Eager Loading: Use `with` on pivot with eloquent relationship
Stefan Bogdanescu
Founder & Senior Architect · 2026-06-29
# Eager Loading: Use `with` on Pivot with Eloquent Relationships
As senior developers working with Laravel and Eloquent, optimizing data retrieval is paramount. One of the most powerful tools we have for this optimization is Eager Loading. While eager loading is fantastic for fetching related models in a single query, dealing with pivot tables and deeply nested relationships often introduces specific challenges. Today, we will explore how to effectively use the `with` method to load not just pivot data, but entire related models, solving the common problem of preloading associated records from pivot relationships.
## Understanding the Data Structure
Let's first establish the context for our query. We have a relational structure involving four tables and three models:
* **`bundles`**: Stores bundle information.
* **`products`**: Stores product details.
* **`prices`**: Stores pricing information.
* **`bundle_product`**: The pivot table linking bundles and products, also holding the `price_id`.
The relationship flow is: A `Bundle` has many `Product`s, and each `Product` is associated with a specific `Price`. We want to fetch all `Bundles`, their related `Products`, and the corresponding `Prices` efficiently.
## The Challenge: Beyond Simple Pivot Data
When defining a many-to-many relationship using `belongsToMany`, we can use `withPivot()` to retrieve custom data from the pivot table. In your initial setup, you successfully retrieved the `price_id`:
```php
// Initial attempt to get just the ID via eager loading
$all_bundles = Bundle::with('products')
->get();
// Retrieving the price ID requires chaining back through the relationship:
$price_id = Bundle::with('products')->first()->products()->first()->pivot->price_id;
```
However, as you correctly noted, fetching just the ID isn't enough. The goal is to load the full `Price` model associated with that product, all within a single, optimized query. We want to avoid subsequent database calls (the N+1 problem) that would occur if we tried to fetch each price individually after retrieving the IDs.
## The Solution: Nested Eager Loading for Full Model Preloading
The solution lies in nesting your eager loads. Since the relationship flows from `Bundle` $\rightarrow$ `Product` $\rightarrow$ `Price`, we must chain these requests within the `with()` method to instruct Eloquent to perform the necessary JOINs to fetch the final related models simultaneously.
Assuming you have correctly defined your relationships (e.g., `Bundle` has `products()`, and `Product` has a `price()`), here is how you preload the entire hierarchy:
```php
$all_bundles = Bundle::with('products.price')
->get();
```
### Deep Dive into the Eager Load
When Eloquent sees `with('products.price')`, it intelligently constructs a highly efficient query. It performs the initial query for `bundles`. Then, based on those bundles, it finds all associated products (using the pivot table), and finally, using the product IDs retrieved, it fetches all related prices in a minimal number of queries (ideally just two or three optimized joins). This is significantly more performant than executing separate queries.
To illustrate this with a hypothetical scenario:
```php
// In your Bundle model:
public function products()
{
return $this->belongsToMany(Product::class)->withPivot('price_id');
}
// And in your Product model:
public function price()
{
return $this->belongsTo(Price::class);
}
```
The final retrieval becomes straightforward and efficient:
```php
$all_bundles = Bundle::with('products.price')->get();
foreach ($all_bundles as $bundle) {
echo "Bundle: " . $bundle->name . "\n";
foreach ($bundle->products as $product) {
// Accessing the preloaded price model directly!
echo " Product: " . $product->name . ", Price: " . $product->price->name . "\n";
}
}
```
## Conclusion
Eager loading with nested relationships is a cornerstone of high-performance Laravel applications. By moving beyond simple pivot data and instructing Eloquent to load the entire chainâ`Bundle` $\rightarrow$ `Product` $\rightarrow$ `Price`âwe ensure that we minimize database round trips. This pattern demonstrates how powerful Eloquent's relationship system is for managing complex relational data efficiently, aligning perfectly with best practices promoted by the Laravel ecosystem, such as those found on [laravelcompany.com](https://laravelcompany.com). Mastering this technique will lead to cleaner, faster, and more scalable database interactions in your projects.