How can I create my mongodb request based on user input in node.js?

Question

Currently, my application stores various forum posts. Users can add new messages and create new messages. Other users - when displaying content - can filter it so that they do not see the content downloaded by specific users that they blocked earlier.

Each user is presented as a combination of device_idand display_name.

When users upload content, they execute a request postand include an array of previously blocked users:

"blockedUsers": (
{
    "device_id" = "XXX";
    "display_name" = XXX;
},
{
    "device_id" = "YYY";
    "display_name" = YYY;
}
)

Currently, it is possible to add content with some registered name display_name or anonymously.

display_name:

if(blockedUsers) {
    var excludedUsernames = [];

    for(var i in blockedUsers) {
         excludedUsernames.push(blockedUsers[i]['display_name']);
    }

    query.$and.push({ 'display_name': { $nin: excludedUsernames } });
}

- - display_name ( anonymous) - , device_id, , , display.name.

, :

"blockedUsers": (
{
    "device_id" = "XXX";
    "display_name" = "anonymous"; //represents anonymous user
},
{
    "device_id" = "YYY";
    "display_name" = "anonymous"; //represents anonymous user
}
)

device_id display_name == anonymous. , - device_id, display_name!= anonymous - .

, , , ? !

Answer 1

:

• device_id,
• display_name,

, anonymous .

---

let excludedUsernames, excludedDevices;

blockedUsers.forEach((e) => {
    excludedUsernames.puhs({ e["display_name"] });
    excludedDevices.push({ e["device_id"] });
});

query.$and.push({ 'display_name' : { $nin: excludedUsernames } });
query.$and.push({ 'device_id'    : { $nin: excludedDevices   } });

query.$or.push({
    $and: [
        { 'device_id'    : { $nin: excludedDevices }},
        { 'display_name' : "anonymous" }
    ]
});
query.$or.push({ 'display_name' : { $nin: excludedUsernames } });