Update ActiveModel::Attributes examples in docs

activemodel/lib/active_model/attributes.rb

@@ -23,7 +23,8 @@ module ActiveModel
   #     attribute :active, :boolean, default: true
   #   end
   #
-  #   person = Person.new(name: "Volmer")
+  #   person = Person.new
+  #   person.name = "Volmer"
   #
   #   person.name # => "Volmer"
   #   person.active # => true
@@ -50,7 +51,8 @@ module ActiveModel
       #     attribute :active, :boolean, default: true
       #   end
       #
-      #   person = Person.new(name: "Volmer")
+      #   person = Person.new
+      #   person.name = "Volmer"
       #
       #   person.name   # => "Volmer"
       #   person.active # => true
@@ -132,7 +134,10 @@ module ActiveModel
     #     attribute :age, :integer
     #   end
     #
-    #   person = Person.new(name: "Francesco", age: 22)
+    #   person = Person.new
+    #   person.name = "Francesco"
+    #   person.age = 22
+    #
     #   person.attributes # => { "name" => "Francesco", "age" => 22}
     def attributes
       @attributes.to_hash

activemodel/lib/active_model/type/big_integer.rb

@@ -13,7 +13,9 @@ module ActiveModel
     #     attribute :id, :big_integer
     #   end
     #
-    #   person = Person.new(id: "18_000_000_000")
+    #   person = Person.new
+    #   person.id = "18_000_000_000"
+    #
     #   person.id # => 18000000000
     #
     # All casting and serialization are performed in the same way as the

activemodel/lib/active_model/type/date.rb

@@ -11,7 +11,8 @@ module ActiveModel
     #     attribute :birthday, :date
     #   end
     #
-    #   person = Person.new(birthday: "1989-07-13")
+    #   person = Person.new
+    #   person.birthday = "1989-07-13"
     #
     #   person.birthday.class # => Date
     #   person.birthday.year  # => 1989

activemodel/lib/active_model/type/date_time.rb

@@ -11,7 +11,8 @@ module ActiveModel
     #     attribute :start, :datetime
     #   end
     #
-    #   event = Event.new(start: "Wed, 04 Sep 2013 03:00:00 EAT")
+    #   event = Event.new
+    #   event.start = "Wed, 04 Sep 2013 03:00:00 EAT"
     #
     #   event.start.class # => Time
     #   event.start.year  # => 2013

activemodel/lib/active_model/type/decimal.rb

@@ -13,7 +13,9 @@ module ActiveModel
     #     attribute :weight, :decimal
     #   end
     #
-    #   bag = BagOfCoffee.new(weight: "0.0001")
+    #   bag = BagOfCoffee.new
+    #   bag.weight = "0.0001"
+    #
     #   bag.weight # => 0.1e-3
     #
     # Numeric instances are converted to BigDecimal instances. Any other objects

activemodel/lib/active_model/type/float.rb

@@ -13,7 +13,9 @@ module ActiveModel
     #     attribute :weight, :float
     #   end
     #
-    #   bag = BagOfCoffee.new(weight: "0.25")
+    #   bag = BagOfCoffee.new
+    #   bag.weight = "0.25"
+    #
     #   bag.weight # => 0.25
     #
     # Values are coerced to their float representation using their +to_f+

activemodel/lib/active_model/type/immutable_string.rb

@@ -13,6 +13,7 @@ module ActiveModel
     #
     #   person = Person.new
     #   person.name = 1
+    #
     #   person.name # => "1"
     #   person.name.frozen? # => true
     #
@@ -27,7 +28,9 @@ module ActiveModel
     #     attribute :active, :immutable_string, true: "aye", false: "nay"
     #   end
     #
-    #   person = Person.new(active: true)
+    #   person = Person.new
+    #   person.active = true
+    #
     #   person.active # => "aye"
     class ImmutableString < Value
       def initialize(**args)

activemodel/lib/active_model/type/integer.rb

@@ -11,7 +11,9 @@ module ActiveModel
     #     attribute :age, :integer
     #   end
     #
-    #   person = Person.new(age: "18")
+    #   person = Person.new
+    #   person.age = "18"
+    #
     #   person.age # => 18
     #
     # Values are cast using their +to_i+ method, if it exists. If it does not

activemodel/lib/active_model/type/time.rb

@@ -11,7 +11,8 @@ module ActiveModel
     #     attribute :start, :time
     #   end
     #
-    #   event = Event.new(start: "2022-02-18T13:15:00-05:00")
+    #   event = Event.new
+    #   event.start = "2022-02-18T13:15:00-05:00"
     #
     #   event.start.class # => Time
     #   event.start.year  # => 2022