我试图学习mongo / mongoose并将json导入mongodb。
我的json包含许多形式的对象:
{
"FIELD1": "28/02/2017",
"FIELD2": "string value",
"FIELD3": "100"
},
{
"FIELD1": "28/02/2017",
"FIELD2": "string",
"FIELD3": "57"
},
我有一个架构:
var statementSchema = new Schema({
//date: {type:Date, required: true},
//name : {type:String, required:true},
//amount: {type: Number, required:true}
FIELD1 : {type:String, required:true},
FIELD2: {type:String, required:true},
FIELD3: {type:String, required:true}
});
你可以看到我真的希望db中的键能够更好地描述它们包含的值,而不是源json中的值(即我希望json中的FIELD1
为{{1在DB)。
最好的方法是什么?我见过mongoose-aliasfield,这是最好的方法还是有一种默认方式在Schema中定义FIELD1 date
someothername?
虽然我有你,但是将FIELD1和FIELD3分别从它们在json源中的当前String中转换为as
和Date
的正确方法是什么? ;)
答案 0 :(得分:0)
尝试使用这种方式。,ref Mongoose schema data type。
<强>架构:强>
var statementSchema = new Schema({
FIELD1 : {type:Date, required:true},
FIELD2: {type:String, required:true},
FIELD3: {type:Number, required:true}
});
插入强>
db.getCollection('users').save({
"FIELD1": Date("28/02/2017"),
"FIELD2": String("string"),
"FIELD3": Number("57")
})
<强>结果:强>
{
"_id" : ObjectId("58f8ba663749f1f13fee40d6"),
"FIELD1" : "Thu Apr 20 2017 19:10:54 GMT+0530 (IST)",
"FIELD2" : "string",
"FIELD3" : 57.0
}
答案 1 :(得分:0)
好的,这就是我真的是个新手。
现在定义了模式:
var statementSchema = new Schema({
date : {type:Date, required:true},
name: {type:String, required:true},
amount: {type:Number, required:true}
});
我插入使用:
var statements= require('../data/convertcsv.json');
var Statement = require('../models/statement');
var mongoose = require('mongoose');
mongoose.connect('localhost:27017/statement');
var parseDate = require('../helpers/parseDate');
var done = 0;
for( var i = 0; i < statements.length; i++ ) {
var newStatement = new Statement();
//helper function breaks string apart, reassembles and returns a Date
newStatement.date = parseDate.stringToDate(statements[i].FIELD1);
newStatement.name = statements[i].FIELD2;
newStatement.amount = Number(statements[i].FIELD3);
newStatement.save(function(err, result){
done++;
if(done === statements.length){
exit();
}
});
}
function exit(){
mongoose.disconnect();
};