core/db/migrate/20180326143207_join_models_for_syllabus_and_course_to_teacher.rb
class JoinModelsForSyllabusAndCourseToTeacher < ActiveRecord::Migration[5.1]
def change
create_table(:gaku_syllabus_teachers) do |t|
t.references :syllabus
t.references :teacher
end
create_table(:gaku_course_teachers) do |t|
t.references :course
t.references :teacher
end
end
end