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Is it possible to create routes in Rails 4 that are only executed while the application is being run in dev mode?
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Rails RESTful Design which creates seven routes all mapping to the user controller. Rails also allows you to define multiple resources in one line.
Rails routing is a two-way piece of machinery – rather as if you could turn trees into paper, and then turn paper back into trees. Specifically, it both connects incoming HTTP requests to the code in your application's controllers, and helps you generate URLs without having to hard-code them as strings.
We have to define the routes for those actions which are defined as methods in the BookController class. Open routes. rb file in library/config/ directory and edit it with the following content. The routes.
The config/database.yml file contains sections for three different environments in which Rails can run by default: The development environment is used on your development/local computer as you interact manually with the application. The test environment is used when running automated tests.
add_builtin_route: If the application is running under the development environment then this will append the route for rails/info/properties to the application routes. This route provides the detailed information such as Rails and Ruby version for public/index.html in a default Rails application.
In Rails, a resourceful route provides a mapping between HTTP verbs and URLs to controller actions. By convention, each action also maps to a specific CRUD operation in a database. A single entry in the routing file, such as: creates seven different routes in your application, all mapping to the Photos controller:
Use ENV ["GMAIL_USERNAME"] anywhere in a Rails application. Your application won’t know if it was loaded from the config/local_env.yml file or from the Unix shell. Occasionally you’ll want to use different account credentials or API keys for test and development environments.
You can test for the environment by the if statement:
if Rails.env.development?
#what you want in development
end
You can put an else statement for other environment types.
This is similar to this question: Changing a Rails route based on deployment type
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