I want to understand plugin implementation of custom posts / taxonomies / metaboxes

Let’s start by looking at the Action Reference page in Codex: Actions Run During a Typical Request.

When a page is loaded on the front or back end, WordPress goes through the load process- loading its own code, loading plugins, the theme, calling each action in sequence.

You can see in the second and third actions where it registers the native types- post, page, etc..

The environment is built this way for each request- a post type exists for the life of a request, and disappears if the plugin that registered it is deactivated.

However, the actual data- your posts, taxonomy terms, custom field values- are all safely stored in the database. If you were to register the post type with another plugin using the same name, your post type would appear and be usable again.

So, in short, as long as a plugin adheres to the WordPress API, you aren’t in danger of losing that data

Related Posts:

  1. Advanced search form with filters for custom taxonomies and custom fields
  2. How to Add Custom Fields to a Custom Post Type?
  3. What should I use – Taxonomies, custom fields, Post Type?
  4. clients list using wordpress
  5. Custom Taxonomy Template Post List with Sort Order
  6. Creating Photo Gallery System with Custom Post Type
  7. How to do a custom bookmarks post type?
  8. WordPress Search documentation: how to improve search query using taxonomy terms, custom meta fields?
  9. How to select one major category (or custom taxonomy) for a custom post type?
  10. Automatically assign a custom post to a custom taxonomy based on custom field value
  11. Custom Taxonomy order by Custom Field
  12. front end radio custom taxonomy with custom post type
  13. Is there any performance consideration when using Custom Post Types?
  14. Custom post type / custom fields
  15. What is better: Custom Fields vs Custom Taxonomies with Terms for perfomance, scalability and better user experience
  16. How loop through posts based on custom fields
  17. How to add custom fields to admin UI and REST API response?
  18. Get Custom Field Values by Another Custom Field in WordPress
  19. Custom Posts Hierarchy? (State/City/Restaurant)
  20. Automatically populate a hierarchical taxonomy from a custom field
  21. wp_query to find posts by year and month
  22. How to bulk copy custom fields between custom posts?
  23. Retrieve value of a category’s custom field
  24. wp_query check if integer exists in custom field’s array
  25. search also in taxonomy, tags and custom fields
  26. How do I associate a custom post type with another through a taxonomy or storing an ID in a custom field?
  27. Show custom post type relationships by taxonomy
  28. Dynamic dropdown select values depending on other custom field value
  29. Hierarchy and access control for Custom Post Types (CPT)
  30. First custom field value (out of several) displayed twice after query
  31. How to display products name in a non-alphabetical order, in a custom field (taxonomy)?
  32. Show fields based on taxonomy selection in editor
  33. Permalinks: custom structure for taxonomy – tags?
  34. Custom post type’s extra fields – how to handle?
  35. Creating custom post type with custom taxonomy and custom fields programatically
  36. Targeting categories in custom fields
  37. Custom taxonomies to define versions of a product
  38. Custom Taxonomy Search result page
  39. How to get_term_meta on single custom post?
  40. Category Search / Custom Post Type search on my website. Custom Post Types that are “page-like”?
  41. Many to many to many custom post relationships
  42. Display a post from custom post type only if all the selected taxonomies and custom field value matches the record
  43. How to fetch custom post types with its full data on wordpress?
  44. Reusable metabox backend and frontend
  45. How to populate a Gravity Forms Custom Post Field (dropdown type) with custom taxonomy terms? [closed]
  46. Get custom term meta problem on single post type
  47. Custom post type name and assigning custom taxonomy
  48. Get A Custom Field From A Custom Taxonomy Of A Custom Post Type [closed]
  49. Building a Portfolio and need some direction
  50. Custom post types category
  51. Custom Taxonomy dont save in a frontend form for post a custom post
  52. How to display posttypes and taxonomy in standard posts, not in a separate label?
  53. Making a form for user to add new custom post with custom taxonomies and custom fields
  54. Should i use custom post type for a custom footer?
  55. Order custom posts by taxonomy, then by meta_key
  56. Confusion about how to use Custom Post Types, Custom Taxonomy or Category?
  57. Displaying Posts Using a Custom Query with a Custom Field and a term_id
  58. Writing a custom Glossary plugin
  59. How do I ensure that post_type and Taxonomy use the same slug?
  60. add_filter get array data before display in custom post_type
  61. Custom taxonomy terms as children of multiple custom post types
  62. ACF – Retrieve custom taxonomy from a relationship field
  63. Custom Post Type meta data getting deleted on bulk editing taxonomies
  64. Display Posts that fit a certain criteria on Category pages
  65. Display Custom Field or Custom Taxonomy in front page /post/product
  66. wp_insert_post deleting previous post custom meta
  67. PHP Warning with Custom Fields
  68. I want to create a metabox under custom taxonomy
  69. Adding a Section for Visitors
  70. Query posts by multiple custom fields
  71. Custom taxonomy template for custom fields loop [closed]
  72. Create Inclusions and exclusions
  73. What’s the most efficient way to get two queries based on an if statement?
  74. Need some suggestion/help with custom post types project
  75. Best way to use Category & Custom Fields?
  76. predefined custom field on registration page
  77. Show Custom Post Type taxonomy term that matches custom field
  78. custom taxonomies are not showing up in get_taxonomies
  79. Storing/querying custom date data
  80. Order by custom field attribute
  81. Advanced search form with filters for custom taxonomies and custom fields
  82. Custom post type and custom taxonomy archive inaccessible
  83. Custom Post type as Taxonomy
  84. How to change order of custom post types. I want Featured post to come first
  85. pre_get_posts causes Custom Posts appear under ‘Pages’ menu
  86. Custom Sort Order for Custom Post Type Taxonomy
  87. Custom post type archive with dynamic taxonomy filtering – is it possible
  88. Multiple Archive Pages for Custom Post Types AND Taxonomies
  89. Is it possible to make tag archive page specific to Custom Post Type?
  90. Multiple portfolios with one custom post type?
  91. Archive for custom taxonomy lists all posts instead of current taxonomy
  92. Querying Two Custom Post Types with OR Not Working
  93. Cache issue with WP_Query and custom field filtering
  94. How to display post from one custom post type in another custom post type with the same taxonomy?
  95. How to display list of custom post taxonomy terms and their posts (if any)?
  96. List taxonomies by post id
  97. show custom taxonomies in hierarchy
  98. Display Custom Post Type in Custom Taxonomy URL
  99. List custom taxonomy terms
  100. WP Query Conditionally query meta and taxonomy
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)