instance method `require`

Ruby on Rails 4.2.9

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

require(key)

Ensures that a parameter is present. If it’s present, returns the parameter at the given key, otherwise raises an ActionController::ParameterMissing error.

ActionController::Parameters.new(person: { name: 'Francesco' }).require(:person)
# => {"name"=>"Francesco"}

ActionController::Parameters.new(person: nil).require(:person)
# => ActionController::ParameterMissing: param not found: person

ActionController::Parameters.new(person: {}).require(:person)
# => ActionController::ParameterMissing: param not found: person

Parameters

key req

Source

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 246
    def require(key)
      value = self[key]
      if value.present? || value == false
        value
      else
        raise ParameterMissing.new(key)
      end
    end

Defined in actionpack/lib/action_controller/metal/strong_parameters.rb line 246 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionController::Parameters

Signature

Parameters