[Refactor] Change RecipeDetailView to display recipe slug instead of id

[bartczak-pa]

Summary

Refactor the RecipeDetailView to use slugs instead of IDs for displaying recipe details, enhancing URL readability and SEO. Update the Recipe model to include a slug field and adjust URL patterns and templates accordingly. Add tests to verify the new slug-based functionality.

New Features:

• Introduce a slug field to the Recipe model to uniquely identify recipes by a human-readable string.

Enhancements:

• Refactor RecipeDetailView to use recipe slugs instead of IDs for retrieving and displaying recipe details.
• Update the URL patterns to use slugs for accessing recipe details, improving URL readability and SEO.
• Modify the template for category recipe lists to link to recipe details using slugs.

Tests:

• Add new test cases for RecipeDetailView to ensure correct retrieval of recipes using slugs and handling of non-existent slugs.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request refactors the RecipeDetailView to use slugs instead of IDs for displaying recipe details. It enhances URL readability and SEO by introducing a slug field to the Recipe model and adjusting URL patterns and templates accordingly. The changes include updating the Recipe and Category models, modifying views, templates, and URLs, and adding new tests to verify the slug-based functionality.

File-Level Changes

Change	Details	Files
Introduce slug field to Recipe model and update Category model	Add AutoSlugField to Recipe model, populated from the title Change Category model's slug field to AutoSlugField, populated from the name Remove custom save method from Category model as it's no longer needed Add migrations for the new slug fields	recipes/models.py recipes/migrations/0002_recipe_slug.py recipes/migrations/0003_alter_recipe_slug.py recipes/migrations/0004_alter_category_slug.py
Refactor RecipeDetailView to use slugs	Update get_queryset method to filter by category slug Add select_related and prefetch_related calls for better performance Modify get_context_data method to use type hints	recipes/views.py
Update URL patterns to use slugs	Change recipe detail URL pattern to use category_slug and recipe slug instead of pk	recipes/urls.py
Update templates to use new URL structure	Modify recipe detail links in category_recipes_list.html and recipe_list.html to use new URL structure with slugs	recipes/templates/recipes/category_recipes_list.html recipes/templates/recipes/recipe_list.html
Add new tests for RecipeDetailView	Create TestRecipeDetailView class with setup fixture Add tests for get_object method with various scenarios Add tests for get_queryset and get_context_data methods	recipes/tests/test_views.py

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[bartczak-pa]

@sourcery-ai review

[bartczak-pa]

@sourcery-ai review