update librarian

[redakcja.git] / apps / cover / forms.py

diff --git a/apps/cover/forms.py b/apps/cover/forms.py
index 67a0c53..e6ffdff 100755 (executable)
--- a/apps/cover/forms.py
+++ b/apps/cover/forms.py
@@ -6,8 +6,9 @@
 import re
 from urllib2 import urlopen
 from django import forms
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import ugettext_lazy as _, ugettext
 from cover.models import Image
+from django.utils.text import mark_safe
 
 class ImageAddForm(forms.ModelForm):
     class Meta:
@@ -15,10 +16,20 @@ class ImageAddForm(forms.ModelForm):
 
     def __init__(self, *args, **kwargs):
         super(ImageAddForm, self).__init__(*args, **kwargs)
-        self.fields['file'].required = self.fields['download_url'].required = False
+        self.fields['file'].required = False
 
     def clean_download_url(self):
-        return self.cleaned_data['download_url'] or None
+        cl = self.cleaned_data['download_url'] or None
+        if cl is not None:
+            try:
+                img = Image.objects.get(download_url=cl)
+            except Image.DoesNotExist:
+                pass
+            else:
+                raise forms.ValidationError(mark_safe(
+                    ugettext('Image <a href="%(url)s">already in repository</a>.'
+                        ) % {'url': img.get_absolute_url()}))
+        return cl
 
     def clean(self):
         cleaned_data = super(ImageAddForm, self).clean()
@@ -26,7 +37,6 @@ class ImageAddForm(forms.ModelForm):
             raise forms.ValidationError('No image specified')
         return cleaned_data
 
-
 class ImageEditForm(forms.ModelForm):
     """Form used for editing a Book."""
     class Meta:
@@ -35,7 +45,7 @@ class ImageEditForm(forms.ModelForm):
 
 
 class ReadonlyImageEditForm(ImageEditForm):
-    """Form used for not editing a Book."""
+    """Form used for not editing an Image."""
 
     def __init__(self, *args, **kwargs):
         ret = super(ReadonlyImageEditForm, self).__init__(*args, **kwargs)
@@ -70,7 +80,7 @@ class FlickrForm(forms.Form):
             assert match
             license_url = match.group(1)
             self.cleaned_data['license_url'] = license_url
-            re_license = re.compile(r'http://creativecommons.org/licenses/([^/]*)/([^/]*)/.*')
+            re_license = re.compile(r'https?://creativecommons.org/licenses/([^/]*)/([^/]*)/.*')
             m = re_license.match(license_url)
             assert m
             self.cleaned_data['license_name'] = 'CC %s %s' % (m.group(1).upper(), m.group(2))