Flask-Validation 
$ pip install flask-validationPythonic JSON payload validator for requested JSON payload of Flask
Flask를 위한 view decorator 기반의 JSON 요청 데이터 validation 라이브러리
Example Usages
json_required
from flask import Flask
from flask_validation import json_required, Validator
app = Flask(__name__)
Validator(app)
@json_required
@app.route('/', methods=('POST'))
def index():
return 'hello!'
app.run()$ curl -d '' -v http://localhost:5000
...
> POST / HTTP/1.1
> Content-Type: application/x-www-form-urlencoded
< HTTP/1.0 400 BAD REQUEST
$
$ curl -H "Content-Type: application/json" -d '' -v http://localhost:5000
...
> POST / HTTP/1.1
> Content-Type: application/x-www-form-urlencoded
< HTTP/1.0 200 OKvalidate_keys
from flask import Flask
from flask_validation import validate_keys, Validator
app = Flask(__name__)
Validator(app)
@validate_keys(['name', 'age', { 'position': ['lati', 'longi'] }])
@app.route('/', methods=('POST'))
def index():
return 'hello!'
app.run()$ curl -H "Content-Type: application/json" -d '{"name": "PlanB"}' -v http://localhost:5000
...
> POST / HTTP/1.1
> Content-Type: application/x-www-form-urlencoded
< HTTP/1.0 400 BAD REQUEST
$
$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": 19, "position": {"lati": 35.24, "longi": 127.681146}}' -v http://localhost:5000
...
> POST / HTTP/1.1
> Content-Type: application/json
< HTTP/1.0 200 OKothers
from flask import Flask
from flask_validation import validate_common, validate_with_fields, validate_with_jsonschema, Validator
app = Flask(__name__)
Validator(app)
@validate_common({ 'name': str, 'age': int, { 'position': {'lati': float, 'longi': float} } })
@app.route('/1', methods=('POST'))
def validate_1():
return 'hello!'
@validate_with_fields({
'name': StringField(allow_empty=False, regex='[A-z ]+'),
'age': IntField(min_value=0),
'gender': StringField(required=False, enum=['M', 'F']),
{
'position': {
'lati': NumberField(min_value=0),
'longi': NumberField(min_value=0)
}
}
})
@app.route('/2', methods=('POST'))
def validate_2():
return 'hello!'
@validate_with_jsonschema({
'type': 'object',
'properties': {
'name': {'type': 'string'},
'age': {'type': 'integer'},
'position': {
'type': 'object',
'properties': {
'lati': {'type': 'number'},
'longi': {'type': 'number'}
}
}
}
})
@app.route('/3', mehtods=('POST'))
def validate_3():
return 'hello!'
app.run()$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": 19, "position": {"lati": 35.24, "longi": 127.681146}}' -v http://localhost:5000/1
< HTTP/1.0 200 OK
$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": 19, "position": {"lati": 35.24, "longi": 127}}' -v http://localhost:5000/1
< HTTP/1.0 400 BAD REQUEST
$
$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": 19, "position": {"lati": 35, "longi": 127}}' -v http://localhost:5000/2
< HTTP/1.0 200 OK
$ curl -H "Content-Type: application/json" -d '{"name": "", "age": 19, "position": {"lati": 35, "longi": 127}}' -v http://localhost:5000/2
< HTTP/1.0 400 BAD REQUEST
$
$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": 19, "position": {"lati": 35, "longi": 127}}' -v http://localhost:5000/3
< HTTP/1.0 200 OK
$ curl -H "Content-Type: application/json" -d '{"name": "PlanB", "age": "19", "position": {"lati": 35, "longi": 127}}' -v http://localhost:5000/3
< HTTP/1.0 400 BAD REQUEST
