Why do I need to register my custom post type a second time when flushing rewrite rules?

When a plugin is activated, the only thing that runs on that activation request is the activation hook. whatever you’ve got hooked to init has not and will not run on that request, so you need to register it in your activation before you flush rewrites. it’s only after the plugin is activated, on the next request, that the init action fires for that plugin.

Related Posts:

  1. Can a custom post type have a Parent Page?
  2. Where, When, & How to Properly Flush Rewrite Rules Within the Scope of a Plugin?
  3. Marking future dated post as published
  4. Custom Post Type Permalink / Rewrite not working immediately
  5. CPT Template Not Showing – Getting 404
  6. add_rewrite_endpoint() not working for custom post type archives
  7. Adding meta values to permalink
  8. When we register a custom taxonomy or post type, does the WP database modified at all?
  9. Permalinks so that one custom post type appears to be a child of another, not working
  10. How to achieve this permalink -> category-name/custom-post-type-name/post-name
  11. WordPress Custom Post Type Category Page
  12. How to Add Pages Under Custom Post Type URL Structure?
  13. Prepend meta_value to permalink of post
  14. How to check if last uri segment is a custom post type or taxonomy term?
  15. Pagination Doesn’t Work
  16. Rewrite custom post type url’s adding meta box values
  17. Multiple parameters in a custom post type url rewrite
  18. WP Rewrite Rules – Custom post type & taxonomy
  19. Need help with complex custom post type setup
  20. WordPress monthly archive links result in 404
  21. Remove base slug in CPT & CT, use CT in permalink
  22. Rewrite rules for custom post type ‘attached’ to another custom post type
  23. single-{post_type}.php is not loaded despite flushing rules
  24. Custom Permalink Tag breaks Pagination
  25. how to get archive urls with same origin for custom types and terms?
  26. Rewrite numeric ID parameter for hierarchical custom post type
  27. Best action hook to create custom post and assign taxonomy terms to it on plugin activation?
  28. add_rewrite_endpoint() and Custom Post Type Archive
  29. Pagination problem
  30. Custom post type with slug for plural (archive) and for single
  31. add_rewrite_rule and how to get the custom post into the worpress loop the correct way
  32. Permalink Structure CPT With Custom Taxonomy Fails
  33. Rewrite WordPress URL to show CPT meta field data
  34. Custom Post Type won’t Register
  35. Making a custom help center page
  36. Custom rewrite rule for hierarchical custom post type
  37. Rewrite and custom post type: order by custom field not working
  38. Am I using the flush_rewrite_rules function in the right place?
  39. How can I use get_post_meta with add_rewrite_rule to build custom permalinks?
  40. Adding Post id to the end of slug in a Custom Post Type
  41. Can’t get custom rewrite tag, query var, permastruct (permalink structure), and rewrite rule to work properly together
  42. Customize Custom Post Type URL
  43. Custom taxonomy rewrite with query var returns %2F in URL
  44. cpt and page sharing same base permalink
  45. Hide or disallow default custom post type url?
  46. A case for Hierarchical Custom Posts
  47. Rewrite CPT child page URL to support query var
  48. Permalink structure with custom taxonomies and custom post type like /parent-tax/child-tax/custom-post-type-name (with no base name)
  49. Flush Rewrite Rules when new site is created on network
  50. Pretty URLs and custom post types
  51. Specific routing for CPT
  52. Best structure / rewrite rules to achieve the following url
  53. Relationship between set rewrite flag in register_post_type and add_rewrite_rule
  54. Custom Rewrite Rule for Custom Post Type with URL Param
  55. WordPress custom slug rewrite
  56. Custom post type paging 404 error
  57. Custom Post Type posts, conflict with posts after add_rewrite_rule to top
  58. Combine multiple CPT names to create valid permalinks
  59. Custom Post Type – Rewite Archive page
  60. How to rewrite custom taxonomy term archive to use THE SAME SLUG/front as CPT
  61. How to rewrite the post slug of a custom post type post
  62. rewriterule not working
  63. Custom post types and custom variables — add_rewrite_tag() not working
  64. Add Custom Values to Permalinks Through Custom Fields and Posts
  65. Custom post rewrite rule not working
  66. Rewrite rules for custom post type
  67. Custom taxonomy and post type rewrite rules
  68. WordPress rewrite rule doesn’t work unless post category is explicitly called in regex
  69. Url Rewriting a dynamic wordpress page with parameters
  70. How to make a post accessible from multiple post type slugs?
  71. Custom Post Type add_rewrite_rule
  72. Sudden 404 pages on product category archives
  73. Change CPT permalink to use the category
  74. add_rewrite_rule wordpress ignoring url pattern, wp rewrite not working
  75. Redirect Custom Post Type from Child Taxonomies
  76. Pagination URL in Custom Content Type
  77. Custom post type rewrite and wp_pagenavi interfering with each other
  78. Custom taxonomy archive slug overwrites static page
  79. Group based routing and administration
  80. Adding Custom Taxonomy Along-with Post Name in Post Type Permalink
  81. redirect old post type url to new structure url
  82. Multiple Custom Post Type permalink issue
  83. Custom Post Types and rewrite rules – One CPT works and a cloned one doesn’t
  84. Custom post type child page 404
  85. Custom post type rewrite with_front
  86. Rewrite Rule & Regex – Extract ‘cat-name’ and ‘page-number’ from http://domain.com/custom-post-type/category/cat-name/page/page-number
  87. CPT Template Not Showing – Getting 404
  88. What is the proper way implement a global $wp_rewrite?
  89. Permalink of Custom Post Type
  90. Ideal top-level slug methods
  91. 404 Error On Custom Taxonomy Pages 2, 3, etc
  92. add_rewrite_rule not working in Custom Post Type UI Plugin
  93. CPT Archive Pagination – Page not found
  94. add_rewrite_rule not working with custom post type
  95. Url rewrite with custom post type and taxonomy
  96. Paginate yearly archives for a custom post type
  97. Custom archive URL as a subfolder of the custom post type slug
  98. Two Permalinks with one Taxonomy (custom taxonomy) and (custom post type -> custom taxonomy)
  99. What is the best way to relate different custom post types?
  100. How to change rewrite slug for custom post type without conflicting w/ child pages of page with same slug