Concatenation with Blade in Laravel
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Dynamic Concatenation with Blade in Laravel for Table Column Names
Body:
When working on a web application using Laravel, you may need to dynamically concatenate values from an array along with another identifier to create unique column names in your database table. In this comprehensive guide, we'll explain how to achieve this in Laravel using Blade view templates and PHP.
To begin with, let's define the problem given and break it down step by step:
1. We need to access a specific database table using our ItemController class.
2. In this example scenario, you have an array called `$itemsList` containing four items: 'Alpha', 'Bravo', 'Charlie', and 'Delta'.
3. You're retrieving data from the database through PHP using the returned row values in the `$results` variable.
4. You want to display this information on a webpage using Blade view templates. The template should iterate over the items list, showing each item with its corresponding data from the database.
5. The concatenated column name format is: `$rs->name_data`, where 'name' refers to the array's value and '_data' refers to the additional information related to that particular record.
We'll now show how this can be implemented in your Laravel application.
First, let's examine the code for the ItemController class:
```php
public function displayItems() {
$itemsList = array('Alpha', 'Bravo', 'Charlie', 'Delta');
//$results are returned mysql row here
return view('items', ['rs' => $results, 'items' => $itemsList]);
}
```
In this snippet, you're passing the database table contents (as $results) and your items list (in $itemsList) to the Blade template with the names `rs` and `items`, respectively.
Next, let's look at the Blade view file (page.blade.php):
```php
@foreach ($items as $item)
//$item is used elsewhere too, so keep $item
{{$rs->{{$item}}.'_data')}
@endforeach
```
Here, you iterate through the items list using a foreach loop. Note that we're interpolating two variables in the inner part of the concatenated string: `$rs->{ {$item} }._data`. We use curly braces within each other to access the dynamic column name for the database table (`$rs->{$item}`) and add the '_data' suffix.
However, this approach requires you to manually iterate through the items array every time you need to display the data. A more efficient way would be fetching all the required information in a single query and passing it to the template as an associative array:
```php
public function displayItems() {
$itemsList = array('Alpha', 'Bravo', 'Charlie', 'Delta');
$dbInfo = Database::whereIn('name', $itemsList)->get()->toArray();
return view('items', ['data' => $dbInfo]);
}
```
This time, you directly query the database to retrieve all the necessary information using the items list. You then convert the query results to an associative array and pass it as `$data` in your Blade template. In the view template, you can simply iterate through this array:
```php
@foreach ($data as $itemData)
{{ $itemData['name'].'_data' }}
@endforeach
```
This method eliminates the need to concatenate strings dynamically.
In conclusion, achieving dynamic column names in your Laravel application can be achieved through various methods, depending on your specific requirements and coding style. The key is understanding how you can manipulate data with PHP and Blade templates to create flexible and maintainable code. By utilizing the right techniques and tools, you'll be able to create a seamless user experience for your web application and avoid potential bugs or performance issues due to hard-coded values.