Refactoring Grape API methods into normal controllers & other things

app/controllers/accounts_controller.rb

@@ -0,0 +1,16 @@
+class AccountsController < ApplicationController
+  before_action :set_account
+
+  def show
+    respond_to do |format|
+      format.html
+      format.atom
+    end
+  end
+
+  private
+
+  def set_account
+    @account = Account.find_by!(username: params[:username], domain: nil)
+  end
+end