I am trying to build a directive with angular.
Here is the plunker
I wanted to split it into 3 directives:
This line causes that error:
The reason is a combination of factors. First, AngularJS always normalizes directive declarations, so data-date-block
(or x-date-block
, data:date:block
etc.) is actually treated as date-block
. Therefore, the above line is equivalent to:
Now, the dateBlock
directive is declared with restrict: 'AE'
, so it can be applied as either an element or attribute. Therefore, the above line resulting in AngularJS applying the dateBlock
directive to the element twice.
That per se doesn't cause the error, but dateBlock
declares a template and AngularJS doesn't allow an element to have 2 templates (it doesn't make sense anyway, which template should AngularJS choose?), so it throws an error.
There are several ways to fix it.
Restrict the directive to E
so that AngularJS doesn't treat data-date-block
as a directive.
Rename the isolated scope property dateBlock
to something else.
Use the attribute form of the directive and use