Rails create_table query
- by Steve
Hi,
I am a beginner in Rails. In the following code,there is an id which is set as false. What's the meaning of it?
class CreateCoursesStudents < ActiveRecord::Migration
def self.up
create_table :courses_students, :id => false do |t| t.integer :course_id,
:null => false t.integer :student_id, :null => false
end
# Add index to speed up looking up the connection, and ensure # we only enrol
a student into each course once
add_index :courses_students, [:course_id, :student_id], :unique => true
end
def self.down
remove_index :courses_students, :column => [:course_id, :student_id]
drop_table :courses_students
end
end
Thanks
