Within my application architecture, I have a primary component that encapsulates several subordinate components. The objective is for the main component to manage the state of all its child components. Whenever a child component is clicked, it should notify the parent component so that all siblings can be updated accordingly.
Vue.component('child', {
template: '#childtemplate',
props: ['index', 'activeIndex'],
methods: {
updateActiveIndex: function() {
console.log("emitting");
this.$emit('updateEvent', this.index);
}
}
});
Vue.component('parent', {
data: function() {
return {
activeIndex: 0
}
},
render: function(createElement) {
console.log("rendering ai->", this.activeIndex);
this.$options._renderChildren.forEach(function(item, index) {
if (item.data === undefined)
return;
item.componentOptions.propsData = {
index: index,
activeIndex: this.activeIndex
}
}.bind(this));
return createElement('div', {}, this.$options._renderChildren);
},
methods: {
handleToggle: function(index) {
this.activeIndex = index;
}
},
created: function() {
this.$on('updateEvent', this.handleToggle);
setTimeout(function(){this.activeIndex = 6}.bind(this), 3000);
}
});
new Vue({
el: '#app'
})
I've explored different strategies such as adding event listeners to the `createElement` function in the `parent` component's `render()` method and setting an `$on` listener in the `created` lifecycle hook of the `parent`. However, these attempts were unsuccessful.
To work around this issue, I devised a temporary solution by directly referencing a `$parent` callback from the child component, passing an index value upwards. This approach triggers vue warn errors but accomplishes the task at hand.
Is there a more elegant solution available?