prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  adding multiple answer text to answer page
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `adhocracy4/comments_async/serializers.py`
  Content:
  ```
  1 from django.conf import settings
  2 from django.utils.translation import ugettext as _
  3 from easy_thumbnails.files import get_thumbnailer
  4 from rest_framework import serializers
  5 
  6 from adhocracy4.comments.models import Comment
  7 
  8 
  9 class CommentSerializer(serializers.ModelSerializer):
  10     """Default Serializer for the comments."""
  11 
  12     user_name = serializers.SerializerMethodField()
  13     user_pk = serializers.SerializerMethodField()
  14     user_profile_url = serializers.SerializerMethodField()
  15     user_image = serializers.SerializerMethodField()
  16     is_deleted = serializers.SerializerMethodField()
  17     ratings = serializers.SerializerMethodField()
  18     is_moderator = serializers.SerializerMethodField()
  19 
  20     class Meta:
  21         model = Comment
  22         read_only_fields = ('modified', 'created', 'id',
  23                             'user_name', 'user_pk', 'user_image',
  24                             'ratings', 'content_type', 'object_pk')
  25         exclude = ('creator', 'is_censored', 'is_removed')
  26 
  27     def to_representation(self, instance):
  28         """
  29         Create a dictionary form categories.
  30 
  31         Gets the categories and adds them along with their values
  32         to a dictionary.
  33         """
  34         ret = super().to_representation(instance)
  35         categories = {}
  36         if ret['comment_categories']:
  37             category_choices = getattr(settings,
  38                                        'A4_COMMENT_CATEGORIES', '')
  39             if category_choices:
  40                 category_choices = dict((x, str(y)) for x, y
  41                                         in category_choices)
  42             category_list = ret['comment_categories'].strip('[]').split(',')
  43             for category in category_list:
  44                 if category in category_choices:
  45                     categories[category] = category_choices[category]
  46                 else:
  47                     categories[category] = category
  48         ret['comment_categories'] = categories
  49         return ret
  50 
  51     def to_internal_value(self, data):
  52         data = super().to_internal_value(data)
  53         if 'comment_categories' in data:
  54             value = data.get('comment_categories')
  55             if value == '' or value == '[]':
  56                 raise serializers.ValidationError({
  57                     'comment_categories': _('Please choose a category')
  58                 })
  59         return data
  60 
  61     def get_user_pk(self, obj):
  62         if (obj.is_censored or obj.is_removed):
  63             return -1
  64         return str(obj.creator.id)
  65 
  66     def get_user_profile_url(self, obj):
  67         if obj.is_censored or obj.is_removed:
  68             return ''
  69         try:
  70             return obj.creator.get_absolute_url()
  71         except AttributeError:
  72             return ''
  73 
  74     def get_user_name(self, obj):
  75         """Don't show username if comment is marked removed or censored."""
  76         if(obj.is_censored or obj.is_removed):
  77             return _('unknown user')
  78         return obj.creator.get_short_name()
  79 
  80     def get_user_image(self, obj):
  81         """Load small thumbnail images for user images."""
  82         if(obj.is_censored or obj.is_removed):
  83             return None
  84         try:
  85             if obj.creator.avatar:
  86                 avatar = get_thumbnailer(obj.creator.avatar)['avatar']
  87                 return avatar.url
  88         except AttributeError:
  89             pass
  90         return None
  91 
  92     def get_is_moderator(self, obj):
  93         return obj.project.has_moderator(obj.creator)
  94 
  95     def get_is_deleted(self, obj):
  96         """Return true if one of the flags is set."""
  97         return (obj.is_censored or obj.is_removed)
  98 
  99     def get_ratings(self, comment):
  100         """
  101         Get positive and negative rating count.
  102 
  103         As well as info on the request users rating
  104         """
  105         user = self.context['request'].user
  106         positive_ratings = comment.ratings.filter(value=1).count()
  107         negative_ratings = comment.ratings.filter(value=-1).count()
  108 
  109         if user.is_authenticated:
  110             user_rating = comment.ratings.filter(creator=user).first()
  111         else:
  112             user_rating = None
  113 
  114         if user_rating:
  115             user_rating_value = user_rating.value
  116             user_rating_id = user_rating.pk
  117         else:
  118             user_rating_value = None
  119             user_rating_id = None
  120 
  121         result = {
  122             'positive_ratings': positive_ratings,
  123             'negative_ratings': negative_ratings,
  124             'current_user_rating_value': user_rating_value,
  125             'current_user_rating_id': user_rating_id
  126         }
  127 
  128         return result
  129 
  130 
  131 class CommentListSerializer(CommentSerializer):
  132     """Serializer for the comments to be used when viewed as list."""
  133 
  134     comment = serializers.SerializerMethodField()
  135 
  136     def get_comment(self, obj):
  137         if obj.is_removed:
  138             return _('deleted by creator')
  139         if obj.is_censored:
  140             return _('deleted by moderator')
  141         return obj.comment
  142 
  143 
  144 class ThreadSerializer(CommentSerializer):
  145     """Serializes a comment including child comment (replies)."""
  146 
  147     child_comments = CommentSerializer(many=True, read_only=True)
  148 
  149 
  150 class ThreadListSerializer(CommentListSerializer):
  151     """
  152     Serializes comments when viewed.
  153 
  154     As list including child comment (replies).
  155     """
  156 
  157     child_comments = CommentListSerializer(many=True, read_only=True)
  158
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/adhocracy4/comments_async/serializers.py b/adhocracy4/comments_async/serializers.py
  --- a/adhocracy4/comments_async/serializers.py
  +++ b/adhocracy4/comments_async/serializers.py
  @@ -21,7 +21,8 @@
           model = Comment
           read_only_fields = ('modified', 'created', 'id',
                               'user_name', 'user_pk', 'user_image',
  -                            'ratings', 'content_type', 'object_pk')
  +                            'user_image_fallback', 'ratings',
  +                            'content_type', 'object_pk')
           exclude = ('creator', 'is_censored', 'is_removed')
   
       def to_representation(self, instance):
  @@ -77,6 +78,17 @@
               return _('unknown user')
           return obj.creator.get_short_name()
   
  +    def get_user_image_fallback(self, obj):
  +        """Load small thumbnail images for default user images."""
  +        if(obj.is_censored or obj.is_removed):
  +            return None
  +        try:
  +            if obj.creator.avatar_fallback:
  +                return obj.creator.avatar_fallback
  +        except AttributeError:
  +            pass
  +        return None
  +
       def get_user_image(self, obj):
           """Load small thumbnail images for user images."""
           if(obj.is_censored or obj.is_removed):
  @@ -87,7 +99,7 @@
                   return avatar.url
           except AttributeError:
               pass
  -        return None
  +        return self.get_user_image_fallback(obj)
   
       def get_is_moderator(self, obj):
           return obj.project.has_moderator(obj.creator)
  
verification_info: {"golden_diff": "diff --git a/adhocracy4/comments_async/serializers.py b/adhocracy4/comments_async/serializers.py\n--- a/adhocracy4/comments_async/serializers.py\n+++ b/adhocracy4/comments_async/serializers.py\n@@ -21,7 +21,8 @@\n         model = Comment\n         read_only_fields = ('modified', 'created', 'id',\n                             'user_name', 'user_pk', 'user_image',\n-                            'ratings', 'content_type', 'object_pk')\n+                            'user_image_fallback', 'ratings',\n+                            'content_type', 'object_pk')\n         exclude = ('creator', 'is_censored', 'is_removed')\n \n     def to_representation(self, instance):\n@@ -77,6 +78,17 @@\n             return _('unknown user')\n         return obj.creator.get_short_name()\n \n+    def get_user_image_fallback(self, obj):\n+        \"\"\"Load small thumbnail images for default user images.\"\"\"\n+        if(obj.is_censored or obj.is_removed):\n+            return None\n+        try:\n+            if obj.creator.avatar_fallback:\n+                return obj.creator.avatar_fallback\n+        except AttributeError:\n+            pass\n+        return None\n+\n     def get_user_image(self, obj):\n         \"\"\"Load small thumbnail images for user images.\"\"\"\n         if(obj.is_censored or obj.is_removed):\n@@ -87,7 +99,7 @@\n                 return avatar.url\n         except AttributeError:\n             pass\n-        return None\n+        return self.get_user_image_fallback(obj)\n \n     def get_is_moderator(self, obj):\n         return obj.project.has_moderator(obj.creator)\n", "issue": "adding multiple answer text to answer page\n\n", "before_files": [{"content": "from django.conf import settings\nfrom django.utils.translation import ugettext as _\nfrom easy_thumbnails.files import get_thumbnailer\nfrom rest_framework import serializers\n\nfrom adhocracy4.comments.models import Comment\n\n\nclass CommentSerializer(serializers.ModelSerializer):\n    \"\"\"Default Serializer for the comments.\"\"\"\n\n    user_name = serializers.SerializerMethodField()\n    user_pk = serializers.SerializerMethodField()\n    user_profile_url = serializers.SerializerMethodField()\n    user_image = serializers.SerializerMethodField()\n    is_deleted = serializers.SerializerMethodField()\n    ratings = serializers.SerializerMethodField()\n    is_moderator = serializers.SerializerMethodField()\n\n    class Meta:\n        model = Comment\n        read_only_fields = ('modified', 'created', 'id',\n                            'user_name', 'user_pk', 'user_image',\n                            'ratings', 'content_type', 'object_pk')\n        exclude = ('creator', 'is_censored', 'is_removed')\n\n    def to_representation(self, instance):\n        \"\"\"\n        Create a dictionary form categories.\n\n        Gets the categories and adds them along with their values\n        to a dictionary.\n        \"\"\"\n        ret = super().to_representation(instance)\n        categories = {}\n        if ret['comment_categories']:\n            category_choices = getattr(settings,\n                                       'A4_COMMENT_CATEGORIES', '')\n            if category_choices:\n                category_choices = dict((x, str(y)) for x, y\n                                        in category_choices)\n            category_list = ret['comment_categories'].strip('[]').split(',')\n            for category in category_list:\n                if category in category_choices:\n                    categories[category] = category_choices[category]\n                else:\n                    categories[category] = category\n        ret['comment_categories'] = categories\n        return ret\n\n    def to_internal_value(self, data):\n        data = super().to_internal_value(data)\n        if 'comment_categories' in data:\n            value = data.get('comment_categories')\n            if value == '' or value == '[]':\n                raise serializers.ValidationError({\n                    'comment_categories': _('Please choose a category')\n                })\n        return data\n\n    def get_user_pk(self, obj):\n        if (obj.is_censored or obj.is_removed):\n            return -1\n        return str(obj.creator.id)\n\n    def get_user_profile_url(self, obj):\n        if obj.is_censored or obj.is_removed:\n            return ''\n        try:\n            return obj.creator.get_absolute_url()\n        except AttributeError:\n            return ''\n\n    def get_user_name(self, obj):\n        \"\"\"Don't show username if comment is marked removed or censored.\"\"\"\n        if(obj.is_censored or obj.is_removed):\n            return _('unknown user')\n        return obj.creator.get_short_name()\n\n    def get_user_image(self, obj):\n        \"\"\"Load small thumbnail images for user images.\"\"\"\n        if(obj.is_censored or obj.is_removed):\n            return None\n        try:\n            if obj.creator.avatar:\n                avatar = get_thumbnailer(obj.creator.avatar)['avatar']\n                return avatar.url\n        except AttributeError:\n            pass\n        return None\n\n    def get_is_moderator(self, obj):\n        return obj.project.has_moderator(obj.creator)\n\n    def get_is_deleted(self, obj):\n        \"\"\"Return true if one of the flags is set.\"\"\"\n        return (obj.is_censored or obj.is_removed)\n\n    def get_ratings(self, comment):\n        \"\"\"\n        Get positive and negative rating count.\n\n        As well as info on the request users rating\n        \"\"\"\n        user = self.context['request'].user\n        positive_ratings = comment.ratings.filter(value=1).count()\n        negative_ratings = comment.ratings.filter(value=-1).count()\n\n        if user.is_authenticated:\n            user_rating = comment.ratings.filter(creator=user).first()\n        else:\n            user_rating = None\n\n        if user_rating:\n            user_rating_value = user_rating.value\n            user_rating_id = user_rating.pk\n        else:\n            user_rating_value = None\n            user_rating_id = None\n\n        result = {\n            'positive_ratings': positive_ratings,\n            'negative_ratings': negative_ratings,\n            'current_user_rating_value': user_rating_value,\n            'current_user_rating_id': user_rating_id\n        }\n\n        return result\n\n\nclass CommentListSerializer(CommentSerializer):\n    \"\"\"Serializer for the comments to be used when viewed as list.\"\"\"\n\n    comment = serializers.SerializerMethodField()\n\n    def get_comment(self, obj):\n        if obj.is_removed:\n            return _('deleted by creator')\n        if obj.is_censored:\n            return _('deleted by moderator')\n        return obj.comment\n\n\nclass ThreadSerializer(CommentSerializer):\n    \"\"\"Serializes a comment including child comment (replies).\"\"\"\n\n    child_comments = CommentSerializer(many=True, read_only=True)\n\n\nclass ThreadListSerializer(CommentListSerializer):\n    \"\"\"\n    Serializes comments when viewed.\n\n    As list including child comment (replies).\n    \"\"\"\n\n    child_comments = CommentListSerializer(many=True, read_only=True)\n", "path": "adhocracy4/comments_async/serializers.py"}], "after_files": [{"content": "from django.conf import settings\nfrom django.utils.translation import ugettext as _\nfrom easy_thumbnails.files import get_thumbnailer\nfrom rest_framework import serializers\n\nfrom adhocracy4.comments.models import Comment\n\n\nclass CommentSerializer(serializers.ModelSerializer):\n    \"\"\"Default Serializer for the comments.\"\"\"\n\n    user_name = serializers.SerializerMethodField()\n    user_pk = serializers.SerializerMethodField()\n    user_profile_url = serializers.SerializerMethodField()\n    user_image = serializers.SerializerMethodField()\n    is_deleted = serializers.SerializerMethodField()\n    ratings = serializers.SerializerMethodField()\n    is_moderator = serializers.SerializerMethodField()\n\n    class Meta:\n        model = Comment\n        read_only_fields = ('modified', 'created', 'id',\n                            'user_name', 'user_pk', 'user_image',\n                            'user_image_fallback', 'ratings',\n                            'content_type', 'object_pk')\n        exclude = ('creator', 'is_censored', 'is_removed')\n\n    def to_representation(self, instance):\n        \"\"\"\n        Create a dictionary form categories.\n\n        Gets the categories and adds them along with their values\n        to a dictionary.\n        \"\"\"\n        ret = super().to_representation(instance)\n        categories = {}\n        if ret['comment_categories']:\n            category_choices = getattr(settings,\n                                       'A4_COMMENT_CATEGORIES', '')\n            if category_choices:\n                category_choices = dict((x, str(y)) for x, y\n                                        in category_choices)\n            category_list = ret['comment_categories'].strip('[]').split(',')\n            for category in category_list:\n                if category in category_choices:\n                    categories[category] = category_choices[category]\n                else:\n                    categories[category] = category\n        ret['comment_categories'] = categories\n        return ret\n\n    def to_internal_value(self, data):\n        data = super().to_internal_value(data)\n        if 'comment_categories' in data:\n            value = data.get('comment_categories')\n            if value == '' or value == '[]':\n                raise serializers.ValidationError({\n                    'comment_categories': _('Please choose a category')\n                })\n        return data\n\n    def get_user_pk(self, obj):\n        if (obj.is_censored or obj.is_removed):\n            return -1\n        return str(obj.creator.id)\n\n    def get_user_profile_url(self, obj):\n        if obj.is_censored or obj.is_removed:\n            return ''\n        try:\n            return obj.creator.get_absolute_url()\n        except AttributeError:\n            return ''\n\n    def get_user_name(self, obj):\n        \"\"\"Don't show username if comment is marked removed or censored.\"\"\"\n        if(obj.is_censored or obj.is_removed):\n            return _('unknown user')\n        return obj.creator.get_short_name()\n\n    def get_user_image_fallback(self, obj):\n        \"\"\"Load small thumbnail images for default user images.\"\"\"\n        if(obj.is_censored or obj.is_removed):\n            return None\n        try:\n            if obj.creator.avatar_fallback:\n                return obj.creator.avatar_fallback\n        except AttributeError:\n            pass\n        return None\n\n    def get_user_image(self, obj):\n        \"\"\"Load small thumbnail images for user images.\"\"\"\n        if(obj.is_censored or obj.is_removed):\n            return None\n        try:\n            if obj.creator.avatar:\n                avatar = get_thumbnailer(obj.creator.avatar)['avatar']\n                return avatar.url\n        except AttributeError:\n            pass\n        return self.get_user_image_fallback(obj)\n\n    def get_is_moderator(self, obj):\n        return obj.project.has_moderator(obj.creator)\n\n    def get_is_deleted(self, obj):\n        \"\"\"Return true if one of the flags is set.\"\"\"\n        return (obj.is_censored or obj.is_removed)\n\n    def get_ratings(self, comment):\n        \"\"\"\n        Get positive and negative rating count.\n\n        As well as info on the request users rating\n        \"\"\"\n        user = self.context['request'].user\n        positive_ratings = comment.ratings.filter(value=1).count()\n        negative_ratings = comment.ratings.filter(value=-1).count()\n\n        if user.is_authenticated:\n            user_rating = comment.ratings.filter(creator=user).first()\n        else:\n            user_rating = None\n\n        if user_rating:\n            user_rating_value = user_rating.value\n            user_rating_id = user_rating.pk\n        else:\n            user_rating_value = None\n            user_rating_id = None\n\n        result = {\n            'positive_ratings': positive_ratings,\n            'negative_ratings': negative_ratings,\n            'current_user_rating_value': user_rating_value,\n            'current_user_rating_id': user_rating_id\n        }\n\n        return result\n\n\nclass CommentListSerializer(CommentSerializer):\n    \"\"\"Serializer for the comments to be used when viewed as list.\"\"\"\n\n    comment = serializers.SerializerMethodField()\n\n    def get_comment(self, obj):\n        if obj.is_removed:\n            return _('deleted by creator')\n        if obj.is_censored:\n            return _('deleted by moderator')\n        return obj.comment\n\n\nclass ThreadSerializer(CommentSerializer):\n    \"\"\"Serializes a comment including child comment (replies).\"\"\"\n\n    child_comments = CommentSerializer(many=True, read_only=True)\n\n\nclass ThreadListSerializer(CommentListSerializer):\n    \"\"\"\n    Serializes comments when viewed.\n\n    As list including child comment (replies).\n    \"\"\"\n\n    child_comments = CommentListSerializer(many=True, read_only=True)\n", "path": "adhocracy4/comments_async/serializers.py"}]}