yb66 / sinatra-default_parameters

Extends the request context with a helper to give a quick and simple way to set defaults for the params helper on a per route basis.

Sinatra Default Parameters

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What?

A quick and simple way to set defaults for the params helper on a per route basis.

Why?

I was inspired to make this into a gem after answering this question on StackOverflow. I liked the look of it and thought I'll use this again, hence a gem.

How?

It's quite simple.

require 'sinatra/default_parameters'

helpers Sinatra::DefaultParameters # This too if you're using modular style apps.

get "/" do
  set_defaults a: 1, b: 2, c: 3
  params.inspect
end

# GET "/"
# => {"a"=>1, "b"=>2, "c"=>3}
# GET "/?a=7&b=4"
# => {"a"=>"7", "b"=>"4", "c"=>3}
# GET "/?d=4"
# => {"a"=>1, "b"=>2, "c"=>3, "d"=>"4"}
# GET "/?a=7&b=4&d=4"
# => {"a"=>"7", "b"=>"4", "c"=>3, "d"=>"4"}

Simples, innit.

Note: As you can see from the examples it doesn't do any type casting or other checks, it just does this one very small thing, the rest is up to you.

Licence

See the LICENCE file.