Скачать или смотреть How to Make a Composable Universal in Vue.js – A Step-by-Step Guide

Discover how to create a versatile `composable` in Vue.js that works across multiple components, enhancing code reusability and efficiency.
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This video is based on the question https://stackoverflow.com/q/77574835/ asked by the user 'Michael' ( https://stackoverflow.com/u/20343913/ ) and on the answer https://stackoverflow.com/a/77576923/ provided by the user 'Jaromanda X' ( https://stackoverflow.com/u/5053002/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the Problem of a Universal Composable in Vue.js

Creating a universal composable in Vue.js can be particularly challenging, especially when you're dealing with multiple components that require similar functionality with differing data structures. This post will help you navigate this problem using a practical example involving three components: ItemSwiper, ItemCard, and ViewRecipeDetail.

Understanding the Components

The Project Structure

You have three components that play a vital role in displaying recipe information:

ItemSwiper: A parent component that loops through recipes and creates slides.

ItemCard: A child component used within ItemSwiper to display details of each recipe.

ViewRecipeDetail: Displays detailed information about a recipe.

The Challenge

You'd like to extract a function responsible for image preloading and URL generation into a composable function called useRecipe. This function should work with both ItemCard and ViewRecipeDetail, even though the data structure differs between the two components.

Creating a Universal Composable

Step 1: Redefine the Composable Function

The original useRecipe wasn't versatile enough to handle the different contexts. Here’s how to revise it:

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

Step 2: Update the ItemCard Component

The ItemCard component will get its image source and loading status from the useRecipe composable module. Here’s how you update it:

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

Step 3: Configure the ViewRecipeDetail Component

The ViewRecipeDetail component applies a similar composable but works slightly differently since it pulls from a store:

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

Final Thoughts

Creating a composable that works universally across different components in Vue.js requires careful structuring of data handling and function scopes. The revised useRecipe composable allows for a single source of truth for image preloading, simplifying your components and enhancing code reusability.

If you encounter any issues or have further inquiries, feel free to ask. Happy coding!