Here is my mongo collection's sample:

{
   "data": {
      "categories": [
         {
            "categoryName":"Nature",
            "urls": [
               {
                  "name":"mountain",
                  "url":"mountain-url"
               }
            ]
         },
         {
            "categoryName":"Animals"
            "urls": [
               {
                  "name":"lion",
                  "url":"lion-url"
               }
            ]
         }
      ]
   }
}

I want to push an object to urls array of Nature category. I tried this:

collection.updateOne({"categories.$.categoryName":"Nature"},{$push:{"categories.$.urls":object}},(err, result) => {
    if (err) throw err;
    console.log('Successful');
  });

It returns 'Successful' but nothing change in MongoDB. How can i do this ?

CodePudding user response：

I found solution of my problem. Here is update code:

 collection.updateOne({"data.categories.categoryName":"Nature"},{$push:{"data.categories.$.urls":object}},(err, result) => {
      if (err) throw err;
      console.log('Successful');
      });

CodePudding user response：

Use $set instead of $push

Try this -

collection.updateOne({"data.categories.categoryName":"Nature"},{$set:{"data.categories.urls":object}},(err, result) => {
if (err) throw err;
console.log('Successful');
});