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Commit Description:
keep all heartbeat instead of only the latest one...
Commit Description:
keep all heartbeat instead of only the latest one
(grafted from 0bdf62fde5fdb94d6f94c2b8b8ebc58ffbe8d2f9)
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db/migrate/005_add_index_to_submissions.rb
| 9 lines
| 219 B
| text/x-ruby
| RubyLexer
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r0 | class AddIndexToSubmissions < ActiveRecord::Migration | ||
def self.up | ||||
add_index :submissions, [:user_id, :problem_id] | ||||
end | ||||
def self.down | ||||
remove_index :submissions, :column => [:user_id, :problem_id] | ||||
end | ||||
end | ||||