Скачать или смотреть Mastering q-select in Quasar: Filtering JSON Object Options with Vue Composition API

Discover how to effectively filter JSON object options in a Quasar `q-select` component using the Vue Composition API. This guide offers step-by-step instructions and code examples for seamless integration.
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This video is based on the question https://stackoverflow.com/q/73584570/ asked by the user 'Qiuzman' ( https://stackoverflow.com/u/5021945/ ) and on the answer https://stackoverflow.com/a/73585125/ provided by the user 'WillD' ( https://stackoverflow.com/u/9242225/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Mastering q-select in Quasar: Filtering JSON Object Options with Vue Composition API

When working with data-heavy applications, especially those that involve user selections, it’s crucial to provide an efficient and user-friendly experience. One common challenge developers face is how to filter through large sets of data within a q-select component in Quasar when the options are provided as JSON objects. In this guide, we will explore how to overcome this hurdle utilizing the Vue Composition API.

The Challenge

Suppose you are building a stock portfolio application. You need to fetch stock symbols from an API and allow users to filter through this list as they type. The data you receive is in the following JSON format:

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With around 20,000 records in this response, displaying them in a q-select while providing a meaningful filtering capability can be challenging. You may find it difficult to filter options based on the users' input.

Let’s walk through how to implement a filtering function for q-select effectively.

Solutions Breakdown

1. Store a Copy of the Response Data

First, it is essential to keep a complete copy of the response data for filtering purposes. This means storing your fetched data in a separate variable that you won't modify directly when displaying options. Here’s how to set that up in your component:

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2. Load Data from API

Next, modify your loadData function to fetch data and populate both the stockTickers for display and allResponseData for filtering. Here’s an example:

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

3. Implement the Filtering Function

The filtering function should take the user's input and filter the original data stored in allResponseData. This is how you can implement it:

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

This code snippet allows the filtering to happen dynamically, showing only the items that match the input.

4. Integrate into q-select

Finally, integrate everything into your q-select component to ensure the filtering works effectively:

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

Conclusion

By following these steps, you should be able to effectively filter a large set of JSON object options in your q-select component using the Vue Composition API. This implementation allows users to search dynamically without overwhelming them with a long list of options. Happy coding, and may your projects thrive!