Rails 4 MySQL bigInt主键问题和错误

我需要在rails 4.1.8应用程序中使用14位的bigInt作为主键。以SO上的旧帖子为指导，我提出了以下解决方法

    class CreateAcctTransactions < ActiveRecord::Migration
      def change
        create_table "acct_transactions", :id => false do |t|
            t.integer :id, :limit => 8,null: false
            t.integer  "account_id",limit: 8,null: false
            t.integer  "transaction_type_id", null: false
            t.datetime "date",null: false
            t.text     "description",limit: 255
            t.decimal  "amount",precision: 10, scale: 2, null: false
        end
      end
    end

迁移运行正常，但表不会种子，id不是主id。我犯了错误吗？还是有更好的方法

---

非常感谢

我通过编写SQL执行迁移来修复它，如下所示：

    class CreateAcctTransactions < ActiveRecord::Migration
      def self.up
        # create ACCT_TRANSACTIONS table
          create_table "acct_transactions", id: false, force: true do |t|
            t.integer  "id",                  limit: 8,                            null: false
            t.timestamp "date",                                                     null: false
            t.text     "description",         limit: 255
            t.decimal  "amount",                          precision: 10, scale: 2, null: false
            t.integer  "account_id",          limit: 8,                            null: false
            t.integer  "transaction_type_id",                                      null: false
          end
          execute "ALTER TABLE acct_transactions ADD PRIMARY KEY (id);"
          add_index "acct_transactions", ["account_id"], name: "fk_acct_transactions_accounts1_idx", using: :btree
          add_index "acct_transactions", ["date", "id"], name: "BY_DATE", using: :btree
          add_index "acct_transactions", ["transaction_type_id"], name: "fk_acct_transactions_transaction_types1_idx", using: :btree
      end

      def self.down
        drop_table :acct_transactions
      end
    end

class CreateAcctTransactions

注意第12行的执行语句。当我在那里的时候，我也把“日期”字段改成了时间戳，我本来打算这么做的。

---

它不漂亮，违反了“惯例”，但它工作得很完美，所以我可以继续。感谢您的关注。

只有在运行迁移的情况下，才有可能重复此操作，而不是在使用schema.rb创建数据库的情况下（例如，如果运行rake db:setup）。

    class CreateAcctTransactions < ActiveRecord::Migration
      def self.up
        # create ACCT_TRANSACTIONS table
          create_table "acct_transactions", id: false, force: true do |t|
            t.integer  "id",                  limit: 8,                            null: false
            t.timestamp "date",                                                     null: false
            t.text     "description",         limit: 255
            t.decimal  "amount",                          precision: 10, scale: 2, null: false
            t.integer  "account_id",          limit: 8,                            null: false
            t.integer  "transaction_type_id",                                      null: false
          end
          execute "ALTER TABLE acct_transactions ADD PRIMARY KEY (id);"
          add_index "acct_transactions", ["account_id"], name: "fk_acct_transactions_accounts1_idx", using: :btree
          add_index "acct_transactions", ["date", "id"], name: "BY_DATE", using: :btree
          add_index "acct_transactions", ["transaction_type_id"], name: "fk_acct_transactions_transaction_types1_idx", using: :btree
      end

      def self.down
        drop_table :acct_transactions
      end
    end