Скачать или смотреть How to Retrieve User Profiles by Location in Laravel with Spatial Queries

Discover how to efficiently fetch user profiles within a defined distance from a selected city in your Laravel application using the `laravel-mysql-spatial` package.
---
This video is based on the question https://stackoverflow.com/q/64915770/ asked by the user 'Dragos Stoenica' ( https://stackoverflow.com/u/9319219/ ) and on the answer https://stackoverflow.com/a/64916772/ provided by the user 'apokryfos' ( https://stackoverflow.com/u/487813/ ) 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: Get all profiles in lat/long + range (laravel - laravel-mysql-spatial)

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.
---
How to Retrieve User Profiles by Location in Laravel with Spatial Queries

In today's tech-driven world, location-based services are more important than ever. If you're working on a Laravel application that requires users to find profiles based on location, you may face challenges in implementing this functionality. One common scenario is needing to fetch all user profiles that are located within a certain distance of a selected city.

In this post, we'll explore how to use the laravel-mysql-spatial package to efficiently retrieve user profiles within a specified range from a selected city. We'll break down the key elements of this solution so you can integrate it into your own Laravel application seamlessly.

Understanding the Problem

Imagine you're building a community app where users can find profiles based on their proximity to certain cities. Each user profile is linked to a city which has geographic coordinates stored in a POINT() field. The goal is to display user profiles that fall within a certain radius (e.g., X kilometers) around a selected city.

To achieve this, you need to utilize the ST_DISTANCE_SPHERE MySQL function, which calculates the distance between two geographical points. Laravel’s Eloquent ORM makes it easier to work with these spatial queries, but getting everything configured correctly can be a bit tricky.

Setting Up Your Models

Before we dive into the query, let’s clarify the structure of our models:

User Model: Each user has one profile.

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

Profile Model: Each profile belongs to a user and a city.

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

City Model: Each city can have multiple profiles, and it includes spatial fields for location.

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

Implementing the Spatial Query

Now that we have our models set up, let’s write the Eloquent query to find the user profiles within the desired range. The key here is using whereHas() to check profiles associated with cities.

Step-by-Step Implementation

Fetch the City Location: First, you need to obtain the location of the city selected by the user.

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

Querying Profiles: Next, modify the user query to include a condition that filters profiles based on their spatial distance from the selected city.

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

Complete Query Example

Bringing it all together, your complete query might look something like this:

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

Conclusion

With this approach, you can easily filter user profiles based on proximity to a selected city using the power of the laravel-mysql-spatial package. By utilizing spatial queries, your application can efficiently serve location-based data, enhancing user experience.

This is just one way to implement location-based querying in Laravel, but with the flexible nature of Eloquent and the capabilities of MySQL’s spatial features, you have a powerful toolkit at your disposal.

If you have further questions or need clarification on any points, please feel free to ask! Happy coding!