CODEWITHSUNDEEP
javascriptmeteor
user3848987
user3848987

Reputation: 1657

Set ReactiveDict() variable inside of custom event function

I try to set a ReactiveDict-variable on a custom event inside of on(), but I get this error: Uncaught TypeError: Cannot read property 'templateDictionary' of null.

The second question is, if it would make sense to define the ReactiveDict() in onRendered?

Template.something.onCreated(function() {
    this.templateDictionary = new ReactiveDict();
});

Template.something.onRendered(function() {
    anything.on({
        'element:mouseover': function(elementView, event){
            Template.instance().templateDictionary.set( 'showExtraFields', true );
        }
    });
});

Template.something.helpers({
    anything: function() {
        var result = Template.instance().templateDictionary.get( 'showExtraFields' );
        console.log(result);
    }
});

Upvotes: 2

Views: 94

Answers (2)

ffxsam
ffxsam

Reputation: 27793

I have no idea what anything.on is, but try this:

Template.something.onRendered(function() {
    anything.on({
        'element:mouseover': (elementView, event) => {
            this.templateDictionary.set( 'showExtraFields', true );
        }
    });
});

Use the ES6, Luke!

Upvotes: 0

Jo2015
Jo2015

Reputation: 17

Put instance reference inside onRendered function. Not inside another function. Scope issue.

Upvotes: 2

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