• Student.block in <class:Student> (pry):3
  • Student.serialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:48
    • Enumerable#all? $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:54
      • Array#each $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:54
        • Student.block in serialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:54
          • Kernel#respond_to? $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:54
    • Object#require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:291
      • Object#load_dependency $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:255
        • ActiveSupport::Dependencies.load? $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:330
          • ActiveSupport::Dependencies.mechanism $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/attribute_accessors.rb:60
        • ActiveSupport::Dependencies.constant_watch_stack $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/attribute_accessors.rb:60
        • ActiveSupport::Dependencies::WatchStack#watching? $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:118
        • Object#block in require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
          • Kernel#require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
            • IO#set_encoding $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
            • IO#set_encoding $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
            • Object#require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:291
              • Object#load_dependency $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:255
                • ActiveSupport::Dependencies.load? $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:330
                  • ActiveSupport::Dependencies.mechanism $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/attribute_accessors.rb:60
                • ActiveSupport::Dependencies.constant_watch_stack $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/attribute_accessors.rb:60
                • ActiveSupport::Dependencies::WatchStack#watching? $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:118
                • Object#block in require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
                  • Kernel#require $GemPath0/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293
            • ActiveRecord.<module:ActiveRecord> $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:3
              • ActiveRecord::Coders.<module:Coders> $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:4
                • Class#inherited $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:5
                • ActiveRecord::Coders::YAMLColumn.<class:YAMLColumn> $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:5
                  • Module#attr_accessor $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:7
                    • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:7
                    • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:7
                  • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:9
                  • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:14
                  • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:21
                  • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:32
                  • Module#private $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:39
                  • Module#method_added $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:41
    • Class#new $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/serialization.rb:57
      • ActiveRecord::Coders::YAMLColumn#initialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:9
        • ActiveRecord::Coders::YAMLColumn#check_arity_of_constructor $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:41
          • ActiveRecord::Coders::YAMLColumn#load $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:21
            • NilClass#nil? $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:22
            • Class#new $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:22
              • Array#initialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:22
    • Student.decorate_attribute_type $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:11
      • Symbol#to_s $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:13
      • Symbol#to_s $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:13
      • Student.decorate_matching_attribute_types $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:17
        • Student.reload_schema_from_cache $GemPath0/gems/activerecord-5.0.4/lib/active_record/model_schema.rb:474
          • Student.direct_descendants $GemPath0/gems/activesupport-5.0.4/lib/active_support/descendants_tracker.rb:52
            • ActiveSupport::DescendantsTracker.direct_descendants $GemPath0/gems/activesupport-5.0.4/lib/active_support/descendants_tracker.rb:8
              • Kernel#hash $GemPath0/gems/activesupport-5.0.4/lib/active_support/descendants_tracker.rb:9
          • Array#each $GemPath0/gems/activerecord-5.0.4/lib/active_record/model_schema.rb:487
        • String#to_s $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:19
        • Student.attribute_type_decorations -> block (4 levels) in class_attribute $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:90
          • Student.block (4 levels) in class_attribute $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:90
        • ActiveRecord::AttributeDecorators::TypeDecorator#merge $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:43
          • Hash#merge $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:44
            • Kernel#initialize_dup $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:44
              • Hash#initialize_copy $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:44
          • Class#new $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:44
            • ActiveRecord::AttributeDecorators::TypeDecorator#initialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_decorators.rb:39
        • Student.attribute_type_decorations= -> block (2 levels) in class_attribute $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:87
          • Student.block (2 levels) in class_attribute $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:87
            • Kernel#singleton_class $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:88
            • Module#class_eval $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:88
              • #<Class:Student(no: string, name: string, created_at: datetime, updated_at: datetime, gender: integer, grade: integer, alias_names: text)>.block (3 levels) in class_attribute $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:88
                • #<Class:Student(no: string, name: string, created_at: datetime, updated_at: datetime, gender: integer, grade: integer, alias_names: text)>.remove_possible_method $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/remove_method.rb:3
                  • Module#method_defined? $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/remove_method.rb:4
                  • Module#undef_method $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/remove_method.rb:5
                    • BasicObject#singleton_method_undefined $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/module/remove_method.rb:5
                • Module#define_method $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:90
                  • BasicObject#singleton_method_added $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:90
            • Module#singleton_class? $GemPath0/gems/activesupport-5.0.4/lib/active_support/core_ext/class/attribute.rb:93