/post_replacements: allow updating image metadata in past replacements.

app/controllers/post_replacements_controller.rb

@@ -14,6 +14,13 @@ class PostReplacementsController < ApplicationController
     respond_with(@post_replacement, location: @post)
   end
 
+  def update
+    @post_replacement = PostReplacement.find(params[:id])
+    @post_replacement.update(update_params)
+
+    respond_with(@post_replacement)
+  end
+
   def index
     params[:search][:post_id] = params.delete(:post_id) if params.has_key?(:post_id)
     @post_replacements = PostReplacement.search(params[:search]).paginate(params[:page], limit: params[:limit])
@@ -25,4 +32,12 @@ private
   def create_params
     params.require(:post_replacement).permit(:replacement_url, :replacement_file, :final_source, :tags)
   end
+
+  def update_params
+    params.require(:post_replacement).permit(
+      :file_ext_was, :file_size_was, :image_width_was, :image_height_was, :md5_was,
+      :file_ext, :file_size, :image_width, :image_height, :md5,
+      :original_url, :replacement_url
+    )
+  end
 end