Wsrtjtyk

I have multiple conditions for the query in my controller that I need path if exists.

condition 1 :

{ tags: mongoose.Types.ObjectId(req.params.tagId)}

condition 2:

{ reportedBy: { '$ne': req.user._id }} // if this video object reported dont show

condition 3:

{ owner: { '$ne': userblocks } } // userblocks is a array of objectIds

so this is my $match filter:

{

 '$match':

   _.isString(req.params.tagId) ?

   { tags: mongoose.Types.ObjectId(req.params.tagId), 

   reportedBy:{ '$ne': req.user._id}, owner: { '$ne': userblocks}}:

   { reportedBy:{ '$ne': req.user._id},owner: {'$ne': userblocks}}

},

I used ... spread operator if tagId passed to params.this condition works for tagId but other conditions are not working.

with @Anthony Winzlet hint I tried to :

{reportedBy:{ '$ne': mongoose.Types.ObjectId(req.user._id)},owner: {'$ne': userblocks}} 

and userblocks is a list of objects, I checked the type of them and they are objects too.so no need to cast them to objectIds.

Try something like this:

let $match = {

   reportedBy: { '$ne': mongoose.Types.ObjectId(req.user._id) },

   owner: { '$nin': userblocks } // $nin when comparing against array of object ids

},



if(_.isString(req.params.tagId)) {

   $match.tags = mongoose.Types.ObjectId(req.params.tagId)

}

Then just use $match in your aggregation pipeline or as part of whatever else parts of the pipeline you would have.

Things to note:

• When comparing to _id mongoose.Types.ObjectId function should be used.


• When comparing against an array $in or $nin are usually what you would want to use.


• It seems in your _.isSting check logic you had reportedBy and owner in both scenarios so it seems to me some refactoring would not hurt.