add post meta front end edit

This code should be conditional first and then form output since you can’t use wp_redirect after headers are set and you are updating so use update_post_meta instead of add_post_meta.

Try:

    if( 'POST' == $_SERVER['REQUEST_METHOD'] && !empty( $_POST['action'] ) &&  $_POST['action'] == "edit_post" && isset($_POST['pid'])) {
    $the_post = get_post($_POST['pid']); 


    $the_post = array(); 
    $the_post['post_content'] = $_POST['description'];
    $the_post['data'] = array($_POST['data']);

    $pid = wp_update_post($the_post); 
    update_post_meta($pid, 'rating', $the_post['data'], true);

    $link = get_permalink( $pid );
    wp_redirect($link);
}

<!-- edit Post Form -->
    <div id="postbox">
        <form id="edit_post" name="edit_post" method="post" action="">
        <p><label for="description">Description</label><br />
            <textarea id="description" name="description" ><?php echo $post_to_edit->post_content; ?></textarea>
        </p>
        <!-- wine Rating -->
        <fieldset class="data">
                  <label for="data">data</label>
                  <input type="text" value="" id="data" size="60" tabindex="20" name="data"><?php echo (!empty($val = get_post_meta($post_to_edit->ID,'rating',true))) ? $val : ''; ?></textarea>
        </fieldset>

        <p align="right"><input type="submit" value="Edit" tabindex="6" id="submit" name="submit" /></p>
        <input type="hidden" name="action" value="edit_post" />
        <input type="hidden" name="pid" value="<?php echo $post_to_edit->ID; ?>" />
        <?php wp_nonce_field( 'edit-post' ); ?>
        </form>
    </div>

Related Posts:

  1. post formats – how to switch meta boxes when changing format?
  2. Adding an assisting editor box to Post page
  3. Consolidate Metaboxes into 1 Big Metabox
  4. Metabox Data not being saved [closed]
  5. Options to get my custom post type metadata via the WordPress API
  6. Update post meta in woocommerce order frontend
  7. Editing does not change post_name
  8. Mass removing CSS from 1,700 post [closed]
  9. Add box with custom per-page properties
  10. I can not display meta value in extras.php and template-tags.php
  11. After updating the custom post type, metafields disappear from the post.php edit menu, how do I fix it?
  12. Add post meta data date to event
  13. Check if any meta on the post has value then display content
  14. If I disable screen options, does WP still try to update post meta?
  15. Get or set values in post meta
  16. I created a Custom Meta Box but it is not displaying the value on my post page
  17. update_post_meta() throws Uncaught error: Cannot create duplicate attribute
  18. add_post_meta not saved
  19. Remove action of an external plugin after checking if custom post meta is set
  20. How we insert values into database using metabox WordPress?
  21. Post meta box data not saving
  22. How can I get the post ID from a WP_Query loop?
  23. How to edit a post meta data in a Gutenberg Block?
  24. get registered metaboxes by post type or post ID
  25. How to update/delete array in post meta value?
  26. Add a meta description to home page?
  27. How do I retrieve multi-dimensional arrays from the wp_postmeta table, & display on a website?
  28. adding a URL to a post meta
  29. How can I include meta box content when searching?
  30. Adding meta data to an attachment post
  31. Problem With Order Item Meta In Woocommerce
  32. Is it possible to update a post meta field through REST API if the format of it when registered is nested?
  33. How can I display my custom metaboxes on a custom post template?
  34. Best way to save postmeta
  35. How to add meta data to WordPress posts?
  36. How to update Post Meta values through the comment system
  37. Filtering multiple meta_values
  38. How add post_meta from user_meta?
  39. How can I get my iFrame to work with url from post_meta?
  40. Where is the key _wp_page_template passed?
  41. How to use update_post_meta() function properly?
  42. How do I dynamically call a page/post author into the meta data?
  43. Set Condition echo function get_post_meta
  44. Compare old meta with new post meta
  45. Button inside Custom Meta Box triggering the Update Button
  46. Show Custom Post Type meta boxes only on Page Edit
  47. Read post meta values, only if posts are public
  48. Meta Data for Custom Post Type not saving
  49. Time & Date on Post – Time Ago Custom Function
  50. How to remove Date from Meta Description on SERP?
  51. Help with Post Meta
  52. why after saving meta value it’s saving all the values the one that i clicked?
  53. How add multiple wp_editor_box to new post
  54. How do I manage custom meta in post revisions in the Block Editor era?
  55. Generate metadata for cloud images
  56. Migrating meta value to new meta value
  57. Insert multiple metas in one time
  58. How to extract data from a post meta
  59. count post meta values
  60. How can I tell if a post has been published at least once?
  61. Correct meta of Writing Meta Tags
  62. Get post_meta from specific post [closed]
  63. Save Metabox Custom Field Value
  64. How to add tags to post from frontend?
  65. Adding a meta box to determine the sidebar [closed]
  66. Retrieve user_meta and copy to post_meta
  67. How to retrive Custom Post Type Meta Fields in Custom WP_Query
  68. put saved metabox values back into fields and then display on the front end
  69. remove a single post_meta
  70. Empty meta-box returns publishdate if no value is set?
  71. getting the post_id from the post_meta
  72. Custom Meta Box with variable number of fields
  73. How to query and update one colum in postmeta table?
  74. post meta – problem : copy the same meta for all the articles
  75. How to remove date from showing in meta description
  76. How to save HTML data into SQL post_content column
  77. update post meta value with other post meta value
  78. Custom Post Type meta data getting deleted on bulk editing taxonomies
  79. Check For get_post_meta on Author Archive Page
  80. Negative meta_query if storing multiple post_meta values with shared meta_key
  81. What format is this and how to get value “lal” and “pila” from it
  82. Frontend query and does not need to log in [closed]
  83. Get data from custom table and update relative post_meta based on meta_key
  84. How to save a meta_value as a numeric value after I retrieve it via update_post_meta?
  85. Update Post Meta in Front End with a form
  86. Programatically delete several attributes in _product_attributes in post meta
  87. Saving Child Terms on front end not setting parent
  88. Get post meta after insert post
  89. Data not displaying in text field
  90. WP-API + JS Backbone client – how to update post meta
  91. Delete custom post type metadata without deleting the post in admin area
  92. Display Data From This Custom Media Upload Meta Box?
  93. Proper Way to Sanitize Meta Input
  94. update_post_meta returning false when called during init
  95. update_post_meta does not work
  96. when saveing $meta_box i get Undefined index error
  97. Cache metadata for set of posts
  98. Problem with get_post_meta
  99. get_post_meta() returns nothing in save_post, publish_post, wp_after_insert_post
  100. CPT posts in drop downed in meta box on page doesn’t return post ID
techhipbettruvabetnorabahisbahis forumutaraftarium24eduseduedusedueduseduseduedusedusedu