I wanted to build a very small app so I can remember how Sinatra works. This is how I want the app to work. You go to the root directory of this app, and you will see a welcome sign and will be asked to fill in a box with a name of a pokemon you want to capture. You type in “Dragonite” and click a submit button, which will lead you to a page showing “You caught Dragonite”.
The app will have three files, one ruby file and two erb files for views.
You need rubygems and sinatra to run this, and set :views to ‘views’ to make the app look for view files (erb files) in ‘views’ folder.
When a user visits the root directory (get ‘/’ do), the app will render ‘index.erb’.
In index.erb, there is a form to take pokemon’s name. The form element’s action attribute specifies the url (action=”/capture”) it is sent to. In example.erb, params will be stored in the local variable, pokemon_name, and the user will be redirected to “/pokemons”/<your input>.
The line, get ‘/pokemons/:pokemon_name’ do, and the following three lines will store <your input> in the instance variable, @pokemon, and render show.erb. The rendered file, show.erb, can display the pokemon’s name using the instance variable.
To start this app, you can type ruby example.rb in your terminal. Happy Coding!
