• Object#block in __pry__ (pry):6
  • Student#__temp__16c6961637f5e616d65637= $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/write.rb:18
    • Student#write_attribute $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/write.rb:31
      • Student#write_attribute_with_type_cast $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/write.rb:45
        • String#to_s $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_methods/write.rb:46
        • ActiveRecord::AttributeSet#write_from_user $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_set.rb:52
          • ActiveRecord::AttributeSet#[] $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_set.rb:11
            • ActiveRecord::LazyAttributeHash#[] $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_set/builder.rb:41
          • ActiveRecord::Attribute::FromDatabase#with_value_from_user $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute.rb:66
            • ActiveRecord::Type::Serialized#assert_valid_value $GemPath0/gems/activerecord-5.0.4/lib/active_record/type/serialized.rb:44
              • Kernel#respond_to? $GemPath0/gems/activerecord-5.0.4/lib/active_record/type/serialized.rb:45
              • ActiveRecord::Coders::YAMLColumn#assert_valid_value $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:32
                • Kernel#nil? $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:33
                • Kernel#is_a? $GemPath0/gems/activerecord-5.0.4/lib/active_record/coders/yaml_column.rb:33
            • Kernel#class $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute.rb:68
            • ActiveRecord::Attribute::FromDatabase.from_user $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute.rb:8
              • Class#new $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute.rb:9
                • ActiveRecord::Attribute::FromUser#initialize $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute.rb:29
          • ActiveRecord::LazyAttributeHash#[]= $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_set/builder.rb:45
            • Kernel#frozen? $GemPath0/gems/activerecord-5.0.4/lib/active_record/attribute_set/builder.rb:46