First. Add some new routes: resources:highlights,:controller ads,:type Highlight resources:bargains,:controller ads,:type Bargain. I would have a controller (and maybe views) for each of your resource types. So add a controller for ContactEmail one for ContactLetter etc. This post is about Single Table Inheritance with Rails 4. We are going to learn how to setup a common controller for STI models.
In the second part, we will see how we can present our inherited models to the world through a single controller and how to configure the routes to do so. This may not always apply, but I have yet to see a case where STI works well with multiple controllers. And how do I write controllers and actions that made the most sense? I’d tried having a column name called type but Rails yelled at me, so I renamed it.
Hi all! I have ContactRoutes subclassed as PhoneContactRoute, AddressContactRoute and so on. Now, I’m thinking about my controllers, and I am wondering if I should be creating a single ContactRoutesController or have many controllers, one per subclass. Rails supports Single Table Inheritance (STI). In this pattern, the superclass is the only model with an associated table in the database, and any object of that class and any subclass is stored in that same table. Each subclass needs its own controller and map.resources entry in routes.rb. Single-table inheritance (STI) is the practice of storing multiple types of values in the same table, where each record includes a field indicating its type, and the table includes a column for every field of all the types it stores. Rails adds to the problem by tightly coupling your model API to the schema, and encouraging you to use this API directly from controllers and views.
Single Table Inheritance With Rails 4
Notes on Single Table Inheritance (STI) in Rails 3.0. Requests to the parent controller work fine with an empty database, but a number of drawbacks become immediately clear once we start adding data:. These employee routes are not defined, and there is no employee controller so the actions aren’t defined either. Alex Reisner has a post Single Table Inheritance in Rails, in which he advocates against mapping the resources of the child classes to the parent class in routes. In this post you will read how to use rails model generators for 100. There are some people who give advice to not use rails generators and create models, controllers and etc. things manually. It will inherit generating class from passed name to achieve STI (sing table inheritance):. I’ve tried the following in my index controller but no matter what I put for the type it returns all users regardless of type. I have implemented single table inheritance for a person classclass Person ActiveRecord::Baseendclass Teacher Personendclass Student Personendclass Outsider PersonendAnd the create person seems to work creating Teacher, Student or P. Persons rails generate controller Teachers rails generate controller Students rails generate controller Outsiders then in routes. Definitive Guide to Single Table Inheritance (Page 1) – Models and Database – Rails Forum – Ruby on Rails Help and Discussion Forum – A forum for Ruby on Rails users.
Rest And Sti: One Or Many Controllers
Devise models and Single table inheritance and custom class methods. It’s kinda like how ever controller inherits ApplicationController. Ruby on Rails supports Single Table Inheritance. And now, in your controller you can look up all users that are administrators by using the following bit of code:. If you ever think of using Single Table Inheritance on Rails, forget about it. The first thing I want is that all users share the same controller: show, index, destroy,. The implementation of STI in Rails is so trivial as to make gotchas nearly unavoidable. In all controllers that reference the STI subclasses, I had to do the following:.
Basically, we will show an index view of parent sti controller, in which member actions such as edit, show,delete are linking to corresponding specific sti controller. Rails: Unit Testing Rails Single-Table Inheritance Models. 11 March 2009 on rails, programming, tips, ruby, uncategorized, unit testing, single table inheritance I recently spent not an insignificant amount of time trying to get my unit tests to comply with Rails’ single-table inheritance.