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comparison user_photos/views.py @ 722:71d17d267e27

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Added an ajax form to upload photos & update post box w/image code.
author Brian Neal <bgneal@gmail.com>
date Sat, 21 Sep 2013 17:00:49 -0500
parents bf5340705d0c
children c0199d3d3b86
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721:378b55b81de3 722:71d17d267e27
1 """Views for the user_photos application.""" 1 """Views for the user_photos application."""
2 import json
3
2 from django.conf import settings 4 from django.conf import settings
3 from django.contrib.auth import get_user_model 5 from django.contrib.auth import get_user_model
4 from django.contrib.auth.decorators import login_required 6 from django.contrib.auth.decorators import login_required
7 from django.http import (HttpResponse, HttpResponseForbidden,
8 HttpResponseNotAllowed)
5 from django.shortcuts import render, redirect, get_object_or_404 9 from django.shortcuts import render, redirect, get_object_or_404
6 from django.views.generic import ListView 10 from django.views.generic import ListView
7 from django.views.decorators.http import require_POST 11 from django.views.decorators.http import require_POST
8 from django.utils.decorators import method_decorator 12 from django.utils.decorators import method_decorator
9 from django.contrib import messages 13 from django.contrib import messages
17 def upload(request): 21 def upload(request):
18 """This view function receives an uploaded image file from a user. 22 """This view function receives an uploaded image file from a user.
19 The photo will be resized if necessary and a thumbnail image will be 23 The photo will be resized if necessary and a thumbnail image will be
20 created. The image and thumbnail will then be uploaded to the Amazon 24 created. The image and thumbnail will then be uploaded to the Amazon
21 S3 service for storage. 25 S3 service for storage.
22
23 TODO: rate limiting
24 pass off the processing to a celery task
25 ajax version of this view
26 26
27 """ 27 """
28 form = None 28 form = None
29 uploads_enabled = settings.USER_PHOTOS_ENABLED 29 uploads_enabled = settings.USER_PHOTOS_ENABLED
30 30
40 return render(request, 'user_photos/upload_form.html', { 40 return render(request, 'user_photos/upload_form.html', {
41 'enabled': uploads_enabled, 41 'enabled': uploads_enabled,
42 'form': form, 42 'form': form,
43 }, 43 },
44 status=200 if uploads_enabled else 503) 44 status=200 if uploads_enabled else 503)
45
46
47 def upload_ajax(request):
48 """This view is the ajax version of the upload function, above.
49
50 We return a JSON object response to the client with the following name
51 & value pairs:
52 'success' : false for failure and true for success
53 'msg' : string error message if success is false
54 'url' : the image URL as a string if success
55
56 If a non-200 status code is returned the response will simply be a text
57 string error message.
58
59 """
60 if not request.user.is_authenticated():
61 return HttpResponseForbidden
62 if not request.is_ajax() or request.method != 'POST':
63 return HttpResponseNotAllowed
64
65 ret = {'success': False, 'msg': '', 'url': ''}
66 if settings.USER_PHOTOS_ENABLED:
67 form = UploadForm(request.POST, request.FILES, user=request.user)
68 if form.is_valid():
69 photo = form.save()
70 ret['success'] = True
71 ret['url'] = photo.url
72 else:
73 # gather form error messages
74 errors = []
75 non_field_errors = form.non_field_errors().as_text()
76 if non_field_errors:
77 errors.append(non_field_errors)
78 for field_errors in form.errors.values():
79 errors.append(field_errors.as_text())
80 ret['msg'] = '\n'.join(errors)
81 else:
82 ret['msg'] = 'Photo uploads are temporarily disabled'
83
84 return HttpResponse(json.dumps(ret), content_type='application/json')
45 85
46 86
47 class GalleryView(ListView): 87 class GalleryView(ListView):
48 """A ListView for displaying a user's photos""" 88 """A ListView for displaying a user's photos"""
49 89