Flask-Guardian

About

Chainable request-validation rules for Flask, inspired by Joi.

This is an earlier library. Validate behavior against your Flask version before production use. The repository’s LICENSE file is currently empty; licensing needs clarification before redistribution.

Installation

Use pip for installation

pip install flask-guardian

How to use

Create your rule

from flask_guardian.rules import Rules
from flask_guardian.validator import Validator

my_rules = {
  "login": Rules().Required().String().Max(20),
  "password": Rules().Required().String().Min(8).Max(120)
}

Add the middleware inside your route

@app.route("/login", methods=["POST"])
@Validator(my_rules)
def login_():
  '''your code here'''

Rules

.String()

Verify if the parameter is a string.

.Integer()

Verify if the parameter is an integer.

.Email()

Using a regex, verify if the parameter is conform with email format.

.Min(x)

Verify if the parameter len is more than x.

.Max(x)

Verify if the parameter len is less or equal than x.

.Contains([x, y, z])

Verify if the parameter contains at least one argument of the array.

.notContains([x, y, z])

Verify if the parameter not contains any argument of the array.

.Equal(x)

Verify if the parameter equal x.

.notEqual(x)

Verify if the parameter not equal x.