ng-click change parent class

Question

I'm attempting to build a simple slide out menu, I have it working fine using the menu button.

<div class="menu-button" ng-click="show_menu = !show_menu"></div>

<div class="side-menu" ng-class="{true: 'show_menu'}[show_menu]">
        <div class="filters-generic filter-{{filter.filter_type}}" ng-repeat="filter in filters" ng-click="show_menu = !show_menu;filterby(filter.filter_type)">{{filter.filter_type}}</div>
</div>

CSS

.side-menu {
  left: -25%;
  position: absolute;
  transition: all 0.2s linear 0s;
  width: 25%;
  background: #000;
}

.side-menu.show_menu {
    left:0%;
}

When I press the menu-button div it works fine (ie it adds the class), however I also want to be able to close the menu when an item inside it is picked, I have tried the above but nothing is happening.

I thought originally it had to do with the fact that its calling another function too, but I even removed that and there's still the same issue. Am I misunderstanding how ng-click works?

Answer 1

ng-repeat directive create new scope - child to scope where your show_menu exists. So by clicking on menu item (some filter I think) you is changing show_menu in that child scope actually. But ng-class watches for show_menu in parent scope, which was not changed.

For more information read here: https://github.com/angular/angular.js/wiki/Understanding-Scopes

PS : You can write ng-class :

<div class="side-menu" ng-class="{ 'show_menu': show_menu }">

which much more concise and clearly, I think.