如何使用猫鼬以Mongodb嵌套模式的形式保存数据

Question

I want to structure mongodb in such a way that it store data in following way.

 { "question" : "Was today's decision right?", "choices" : [ { "text" : "yes", "votes" : [ { "ip" : "123.123.123.123", "time" : "123444" } ] }, { "text" : "no", "votes" : [ { "ip" : "123.123.123.123", "time" : "123444" }, { "ip" : "123.123.123.123", "time" : "123444" }, { "ip" : "123.123.123.123", "time" : "123444" } ] } ] }, { "question" : "Was yesterday's decision right?", "choices" : [ { "text" : "yes", "votes" : [ { "ip" : "123.123.123.123", "time" : "123444" } ] }, { "text" : "no", "votes" : [ { "ip" : "123.123.123.123", "time" : "123444" }, { "ip" : "123.123.123.123", "time" : "123444" }, { "ip" : "123.123.123.123", "time" : "123444" } ] } ] } 

What i have done so far for structure after little searching

 var mongoose = require('mongoose'); var Schema = mongoose.Schema; var voteSchema = new Schema({ ip: String }); var choiceSchema = new Schema({ text: String, votes: [voteSchema] }); var PollSchema = new Schema({ question: { type: String, required: true }, choices: [choiceSchema] }); module.exports = mongoose.model('Polls', PollSchema); 

Now if I use following code to save hard coded data then it's working fine

 var poll = new Poll({ question : reqBody.question, choices : [ { text : "yes", votes : [ { ip : "123.123.123.123" } ] }, { text : "no", votes : [ { ip : "123.123.123.123", }, { ip : "123.123.123.123", }, { ip : "123.123.123.123", } ] } ] }); poll.save(function(err, data) { res.json(data); }); 

But i am not able to figure how i should send data from front end (html/js)?

Answer 1

Got solution :

First put the following code in controller file

  var reqBody = req.body; var choices = reqBody.choices; var choicesnew = []; for (var i = choices.length - 1; i >= 0; i--) { var votes = []; var choice = {text:choices[i],votes: votes}; choicesnew.push(choice); } var newPoll = { question: reqBody.question, choices: choicesnew } var poll = new Poll(newPoll); poll.save(function(err, data){ res.json(reqBody); }); 

And now pass the data using front end

 <form action="#"> <input type="text" name="question" placeholder="question"> <input type="text" name="choices" placeholder="choices"> <input type="text" name="choices" placeholder="choices"> <input type="text" name="choices" placeholder="choices"> <input type="text" name="ip" placeholder="ip"> <input type="submit"> </form> 

Although some data should be processed by nodejs. I am just listing here just for the sake of simplicity.

Now i am using ajax to send data from front end to node

 $("form").on('submit', function(event) { event.preventDefault(); $.ajax({ url: '/new', type: 'POST', data: $(this).serializeArray(), }) .done(function(data) { console.log(data); }) .fail(function() { console.log("error"); }) .always(function() { console.log("complete"); }); });