angular-formly provides a very simple API to dynamically change properties of your field (like disabled, hidden, and required) using the powerful expressionProperties property on your field.

 

(function() {    'use strict';    var app = angular.module('formlyExample', ['formly', 'formlyBootstrap']);    app.controller('MainCtrl', function MainCtrl() {        var vm = this;        vm.model = {};        vm.fields = [            {                type: 'checkbox',                key: "control",                templateOptions: {                    label: 'Click to show'                }            },            {                type: 'input',                key: "nothing",                templateOptions: {                    label: "Show when checkbox checked"                },                expressionProperties: {                    hide: function($viewValue, $modelValue, scope) {                        console.log(scope.model.control);                        return !scope.model.control;                    }                }            }        ];    });})();