What is the best way to execute a function in Meteor while ensuring it responds reactively

There is a function in my code that handles gui-logic, and I want it to be executed every time a template is updated reactively in Meteor.

I attempted to place the code within the Template.myTemplate.helpers section as shown below, but it caused everything to stop functioning.

Template.ResourceManager.helpers({
        names : function(){
                myFunction();
                return resources.findOne({age : 20}).names;
    }
});

Essentially, I need myFunction() to run whenever any changes occur in the resources collection. I have searched for ways to do this but have not found a suitable method. I have explored autoRun and cursor.dependency, but I am struggling to grasp their functionality and application in this scenario. Any assistance on this matter would be highly valued! Thank you!

javascriptmongodbmeteor

Answer №1

If you want to monitor changes in the resources collection, consider using cursor.observeChanges method.

function trackChanges(id, fields){
  console.log("A change occurred in resources with id", id);
}

var cursor = resources.find();
cursor.observeChanges({
  added: trackChanges,
  changed: trackChanges,
  removed: trackChanges
});

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