• Object#block in <main> (pry):40
  • Student#__temp__e616d656= $GemPath0/gems/activerecord-5.1.2/lib/active_record/attribute_methods/write.rb:18
    • 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
        • String#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
      • String#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::FromUser#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::FromUser.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