What is the best way to retrieve a document from a collection in a Meteor application?

Question

What is the best way to retrieve a document from a collection in a Meteor application?

My experience with mongodb is very limited, so I need help on how to retrieve a document from a meteor collection. I am trying to check if a document exists for the user and update it with an object.

            if (Saves.find({_id: Meteor.userId()}).fetch()) {

                    console.log("Before " +Saves.find({_id: Meteor.userId()}).fetch())
                    if (Meteor.isServer){
                    Saves.update( {_id: Meteor.userId(), save: save} )
                    }
                    console.log("Success " + Saves.find({_id: Meteor.userId()}).fetch())

I am trying to log the "save" object using console.log, but currently all I get is either nothing or [object Object] if I do not use fetch() (which outputs a cursor object).

javascript mongodb meteor

Answer 1

Answer №1

It's important to note that Collection.find() will return a cursor, while Collection.find().fetch() will give you the actual document.

It seems like you are attempting to update some data. Here's a potential solution (untested):

var cursor = Saves.find({ _id : Meteor.userId() /* , save : { $not : true } */ });

cursor.forEach(function(item) {
    console.log(item);
    Saves.update({ _id : item._id }, { $set : { save : true } });
});

To make use of latency compensation and ensure proper permission, you should wrap this in a Meteor method and use Collection.update.

Answer 2

It's important to note that Collection.find() will return a cursor, while Collection.find().fetch() will give you the actual document.

It seems like you are attempting to update some data. Here's a potential solution (untested):

var cursor = Saves.find({ _id : Meteor.userId() /* , save : { $not : true } */ });

cursor.forEach(function(item) {
    console.log(item);
    Saves.update({ _id : item._id }, { $set : { save : true } });
});

To make use of latency compensation and ensure proper permission, you should wrap this in a Meteor method and use Collection.update.

What is the best way to retrieve a document from a collection in a Meteor application?

Answer №1

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