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Ruby ActiveRecord Basics Migrations and Relationships Migrations 2

Alessandro Barbieri
Alessandro Barbieri
3,053 Points
Posted by Alessandro Barbieri
Alessandro Barbieri
3,053 Points

Create a table and add columns with migration is not working

I'm trying to answer to this on the ActiveRecord course.

"In the last question, we created a table called contacts, with a first_name and last_name string. How could you include both of those fields automatically by using the generator command?"

I tried:

rails generate migration CreateContacts first_name:string last_name:string

Unfortunately I got this: Bummer! The first argument should be the name of the table.

I got the lines from the documentation so I don't know where I went wrong (http://guides.rubyonrails.org/active_record_migrations.html#creating-a-standalone-migration)

2 Answers

Alessandro Barbieri
Alessandro Barbieri
3,053 Points
Alessandro Barbieri
Alessandro Barbieri
3,053 Points

Apparently the answer is:

rails generate migration contacts first_name:string last_name:string
Christof Baumgartner
Christof Baumgartner
20,864 Points
Christof Baumgartner
Christof Baumgartner
20,864 Points

Thanks a lot for your answer. This was driving me insane. However I couldn't find this in the video before. Also it seems like a bug for me.

Alessandro Barbieri
Alessandro Barbieri
3,053 Points
Alessandro Barbieri
Alessandro Barbieri
3,053 Points

I see, anyhow wouldn't be my answer also right?

The documentations says: "If the migration name is of the form "CreateXXX" and is followed by a list of column names and types then a migration creating the table XXX with the columns listed will be generated. For example:"

rails generate migration CreateProducts name:string part_number:string

which gives:

class CreateProducts < ActiveRecord::Migration
  def change
    create_table :products do |t|
      t.string :name
      t.string :part_number
    end
  end
end