Ember.js: TextField with dynamic binding

Question

I want to bind a TextField to a property which is specified by a string variable (see the edit for a better explanation), as in this question. Unfortunately the answer that was

Answer 1

You can bind input values with dynamic keys(variables) of objects with help of mut helper now.

https://guides.emberjs.com/v2.6.0/templates/input-helpers/#toc_binding-dynamic-attribute

We can bind key in input helper like this,

{{input value=(mut (get Object key))}}