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d509643dfe
JSONResponse, JSONSuccess and JSONError are for building answers accept_method is a decorator to check if the method to access the view is accepted
114 lines
3.8 KiB
Python
114 lines
3.8 KiB
Python
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
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# se veut agnostique au réseau considéré, de manière à être installable en
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# quelques clics.
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#
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# Copyright © 2018 Maël Kervella
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""api.utils.
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Set of various and usefull functions for the API app
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"""
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from rest_framework.renderers import JSONRenderer
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from django.http import HttpResponse
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class JSONResponse(HttpResponse):
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"""A JSON response that can be send as an HTTP response.
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Usefull in case of REST API.
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"""
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def __init__(self, data, **kwargs):
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"""Initialisz a JSONResponse object.
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Args:
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data: the data to render as JSON (often made of lists, dicts,
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strings, boolean and numbers). See `JSONRenderer.render(data)` for
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further details.
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Creates:
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An HTTPResponse containing the data in JSON format.
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"""
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content = JSONRenderer().render(data)
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kwargs['content_type'] = 'application/json'
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super(JSONResponse, self).__init__(content, **kwargs)
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class JSONError(JSONResponse):
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"""A JSON response when the request failed.
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"""
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def __init__(self, error_msg, data=None, **kwargs):
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"""Initialise a JSONError object.
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Args:
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error_msg: A message explaining where the error is.
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data: An optional field for further data to send along.
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Creates:
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A JSONResponse containing a field `status` set to `error` and a field
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`reason` containing `error_msg`. If `data` argument has been given,
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a field `data` containing it is added to the JSON response.
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"""
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response = {
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'status' : 'error',
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'reason' : error_msg
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}
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if data is not None:
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response['data'] = data
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super(JSONError, self).__init__(response, **kwargs)
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class JSONSuccess(JSONResponse):
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"""A JSON response when the request suceeded.
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"""
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def __init__(self, data=None, **kwargs):
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"""Initialise a JSONSucess object.
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Args:
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error_msg: A message explaining where the error is.
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data: An optional field for further data to send along.
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Creates:
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A JSONResponse containing a field `status` set to `sucess`. If `data`
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argument has been given, a field `data` containing it is added to the
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JSON response.
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"""
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response = {
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'status' : 'success',
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}
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if data is not None:
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response['data'] = data
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super(JSONSuccess, self).__init__(response, **kwargs)
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def accept_method(methods):
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"""Decorator to set a list of accepted request method.
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Check if the method used is accepted. If not, send a NotAllowed response.
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"""
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def decorator(view):
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def wrapper(request, *args, **kwargs):
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if request.method in methods:
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return view(request, *args, **kwargs)
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else:
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return JSONError('Invalid request method. Request methods authorize are '+str(methods))
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return view(request, *args, **kwargs)
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return wrapper
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return decorator
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