充满了猫鼬的分页

Question

我尝试使用npm mongoose-paginate但是填充不能正常工作

这是我的 UsersSchema.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var usersSchema = new Schema({
    name : String,
    created_at : { type : Date, default : Date.now }
});

module.exports = mongoose.model('users',usersSchema);

这是帖子架构

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var mongoosePaginate = require('mongoose-paginate');

var postsSchema = new Schema({
    user : { type: Schema.Types.ObjectId, ref: 'users' },
    post : String,
    created_at : { type : Date, default : Date.now }
});
postsSchema.plugin(mongoosePaginate);
module.exports = mongoose.model('posts',postsSchema);

这是我的查询

var options = {
    sort:     { created_at: -1 },
    lean:     true,
    offset:   offset,
    populate : 'users',
    limit:    10
};
postsSchema.paginate({user:user},options,function(err,posts){
    if(err){
        console.log(err)
        return false;
    }
    console.log(posts)
});

user提供objectID而不是用户数据.即

[{
   user : objectID(987654ff11aa),
   post : 'post'
}]  

Answer 1

一个人有以下的事情

Post.find({})
.populate([
    // here array is for our memory. 
    // because may need to populate multiple things
    {
        path: 'user',
        select: 'name',
        model:'User',
        options: {
            sort:{ },
            skip: 5,
            limit : 10
        },
        match:{
            // filter result in case of multiple result in populate
            // may not useful in this case
        }
    }
])
.exec((err, results)=>{
   console.log(err, results)
})

Answer 2

如果要使用猫鼬分页，可以执行以下操作

var query = {};
var options = {
  sort: { date: -1 },
  populate: 'users',
  lean: true,
  offset: offset, 
  limit: 10
};

Post.paginate({}, options, (err, result) => {
 //....
})