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Contents
class Roda
module RodaPlugins
# The indifferent_params plugin adds a +params+ instance
# method which returns a copy of the request params hash
# that will automatically convert symbols to strings.
# Example:
#
# plugin :indifferent_params
#
# route do |r|
# params[:foo]
# end
#
# The params hash is initialized lazily, so you only pay
# the penalty of copying the request params if you call
# the +params+ method.
#
# Note that there is a rack-indifferent gem that
# automatically makes rack use indifferent params. Using
# rack-indifferent is faster and has some other minor
# advantages over the indifferent_params plugin, though
# it affects rack itself instead of just the Roda app that
# you load the plugin into.
module IndifferentParams
module InstanceMethods
# A copy of the request params that will automatically
# convert symbols to strings.
def params
@_params ||= indifferent_params(request.params)
end
private
# Recursively process the request params and convert
# hashes to support indifferent access, leaving
# other values alone.
def indifferent_params(params)
case params
when Hash
hash = Hash.new{|h, k| h[k.to_s] if Symbol === k}
params.each{|k, v| hash[k] = indifferent_params(v)}
hash
when Array
params.map{|x| indifferent_params(x)}
else
params
end
end
end
end
register_plugin(:indifferent_params, IndifferentParams)
end
end
Version data entries
10 entries across 10 versions & 1 rubygems