Bind checkbox to element of one array in Ember 2+

I'm trying to bind elements of one array to the checked attribute of checkboxes using Ember 2.8. I'm also using this in one component.

The checkboxes show all marked, but whenever I tried to use the action hideOrShowAllColumns it does not mark all checkboxes again if there was one which was not checked... so I guess I'm passing the value of the array element and not the element itself. I don't know how to do this in javascript/ember...

This is my view

 
All

    
    

This is my component.js

export default Ember.Component.extend({
    init() {
        this._super(...arguments);
        this.set('allColumnsChecked', true);
    },
    didReceiveAttrs() {
        this._super(...arguments);
        let columnMap = this.get('columnMap');
        let allColumns = Array(columnMap.length).fill(true);
        this.set('allColumns', allColumns);
    },
    actions: {
         hideOrShowAllColumns() {
            let all = this.get('allColumnsChecked');
            all = !all;
            this.set('allColumnsChecked', all);
            if (all === true) {
                let allColumns = this.get('allColumns');
                allColumns = allColumns.map(() =>  true);
                this.set('allColumns', allColumns);
            }
        },
}

Helper getItemAt

export function getItemAt(params) {
    return params[0][params[1]];
}