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Ruby on rails RubyonRails:Heroku运行RakeDB:migrate失败_Ruby On Rails_Heroku_Rake_Dbmigrate - Fatal编程技术网
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Ruby on rails RubyonRails:Heroku运行RakeDB:migrate失败

ruby-on-rails heroku

Ruby on rails RubyonRails:Heroku运行RakeDB:migrate失败,ruby-on-rails,heroku,rake,dbmigrate,Ruby On Rails,Heroku,Rake,Dbmigrate,每当我尝试运行heroku运行rake db:migrate或想要bundle安装时 我收到以下错误消息： PG:DuplicateObject: ERROR: constraint "fk_rails_d0c2931" for relation "subscription" already exist : ALTER TABLE "subscriptions" ADD CONTRAINT "

每当我尝试运行
heroku运行rake db:migrate
或想要
bundle安装时

我收到以下错误消息：

    PG:DuplicateObject: ERROR: constraint "fk_rails_d0c2931" 
    for relation "subscription" already exist
    : ALTER TABLE "subscriptions" ADD CONTRAINT
    "fk_railsd0c2931" FOREIGN KEY ("project_id")
编辑：

您是否正在迁移到新的数据库中？错误表明您正在尝试在已有外键的位置创建外键。嗯，不，实际上我只是想将我的应用程序部署到heroku并运行heroku run rake db:migrate以便能够使用Desive等等。奇怪的是它在本地工作吗？你是说rake db:migrate？是的，如果我在本地运行rake db:migrate，它只会返回，因为我没有开放的迁移