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clipboardadmin.py
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clipboardadmin.py
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# -*- coding: utf-8 -*-
import json
from django.forms.models import modelform_factory
from django.contrib import admin
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from filer import settings as filer_settings
from filer.models import Folder, Clipboard, ClipboardItem, Image
from filer.utils.compatibility import DJANGO_1_4, get_model
from filer.utils.files import (
handle_upload, handle_request_files_upload, UploadException,
)
from filer.utils.loader import load_object
from filer.validators import FileMimetypeValidator
NO_FOLDER_ERROR = "Can't find folder to upload. Please refresh and try again"
NO_PERMISSIONS_FOR_FOLDER = (
"Can't use this folder, Permission Denied. Please select another folder."
)
# ModelAdmins
class ClipboardItemInline(admin.TabularInline):
model = ClipboardItem
class ClipboardAdmin(admin.ModelAdmin):
model = Clipboard
inlines = [ClipboardItemInline]
filter_horizontal = ('files',)
raw_id_fields = ('user',)
verbose_name = "DEBUG Clipboard"
verbose_name_plural = "DEBUG Clipboards"
def get_urls(self):
from django.conf.urls import patterns, url
urls = super(ClipboardAdmin, self).get_urls()
from filer import views
url_patterns = patterns('',
url(r'^operations/paste_clipboard_to_folder/$',
self.admin_site.admin_view(views.paste_clipboard_to_folder),
name='filer-paste_clipboard_to_folder'),
url(r'^operations/discard_clipboard/$',
self.admin_site.admin_view(views.discard_clipboard),
name='filer-discard_clipboard'),
url(r'^operations/delete_clipboard/$',
self.admin_site.admin_view(views.delete_clipboard),
name='filer-delete_clipboard'),
# upload does it's own permission stuff (because of the stupid
# flash missing cookie stuff)
url(r'^operations/upload/(?P<folder_id>[0-9]+)/$',
ajax_upload,
name='filer-ajax_upload'),
url((r'^operations/upload/'
r'(?P<folder_key>\w*)/'
r'(?P<related_field>\w+.\w+.\w+)/'
r'$'),
ajax_upload,
name='filer-ajax_upload'),
url((r'^operations/upload/(?P<folder_key>\w*)/$'),
ajax_upload,
name='filer-ajax_upload'),
url((r'^operations/upload/no_folder/$'),
ajax_upload,
name='filer-ajax_upload'),
)
url_patterns.extend(urls)
return url_patterns
def get_model_perms(self, *args, **kwargs):
"""
It seems this is only used for the list view. NICE :-)
"""
return {
'add': False,
'change': False,
'delete': False,
}
@csrf_exempt
def ajax_upload(request, folder_id=None, folder_key=None, related_field=None):
"""
Receives an upload from the uploader. Receives only one file at a time.
"""
mimetype = "application/json" if request.is_ajax() else "text/html"
content_type_key = 'mimetype' if DJANGO_1_4 else 'content_type'
response_params = {content_type_key: mimetype}
mimetypes = []
try:
if related_field:
related_field = related_field.split('.')
if len(related_field) != 3:
raise UploadException("Related field is not valid.")
try:
model = get_model(related_field[0], related_field[1])
field = model._meta.get_field_by_name(related_field[2])[0]
except:
raise UploadException("Related field is not valid.")
for validator in field.validators:
if isinstance(validator, FileMimetypeValidator):
mimetypes += validator.mimetypes
folder = None
if folder_id:
try:
# Get folder
folder = Folder.objects.get(pk=folder_id)
except Folder.DoesNotExist:
return HttpResponse(json.dumps({'error': NO_FOLDER_ERROR}),
**response_params)
elif folder_key and folder_key != 'no_folder':
from filer.utils.folders import get_default_folder_getter
folder = get_default_folder_getter().get(folder_key, request)
# check permissions
if folder and not folder.has_add_children_permission(request):
raise UploadException(NO_PERMISSIONS_FOR_FOLDER)
if len(request.FILES) == 1:
# dont check if request is ajax or not, just grab the file
upload, filename, is_raw = handle_request_files_upload(request, mimetypes)
else:
# else process the request as usual
upload, filename, is_raw = handle_upload(request, mimetypes)
# TODO: Deprecated/refactor
# Get clipboad
# clipboard = Clipboard.objects.get_or_create(user=request.user)[0]
# find the file type
for filer_class in filer_settings.FILER_FILE_MODELS:
FileSubClass = load_object(filer_class)
# TODO: What if there are more than one that qualify?
if FileSubClass.matches_file_type(filename, upload, request):
FileForm = modelform_factory(
model=FileSubClass,
fields=('original_filename', 'owner', 'file')
)
break
uploadform = FileForm({'original_filename': filename,
'owner': request.user.pk},
{'file': upload})
if uploadform.is_valid():
file_obj = uploadform.save(commit=False)
# Enforce the FILER_IS_PUBLIC_DEFAULT
file_obj.is_public = filer_settings.FILER_IS_PUBLIC_DEFAULT
file_obj.folder = folder
file_obj.save()
# TODO: Deprecated/refactor
# clipboard_item = ClipboardItem(
# clipboard=clipboard, file=file_obj)
# clipboard_item.save()
# Try to generate thumbnails.
if not file_obj.icons:
# There is no point to continue, as we can't generate
# thumbnails for this file. Usual reasons: bad format or
# filename.
file_obj.delete()
# This would be logged in BaseImage._generate_thumbnails()
# if FILER_ENABLE_LOGGING is on.
return HttpResponse(
json.dumps(
{'error': 'failed to generate icons for file'}),
status=500,
**response_params)
thumbnail = None
# Backwards compatibility: try to get specific icon size (32px)
# first. Then try medium icon size (they are already sorted),
# fallback to the first (smallest) configured icon.
for size in (['32'] +
filer_settings.FILER_ADMIN_ICON_SIZES[1::-1]):
try:
thumbnail = file_obj.icons[size]
break
except KeyError:
continue
json_response = {
'thumbnail': thumbnail,
'alt_text': '',
'label': str(file_obj),
'file_id': file_obj.pk,
}
# prepare preview thumbnail
if type(file_obj) == Image:
thumbnail_180_options = {
'size': (180, 180),
'crop': True,
'upscale': True,
}
thumbnail_180 = file_obj.file.get_thumbnail(
thumbnail_180_options)
json_response['thumbnail_180'] = thumbnail_180.url
json_response['original_image'] = file_obj.url
return HttpResponse(json.dumps(json_response),
**response_params)
else:
form_errors = '; '.join(['%s: %s' % (
fieldname,
', '.join(errors)) for fieldname, errors in list(
uploadform.errors.items())
])
raise UploadException(
"AJAX request not valid: form invalid '%s'" % (
form_errors,))
except UploadException as e:
return HttpResponse(json.dumps({'error': str(e)}),
# status=500, we know what's going on and must display it to the user
**response_params)