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A detailed guide on how to fetch and count referred users in your Laravel application by utilizing Eloquent relationships.
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This video is based on the question https://stackoverflow.com/q/62840052/ asked by the user 'Adewale Charles' ( https://stackoverflow.com/u/8701319/ ) and on the answer https://stackoverflow.com/a/62840639/ provided by the user 'Makdous' ( https://stackoverflow.com/u/10084851/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to List All Users and Count Their Referrals in Laravel

If you're developing a referral system in your application, you might find yourself in a position where you need to display a list of all users along with counting how many people each user has referred. This information can be crucial for administrators who manage referral campaigns or keep track of engagement metrics. In this guide, we will explore how to achieve this using Laravel's Eloquent relationships.

Problem Statement

You already have a user model and a referral model set up, but your challenge is to return a user list where each entry shows not only the user but also how many people they have referred. Let's break down the requirements into manageable parts.

Understanding Your Models

Let's revisit your existing models for a better understanding.

User Model

In your User class, you have defined two relationships:

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referrals(): This method fetches all referrals for a user, meaning all users they have referred.

referrer(): This establishes a relationship where a user can have one referrer.

Referral Model

Your Referral model also has relationships defined:

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Migration

The structure of your referrals table is as follows:

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This table keeps track of who referred whom and their current status.

Solution: Listing Users With Referral Counts

Step 1: Using Eloquent Relationships

To retrieve users who have referred others and count these referrals, you'll want to leverage two powerful Eloquent features:

has(): This limits your results based on the existence of a relationship.

withCount(): This counts the number of results from a relationship without loading them.

Step 2: Implementing the Query

Here’s the code you’ll need to run:

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Explanation:

User::has('referrals'): This limits your query to only select users who have at least one referral record.

withCount('referrals'): This counts the number of referrals each user has made without needing to load all referral records into memory. The result is efficient and keeps your application running smoothly.

Step 3: Displaying the Results

Now that you've executed the query, you can easily iterate through the result set and display each user's name alongside their referral count.

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Conclusion

By following these steps, you'll be able to create an efficient and functional admin feature that lists users along with their respective referral counts in Laravel. This not only enhances your referral system but also offers valuable insights for potential monetization through user referrals.

In summary, utilizing Eloquent's relationships allows you to efficiently query and display complex data structures while keeping your code clean and manageable.

Happy coding, and may your referral system thrive!