Getting started with railsthis guide covers getting up and running with ruby on rails after reading this guide you will know.
Ruby on rails controller.
The rails controller is the logical center of your application.
Rails routing from the outside inthis guide covers the user facing features of rails routing after reading this guide you will know.
It includes everything you need to build fantastic applications and you can learn it with the support of our large friendly community.
Testing rails applicationsthis guide covers built in mechanisms in rails for testing your application after reading this guide you will know.
So we re gonna do rails g controller greeter.
The basic principles of mvc model view controller and restful design.
And the hello is the action name and it s also going to be the name of a view.
How to quickly generate the starting pieces of a rails.
Ruby on rails controller methods.
How to interpret the code in config routes rb.
Rails g scaffold books.
Views for every standard controller action index edit show new a new route.
How to use the rails scaffold command.
Class worldcontroller applicationcontroller def hello render text hello world end.
Other popular testing approaches and plugins.
And a migration to prepare your database.
Each public method in a controller is callable by the standard url scheme controller action.
An example of scaffolding a project for a website about books would look like this.
When your application receives a request the routing will determine which controller and action to run then rails creates an instance of that controller and runs the method with the same name as the action.
Ruby on rails makes it much easier and more fun.
Let s see an example.
The general layout of a rails application.
Notice that you are capitalizing book and using the singular form.
We re gonna generate a greeter controller.
This is a rails.
The controller is also a home to a number of important ancillary services.
A controller is a ruby class which inherits from applicationcontroller and has methods just like any other class.
When your application receives a request the routing will determine which controller and action to run then rails creates an instance of that controller and runs the method with the same name as the action.
So you re gonna see here that rails go off generating a control which is gonna be called the name of the control we gave it controller.
How to write unit functional integration and system tests for your application.
It coordinates the interaction between the user the views and the model.
How to construct your own routes using either the preferred resourceful style or the match method.
So let s see how that works.
Latest version rails 6 0 3 3 released september 10 2020.
