Keypress Lagging woes: Latest Meteor Update

While I am updating a MongoDB model immediately upon keypress, it seems to lag behind due to the value being attached to that model. What would be the most effective way to update the model both on keypress and when refreshing the page so that the input remains populated? Could it be better to just populate the input once onRendered (ensuring that the value is not directly attached to the database object)?

<input type="text" id="name" value="{{getName}}" required autofocus>


Template.campaignEditDetails.events
    "keyup input": (e, t)->
        val = e.currentTarget.value
        field = e.currentTarget.id
        Meteor.call "upsertCampaignField", t.data.campaignId, field, val, t.data.appId

Could the reason for this issue be related to using meteor.call for the update instead of executing it directly on the client side (which is necessary because it's an upsert operation)?

javascriptmongodbmeteor

Answer №1

Is it safe to assume that your getName helper retrieves that data from the database? If this is the case, the delay is not in saving to the DB, but in reading the oplog and updating the field with the database contents.

Instead of making the value reactive, consider setting it as a default value. Use 

return coll.findOne({foo: bar}, {reactive:false}).txt
. This way, you will still see the stored text upon reloading, but you won't be querying the DB for every character inputted.

Furthermore, think about utilizing the input event or at least comparing values before making updates. It's unnecessary to query the database each time the user presses the up arrow key.

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