Mastering JSON Queries in Laravel: How to Filter Data in Your JSON Columns

As developers working with modern databases and frameworks like Laravel, dealing with semi-structured data stored in JSON columns is increasingly common. When you store complex arrays or objects within a single JSON field, querying those nested values can become surprisingly tricky.

This post addresses a very specific pain point: how to efficiently query an array of objects stored inside a json column in a Laravel application, especially when dealing with older versions like Laravel 5.6. We will dissect why your initial attempt failed and provide robust solutions using the power of raw SQL within Eloquent.

The Challenge: Querying Nested JSON Data

You are attempting to filter records based on a value nested deep within a JSON array column. Your data structure looks something like this:

[
  {"code": "1", "club": "CHE", "country": "ENGLAND"}, 
  {"code": "2", "club": "BAY", "country": "GERMANY"}, 
  // ... more records
]

You want to find all records where the club field within this JSON structure equals "CHE".

Your attempt:

where('desc->club', '=', 'CHE')->get();

This fails because standard Eloquent relationship syntax (->) only works when you have defined a proper Eloquent relationship mapping to another table. When dealing with a raw JSON column, Laravel's ORM doesn't inherently understand how to traverse the nested structure within the stored string/JSON blob unless explicitly told how to interpret it via the database engine itself.

The Solution: Leveraging MySQL JSON Functions with whereRaw

Since you are interacting directly with the underlying data format (JSON), the most powerful and efficient way to perform complex filtering is to delegate the operation directly to the database using its native JSON functions. For MySQL, this means utilizing functions like JSON_CONTAINS or JSON_EXTRACT.

We will use the whereRaw method on your Eloquent query to inject the necessary SQL logic.

Step 1: Ensure Proper Column Type and Setup

First, ensure your database column is correctly defined as a JSON type (like JSON in MySQL). If you are using Laravel 5.6, this setup relies heavily on how your migration was written.

Step 2: Writing the Query with whereRaw

To check if any element within the JSON array contains a specific key-value pair, we need to use JSON_CONTAINS. This function checks if a specified value exists within a JSON document.

Here is how you would structure the query to find records where at least one object in the desc JSON array has "club": "CHE":

use Illuminate\Support\Facades\DB;

// Assuming $model is your Eloquent model and $query is your base query builder
$targetClub = 'CHE';

$results = $model::whereRaw("JSON_CONTAINS(desc, '{\"club\":\"{$targetClub}\"}')")
              ->get();

// If you needed to check for a specific nested value directly:
// For example, finding records where any entry has code '1'
/*
$results = $model::