Code cleanup 160

[reenu153]

Description

This pull request refactors the code primarily to address the code cleanup tasks outlined in issue #160. The refactoring addresses several code smells and aims to improve the readability, maintainability, and structure of the codebase.

Refactoring Details:

1. Magic Numbers/Constants:

   • Issue: Magic numbers and hardcoded values were scattered across the codebase, making the code harder to maintain.
   • Refactoring:
     • Created a backend/core/constants.py file to define named constants for recurring numerical values (e.g., MAX_LENGTH_STANDARD, MAX_LENGTH_NAME, MAX_LENGTH_DESCRIPTION, DECIMAL_MAX_DIGITS, DECIMAL_PLACES).
     • Replaced hardcoded max_length and decimal constraints in models with the defined constants.

2. Inappropriate/Unclear Naming:

   • Issue: Some variable and function names were ambiguous and did not clearly convey their purpose.
   • Refactoring:
     • Renamed functions to be more descriptive and Pythonic:
       • _public_storage → get_public_storage
       • _private_storage → get_private_storage
       • RandomCode → generate_verification_code
       • RandomAPICode → generate_api_key
       • upload_to_user_separate_folder → get_file_upload_path
     • These changes enhance clarity by explicitly describing the functionality of each function.

3. Set blank=False for name fields: Ensures name and related fields (e.g., description, event_name) are required across multiple models to prevent missing data.

Checklist

• [x] Ran the Black Formatter and djLint-er on any new code (checks will fail without)
• [ ] Made any changes or additions to the documentation where required
• [x] Changes generate no new warnings/errors
• [x] New and existing unit tests pass locally with my changes

What type of PR is this?

• ♻️ Code Refactor

Added/updated tests?

• 🙅 no, because they aren't needed

Related PRs, Issues etc

• Related Issue #160

[TreyWW]

Hey @reenu153 / @LaraMerdol,

Thank you for these changes! There's currently a fairly big queue in PRs so I wont be able to merge this right away, but I do appreciate the effort! I'll let you know when I get round to testing and merging this :)