Question

我需要使用一些特定规则来模拟银行交易。例如，如果使用借记卡付款，则必须支付3.2％的费用。

现在我还不能在控制器中设置规则。有人可以帮我吗？这是我当前的控制器的外观：

class TransactionController {
  async store(req, res) {
    const { type_transaction } = req.body;

    if (type_transaction === 'debit') {
      const value = value - 32 / 10;
    }
    const transaction = await Transaction.create(req.body);
    return res.json(transaction);
  }
}

这是交易模型：

class Transaction extends Model {
  static init(sequelize) {
    super.init(
      {
        value: Sequelize.INTEGER,
        description: Sequelize.STRING,
        type_transaction: Sequelize.STRING,
        installments: Sequelize.INTEGER,
      },
      {
        sequelize,
      },
    );

    return this;
  }

// ... CONTINUES
}

Answer 1

在这种情况下，我们需要像下面的代码一样从Besides no version, or a specific one, it is also possible to use logical operators: '> 0.1' Any version higher than 0.1 '>= 0.1' Version 0.1 and any higher version '< 0.1' Any version lower than 0.1 '<= 0.1' Version 0.1 and any lower version In addition to the logic operators CocoaPods has an optimistic operator ~>: '~> 0.1.2' Version 0.1.2 and the versions up to 0.2, not including 0.2 and higher '~> 0.1' Version 0.1 and the versions up to 1.0, not including 1.0 and higher '~> 0' Version 0 and higher, this is basically the same as not having it. To use the master branch of the repo: pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire.git' To use a different branch of the repo: pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire.git', :branch => 'dev' To use a tag of the repo: pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire.git', :tag => '3.1.1' Or specify a commit: pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire.git', :commit => '0f506b1c45'获取值：

req.body

创建一个“银行交易”并应用特定规则

1 个答案: