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Commit Description:
still upgrading
Commit Description:
still upgrading
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db/migrate/018_add_number_to_submissions.rb
| 32 lines
| 895 B
| text/x-ruby
| RubyLexer
|
jittat
|
r35 | class AddNumberToSubmissions < ActiveRecord::Migration | ||
| def self.up | ||||
| add_column :submissions, :number, :integer | ||||
| # add number field for all records | ||||
| Submission.reset_column_information | ||||
| last_user_id = nil | ||||
| last_problem_id = nil | ||||
| current_number = 0 | ||||
| r666 | Submission.order('user_id, problem_id, submitted_at').each do |submission| | |||
|
jittat
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r35 | if submission.user_id==last_user_id and submission.problem_id==last_problem_id | ||
| current_number += 1 | ||||
| else | ||||
| current_number = 1 | ||||
| end | ||||
| submission.number = current_number | ||||
| submission.save | ||||
| last_user_id = submission.user_id | ||||
| last_problem_id = submission.problem_id | ||||
| end | ||||
| add_index :submissions, [:user_id, :problem_id, :number], :unique => true | ||||
| end | ||||
| def self.down | ||||
| remove_index :submissions, :column => [:user_id, :problem_id, :number] | ||||
| remove_column :submissions, :number | ||||
| end | ||||
| end | ||||