How to call a function inside a directive from the parent controller?

Question

JavaScript

What we have:
A huge table inside the cells of which there is a directive.
The directive has a function that modifies the value of the model.
It is necessary to call the function of a specific directive from the controller of the page on which the directives are located.
For example, here is a pseudo-code sketched plnkr.co/edit/zYzi3Pu1tTx0nG3iPZDs?p=preview
It is necessary to call the setRandom() function of the directive in the ctrl controller loop.
How can this be done, given that there can be hundreds of directives on a page?

Answer 1

For example , using events .