# -*- encoding: utf-8 -*-

module Github

# Allows you to specify parameters keys which will be preserved

# in parameters hash and its subhashes. Any keys from the nested

# hash that do not match will be removed.

module ParameterFilter

# Removes any keys from nested hashes that don't match predefiend keys

#

def filter!(keys, params, options={:recursive => true}) # :nodoc:

case params

when Hash, ParamsHash

params.keys.each do |k, v|

unless (keys.include?(k) or Github::Validations::VALID_API_KEYS.include?(k))

params.delete(k)

else

filter!(keys, params[k]) if options[:recursive]

end

end

when Array

params.map! do |el|

filter!(keys, el) if options[:recursive]

end

else

params

end

return params

end

end # Filter

end # Github