week-8-learning-objectives.md

Week 8 Learning Objectives

###Migrations

• Add and remove columns from the database.
• Alter an existing column.
• Explain when it is okay to edit a migration and when it is okay to edit the schema.

###Associations

• Describe how relational databases can be used to create associations between resources.
• Create one to-many-model relationships in Rails.
• Create many to-many-model relationships in Rails.

###Cookies and Sessions

• Describe the request and response cycle's relationship to the stateless web.
• Discuss and use an HTTP Cookie in a web application.
• Differentiate between an HTTP Cookie and a Session.

###Rails Auth

• Build routes, controllers, and views for user sign up, log in, and logout.
• Implement a User model that securely stores hashed passwords with has_secure_password.
• Compare and contrast authentication and authorization.

###Asset Pipeline

• Explain benefits of using the Rails asset pipeline.
• Describe how the asset pipeline works.
• Require custom and third-party assets in Rails.

###Error Handling and Validations

• Use built-in ActiveRecord validation methods to validate database entries.
• Display errors in the view using Rails flash messages.
• Set breakpoints to check your assumptions.