Method: Rack::QueryParser::Params#to_h

Defined in:
lib/rack/query_parser.rb

#to_h ⇒ Object Also known as: to_params_hash

Recursively unwraps nested Params objects and constructs an object of the same shape, but using the objects’ internal representations (Ruby hashes) in place of the objects. The result is a hash consisting purely of Ruby primitives.

Mutation warning!

1. This method mutates the internal representation of the `Params`
   objects in order to save object allocations.

2. The value you get back is a reference to the internal hash
   representation, not a copy.

3. Because the `Params` object's internal representation is mutable
   through the `#[]=` method, it is not thread safe. The result of
   getting the hash representation while another thread is adding a
   key to it is non-deterministic.



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# File 'lib/rack/query_parser.rb', line 197

def to_h
  @params.each do |key, value|
    case value
    when self
      # Handle circular references gracefully.
      @params[key] = @params
    when Params
      @params[key] = value.to_h
    when Array
      value.map! { |v| v.kind_of?(Params) ? v.to_h : v }
    else
      # Ignore anything that is not a `Params` object or
      # a collection that can contain one.
    end
  end
  @params
end