LHH questions

LHH answers

• Rails - A server is already running
• For rails app, how to show multiple flash[:notice] in html?
• Rails 4: check if a local variable exists and is true in a partial
• undefined method `raw' for controller for rails 4
• Rails what's difference in unique index and validates_uniqueness_of
• delayed_job: 'undefined method' error when using handle_asynchronously