A JSON plugin for all Export from Wordpress

[Rahulsingh1939]

Context:

In the last pull request (PR), our WordPress-to-Joomla migration component was able to upload Posts and Pages into Joomla as Articles. However, this import process did not account for hierarchical structures (such as category nesting or parent-child page relationships). Additionally, I discovered a key issue post-merge: Articles depend on pre-existing Categories and Users for accurate author ID mapping and category assignment.

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Problem Details:

Upon deeper investigation and testing, I found that:

1. The built-in WordPress export tool (WXR/XML) includes:

   • Posts, Pages, Comments, Custom Fields, Categories, Tags, and Custom Post Types.
   • Only those Categories/Tags/Users associated with exported content.

2. It does not export all users — only authors tied to exported content.

3. Subcategories reference parent IDs, but those parent categories may not be included in the export if they’re not linked to any selected post/page.

   • ❗ This results in broken category hierarchies during the Joomla import.

4. This affects:

   • Author mapping (wrong user IDs or fallback to defaults).
   • Category structure integrity.
   • Content not being properly grouped under its original taxonomy.

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✅ Proposed Solution:

To resolve this , I implemented the following:

• Created a custom WordPress plugin that exports a Export JSON file:

  • Contains: All Users, Posts, Pages, Categories (with hierarchy), Tags, and optionally Custom Post Types.

• Developed a dedicated Joomla import plugin that reads this JSON file and processes:

  • Users → before content to ensure valid author IDs.
  • Categories & Tags → maintaining full parent-child structure.
  • Articles (Posts & Pages) → linked with the correct metadata and taxonomy.

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🔧 Additional Feature: Export Format Choice

Users can now have an option to choose between:

1. Native WP Export (for limited use cases or small exports).
2. Custom Full Export JSON (recommended for accurate, complete migrations).

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🧪 How to Test

1. Download and Install the WP Export Plugin from :

Download all-export.zip

2. Go to the WordPress Admin -> All Export

4. Download the .json file.

5. In Joomla:

   • Install the Component and the corresponding JSON Import Plugin.
     Component : Download component.zip
     Json Plugin : Download json.zip

   • Use the new "Import from JSON" tab and select the downloaded file.

• Click on Import Button and Wait for a while.

6. Confirm:

   • Users are created before Articles.
   • Categories retain correct hierarchy.
   • Articles have correct authors and are linked to the appropriate categories and tags.

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Looking forward to feedback on this approach.