Add mutation to delete an Author and all of its books

Syemon commented 3 years ago

Summary of change

Added mutation which allows delete author with its books (only if there are no relations with other authors left). I had to delete V010__RENAME_PUBLISHER_BOOK_CONSTRAINTS.sql during development.

Related issue

Closes #90

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knjk04 commented 3 years ago

@Syemon Thanks for making the changes. It looks like the build is failing: https://github.com/Project-Books/books-api/pull/112/checks?check_run_id=3713998068#step:6:1693. Could you please take a look into this?

Syemon commented 3 years ago

@Syemon Thanks for making the changes. It looks like the build is failing: https://github.com/Project-Books/books-api/pull/112/checks?check_run_id=3713998068#step:6:1693. Could you please take a look into this?

There were issues with dependencies. I have updated my branch to the newest changes.