Hello Contexts

Code examples and a demonstration apps built in Phoenix 1.3 while reading about contexts in the Phoenix Guides. This is part of larger effort found here.

• Contexts
  • Overview [ guide ]
  • Adding an Accounts Context With Generators [ guide | code:controller | code:context | code:schema | demo ]
  • In-context Relationships: e.g. Credential belongs_to User
    • Overview [ guide ]
    • mix phx.gen.context Accounts Credential...[ code ]
    • has_one/belongs_to [ code:belongs_to | code:has_one ]
    • load association data [ code ]
    • add association changeset [ code ]
    • add association to user edit/create form [ code ]
    • add user.credential.email association to user show [ code | demo ]
  • Adding Account Functions: e.g. Sessions
    • Overview [ guide | demo ]
    • Add authenticate_by_email_password function to accounts [ code ]
    • Create session controller [ code | code ]
    • Add sessions to router [ code ]
    • Add an authentication plug to the router [ code ]
    • Create session view and template [ code | code ]
  • Cross-context dependencies: e.g. CMS.Author <-> Accounts.User
    • Overview [guide]
    • New CMS context
      • Generate CMS context, Page schema and web modules [code]
      • Add to router [code]
      • Generate an Author schema [code]
      • Add an author_id field to the pages table [code]
  • Cross-context data: e.g. CMS.Author <-> Accounts.User
    • Overview [ guide | demo ]
    • Tie pages to authors and author to users
      • page belongs_to author [code]
      • author has_many pages [code]
      • author belongs_to user [code]
    • Require an author on pages
      • preload author on page fetch [code]
      • persist author data [code]
      • ensure author exists [code]
      • add require_existing_author plug to CMS.PageController [code | code]
      • make use of current_author in the connection assigns from require_existing_author plug [code]
      • display author when showing a page [ code | code | demo ]
  • Adding CMS functions: e.g. page views
    • Overview [ guide demo]
    • add an inc_page_views function [code]
    • use the inc_page_views function in the controller [code]
    • see page views increment with each refresh! [demo]

To start your Phoenix server:

• Install dependencies with mix deps.get
• Create and migrate your database with mix ecto.create && mix ecto.migrate
• Install Node.js dependencies with cd assets && npm install
• Start Phoenix endpoint with mix phx.server

Now you can visit localhost:4000 from your browser.

Ready to run in production? Please check our deployment guides.

Learn more

• Official website: http://www.phoenixframework.org/
• Guides: http://phoenixframework.org/docs/overview
• Docs: https://hexdocs.pm/phoenix
• Mailing list: http://groups.google.com/group/phoenix-talk
• Source: https://github.com/phoenixframework/phoenix