CODEWITHSUNDEEP
meteor
Kinoko
Kinoko

Reputation: 11

Extend a meteor collection server and client side

I am currently developping an app with the amazing Meteor platform. I would like to do something with my collections but I couldn't really find how to do it from the examples I have seen so far.

Basically I would like to display a list of items which contains their own countdown. Each items core data come from a collection. Each countdown starting times must be computed server side and not saved anywhere. Each countdown are computed client side and not saved anywhere.

I have a collection named "items" coming from my MongoDb db. At the beginning document in my collections could look like:

{ name: "My countdown"}

1) I would like to "extend" the documents server side in adding a computed property "startTime". A documents could look like then:

{ name: "My countdown", startTime: 40 }

I guess I need to use the publish method, but I don't really get how to extend existing documents that way.

2) I would like to "extend" the documents client side in adding a local property "currentTime", that i will update with a setInterval. A document could look like then:

{ name: "My countdown", startTime: 40, currentTime: 5 }

Maybe using a transform there but once again I don't really get how to extend existing documents.

3) I would likethoses 2 new properties reactives and so trigger some updates in the UI if they change.

So if i could get any starting points and good pratices it will be really appreciated :)

Many thanks for your help!!

Upvotes: 1

Views: 208

Answers (1)

j6m8
j6m8

Reputation: 2409

You can update a document of a Collection: Best practice is to do this on the server.

client.js

Meteor.call('setStartTime',
            [your_document_id],
            [new_start_time],
    function(err, val) {
        if (err) {
            console.error(err);
        } else {
            // Successful.
    }
});

server.js

Meteor.methods({
    'setStartTime': function(itemId, newStartTime) {
        Items.update(itemId, {
            $set: { startTime: newStartTime }
        });
    }
});

This will set or update the startTime of your item. (Be cautious, as anyone with access to your JavaScript will be able to see your setStartTime call on the client. This is functional, but not secure.)

Upvotes: 0

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