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Contents
require 'sinatra/base'
module Sinatra
# = Sinatra::RequiredParams
#
# Ensure required query parameters
#
# == Usage
#
# Set required query parameter keys in the argument.
# It'll halt with 400 if requried keys don't exist.
#
# get '/simple_keys' do
# required_params :p1, :p2
# end
#
# Complicated pattern is also fine.
#
# get '/complicated_keys' do
# required_params :p1, :p2 => [:p3, :p4]
# end
#
# === Classic Application
#
# In a classic application simply require the helpers, and start using them:
#
# require "sinatra"
# require "sinatra/required_params"
#
# # The rest of your classic application code goes here...
#
# === Modular Application
#
# In a modular application you need to require the helpers, and then tell
# the application to use them:
#
# require "sinatra/base"
# require "sinatra/required_params"
#
# class MyApp < Sinatra::Base
# helpers Sinatra::RequiredParams
#
# # The rest of your modular application code goes here...
# end
#
module RequiredParams
def required_params(*keys)
_required_params(params, *keys)
end
private
def _required_params(p, *keys)
keys.each do |key|
if key.is_a?(Hash)
_required_params(p, *key.keys)
key.each do |k, v|
_required_params(p[k.to_s], v)
end
elsif key.is_a?(Array)
_required_params(p, *key)
else
halt 400 unless p.has_key?(key.to_s)
end
end
true
end
end
helpers RequiredParams
end
Version data entries
9 entries across 9 versions & 1 rubygems