Run migrations from rails console
In the console:
ActiveRecord::Migration.remove_column :table_name, :column_nameTo update your schema.rb file after running migrations from the console, you must run rails db:migrate
Rails <= 4
This will allow you to migrate without reloading the whole rails environment:
ActiveRecord::Migrator.migrate "db/migrate"and rollback:
# 3 is the number of migration to rollback, optional, defaults to 1ActiveRecord::Migrator.rollback "db/migrate", 3Rails >= 5 (thanks to @gssbzn, his answer is below)
Migrate :
ActiveRecord::MigrationContext.new("db/migrate").migrateAnd rollback :
# 3 is the number of migration to rollback, optional, defaults to 1ActiveRecord::MigrationContext.new("db/migrate").rollback 3
Another way that I find neater to just run some migration command from console is this:
ActiveRecord::Schema.define do create_table :foo do |t| t.string :bar t.timestamps endendThis has the advantage that the contents inside the block is compatible with just copy and pasting random contents from a real migration file / schema.rb.