Question

如何通过对象验证属性？我在checkProperty

中定义了属性列表

我期望missingFields返回Batch.Name丢失。

当前正在输出[ 'Batch.Id', 'Batch.Name' ]，这是错误的。

let data = {
    Batch: {
        Id: 123,
    },
    Total: 100,
}

let checkProperty = ['Total', 'Batch.Id', 'Batch.Name'];

let missingFields = [];
checkProperty.forEach(field => {
    if (!data[field]) {
        missingFields.push(field);
    }
});

console.log(missingFields);

Answer 1

在点上分割后，您必须使用reduce之类的东西来检查嵌套值是否存在：

let data = {
  Batch: {
    Id: 123,
  },
  Total: 100,
}

let checkProperty = ['Total', 'Batch.Id', 'Batch.Name'];

let missingFields = [];
checkProperty.forEach(field => {
  const val = field.split('.').reduce((a, prop) => !a ? null : a[prop], data);
  if (!val) {
    missingFields.push(field);
  }
});

console.log(missingFields);

Answer 2

您可以使用此

The reason why this数据[字段] when do数据[Batch.Id] it tries to check at the first level key of object. in our case we don't have any key such as Batch.Id .

For our case we need `data[Batch][Id]` something like this which first searches 
 for `Batch` property and than or the found value it searches for `Id`.

let data = {
    Batch: {
        Id: 123,
    },
    Total: 100,
}

let checkProperty = ['Total', 'Batch.Id', 'Batch.Name'];

let missingFields = [];
checkProperty.forEach(field => {
    let temp = field.split('.').reduce((o,e)=> {
     return o[e] || data[e]
    },{});

    if (!temp) {
        missingFields.push(field);
    }
});

console.log(missingFields);

Answer 3

如果可以使用其他库，则Ajv非常适合。您可以创建一个架构并进行验证，而不必自己创建所有逻辑。

var schema = {
  "type": "object",
  "properties": {
    "Batch": { 
        "type": "object", 
        "required": ["Id", "Name"],
        "properties": 
        {
        "Id":{},
        "Name":{},
        },
       },
    "Total": {}
  }
};


let json = {
  Batch: {
    Id: 123,
  },
  Total: 100,
}

var ajv = new Ajv({
    removeAdditional: 'all',
    allErrors: true
});

var validate = ajv.compile(schema);
var result = validate(json);
console.log('Result: ', result);
console.log('Errors: ', validate.errors);

返回以下错误消息：

dataPath:".Batch"
keyword:"required"
message:"should have required property 'Name'"
params:{missingProperty: "Name"}
schemaPath:"#/properties/Batch/required"

https://jsfiddle.net/95m7z4tw/

通过对象验证属性？

3 个答案: