bear-django-base-utils 0.1.0

A collection of essential utilities for Python projects, including data type detection, date filtering, and token decoding.

Bear Django Request Utils

This is a core utility library for Django, designed to clean and normalize incoming request data (GET, POST, JSON, etc.) before it reaches your business logic. It solves the common problem of client applications (frontend, mobile apps) sending data in a non-unified format.

This package provides the base logic and is intended to be used within your own components, such as middleware.

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✨ Key Features

• None Normalization: Converts strings like "null", empty strings "", and the integer 0 for id or _id fields into a None value.
• Boolean Normalization: Converts string values like "true" and "false" (case-insensitive) into True and False.
• String Cleaning: Automatically trims leading/trailing whitespace and decodes URL-encoded characters (like %20).
• Special Email Handling: Removes spaces and lowercases email fields.
• Universal: Works with GET parameters, application/json, multipart/form-data, and application/x-www-form-urlencoded.
• Configurable: Allows you to specify which URL prefixes (e.g., /api/) the normalization should apply to.

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⚙️ Installation

pip install bear-django-base-utils

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🧩 Concept and Usage

This package provides a RequestUtils class with a set of static methods. The main method is convert_request_params(request), which accepts a Django request object and modifies it in-place.

The best way to use this is by calling the method from within your own custom middleware.

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Example of creating middleware that uses this package

your_project/middleware.py

from bear_request_utils import RequestUtils

class RequestNormalizerMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        # Call the core logic from the package
        RequestUtils.convert_request_params(request)
        return self.get_response(request)

Add your middleware to settings.py:

MIDDLEWARE = [
    # ...
    'your_project.middleware.RequestNormalizerMiddleware',
    # ...
]

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⚙️ Configuration

To enable normalization, you must specify a list of URL prefixes for which it will be applied. This is done in your settings.py.

# settings.py

# A list of URL prefixes for which normalization will be active.
API_PREFIXES = ['/api/v1/', '/api/v2/']

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🧮 Normalization Rules

Input Value	Key	Output Value	Explanation
"null"	any	None	The string "null" becomes None
"true"	any	True	The string "true" becomes True
"false"	any	False	The string "false" becomes False
0 (integer)	user_id	None	0 for _id or id fields becomes None
"0" (string)	id	None	The string "0" for _id or id fields becomes None
"" (empty string)	category_id	None	An empty string for _id or id fields becomes None
" test%20string "	name	"test string"	Whitespace is trimmed and characters are decoded
" [e-mail] "	email	"[e-mail]"	Whitespace is removed and the string is lowercased

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📜 License

This project is licensed under the MIT License.