closes #325

ruby/hyper-model/lib/reactive_record/active_record/reactive_record/dummy_value.rb

@@ -55,18 +55,20 @@ def build_default_value_for_date
         end
       end
 
+      FALSY_VALUES = [false, nil, 0, "0", "f", "F", "false", "FALSE", "off", "OFF"]
+
       def build_default_value_for_boolean
-        @column_hash[:default] || false
+        !FALSY_VALUES.include?(@column_hash[:default])
       end
 
       def build_default_value_for_float
-        @column_hash[:default] || Float(0.0)
+        @column_hash[:default]&.to_f || Float(0.0)
       end
 
       alias build_default_value_for_decimal build_default_value_for_float
 
       def build_default_value_for_integer
-        @column_hash[:default] || Integer(0)
+        @column_hash[:default]&.to_i || Integer(0)
       end
 
       alias build_default_value_for_bigint build_default_value_for_integer

ruby/hyper-model/spec/batch1/column_types/column_type_spec.rb

@@ -297,8 +297,16 @@ class DefaultTest < ActiveRecord::Base
     r = DefaultTest.create(string: "no no no")
     expect_evaluate_ruby do
       t = DefaultTest.find(1)
-      [t.string, t.date, t.datetime]
-    end.to eq(["I'm a string!", r.date.as_json, Timex.new(r.datetime.localtime).as_json])
+      [
+        t.string, t.date, t.datetime, t.integer_from_string, t.integer_from_int,
+        t.float_from_string, t.float_from_float,
+        t.boolean_from_falsy_string, t.boolean_from_truthy_string, t.boolean_from_falsy_value
+      ]
+    end.to eq([
+      "I'm a string!", r.date.as_json, Timex.new(r.datetime.localtime).as_json, 99, 98,
+      0.02, 0.01,
+      false, true, false
+    ])
     check_errors
   end
 

ruby/hyper-model/spec/test_app/app/models/public/default_test.rb

@@ -1,9 +1,16 @@
 class DefaultTest < ActiveRecord::Base
 def self.build_tables
     connection.create_table :default_tests, force: true do |t|
-    t.string :string, default: "I'm a string!"
-    t.date :date, default: Date.today
-    t.datetime :datetime, default: Time.now
+      t.string   :string,                     default: "I'm a string!"
+      t.date     :date,                       default: Date.today
+      t.datetime :datetime,                   default: Time.now
+      t.integer  :integer_from_string,        default: "99"
+      t.integer  :integer_from_int,           default: 98
+      t.float    :float_from_string,          default: "0.02"
+      t.float    :float_from_float,           default: 0.01
+      t.boolean  :boolean_from_falsy_string,  default: "OFF"
+      t.boolean  :boolean_from_truthy_string, default: "something-else"
+      t.boolean  :boolean_from_falsy_value,   default: false
     end
   end
 end