diff options
| -rw-r--r-- | actionpack/lib/action_controller/metal/strong_parameters.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb index 5a06bf86e3..46c0e80194 100644 --- a/actionpack/lib/action_controller/metal/strong_parameters.rb +++ b/actionpack/lib/action_controller/metal/strong_parameters.rb @@ -560,12 +560,14 @@ module ActionController # Returns a parameter for the given +key+. If the +key+ # can't be found, there are several options: With no other arguments, # it will raise an <tt>ActionController::ParameterMissing</tt> error; - # if more arguments are given, then that will be returned; if a block + # if a second argument is given, then that is returned (converted to an + # instance of ActionController::Parameters if possible); if a block # is given, then that will be run and its result returned. # # params = ActionController::Parameters.new(person: { name: "Francesco" }) # params.fetch(:person) # => <ActionController::Parameters {"name"=>"Francesco"} permitted: false> # params.fetch(:none) # => ActionController::ParameterMissing: param is missing or the value is empty: none + # params.fetch(:none, {}) # => <ActionController::Parameters {} permitted: false> # params.fetch(:none, "Francesco") # => "Francesco" # params.fetch(:none) { "Francesco" } # => "Francesco" def fetch(key, *args) |