forgeplus/lib/tasks/fix_issue_project_issues_index.rake

# 执行示例  bundle exec rake sync_version_issues:update_issues
# 线上环境执行示例  RAILS_ENV=production bundle exec rake sync_version_issues:update_issues

namespace :fix_issue_project_issues_index do
  desc "update issue project_issues_index"

  task update_issues: :environment do
    puts "____________fix start________________"

    Issue.update_all(project_issues_index: nil)

    Issue.where(project_issues_index: nil).group(:project_id).count.each do |pid, count| 
      p = Project.find_by_id(pid)
      issues = p.issues.order(created_on: :asc)
      issues.find_each.with_index do |issue, index|
        issue.update_column(:project_issues_index, index+1)
      end
    end
    puts "____________fix end________________"
  end

end