Question

How can I give a component a template dynamically?

How can I assign a template to a component dynamically in Angular? I need the component's template to change based on conditions like user roles or app state. What’s the best way to achieve this? Maybe you can use ngTemplateOutlet or other Angular techniques. Examples would be helpful

Answer 1

Angular offers three primary approaches to dynamically render templates within components :

1. TemplateRef and ViewContainerRef : This method allows you to create embedded views from a template reference and insert them into a specified container. 

2. ComponentFactoryResolver : This approach enables you to dynamically create instances of other components and insert them into the component’s view. It’s particularly useful for modularizing your application and reusing components.

3. ngTemplateOutlet : This directive provides a simpler way to dynamically render a template. You simply place the template within an <ng-template> element and use the ngTemplateOutlet directive to specify where it should be rendered.

<ng-template #mytemp>

<p>Content </p>

</ng-template>

<div [ngTemplateOutlet] = "mytemp"></div>

The best method to choose depends on your specific use case and the level of control you need over the template. For simple scenarios, ngTemplateOutlet might be sufficient. However, for more complex scenarios where you need to manipulate the template’s content or create dynamic components , TemplateRef and ViewContainerRef or ComponentFactoryResolver might be better suited.