Improve completions

app/controllers/completions_controller.rb

@@ -22,7 +22,7 @@ class CompletionsController < ApplicationController
       redirect_to contest_path(@contest)
     else
       logger = Logger.new(STDOUT)
-      logger.info(@completion.errors.full_messages)
+      logger.info(@completion.errors)
       @title = "New completion"
       render :new, status: :unprocessable_entity
     end
@@ -42,7 +42,11 @@ class CompletionsController < ApplicationController
 
   def destroy
     @completion.destroy
-    redirect_to contest_path(@contest)
+    if params[:contestant_id]
+      redirect_to contest_contestant_path(@contest, params[:contestant_id])
+    else
+      redirect_to contest_path(@contest)
+    end
   end
 
   private