author | Tero Marttila <terom@fixme.fi> |
Thu, 22 Aug 2013 02:12:13 +0300 | |
changeset 55 | eb36c4d046c1 |
parent 54 | 0a2345d1450a |
child 56 | 96e1c616a955 |
permissions | -rw-r--r-- |
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import datetime |
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import urllib |
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from django import http, shortcuts, forms |
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from django.conf import settings, urls |
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from django.contrib import admin |
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from django.core.urlresolvers import reverse |
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from django.utils import timezone, formats |
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import django.utils.html |
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import django.forms.models |
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from qrurls.models import URL, URLItem, URLImage |
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""" |
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Private backend UI, using django-admin. |
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""" |
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class URLItemFormset (django.forms.models.BaseInlineFormSet) : |
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""" |
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Uses the existing URLItems for the URLFeed to determine the initial publishing |
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times for new items. |
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""" |
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def __init__ (self, *args, **kwargs) : |
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urlfeed = kwargs.get('instance') |
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extra = kwargs.get('extra', 5) |
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publishing_date, publishing_time = URLAdmin.publish_scheduling(urlfeed) |
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kwargs.update(initial=[ |
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dict(published=publish) for publish in URLAdmin.publishing_schedule( |
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publishing_date, publishing_time, count=extra) |
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]) |
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super(URLItemFormset, self).__init__(*args, **kwargs) |
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class URLItemInline (admin.TabularInline) : |
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""" |
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Inline set of URLItems for an URLFeed. |
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""" |
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model = URLItem |
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formset = URLItemFormset |
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class URLAdmin (admin.ModelAdmin) : |
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@classmethod |
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def publish_scheduling (cls, urlfeed) : |
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"""Calculate initial URLItem.published values for feed, or defaults.""" |
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# hack to get at the URLFeed to determine our initial values.. |
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if urlfeed and isinstance(urlfeed, URL) : |
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# starting from the following day |
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return ( |
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urlfeed.last_item().published.date() + datetime.timedelta(days=1), |
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urlfeed.publishing_time, |
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) |
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else: |
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# no data... |
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return datetime.date.today(), datetime.time() |
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@classmethod |
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def publishing_schedule (cls, publishing_date, publishing_time, count) : |
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"""Yield URLItem.published values.""" |
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for days in xrange(0, count) : |
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yield datetime.datetime.combine( |
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publishing_date + datetime.timedelta(days=days), |
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publishing_time |
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) |
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def timezone (self, obj) : |
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now = timezone.localtime(obj.now()) |
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tz = now.tzinfo |
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td = now.tzinfo.utcoffset(now) |
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if td : |
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minutes, seconds = divmod(td.total_seconds(), 60) |
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hours, minutes = divmod(minutes, 60) |
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offset = "(UTC%+03d:%02d)" % (hours, minutes) |
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else : |
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offset = "" |
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return u"%s %s" % (tz, offset) |
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def qrcode_url (self, obj) : |
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warn = None |
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if obj.shorturl.upper() != obj.shorturl : |
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warn = "Shorturl should be UPPERCASE for most compact QR code" |
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return '<a href="{url}">{url}</a>{warn}'.format( |
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url = django.utils.html.escape(obj.qrcode_url()), |
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warn = '<p class="errornote">{warn}</p>'.format(warn=warn) if warn else '', |
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) |
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qrcode_url.allow_tags = True |
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def qrcode_img (self, obj) : |
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return '<img src="{img}" />'.format( |
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img=django.utils.html.escape(obj.qrcode_img()), |
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) |
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qrcode_img.allow_tags = True |
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# XXX: a whole bunch of ugly datetime-formatting for display... |
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def active (self, obj) : |
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item = obj.active_item() |
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if item : |
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return "%s %s" % (formats.localize(timezone.localtime(item.published)), item) |
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else : |
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return "" |
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def now (self, obj) : |
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return formats.localize(timezone.localtime(obj.now())) |
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def upcoming (self, obj) : |
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item = obj.upcoming_item() |
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if item : |
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return "%s %s" % (formats.localize(timezone.localtime(item.published)), item) |
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else : |
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return "" |
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117 |
|
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readonly_fields = ( |
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'timezone', |
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'qrcode_url', |
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'qrcode_img', |
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'active_item', |
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'upcoming_item', |
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'active', |
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'now', |
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'upcoming', |
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) |
2 | 128 |
list_display = ( |
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'get_absolute_url', |
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'active_item', |
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'upcoming_item', |
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) |
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fieldsets = ( |
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(None, { |
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'fields': ( |
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'shorturl', |
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'publishing_time', |
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'timezone', |
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'title', |
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), |
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141 |
}), |
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("QRCode", { |
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'fields': ('qrcode_url', 'qrcode_img'), |
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144 |
}), |
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("Item publishing overview", { |
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'fields': ( |
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'active', |
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'now', |
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'upcoming', |
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), |
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151 |
}), |
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) |
3 | 153 |
inlines = (URLItemInline, ) |
2 | 154 |
|
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## Import |
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class ImportForm (forms.Form) : |
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shorturl = forms.ModelChoiceField(URL.objects) |
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publishing_date = forms.DateField(widget=admin.widgets.AdminDateWidget) |
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publishing_time = forms.TimeField(widget=admin.widgets.AdminTimeWidget) |
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# Django forms doesn't really understand multi-value fields, so we just hack this ourselves. |
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#image = forms.ImageField() |
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162 |
|
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def import_images_handler (self, url_feed, data, images=()) : |
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"""Custom for backend for mass-importing images into a feed.""" |
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165 |
|
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publishing = self.publishing_schedule(data['publishing_date'], data['publishing_time'], len(images)) |
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167 |
|
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for image, publish in zip(images, publishing) : |
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url_image = URLImage(image=image) |
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url_image.save() |
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171 |
|
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url_item = URLItem(shorturl=url_feed, published=publish, image=url_image) |
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url_item.save() |
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174 |
|
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return http.HttpResponseRedirect(reverse('admin:qrurls_url_change', args=(url_feed.id, ))) |
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176 |
|
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def import_images (self, request, shorturl_id) : |
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"""Custom form frontend for mass-importing images into a feed.""" |
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url_feed = URL.objects.get(id=int(shorturl_id)) |
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180 |
|
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if request.method == 'POST' : |
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form = self.ImportForm(request.POST) |
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images = request.FILES.getlist('image') |
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184 |
|
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185 |
if form.is_valid() : |
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return self.import_images_handler(url_feed, form.cleaned_data, images) |
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else : |
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publishing_date, publishing_time = self.publish_scheduling(url_feed) |
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189 |
|
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190 |
form = self.ImportForm(initial=dict( |
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191 |
shorturl = url_feed.id, |
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publishing_date = publishing_date, |
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193 |
publishing_time = publishing_time, |
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194 |
)) |
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195 |
|
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196 |
return shortcuts.render(request, 'admin/qrurls_import_images.html', dict( |
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197 |
current_app = self.admin_site.name, |
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198 |
|
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199 |
media = self.media + form.media, |
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form_url = reverse('admin:qrurls_import_images', kwargs=dict(shorturl_id=url_feed.id)), |
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201 |
form = form, |
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202 |
)) |
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203 |
|
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204 |
def get_urls (self) : |
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205 |
return urls.patterns('', |
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206 |
urls.url(r'^(?P<shorturl_id>\d+)/import$', self.admin_site.admin_view(self.import_images), |
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207 |
name='qrurls_import_images'), |
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208 |
) + super(URLAdmin, self).get_urls() |
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209 |
|
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210 |
def import_images_action (self, request, queryset) : |
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211 |
url_feed, = [url_feed for url_feed in queryset] |
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212 |
return http.HttpResponseRedirect( |
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213 |
reverse('admin:qrurls_import_images', kwargs=dict(shorturl_id=url_feed.id)) # ) + '?' + urllib.urlencode(qs, doseq=True) |
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214 |
) |
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215 |
import_images_action.short_description = "Import images for selected feeds" |
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216 |
|
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217 |
actions = [import_images_action] |
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218 |
|
2 | 219 |
class URLItemAdmin (admin.ModelAdmin) : |
220 |
list_display = ( |
|
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221 |
'shorturl', 'published_state', 'get_absolute_url', 'image', 'published', |
3 | 222 |
) |
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223 |
readonly_fields = ('published_state', 'published') |
3 | 224 |
fieldsets = ( |
225 |
("Publishing", { |
|
226 |
'fields': ('shorturl', 'published', ), |
|
227 |
}), |
|
228 |
("Target", { |
|
32 | 229 |
'fields': ('url', 'image'), |
3 | 230 |
}), |
2 | 231 |
) |
232 |
||
30 | 233 |
class URLImageAdmin (admin.ModelAdmin) : |
38 | 234 |
list_display = ( |
45 | 235 |
'title', |
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236 |
'uploaded', |
38 | 237 |
) |
30 | 238 |
# hide the "uploaded" field |
38 | 239 |
fields = ( |
240 |
'image', |
|
40 | 241 |
'title', |
38 | 242 |
) |
30 | 243 |
readonly_fields = ( |
244 |
'uploaded', |
|
245 |
) |
|
32 | 246 |
|
247 |
inlines = (URLItemInline, ) |
|
30 | 248 |
|
2 | 249 |
admin.site.register(URL, URLAdmin) |
250 |
admin.site.register(URLItem, URLItemAdmin) |
|
32 | 251 |
admin.site.register(URLImage, URLImageAdmin) |