Question

我有一个相当简单的问题但到目前为止还没有找到答案。我有一个mongoose架构，其结构如下：

var mongoose = require('mongoose');
var schema = mongoose.Schema;

var family = new schema({
    _id : String,
    members : {
        parent: [{
            name: String,
            age : Number
        }],
        child: [{
            name: String,
            age : Number
        }]
    }
});

以下是表单本身：

<form name="familyForm" id="familyForm">
    <fieldset>
        <select ng-model="familyDropdown" ng-click="populateFamily()" id="familyDropdown">
            <option value="new">New Family</option>
            <option ng-repeat="family in familyList track by family._id" bn-log-dom-creation="With" ng-model="family._id" value="{{family._id}}">{{family._id}}</option>
        </select>
        <input type="text" id="newFamily" placeholder="Create New Family" ng-model="family._id" ng-minlength="2" />
        <input type="text" id="newParent" placeholder="Add a Parent to {{ family._id }}" ng-model="family.members.parent[0].name" ng-minlength="2" />
        <span class="family-box-buttons">
            <button type="submit" class="green-button" ng-click="addFamily(family)" ng-disabled="familyForm.$invalid">
                <i class="fa fa-check"></i>
            </button>
            <button type="button" class="red-button" ng-click="cancelForm()">
                <i class="fa fa-times"></i>
            </button>
        </span>
    </fieldset>
</form>

以下是此难题的其他服务器端部分：

来自我的app.js

var mongoose = require('mongoose');
var express = require('express');
var app = express();

app.get('/family', api.getFamily);
app.post('/family/:_id', api.postFamily);
app.delete('/family/:_id', api.deleteFamily);

app.listen(3000, function(){
    console.log('connected!');
});

从我的API

var Family = require('./family.js');

exports.getFamily = function(req, res){
    Family.find({}, function(err, family){
        if(err){
            res.send('Family not found');
        }
        res.send(family);
    });
};

exports.postFamily = function(req, res){
    if(req.body){
        console.log(req.body);
        var family = new Family(req.body);
        family.save(function(err, family){
            if(err){
                res.send('There was an error adding this Family');
            }
            res.send(family);
        });
    }
};

我的问题是，对于ng-model封装的任何内容，使用[]映射到架构时似乎有些困难。如果我只用family._id

填写输入字段，我可以POST

我尝试过像ng-model="family.members.parent.name"这样的事情但是意识到了这一点。符号专门授予访问对象模型而不是数组模型的权限。

我还尝试了ng-model="family.members.parent[].name和ng-model="family.members.parent[name]等内容。

我意识到这一定是一个相当简单的错误。如果有更好的方法，请指出正确的方向。任何指导都将不胜感激。

Answer 1

尝试：

ng-model="family.members.parent[0].name"

基本上是一个数组：

var arr = [ "a", 23, { b: "bee" } ]

索引（即数组中项目的编号，从0开始）将访问一个元素。您必须使用括号表示法。

arr[0] // "a"
arr[1] // 23
arr[2] // { b: "bee }
arr.a  // undefined
arr.b  // undefined

对于某个对象，您可以使用点表示法或括号表示法：

var obj = { a: "donkey", b: 23, c: { cat: "fish", rabbit: "ears" } }

obj.a              // "donkey"
obj['b']           // 23
obj.c.cat          // "fish"
obj['c']['rabbit'] // "ears"
obj.c['rabbit']    // "ears"
obj[0]             // undefined

在[]中使用ng-model和mongoose模式对象

1 个答案: