Simplified endpoints

[JakNowy]

Pull Request Template for FastCRUD

Description

This PR implements https://github.com/igorbenav/fastcrud/issues/67. It covers 2 issues:

1. It provides support for passing empty endpoint_names to fastcrud.crud_router() without redundant // in generated paths

   endpoint_names = {
   "create": "",
   "read": "",
   "update": "",
   "delete": "",
   "db_delete": "",
   "read_multi": "",
   "read_paginated": "get_paginated",
   }

2. It mixes existing _read_paginated endpoint logic into _read_items. Now "page" and "items_per_page" query parameters can be passed to _read_paginated resulting in same behavour. I also confirmed that old-style request for _read_items persist it's functinality. Default:

  'http://localhost:8000/users/get_multi?offset=0&limit=100' \
  -H 'accept: application/json'

works for both and new _read_items.

3. Appropriate warning have been added as needed.

4. I've added small update to advanced filters AND clauses documentation.

Tests

Describe the tests you added or modified to cover your changes, if applicable.

Checklist

• [x] I have read the CONTRIBUTING document.
• [x] My code follows the code style of this project.
• [x] I have added necessary documentation (if appropriate).
• [x] I have added tests that cover my changes (if applicable).
• [x] All new and existing tests passed.

Additional Notes

Include any additional information that you think is important for reviewers to know.

[JakNowy]

@igorbenav are you ok with this direction? Ultimately I would love to see plain endpoints the default behaviour, as well as read_paginated dropped and mixed into read_items. But those changes are breaking, so the question arises are you planning any major breaking release soon or should I just keep the changes minimalistic for now?

[igorbenav]

If we really use the simplified as the default, the changes are breaking in nature. I believe the best approach for the first version of this is:

• making it possible to pass empty endpoint_names to fastcrud.crud_router()
• warning that the simplified will be the standard for the next version when someone uses it without specifying endpoint_names
• warning that in the next version _read_paginated and _read_items will be unified whenever people create a router with _read_paginated in it

[igorbenav]

Then, after this, we may merge a fully breaking version without the warnings. Let's say 0.14.x has this warnings, 0.15.0 implements the breaking changes

[JakNowy]

@igorbenav feel free to review!

[igorbenav]

Other than the warning, I think it's just missing the pagination stuff and the deprecation warnings in the docs here and it's good to go

[igorbenav]

Nice one, @JakNowy, thanks!