method
require
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Class: Parameters
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require(key)
public
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