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Contents
module ActionDispatch
module Http
class ParameterFilter
def initialize(filters)
@filters = filters
end
def filter(params)
if enabled?
compiled_filter.call(params)
else
params.dup
end
end
private
def enabled?
@filters.present?
end
def compiled_filter
@compiled_filter ||= begin
regexps, blocks = compile_filter
lambda do |original_params|
filtered_params = {}
original_params.each do |key, value|
if regexps.find { |r| key =~ r }
value = '[FILTERED]'
elsif value.is_a?(Hash)
value = filter(value)
elsif value.is_a?(Array)
value = value.map { |v| v.is_a?(Hash) ? filter(v) : v }
elsif blocks.present?
key = key.dup
value = value.dup if value.duplicable?
blocks.each { |b| b.call(key, value) }
end
filtered_params[key] = value
end
filtered_params
end
end
end
def compile_filter
strings, regexps, blocks = [], [], []
@filters.each do |item|
case item
when NilClass
when Proc
blocks << item
when Regexp
regexps << item
else
strings << item.to_s
end
end
regexps << Regexp.new(strings.join('|'), true) unless strings.empty?
[regexps, blocks]
end
end
end
end
Version data entries
67 entries across 67 versions & 1 rubygems