I know that i can touch a migration and add
add_index :table_name, :column_name, :unique => true
But how is the right rails migration command to generate this?
rails g migration add_index_to_column_name :column_name, :unique => true
Is that right?
In my special example I have a table customers
t.integer :customerID t.string :surname t.string :first_name t.string :phone
an i want to set the customerID to unique. Tried
rails g migration AddIndexToCustomers :customerID, :unique => true
But if i look to my migration file after this, it dont look right see this:
def change add_column :customers, :, :customerID, add_column :customers, :, :unique add_column :customers, :=, :string end
Any idea or suggestion?
Starting from Rails 3.2 you able to use:
rails g migration add_index_to_table_name column_name:uniq
example from http://guides.rubyonrails.org/3_2_release_notes.html
rails g scaffold Post title:string:index author:uniq price:decimal{7,2}
upd I'm sorry. The default type if you don't pass it would be string. You can pass type by yourself.
column_name:type:uniq
Thus your example should looks like:
rails g migration add_index_to_customers customerID:integer:uniq
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