An AngularJS directive with itself as the attribute

03 September 2014   8 comments   AngularJS, Javascript

Mind That Age!

This blog post is 4 years old! Most likely, its content is outdated. Especially if it's technical.

Because this took me quite a while to figure out, I thought I'd share in case somebody else is falling into the same pit of confusion.

When you write an attribute directive in angularjs you might want to have it fed by an attribute value.
For example, something like this:

<div my-attribute="somevalue"></div>

How then do you create a new scope that takes that in? It's not obvious. Any here's how you do it:

app.directive('myAttribute', function() {
    return {
        restrict: 'A',
        scope: {
            myAttribute: '='
        },
        template: '<div style="font-weight:bold">{{ myAttribute | number:2 }}</div>'
    };
});

The trick to notice is that the "self attribute" because the name of the attribute in camel case.

Thanks @mythmon for helping me figure this out.

Comments

Sam

Thanks !!

That use case is almost never highligthed in docs and blogs, but very useful !!

Lisa

Thanks! Been looking all over for this piece of information.

Jupo

great, thanks

Anonymous

If your attribute contains text, use '@' instead of '='.

Anonymous

Thanks Peterbe! Thanks Anonymous!

Anonymous

Thank you

matscr

Im new to angularjs! THIS WAS GOLD! Been struggeling with passing values in directives. Thanks alot for this info that is nowhere to be found but here

Peter

great, thx

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