How to store and retrieve nested JSON array in laravel 6 - mysql

Question

I am trying to retrieve the data saved as json in mysql. My migration looks like below:
Schema::create('items', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('name')->nullable();
$table->json('add_ons')->nullable();
$table->timestamps();
});
I have tried saving the below JSON from postman and it saved perfectly.
{
"itemName": "chicken",
"addons": {
"required": false,
"min": 2,
"max": 3,
"data": [
{
"name": "sauces",
"type": [
{
"name": "white sauce",
"type": [
{
"name": "whiteOne",
"price": 10
},
{
"name": "whiteTwo",
"price": 20
}
]
},
{
"name": "red sauce",
"price": 10
}
]
}
]
}
}
Now, I trying to retrieve the price of 'whiteOne' under 'white sauce' and getting nothing other than null or laravel error response.
I have tried
Item::whereJsonContains('add_ons->data->name','sauces')->get()
Item::whereJsonContains('add_ons->data->name','sauces')->find(16)
After saving the 'add_ons' column has below data:
{
"required": false,
"min": 2,
"max": 3,
"data": [
{
"name": "sauces",
"type": [
{
"name": "white sauce",
"type": [
{
"name": "whiteOne",
"price": 10
},
{
"name": "whiteTwo",
"price": 20
}
]
},
{
"name": "red sauce",
"price": 10
}
]
}
]
}
Can anyone help me ?

Answer 1

I used this function to get the value of the index.
public function search($array, $key, $value) {
// RecursiveArrayIterator to traverse an
// unknown amount of sub arrays within
// the outer array.
$arrIt = new \RecursiveArrayIterator($array);
// RecursiveIteratorIterator used to iterate
// through recursive iterators
$it = new \RecursiveIteratorIterator($arrIt);
foreach ($it as $sub) {
// Current active sub iterator
$subArray = $it->getSubIterator();
if ($subArray[$key] === $value) {
//$result[] = iterator_to_array($subArray);
$result = iterator_to_array($subArray);
}
}
return $result;
}
Now when I pass the values in the function I get the appropriate values.
$item = Item::where('id','=',16)->first();
$res = $this->search($item->add_ons['data'], 'name', 'whiteTwo');
echo $res["name"]." - ".$res['price'] ."<br>";