Скачать или смотреть How to Push a Variable to Another Component Array in Vue.js

Learn how to connect two components in Vue.js by pushing a variable from a form to a movie list effectively!
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This video is based on the question https://stackoverflow.com/q/62792794/ asked by the user 'Michele Della Mea' ( https://stackoverflow.com/u/4726997/ ) and on the answer https://stackoverflow.com/a/62793128/ provided by the user 'Raffobaffo' ( https://stackoverflow.com/u/7629020/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

If you've ever worked with Vue.js alongside Laravel, you might have encountered scenarios where you need to manage data between different components. A common use case is entering data through one component and displaying it in another. For instance, you may want to enter a movie name in a form component and see that same name appear in a list component upon submission. If this functionality seems difficult to implement, you're not alone! Let's explore how we can effectively push a variable to another component's array in Vue.js.

Understanding the Problem

In our example, we have two components: FormComponent and ListComponent. The goal is to input a movie name in the FormComponent and, upon clicking the submit button, have that name appear in the ListComponent. However, simply alerting the movie name doesn’t update the list as expected.

Current Setup

The basic setup of our components is as follows:

FormComponent: This is where users input the movie name.

ListComponent: Here, the submitted movie names should be displayed.

In this scenario, we need a way to communicate between these components effectively.

Solution Overview

To solve the problem, we will introduce a new third component that acts as an intermediary. This myForm component will manage the data flow between the FormComponent and the ListComponent.

Step-by-Step Implementation

Step 1: Create the myForm Component

We will set up the new component, myForm.vue, which will render both the input form and the movie list together.

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Step 2: Modify FormComponent

Next, we will update the FormComponent to emit the new movie name when the submit button is clicked.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Update the ListComponent

The ListComponent needs to accept props instead of defining its own list state. This way, it will display the updated movie list received from myForm.

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Update the Template

Finally, update the v-for directive in ListComponent to loop through the props passed down from myForm.

[[See Video to Reveal this Text or Code Snippet]]

Alternative Approach: Using Vuex

If you prefer a more centralized solution or expect to manage larger state across multiple components, consider using Vuex. This state management pattern allows for easier data sharing and manipulation across your components without tightly coupling them.

Summary

By setting up a third component and using event emission, we can smoothly transfer data from FormComponent to ListComponent. This approach not only maintains clarity in communication between components but also simplifies data management:

Emit events from the form to inform parent about new data.

Use props in the list component to use passed down data.

Consider Vuex for more complex applications where state management is necessary.

With this setup, your movie-listing application now works as intended, and you can simply expand upon this functionality as needed. Good luck with your Vue.js adventures!