I've seen the posts on passing GET parameters and hardcoded parameters here and here.
What I am trying to do is pass POST parameters to a custom decorator. The route is not actually rendering a page but rather processing some stuff and sending the results back through an AJAX call.
The decorator looks like this:
# app/util.py
from functools import wraps
from models import data
# custom decorator to validate symbol
def symbol_valid():
def decorator(func):
@wraps(func)
def decorated_function(symbol, *args, **kwargs):
if not data.validate_symbol(symbol):
return jsonify({'status': 'fail'})
return func(*args, **kwargs)
return decorated_function
return decorator
The view looks something like this:
# app/views/matrix_blueprint.py
from flask import Blueprint, request, jsonify
from ..models import data
from ..util import symbol_valid
matrix_blueprint = Blueprint('matrix_blueprint', __name__)
# routing for the ajax call to return symbol details
@matrix_blueprint.route('/route_line', methods=['POST'])
@symbol_valid
def route_line():
symbol = request.form['symbol'].upper()
result = data.get_information(symbol)
return jsonify(**result)
I understand that I can actually call @symbol_valid() when I pass a parameter through GET like this /quote_line/<symbol> but I need to POST.
The question then is how can my decorator access the POSTed variable?
Jason Strimpel :
Simple solution. Imported Flask's request module into the util.py module which contains the decorator. Removed the outer function as well.\n\nSee code:\n\n# app/util.py\n\nfrom flask import request # <- added\n\nfrom functools import wraps\nfrom models import data\n\n# custom decorator to validate symbol\n\ndef symbol_valid(func):\n @wraps(func)\n def decorated_function(*args, **kwargs): # <- removed symbol arg\n symbol = request.form['symbol'] # <- paramter is in the request object\n if not data.validate_symbol(symbol):\n return jsonify({'status': 'fail'})\n return func(*args, **kwargs)\n return symbol_valid\n",
2015-11-15T12:53:06