various fixes

assets/css/views/filters.scss

@@ -25,3 +25,7 @@
     }
   }
 }
+
+.spoiler-filter-code {
+  white-space: pre-wrap;
+}

lib/philomena/filters/filter.ex

@@ -32,7 +32,7 @@ defmodule Philomena.Filters.Filter do
     filter
     |> cast(attrs, [:spoilered_tag_list, :hidden_tag_list, :description, :name, :spoilered_complex_str, :hidden_complex_str])
     |> propagate_tag_lists()
-    |> validate_required([:name])
+    |> validate_required([:name, :description])
     |> unsafe_validate_unique([:user_id, :name], Repo)
     |> validate_my_downvotes(:spoilered_complex_str)
     |> validate_my_downvotes(:hidden_complex_str)

lib/philomena/images/image.ex

@@ -138,6 +138,7 @@ defmodule Philomena.Images.Image do
     |> validate_number(:image_height, greater_than: 0, less_than_or_equal_to: 32767)
     |> validate_length(:image_name, max: 255, count: :bytes)
     |> validate_inclusion(:image_mime_type, ~W(image/gif image/jpeg image/png image/svg+xml video/webm))
+    |> unsafe_validate_unique([:image_sha512_hash], Philomena.Repo)
   end
 
   def source_changeset(image, attrs) do

lib/philomena_web/views/post_view.ex

@@ -23,9 +23,12 @@ defmodule PhilomenaWeb.PostView do
   end
 
   defp author_name(object) do
-    case Attribution.anonymous?(object) do
+    cond do
-      true  -> PhilomenaWeb.UserAttributionView.anonymous_name(object)
+      Attribution.anonymous?(object) || !object.user ->
-      false -> object.user.name
+        PhilomenaWeb.UserAttributionView.anonymous_name(object)
+
+      true ->
+        object.user.name
     end
   end
 end