Скачать или смотреть How to Efficiently Use Eloquent with POST Method Data in Laravel

Learn how to implement Eloquent queries in Laravel using POST method data to fetch results effectively based on city searches.
---
This video is based on the question https://stackoverflow.com/q/63011330/ asked by the user 'Muamar Humaidi' ( https://stackoverflow.com/u/12463000/ ) and on the answer https://stackoverflow.com/a/63011502/ provided by the user 'Ranjeet' ( https://stackoverflow.com/u/11361537/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to Implement or where in Laravel Eloquent with post method array data?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Mastering Laravel Eloquent: Implementing Search with POST Method Array Data

In the world of web development, efficiently retrieving data based on user input is essential. If you’re using Laravel, the Eloquent ORM provides a powerful and elegant way to interact with your database. Today, we’re tackling a common query that many developers encounter: How to implement Eloquent with POST method array data?

The Problem: Retrieving Cities Based on User Input

Imagine you are building a system where users need to search for orders based on cities. You have a MySQL database that houses this information, and you want to allow users to search orders by multiple city names provided via a POST request.

Your initial SQL query looks something like this:

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

When sending a POST request, you might receive cities like this:

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

You attempted to build your query in the controller but found that you weren't getting any data back, even though you expected results.

The Solution: A More Efficient Query Using Eloquent

Step 1: Initializing the Query

Instead of looping through each city for a WHERE condition, you can simplify your approach. Start by initializing your Eloquent query.

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

Step 2: Focus on the Input Data

Next, check if the request contains the city names. The has method will allow you to ascertain whether the city_name field is present in the incoming request.

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

Step 3: Efficiently Handle the Multiple Inputs

Instead of using loops, which can lead to complexity and potential mistakes, you can succinctly filter results by utilizing the whereIn method. This method checks if the city is part of the array that you received from your POST request.

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

Step 4: Ordering and Fetching Results

Finally, order the results and retrieve them using the get method. Here's how the complete solution looks:

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

Why This Works

Efficiency: Using whereIn helps you avoid multiple SQL calls, as this function generates a single SQL query with an IN clause.

Readability: The code is much cleaner and easier to understand at a glance.

Performance: This approach also enhances performance, especially when dealing with large datasets, as it minimizes the number of queries made to the database.

Conclusion

Using Laravel Eloquent with POST method data can be seamless and efficient when you leverage the right functions. Rather than building complex loops, embrace the capabilities of Eloquent to streamline your queries. This not only boosts performance but also improves code maintainability that is crucial for any growing application.

By implementing the solution above, you should now be able to retrieve results based on user-provided cities successfully. Happy coding!