Exception handling, if current item is removed from parent view by user action

__init__.py

@@ -9,6 +9,7 @@ SHUFFLE_ENABLE = 2
 
 REPEAT_DISABLE = 0
 REPEAT_ENABLE = 1
+REPEAT_KEEP = 2
 
 SEARCH_DISABLE = 0
 SEARCH_KEEP = 1
@@ -72,6 +73,8 @@ def url_args(request, repeat=REPEAT_DISABLE, shuffle=SHUFFLE_KEEP, search=SEARCH
     args_d = {}
     if repeat == REPEAT_ENABLE:
         args_d['repeat'] = None
+    elif repeat == REPEAT_KEEP and is_repeatview(request):
+        args_d['repeat'] = None
     if shuffle == SHUFFLE_ENABLE:
         args_d['shuffle'] = binascii.hexlify(os.urandom(24)).decode('utf-8')
     elif shuffle == SHUFFLE_KEEP:

views/__init__.py

@@ -23,7 +23,7 @@ from users.views import profile_pre_actions, profile_post_actions
 from users.forms import UserProfileFormLanguageOnly
 from .userviews import get_wrapper_instance as get_userview_wrapper_instance
 import zipfile
-from pygal.views.userviews import query_view
+from pygal.views.userviews import query_view, ItemDoesNotEsistWithinParent
 
 
 def pygal_item_does_not_exist(request, context):
@@ -155,7 +155,10 @@ def pygal_userview_infoview(request, responsetype, rel_path):
     #
     if w.may_read():
         context.set_additional_title(w.name)
-        return w.render(context)
+        try:
+            return w.render(context)
+        except ItemDoesNotEsistWithinParent:
+            return redirect('?'.join([request.META['PATH_INFO'].replace(rel_path, ''), request.META['QUERY_STRING']]))
     else:
         return pygal_access_denied(request, context)
 
@@ -244,13 +247,13 @@ def pygal_addtag(request, rel_path):
         tag_context_adaption(context, w, request, get_item_type(full_path) in [TYPE_IMAGE])
         if request.POST:
             tag = Tag(item=w.item)
-            form = TagForm(request.POST, instance=tag, factor_to_original=context['factor_to_original'])
+            form = TagForm(request.POST, instance=tag, factor_to_original=context.get('factor_to_original'))
             if form.is_valid():
                 form.save()
                 messages.info(request, _('Thanks for adding a Tag to %s') % w.name)
                 return redirect(get_next(request))
         else:
-            form = TagForm(factor_to_original=context['factor_to_original'])
+            form = TagForm(factor_to_original=context.get('factor_to_original'))
         context['form'] = form
         return render(request, 'pygal/tagedit.html', context=context)
 
@@ -277,7 +280,7 @@ def pygal_tagedit(request, tag_id):
         context['enable_delete_button'] = True
         if request.POST:
             if request.POST.get('save'):
-                form = TagForm(request.POST, instance=t, factor_to_original=context['factor_to_original'])
+                form = TagForm(request.POST, instance=t, factor_to_original=context.get('factor_to_original'))
                 if form.is_valid():
                     form.save()
                     messages.info(request, _('Thanks for editing Tag %(tag_id)d to %(item_name)s') % {'tag_id': tag_id, 'item_name': w.name})
@@ -287,7 +290,7 @@ def pygal_tagedit(request, tag_id):
                 messages.info(request, _('Tag %(tag_id)d of %(item_name)s has been deleted.') % {'tag_id': tag_id, 'item_name': w.name})
                 return redirect(get_next(request))
         else:
-            form = TagForm(instance=t, factor_to_original=context['factor_to_original'])
+            form = TagForm(instance=t, factor_to_original=context.get('factor_to_original'))
         context['form'] = form
         return render(request, 'pygal/tagedit.html', context=context)
 

views/userviews.py

@@ -20,6 +20,10 @@ REPEAT_ENTRY = 'repeat-main'
 SHUFFLE_ENTRY = 'shuffle-main'
 
 
+class ItemDoesNotEsistWithinParent(Exception):
+    pass
+
+
 def get_wrapper_class(full_path):
     return {
         TYPE_FOLDER: folder_view,
@@ -30,8 +34,8 @@ def get_wrapper_class(full_path):
     }.get(get_item_type(full_path), base_view)
 
 
-def get_wrapper_instance(full_path, request):
-    return get_wrapper_class(full_path)(request, full_path)
+def get_wrapper_instance(full_path, request, is_nxt_prv_item=False):
+    return get_wrapper_class(full_path)(request, full_path, is_nxt_prv_item)
 
 
 def random_copy(request, lst):
@@ -46,9 +50,10 @@ def random_copy(request, lst):
 
 
 class base_view(object):
-    def __init__(self, request, full_path):
+    def __init__(self, request, full_path, is_nxt_prv_item):
         self.request = request
         self.full_path = full_path
+        self.is_nxt_prv_item = is_nxt_prv_item
         #
         self.item = get_item_by_rel_path(pygal.get_rel_path(full_path))
         if self.item is None:
@@ -198,7 +203,12 @@ class base_view(object):
         for t in self.item.tag_set.all():
             i += 1
             edit_url = pygal.url_tagedit(self.request, t.id) if self.may_modify() else None
+            search_query = 'tag:%s' % t.text
+            search_url = pygal.url_userview(self.request, '', search=search_query)
             b.append_entry('tag-%d' % i, t.text, themes.color_icon_url(self.request, '%d.png' % (i % 10)), edit_url, True, False)
+            if pygal.get_search_query(self.request) != search_query:
+                b.append_entry_to_entry('tag-%d' % i, 'tagedit-%d' % i, _('Edit'), themes.gray_icon_url(self.request, 'edit2.png'), edit_url, True, False)
+                b.append_entry_to_entry('tag-%d' % i, 'tagsearch-%d' % i, _('Search'), themes.gray_icon_url(self.request, 'search.png'), search_url, True, False)
         return b
 
     @property
@@ -227,7 +237,10 @@ class base_view(object):
 
     @property
     def url_userview(self):
-        return pygal.url_userview(self.request, self.item.rel_path, search=pygal.SEARCH_KEEP)
+        if self.is_nxt_prv_item:
+            return pygal.url_userview(self.request, self.item.rel_path, search=pygal.SEARCH_KEEP, repeat=pygal.REPEAT_KEEP)
+        else:
+            return pygal.url_userview(self.request, self.item.rel_path, search=pygal.SEARCH_KEEP, repeat=pygal.REPEAT_DISABLE)
 
     @property
     def url_webnail(self):
@@ -251,12 +264,15 @@ class base_view(object):
         if direction not in [-1, 1]:
             raise ValueError("Parameter direction is incorrect: %s" % repr(direction))
         fp_il = random_copy(self.request, self.__parent__().sorted_fullpathlist())
-        i = fp_il.index(self.full_path)
+        try:
+            i = fp_il.index(self.full_path)
+        except ValueError as e:
+            raise ItemDoesNotEsistWithinParent(e)
         lgt = len(fp_il)
         for i in range(i + direction, i + direction * lgt, direction):
             full_path = fp_il[i % lgt]
             if get_item_type(full_path) != TYPE_FOLDER:
-                return get_wrapper_instance(full_path, self.request)
+                return get_wrapper_instance(full_path, self.request, is_nxt_prv_item=True)
         return self
 
     @property