The Rails Console

Ruby has an interactive Console, called irb

bash> irb

in this console, you can enter all ruby expressions and commands and see the result immediately. It’s ideal for trying things out manually!

Now, even better, you can get the console with the whole rails application loaded:

bash> rails console

or

bash> rails c

for short.

After you’ve created your first resource as we did in the dash, you can now try out all ActiveRecord functionality directly. E.g. try

rails c> Einsetzstellen.all

rails c> e = Einsetzstellen.new
rails c> e.fluss = "Spree"
rails c> e.save

rails c> e = Einsetzstellen.create(fluss: "Spree")

rails c> e = Einsetzstellen.first

where you need to replace “Einsetzstellen” with your own pluralized resource name, of course.

Now, start browsing the documentation to see what else you can do.