json_validator

---

Decorator for validating json parameters passed to function. Can be used for validation of parameters sent to Flask and loaded by request.get_json().

Uses jsonschema for validating data.

Instalation

pip install json_validator

Parameters

Args:
    message: message returned in case of validation errors
    params_variable: name of the argument which contains json parameters
    schema_filename: name of json file or path to the json file in which
                        json schema is stored
    debug: if set to True, will raise detailed exception in case of validation errors

Returns:
    Returns {"status": message} in case of validation errors
    Returns function passed to decorator in case that validation passed

Decorator defaults

@validate_params(message="Wrong params!",
                 params_variable="params",
                 schema_filename="schema.json",
                 debug=False)

Usage Examples

You can find examples of usage in ./examples directory.

Below you can find simplest usage examples:

Example 1:

from json_validator import validate_params

@validate_params
def some_function(params):
    result = some_another_function(params)
    return result

Example 2:

from json_validator import validate_params

@validate_params(schema_filename="schema1.json",
                 params_variable="params_dict",
                 message="DENIED!",
                 debug=True)
def some_function(params_dict):
    result = some_another_function(params_dict)
    return result

Tests

1. To test json_validator with default system python:

py.test

2. To test multiple python versions on OS X use pyenv and tox:

a) prepare environment:

brew install pyenv
pyenv install -s 2.7.13
pyenv install -s 3.5.3
pyenv install -s 3.6.0
pyenv local 2.7.13 3.5.3 3.6.0

b) run tests:

tox