将嵌套的对象数组与父对象合并

Question

var data = {
      food:"chicken", 
      list:[
             { name: "wings", qty: "25", price: "4,900", payment:"Cash" },
             { name: "lap", qty: "50", price: "9,900", payment: "Credit" }
           ]
      }

我通过 php laravel 模型关系从 ajax 收到了上述数据，我想使用 javascript 或任何库将数据转换为以下格式下面。

下面的数据就是你想要的。

var data = [
    { food:"chicken", name: "wings", qty:"25", price:"4,900", payment:"Cash" },
    { food:"chicken", name: "lap", qty:"50", price:"9,900", payment:"Credit" }        
]

Answer 1

这段 getList 函数的代码可能对您有所帮助：

let getList = function(data, arrayKey, arrayName) {
 data[arrayKey].forEach(function(element) {
   element[arrayName] = data[arrayName]
 }); return data[arrayKey];
};

在这里您可以看到上面函数的运行示例：

const data = {
  food: "chicken",
  list: [{
      name: "wings",
      qty: "25",
      price: "4,900",
      payment: "Cash"
    },
    {
      name: "lap",
      qty: "50",
      price: "9,900",
      payment: "Credit"
    }
  ]
};

let getList = function(data, arrayKey, arrayName) {
 data[arrayKey].forEach(function(element) {
   element[arrayName] = data[arrayName]
 }); return data[arrayKey];
};

let result = getList(data, "list", "food");
console.log(result);

Answer 2

您可以轻松解决这个问题，方法是遍历每个项目并将食物对象添加到该对象，如下所示：

data.list.forEach((oneItem) => {
     oneItem.food = data.food;
});
data = data.list; //keep the array of list objects only

Answer 3

不使用 lodash 而只使用 ES6 的一种方法是通过 map 和 Object.assign:

var data = { food: "chicken", list: [{ name: "wings", qty: "25", price: "4,900", payment: "Cash" }, { name: "lap", qty: "50", price: "9,900", payment: "Credit" } ] }

var result = data.list.map(x => Object.assign(x, {food: data.food}))
console.log(result)

lodash/fp 看起来像：

var result = _.flow(_.map(_.extend({ food: data.food })))(data.list)

在lodash中：

var result = _.map(data.list, x => _.extend(x, {food: data.food}))

将嵌套的对象数组与父对象合并

merge nested array of object with parent object

javascript

underscore.js

lodash