post replacements: add tag match field to search form.

app/models/post_replacement.rb

@@ -69,6 +69,10 @@ class PostReplacement < ApplicationRecord
   end
 
   module SearchMethods
+    def post_tags_match(query)
+      PostQueryBuilder.new(query).build(self.joins(:post))
+    end
+
     def search(params = {})
       q = all
 
@@ -88,6 +92,10 @@ class PostReplacement < ApplicationRecord
         q = q.where(post_id: params[:post_id].split(",").map(&:to_i))
       end
 
+      if params[:post_tags_match].present?
+        q = q.post_tags_match(params[:post_tags_match])
+      end
+
       q = q.order("created_at DESC")
 
       q

app/views/post_replacements/index.html.erb

@@ -6,6 +6,7 @@
 
     <%= simple_form_for(:search, url: post_replacements_path, method: :get, defaults: { required: false }, html: { class: "inline-form" }) do |f| %>
       <%= f.input :creator_name, label: "Replacer", input_html: { value: params[:search][:creator_name] } %>
+      <%= f.input :post_tags_match, label: "Tags", input_html: { value: params[:search][:post_tags_match] } %>
       <%= f.submit "Search" %>
     <% end %>