method

extract_value

v7.1.3.2 - Show latest stable - 0 notes - Class: Parameters

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What's this?

extract_value(key, delimiter: "_") public

Returns parameter value for the given key separated by delimiter.

params = ActionController::Parameters.new(id: "1_123", tags: "ruby,rails")
params.extract_value(:id) # => ["1", "123"]
params.extract_value(:tags, delimiter: ",") # => ["ruby", "rails"]
params.extract_value(:non_existent_key) # => nil

Note that if the given key's value contains blank elements, then the returned array will include empty strings.

params = ActionController::Parameters.new(tags: "ruby,rails,,web")
params.extract_value(:tags) # => ["ruby", "rails", "", "web"]

Show source

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 976
    def extract_value(key, delimiter: "_")
      @parameters[key]&.split(delimiter, -1)
    end

extract_value

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