Added default value to SS field.

[wolnelektury.git] / apps / catalogue / views.py

diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py
index 45dc7a0..9ae5051 100644 (file)
--- a/apps/catalogue/views.py
+++ b/apps/catalogue/views.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
 # -*- coding: utf-8 -*-

+import tempfile
+import zipfile
+

 from django.template import RequestContext
 from django.shortcuts import render_to_response, get_object_or_404
 from django.http import HttpResponse, HttpResponseRedirect, Http404
 from django.template import RequestContext
 from django.shortcuts import render_to_response, get_object_or_404
 from django.http import HttpResponse, HttpResponseRedirect, Http404


@@ -27,7 +30,6 @@ class LazyEncoder(simplejson.JSONEncoder):
         return obj
 
 
         return obj
 
 

-@cache.cache_control(must_revalidate=True, max_age=3600)

 def main_page(request):    
     if request.user.is_authenticated():
         shelves = models.Tag.objects.filter(category='set', user=request.user)
 def main_page(request):    
     if request.user.is_authenticated():
         shelves = models.Tag.objects.filter(category='set', user=request.user)


@@ -55,7 +57,6 @@ def book_list(request):
         context_instance=RequestContext(request))
 
 
         context_instance=RequestContext(request))
 
 

-@cache.cache_control(must_revalidate=True, max_age=3600)

 def tagged_object_list(request, tags=''):
     # Prevent DoS attacks on our database
     if len(tags.split('/')) > 6:
 def tagged_object_list(request, tags=''):
     # Prevent DoS attacks on our database
     if len(tags.split('/')) > 6:


@@ -67,16 +68,19 @@ def tagged_object_list(request, tags=''):
         raise Http404
     
     model = models.Book
         raise Http404
     
     model = models.Book

+    shelf = [tag for tag in tags if tag.category == 'set']

     shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
     theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0
     if theme_is_set:
         model = models.Fragment
 
     shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
     theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0
     if theme_is_set:
         model = models.Fragment
 

+    user_is_owner = (len(shelf) and request.user.is_authenticated() and request.user == shelf[0].user)
+    

     extra_where = 'NOT catalogue_tag.category = "set"'
     related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
     categories = split_tags(related_tags)
 
     extra_where = 'NOT catalogue_tag.category = "set"'
     related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
     categories = split_tags(related_tags)
 

-    if not theme_is_set:
+    if not (theme_is_set or shelf_is_set):

         model=models.Book.objects.filter(parent=None)
     
     return newtagging_views.tagged_object_list(
         model=models.Book.objects.filter(parent=None)
     
     return newtagging_views.tagged_object_list(


@@ -85,7 +89,7 @@ def tagged_object_list(request, tags=''):
         queryset_or_model=model,
         tags=tags,
         template_name='catalogue/tagged_object_list.html',
         queryset_or_model=model,
         tags=tags,
         template_name='catalogue/tagged_object_list.html',

-        extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set },
+        extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set, 'user_is_owner': user_is_owner },

     )
 
 
     )
 
 


@@ -116,62 +120,63 @@ def book_text(request, slug):
 # ==========
 # = Search =
 # ==========
 # ==========
 # = Search =
 # ==========

-def search(request):
-    query = request.GET.get('q', '')
-    tags = request.GET.get('tags', '')
-    if tags == '':
-        tags = []
-
-    try:
-        tag_list = models.Tag.get_tag_list(tags)
-        tag = models.Tag.objects.get(name=query)
-    except models.Tag.DoesNotExist:
-        try:
-            book = models.Book.objects.get(title=query)
-            return HttpResponseRedirect(book.get_absolute_url())
-        except models.Book.DoesNotExist:
-            return HttpResponseRedirect(reverse('catalogue.views.main_page'))
+def _tags_starting_with(prefix, user):
+    books = models.Book.objects.filter(title__icontains=prefix)
+    tags = models.Tag.objects.filter(name__icontains=prefix)
+    if user.is_authenticated():
+        tags = tags.filter(~Q(category='set') | Q(user=user))

     else:
     else:

-        tag_list.append(tag)
-        return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list', 
-            kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
-        ))
+        tags = tags.filter(~Q(category='set'))

 
 

+    return list(books) + list(tags)
+        

 
 

-def tags_starting_with(request):
+def search(request):
+    tags = request.GET.get('tags', '')
+    prefix = request.GET.get('q', '')
+    # Prefix must have at least 2 characters
+    if len(prefix) < 2:
+        return HttpResponse('')
+    

     try:
     try:

-        prefix = request.GET['q']
-        if len(prefix) < 2:
-            raise KeyError
-
-        books = models.Book.objects.filter(title__icontains=prefix)
-        tags = models.Tag.objects.filter(name__icontains=prefix)
-        if request.user.is_authenticated():
-            tags = tags.filter(~Q(category='set') | Q(user=request.user))
+        tag_list = models.Tag.get_tag_list(tags)
+    except:
+        tag_list = []
+    
+    result = _tags_starting_with(prefix, request.user)
+    if len(result) > 0:
+        tag = result[0]
+        if isinstance(tag, models.Book):
+            return HttpResponseRedirect(tag.get_absolute_url())

         else:
         else:

-            tags = tags.filter(~Q(category='set'))
-
-        completions = [book.title for book in books] + [tag.name for tag in tags]
+            tag_list.append(tag)
+        
+    return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list', 
+        kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
+    ))

 
 

-        return HttpResponse('\n'.join(completions))    

 
 

-    except KeyError:
+def tags_starting_with(request):
+    prefix = request.GET['q']
+    # Prefix must have at least 2 characters
+    if len(prefix) < 2:

         return HttpResponse('')
         return HttpResponse('')

+    
+    return HttpResponse('\n'.join(tag.name for tag in _tags_starting_with(prefix, request.user)))

 
 
 # ====================
 # = Shelf management =
 # ====================
 @login_required
 
 
 # ====================
 # = Shelf management =
 # ====================
 @login_required

-@cache.cache_control(must_revalidate=True, max_age=3600, private=True)
+@cache.never_cache

 def user_shelves(request):
     shelves = models.Tag.objects.filter(category='set', user=request.user)
     new_set_form = forms.NewSetForm()
     return render_to_response('catalogue/user_shelves.html', locals(),
             context_instance=RequestContext(request))
 
 def user_shelves(request):
     shelves = models.Tag.objects.filter(category='set', user=request.user)
     new_set_form = forms.NewSetForm()
     return render_to_response('catalogue/user_shelves.html', locals(),
             context_instance=RequestContext(request))
 

-
-@cache.cache_control(must_revalidate=True, max_age=3600, private=True)
+@cache.never_cache

 def book_sets(request, slug):
     book = get_object_or_404(models.Book, slug=slug)
     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 def book_sets(request, slug):
     book = get_object_or_404(models.Book, slug=slug)
     user_sets = models.Tag.objects.filter(category='set', user=request.user)


@@ -197,6 +202,62 @@ def book_sets(request, slug):
         context_instance=RequestContext(request))
 
 
         context_instance=RequestContext(request))
 
 

+@login_required
+@require_POST
+@cache.never_cache
+def remove_from_shelf(request, shelf, book):
+    book = get_object_or_404(models.Book, slug=book)
+    shelf = get_object_or_404(models.Tag, slug=shelf, category='set', user=request.user)
+    
+    models.Tag.objects.remove_tag(book, shelf)
+    
+    return HttpResponse('Usunieto')
+
+
+@cache.never_cache
+def download_shelf(request, slug):
+    """"
+    Create a ZIP archive on disk and transmit it in chunks of 8KB,
+    without loading the whole file into memory. A similar approach can
+    be used for large dynamic PDF files.                                        
+    """
+    shelf = get_object_or_404(models.Tag, slug=slug, category='set')
+            
+    # Create a ZIP archive
+    temp = temp = tempfile.TemporaryFile()
+    archive = zipfile.ZipFile(temp, 'w')
+    
+    # Collect all books to include in ZIP archive
+    def collect_books(books):
+        result = []
+        for book in books:
+            if len(book.children.all()) == 0:
+                result.append(book)
+            else:
+                result += collect_books(book.children.all())
+        return result
+    
+    for book in collect_books(models.Book.tagged.with_all(shelf)):
+        if book.pdf_file:
+            filename = book.pdf_file.path
+            archive.write(filename, str('%s.pdf' % book.slug))
+        if book.odt_file:
+            filename = book.odt_file.path
+            archive.write(filename, str('%s.odt' % book.slug))
+        if book.txt_file:
+            filename = book.txt_file.path
+            archive.write(filename, str('%s.txt' % book.slug))
+    archive.close()
+    
+    response = HttpResponse(content_type='application/zip', mimetype='application/x-zip-compressed')
+    response['Content-Disposition'] = 'attachment; filename=%s.zip' % shelf.sort_key
+    response['Content-Length'] = temp.tell()
+    
+    temp.seek(0)
+    response.write(temp.read())
+    return response
+
+

 @login_required
 @require_POST
 @cache.never_cache
 @login_required
 @require_POST
 @cache.never_cache


@@ -210,8 +271,7 @@ def new_set(request):
         else:
             return HttpResponseRedirect('/')
 
         else:
             return HttpResponseRedirect('/')
 

-    return render_to_response('catalogue/book_sets.html', locals(),
-            context_instance=RequestContext(request))
+    return HttpResponseRedirect('/')

 
 
 @login_required
 
 
 @login_required