javascript 在Mongoose中更新和删除数组元素

Posted 2021-05-04

 // Update
 Article.update({'comments._id': comment_id},
      {'$set': {
             'comments.$.post': "this is Update comment",
	   }},
          function(err,model) {
	   	if(err){
        	console.log(err);
        	return res.send(err);
        }
        return res.json(model);
 });
 
 // Delete
 
 var article_id = req.params.articleid,//assume get 54fcb3890cba9c4234f5c925
    comment_id = req.params.commentid;// assume get 54fcb3890cba9c4234f5c925
  
  Article.findByIdAndUpdate(
    article_id,
   { $pull: { 'comments': {  _id: comment_id } } },function(err,model){
      if(err){
       	console.log(err);
       	return res.send(err);
        }
        return res.json(model);
    });