
  76. How to display meta box data using “Meta boxes as needed”
  77. Metadata in loops
  78. Allow iframe in custom meta box
  79. Calling Data from Custom Meta Box
  80. How can i remove blank area caused by theme’s post meta boxes?
  81. Datepicker altField and altFormat to save a new meta key/value in a post?
  82. My meta box don’t want to save value
  83. CPT posts in drop downed in meta box on page doesn’t return post ID
  84. Create more Meta Boxes as needed
  85. Set Default Admin Screen options & Metabox Order
  86. How to set default screen options?
  87. Add a Meta Box for uploading a SECOND Featured Image?
  88. Does WordPress have a “Form API”?
  89. How to HIDE everything in PUBLISH metabox except Move to Trash & PUBLISH button
  90. What is the “Advanced” $context in add_meta_box?
  91. Removing panels (meta boxes) in the Block Editor
  92. Change The Title Of a Meta Box
  93. What is the index [0] for on post meta fields?
  94. WordPress SEO by Yoast: Hide Meta Boxes in Posts for Non-admins
  95. How to make open/closed and hidden/shown metaboxes status saved on a per-post basis?
  96. How To Remove The “+ Add New Category” Link From A Category Metabox
  97. How can I create a taxonomy meta-box with search suggestions but no new terms input?
  98. Remove the Featured Image Meta Box
  99. Remove the Yoast SEO Post Metabox [closed]
  100. Best practices for meta box placement?