Pass parameters to template without overriding data context

Question

I want to pass a new parameter to a template with keeping it\'s original data context.

• original data context : {message:\"hello\"} {{> myTemplate withIc

Answer 1

You can always extend the current context in a helper:

Template.parentTemplate.helpers({
  iconContext: function() {
    var result = _.clone(this);
    result.withIcon = true;
    return result;
  }
});

And use it like this:

Alternatively, you could create a more generic helper like this:

Template.registerHelper('extendContext', function(key, value) {
  var result = _.clone(this);
  result[key] = value;
  return result;
});

And then choose the key/value pairs from within the html of any template:

Either solution is more desirable than hiding the original data in a separate field, as it keeps the child template generic.