feat: add endpoint to retrieve blogs by author

[skyspec28]

Community Feature - Blog Author Endpoint

Description

This feature introduces a new endpoint to retrieve blogs authored by a specific user. It enhances the platform by allowing users to filter blog posts by author, making it easier to find content from a particular writer.

Features

• Users can retrieve blog posts by a specific author.
• Added an endpoint to count the number of blog posts by an author.

Service Implementation

BlogService

• get_blogs_by_author: Retrieves all blog posts by a specific author, with pagination support.
• count_author_blogs: Returns the total number of blog posts written by a specific author.

Motivation and Context

Currently, there is no way to filter blog posts by author within the platform. This feature addresses that gap by:

• Improving content discoverability.
• Providing users with a better way to explore an author’s contributions.
• Enabling pagination for efficient data retrieval.

Testing

• Automated Tests: Implemented using FastAPI TestClient to verify API endpoints.
• Manual Testing: Verified the correct functionality of blog retrieval and counting by author.
• Database Validation: Ensured seamless interaction with SQLAlchemy ORM.
• Security Checks: Ensured appropriate authentication and authorization mechanisms.

Types of Changes

✅ New Feature (non-breaking change that adds functionality)

Checklist

• My code follows the project's coding style.
• I have read the CONTRIBUTING.md document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[joboy-dev]

You know you can just use author ID as a query parameter in the endpoint to get all blogs rather than creating a whole new endpoint for this