Extension Framework Game Plan

1
Extension Framework Game Plan

• VINSOL

2

• Lets validate and list the capabilities needed
  in Extension Framework through an extension which
  provides feature to mark a product as users
  favorite.

3
Favorite Product Extension Requirements

• Ability to mark and unmark a Product as favorite
• a View probably showing all products with Ability
  to mark/unmark product as favorite
• a controller action preparing the view
• a route exposing the controller / view through
  Web
• a controller action handling mark product as
  favorite
• a route exposing the controller / view through Web

4

• a controller action removing product from the
  list of favorites
• a route exposing the controller / view through
  Web
• a model interfacing with database to store
  product favorited by user
• a migration to create join table in database
• a join table storing product_id and user_id

5
Showing All Products favorited by a User

• association in User to get favorite products
• a View showing list of Favorite Products
• a controller preparing the view
• a route exposing the controller / view through Web

6
Showing Users who favorited a particular Product

• association in Product to get users who favorited
• a View showing list of Users who favorited
• a controller preparing the view
• a Route exposing the controller / view through
  Web
• Ability to test the integration of above
  mentioned requirements

7
Lets break the above requirements into two groups

• Model layer changes
• Request layer changes

8
Model Layer Changes

• Ability to mark and unmark a Product as favorite
• a model interfacing with database to store
  product favorited by user
• a migration to create join table in database
• a join table storing product_id and user_id
• Showing All Products favorited by a User
• association in User to get favorite products
• Showing Users who favorited a particular Product
• association in Product to get users who favorited

9
translates to

• Ability to mark and unmark a Product as favorite
• New Ecto Model with user_id and product_id fields
• Ecto migration to create join table storing
  product_id and user_id
• Showing All Products favorited by a User
• extending User schema to have associations as
  needed
• support functions in User Model to retrieve all
  products favorited by a user
• Showing Users who favorited a particular Product
• extending Product schema to have associations as
  needed
• support functions in Product Model too retrieve
  all users who favorited a product

10
Request Layer Changes

• Ability to mark and unmark a Product as favorite
• a View probably showing all products with ability
  to mark/unmark product as favorite
• a controller action preparing the view
• a route exposing the controller / view through
  Web
• a controller action handling mark product as
  favorite
• a route exposing the controller / view through
  Web
• a controller action removing product from the
  list of favorites
• a route exposing the controllerontroller / view
  through Web

11

• Showing All Products favorited by a User
• a View showing list of Products
• a controller preparing the view
• already route exposing the controller / view
  through Web
• Showing Users who favorited a particular Product
• a View showing list of Users
• a controller preparing the view
• a route exposing the controller / view through
  Web

12
translates to

• Ability to mark and unmark a Product as favorite
• a View probably showing all products with ability
  to mark/unmark product as favorite
• a controller with index / create / delete action
• a route exposingposing index / create / delete
  action

13

• Showing All Products favorited by a User
• a View showing list of Products
• a controller preparing the viewew
• a route exposing the controller / view through
  Web
• Showing Users who favorited a particular Product
• a View showing list of Users
• a controller preparing the view
• a route exposing throughe controller / view
  through Web

14
What we need

• way to extend schema definitions for existing
  models
• way to add new functions in existing models
• way to add routes
• way to add controller / views for newly added
  routes
• way to extend views
• way to reuse layouts
• way to reuse already available routes

15
How we attempt to solve

• Elixir Metaprogramming
• Elixir umbrella app dependencies to share and
  reuse code among Nectar Extensions using
  ExtensionManager
• Extensions as Phoenix project leveraging
  NectarCommerce

16
Thank you...