How to Create Controller With Own Model Without Route In Ember.js?

In Ember.js, you can create a controller with its own model without defining a route explicitly. To do this, you can directly set the model property on the controller in the setupController hook of your route. This allows you to define a custom model for the controller without creating a corresponding route. By doing this, you can have more control over the data that is passed to the controller without having to define a specific route for it. This can be useful in cases where you want to reuse a controller with different models or when you want to have more flexibility in defining the data for a specific controller.

How to handle data binding in a controller in Ember.js?

In Ember.js, data binding in a controller can be handled using computed properties. Computed properties allow you to define dependencies on other properties and automatically update the bound properties when the dependencies change.

Here's an example of how to handle data binding in a controller in Ember.js:

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import Controller from '@ember/controller';
import { computed } from '@ember/object';

export default Controller.extend({
  firstName: 'John',
  lastName: 'Doe',

  fullName: computed('firstName', 'lastName', function() {
    return `${this.get('firstName')} ${this.get('lastName')}`;
  })
});

In this example, we have a controller with two properties firstName and lastName. We define a computed property fullName that depends on firstName and lastName. Whenever firstName or lastName changes, the fullName property will automatically update.

You can then bind to fullName in your template like so:

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{{fullName}}

This will display the full name John Doe in your template and automatically update whenever firstName or lastName changes.

By using computed properties, you can easily handle data binding in a controller in Ember.js and keep your code clean and efficient.

What is Ember.ControllerMixin in Ember.js?

Ember.ControllerMixin is a Mixin in Ember.js that provides a way to define functions and properties that can be shared among multiple controllers in an Ember application. By using the Ember.ControllerMixin, you can easily add functionality to different controllers without repeating the code. This mixin includes properties and functions that are commonly used in Ember controllers, such as model, actions, and queryParams. By including this mixin in a controller, you can access these properties and functions within that controller.

What is Ember.Component in Ember.js?

Ember.Component in Ember.js is a class that is used to define and create reusable UI components in an Ember.js application. Components in Ember.js encapsulate a piece of UI functionality and can be used multiple times throughout the application. Components have their own template, JavaScript logic, and CSS styles, making them self-contained and reusable. Components can have their own properties and actions, allowing for dynamic behavior and interactivity.

How to create a controller with computed properties in Ember.js?

To create a controller with computed properties in Ember.js, you can use the Ember.Controller.extend() method and define the computed properties within the computed object. Here's an example:

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import Ember from 'ember';

export default Ember.Controller.extend({
  firstName: 'John',
  lastName: 'Doe',
  
  fullName: Ember.computed('firstName', 'lastName', function() {
    return `${this.get('firstName')} ${this.get('lastName')}`;
  }),

  fullNameLength: Ember.computed('fullName', function() {
    return this.get('fullName').length;
  }),

  actions: {
    updateFirstName(newFirstName) {
      this.set('firstName', newFirstName);
    },

    updateLastName(newLastName) {
      this.set('lastName', newLastName);
    }
  }
});

In the above example, we have created a controller with two properties firstName and lastName. We then define two computed properties fullName and fullNameLength using the Ember.computed() function. The fullName property returns the full name by concatenating the firstName and lastName properties, while fullNameLength returns the length of the fullName property.

We also have two action methods updateFirstName and updateLastName which can be used to update the firstName and lastName properties respectively.

You can then use these computed properties in your template like so:

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{{fullName}}
{{fullNameLength}}