Laravel query builder - re-use query with amended where statement
Stefan Bogdanescu
Founder & Senior Architect · 2026-06-29
Title: Efficiently Reusing Laravel Queries with Customized Date Ranges
Body:
One common challenge faced by developers is building complex queries that dynamically generate reports based on various parameters, including date ranges and other filters. This blog post aims to address a particular case where you want to use the same query while amending only the date range portion of it. The goal is to find a cleaner and more efficient solution than simply modifying pre-set values or rebuilding the entire query.
First, let's examine the existing code structure with a basic example:
```php
$this->data_qry = DB::table('customers')
->join('transactions', 'customers.id', '=', 'transactions.customer_id');
// Other joins, wheres, sorts, limits are present here.
$new_from_date = "2021-03-01";
$new_to_date = "2021-05-31";
$this->data_qry->wheres[0]['value'] = $new_from_date;
$this->data_qry->wheres[1]['value'] = $new_to_date;
// Run the query once.
$this->data_qry->get();
```
In this scenario, changing the values in the wheres array doesn't seem to work correctly. The original date range is still being used. You could rebuild the entire query with a new date range but that wouldn't be efficient or maintainable if you have several instances of similar queries.
There are two potential solutions to overcome this issue:
1. Use Laravel Query Scopes for custom date ranges:
Create a new scope on your model that accepts the desired date range and performs the query accordingly. This allows you to call the same model method but with different parameters. This approach ensures that each instance of the query can have its own unique date range. It also maintains good separation between business logic (query building) and data access (where the database is being queried).
An example using a "date_range" scope could be:
```php
use Illuminate\Database\Eloquent\Builder;
class Customer extends Model {
// ...other code
public function scopeDateRange(Builder $query, $fromDate, $toDate) {
$this->data_qry = DB::table('customers')
->join('transactions', 'customers.id', '=', 'transactions.customer_id');
// Other joins, wheres, sorts, limits are present here with custom date range logic.
return $this->data_qry;
}
}
```
In your application:
```php
$customers = Customer::dateRange($new_from_date, $new_to_date)->get();
```
2. Use Laravel's Query Builder and Pagination to achieve the desired result:
The original query can be reused by using Laravel's Query Builder with a custom scope to retrieve the data as a collection or a Model instance. Then, you would apply pagination based on the specific date range for reports generation. This solution leverages Eloquent's built-in features and provides better control over what is being queried in which order. A sample code snippet could look like this:
```php
use Illuminate\Support\Facades\DB;
// Create a scope on the Customer model that returns the query builder instance.
class Customer extends Model {
// ...other code
public function scopeBuilder(Builder $query, $fromDate, $toDate) {
$custom_qry = DB::table('customers')
->join('transactions', 'customers.id', '=', 'transactions.customer_id');
// Other joins, wheres, sorts, limits are present here with custom date range logic.
return $custom_qry;
}
}
```
To use it:
```php
$customers = Customer::builder($new_from_date, $new_to_date);
// Apply pagination or other filters on the collection as needed.
$customers = $customers->paginate(10);
```
Both these solutions offer a cleaner approach to reusing and customizing Laravel queries based on different date ranges. They also ensure better maintainability and separation of concerns by keeping business logic separate from data access.