How to insert multiple rows from a single query using eloquent/fluent

How to Insert Multiple Rows from a Single Query Using Eloquent/Fluent

Are you struggling with inserting multiple rows from a single query using Eloquent/Fluent? 🤔 Don't worry, you're not alone! Many developers find this task challenging, but fear no more. In this blog post, we'll walk you through the common issues and provide easy solutions to help you achieve your goal effortlessly. Let's get started! 🚀

The Problem

Let's say you have the following query:

$query = UserSubject::where('user_id', Auth::id())->select('subject_id')->get();

This query returns a result like this:

[{"user_id":8,"subject_id":9},{"user_id":8,"subject_id":2}]

And you want to copy this result into another table, so it looks like this:

ID|user_id|subject_id
1 |8      |9
2 |8      |2

The challenge here is that the $query can have any number of rows, and you're unsure how to iterate through an unknown number of rows. 😓

The Solution

To solve this problem, we can use the insert() method provided by Eloquent/Fluent. This method allows us to insert multiple rows from a single query.

Here's how you can do it:

1. Get the result from the $query by calling the toArray() method:

   $result = $query->toArray();

2. Assign the user_id value to each row in the result. We'll use the map() method to iterate through each row and update the value:

   $result = collect($result)->map(function ($row) { $row['user_id'] = Auth::id(); return $row; });

3. Use the insert() method to insert the transformed result into the new table, assuming the new table is named new_table:

   DB::table('new_table')->insert($result->toArray());

That's it! 🎉 You have successfully inserted multiple rows from a single query using Eloquent/Fluent.

Conclusion

Inserting multiple rows from a single query can be a stumbling block, but with this handy solution using Eloquent/Fluent, it's a piece of cake! 🍰 Give it a try and let us know how it worked for you.

If you have any questions or alternative approaches, feel free to share them in the comments below. We'd love to hear from you! 💬