如何修改Loopback 4中的错误消息? [英] How to modify error messages in Loopback 4?

问题描述

以下是Loopback为唯一商品生成的示例错误消息:

Here's a sample error message generated by Loopback for unique item:

{
    "error": {
        "statusCode": "422",
        "name": "Error",
        "message": "ER_DUP_ENTRY: Duplicate entry '[e-mail]' for key 'email'",
        "code": "ER_DUP_ENTRY"
    }
}

但是，我要将其修改为:

However, I want to modify it as:

{
    "errors": {
        "email": [
            "The field email should be unique"
        ]
    }
}

文档确实对我没有帮助.有人可以帮我吗?

Documentation really didn't help me. Can anybody help me on this please?

推荐答案

您可以使用@loopback/rest中的HttpErrors对象返回自定义错误.请点击此处以获取更多信息.

You can return custom error using HttpErrors object from @loopback/rest. Please click here for more.

throw new HttpErrors.UnprocessableEntity('limit is not a natural number');

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