Is it possible to retrieve a specific element from an array using variable references in Meteor's spacebars?

Within a spacebars template, there is a javascript array called x and an index referred to as i, for example:

Template.test.helpers({
    'foo': function() {
        return {
            x: ['aa','bb','cc'],
            i: 1
        }
    }
});

It is possible to access specific elements of the array x in the template using {{ x.[1] }}:

{{template name="test"}}
    {{#with foo}}
        {{x.[1]}}
    {{/with}}
{{/template}}

However, the expression {{ x.[i] }} does not yield the desired outcome.

Can someone suggest a way to properly access x[i]? Thank you!

javascripttemplatesmeteorspacebars

Answer №1

To address this issue, a personalized helper can be established:

Template.solution.helpers({
    'retrieveElement': function(array, index) {
        return array[index];
    }
});

Once the custom helper is defined, it can be implemented in the template as follows:

{{ retrieveElement x i }}

Answer №2

When looking at a simple example like this, I find that utilizing a helper function is the most direct solution. However, it is essential to aim to separate the logic from the view layer (helpers & html). If spacebars feels limiting, it serves as a gentle nudge to reorganize the code.

For more intricate issues, a more organized approach would involve resolving x[i] beforehand or transforming x into an object. One option is to store x[i] in a data context or a module object for direct access. Relying on array indexes can lead to confusion when revisiting the code in the future...

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