instance method `extract_value`

Ruby on Rails 7.1.6

Since v7.1.6

Available in: v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

extract_value(key, delimiter: "_")

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, delimiter: ",") # => ["ruby", "rails", "", "web"]

Parameters

key req
delimiter key = "_"

Source

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

Defined in actionpack/lib/action_controller/metal/strong_parameters.rb line 976 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionController::Parameters

Signature

Parameters