Add support for wildcard searches in text fields

#1663

app/models/artist.rb

@@ -226,8 +226,12 @@ class Artist < ActiveRecord::Base
     end
 
     def other_names_match(string)
+      if string =~ /\*/ && CurrentUser.user.is_builder?
+        where("other_names ILIKE ? ESCAPE E'\\\\'", string.to_escaped_for_sql_like)
+      else
         where("other_names_index @@ to_tsquery('danbooru', E?)", Artist.normalize_name(string).to_escaped_for_tsquery)
       end
+    end
 
     def group_name_matches(name)
       stripped_name = normalize_name(name).to_escaped_for_sql_like
@@ -241,9 +245,13 @@ class Artist < ActiveRecord::Base
 
     def any_name_matches(name)
       stripped_name = normalize_name(name).to_escaped_for_sql_like
+      if name =~ /\*/ && CurrentUser.user.is_builder?
+        where("(name LIKE ? ESCAPE E'\\\\' OR other_names LIKE ? ESCAPE E'\\\\')", stripped_name, stripped_name)
+      else
         name_for_tsquery = normalize_name(name).to_escaped_for_tsquery
         where("(name LIKE ? ESCAPE E'\\\\' OR other_names_index @@ to_tsquery('danbooru', E?))", stripped_name, name_for_tsquery)
       end
+    end
 
     def search(params)
       q = scoped

app/models/comment.rb

@@ -18,8 +18,12 @@ class Comment < ActiveRecord::Base
     end
 
     def body_matches(query)
+      if query =~ /\*/ && CurrentUser.user.is_builder?
+        where("body ILIKE ? ESCAPE E'\\\\'", query.to_escaped_for_sql_like)
+      else
         where("body_index @@ plainto_tsquery(?)", query.to_escaped_for_tsquery_split).order("comments.id DESC")
       end
+    end
 
     def hidden(user)
       where("score < ?", user.comment_threshold)

app/models/dmail.rb

@@ -99,8 +99,13 @@ class Dmail < ActiveRecord::Base
     end
 
     def search_message(query)
+      if query =~ /\*/ && CurrentUser.user.is_builder?
+        escaped_query = query.to_escaped_for_sql_like
+        where("(title ILIKE ? ESCAPE E'\\\\' OR body ILIKE ? ESCAPE E'\\\\')", escaped_query, escaped_query)
+      else
         where("message_index @@ plainto_tsquery(?)", query.to_escaped_for_tsquery_split)
       end
+    end
 
     def unread
       where("is_read = false and is_deleted = false")

app/models/forum_post.rb

@@ -17,8 +17,12 @@ class ForumPost < ActiveRecord::Base
 
   module SearchMethods
     def body_matches(body)
+      if body =~ /\*/ && CurrentUser.user.is_builder?
+        where("forum_posts.body ILIKE ? ESCAPE E'\\\\'", body.to_escaped_for_sql_like)
+      else
         where("forum_posts.text_index @@ plainto_tsquery(E?)", body.to_escaped_for_tsquery)
       end
+    end
 
     def for_user(user_id)
       where("forum_posts.creator_id = ?", user_id)

app/models/forum_topic.rb

@@ -43,8 +43,12 @@ class ForumTopic < ActiveRecord::Base
 
   module SearchMethods
     def title_matches(title)
+      if title =~ /\*/ && CurrentUser.user.is_builder?
+        where("title ILIKE ? ESCAPE E'\\\\'", title.to_escaped_for_sql_like)
+      else
         where("text_index @@ plainto_tsquery(E?)", title.to_escaped_for_tsquery_split)
       end
+    end
 
     def active
       where("is_deleted = false")

app/models/note.rb

@@ -21,8 +21,12 @@ class Note < ActiveRecord::Base
     end
 
     def body_matches(query)
+      if query =~ /\*/ && CurrentUser.user.is_builder?
+        where("body ILIKE ? ESCAPE E'\\\\'", query.to_escaped_for_sql_like)
+      else
         where("body_index @@ plainto_tsquery(E?)", query.to_escaped_for_tsquery_split)
       end
+    end
 
     def post_tags_match(query)
       joins(:post).where("posts.tag_index @@ to_tsquery('danbooru', E?)", query.to_escaped_for_tsquery_split)

app/models/wiki_page.rb

@@ -24,8 +24,12 @@ class WikiPage < ActiveRecord::Base
     end
 
     def body_matches(query)
+      if query =~ /\*/ && CurrentUser.user.is_builder?
+        where("body ILIKE ? ESCAPE E'\\\\'", query.to_escaped_for_sql_like)
+      else
         where("body_index @@ plainto_tsquery(?)", query.to_escaped_for_tsquery_split)
       end
+    end
 
     def search(params = {})
       q = scoped