• Object#block in <main> (pry):39
  • Student#write_attribute $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_methods/write.rb:31
    • Kernel#class $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_methods/write.rb:32
    • Student.attribute_alias? $GemPath0/gems/activemodel-5.1.2/lib/active_model/attribute_methods.rb:218
      • Student.attribute_aliases -> block (4 levels) in class_attribute $GemPath0/gems/activesupport-5.1.2/lib/active_support/core_ext/class/attribute.rb:90
        • Student.block (4 levels) in class_attribute $GemPath0/gems/activesupport-5.1.2/lib/active_support/core_ext/class/attribute.rb:90
      • Symbol#to_s $GemPath0/gems/activemodel-5.1.2/lib/active_model/attribute_methods.rb:219
      • Hash#key? $GemPath0/gems/activemodel-5.1.2/lib/active_model/attribute_methods.rb:219
    • Symbol#to_s $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_methods/write.rb:35
    • ActiveRecord::AttributeSet#write_from_user $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_set.rb:53
      • ActiveRecord::AttributeSet#[] $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_set.rb:12
        • ActiveRecord::LazyAttributeHash#[] $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_set/builder.rb:41
      • ActiveRecord::Attribute::FromDatabase#with_value_from_user $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute.rb:66
        • ActiveModel::Type::String#assert_valid_value $GemPath0/gems/activemodel-5.1.2/lib/active_model/type/value.rb:103
        • Kernel#class $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute.rb:68
        • ActiveRecord::Attribute::FromDatabase.from_user $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute.rb:8
          • Class#new $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute.rb:9
            • ActiveRecord::Attribute::FromUser#initialize $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute.rb:29
      • ActiveRecord::LazyAttributeHash#[]= $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_set/builder.rb:45
        • Kernel#frozen? $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_set/builder.rb:46