Question

I added add_column :microposts, :type, :string to one of my db migrations (not the most recent one if that matters). and also ran rake db:reset. So I have definitely made changes. But now if I run rake db:migrate or bundle exec rake db:migrate, it doesn’t output anything. If I run trace…

alex@alex-ThinkPad-T410:~/rails_projects/final2$ rake db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Invoke rails_env (first_time)
** Execute rails_env
** Execute db:load_config
** Execute db:migrate
** Invoke db:_dump (first_time)
** Execute db:_dump
** Invoke db:schema:dump (first_time)
** Invoke environment 
** Invoke db:load_config 
** Execute db:schema:dump

Answer 1

You wrote:

I added add_column :microposts, :type, :string to one of my db
migrations (not the most recent one if that matters).

This suspiciously sounds, as if you just added the text into the migration file. That won’t work. The migration state machine doesnt notice changes in the actual text files. Please check

rake db:migrate:status

You should instead create a new migration

rails g migration AddTypeToMicropost type:string

and then run rake again