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