How to translate custom values for all indexes of array based form input fields for validation in Laravel - laravel

Question

Take this array based form input fields that allows user to add and remove items with type (simple or complex) and complex infos:
<div class="item">
<div>
<h2>Type</h2>
<label><input type="radio" name="data[0][type]" value="simple"> Simple ABC stuff</label>
<label><input type="radio" name="data[0][type]" value="complex"> Complex XYZ stuff</label>
</div>
<div class="complex"> <!-- it will be visible only when type is "Complex XYZ stuff" -->
<h2>Complex info</h2>
<input type="text" name="data[0][complex_info]"/>
</div>
<button class="remove">Remove item</button>
</div>
<div class="item">
<div>
<h2>Type</h2>
<label><input type="radio" name="data[1][type]" value="simple"> Simple ABC stuff</label>
<label><input type="radio" name="data[1][type]" value="complex"> Complex XYZ stuff</label>
</div>
<div class="complex"> <!-- it will be visible only when type is "Complex XYZ stuff" -->
<h2>Complex info</h2>
<input type="text" name="data[1][complex_info]"/>
</div>
<button class="remove">Remove item</button>
</div>
<button class="add">Add item</button>
When user selects the "Complex XYZ stuff" type, then "Complex info" input should be required. So we set this form request rule in Laravel 6.x:
public function rules() {
return ['data.*.complex_info' => 'required_if:data.*.type,complex'];
}
When the required_if validation rule fails, we get the error message The :attribute field is required when :other is :value. that with the filled parameters should result in a message like this: The Complex info field is required when Type is Complex XYZ stuff. (expected message).
The following validation.php language file would work for a form of 2 items:
return [
/* ... */
'values' => [
'data' => [
0 => [
'type' => [
'simple' => 'Simple ABC stuff',
'complex' => 'Complex XYZ stuff',
]
],
1 => [
'type' => [
'simple' => 'Simple ABC stuff',
'complex' => 'Complex XYZ stuff',
]
],
]
]
];
And I need it to work for a form with an indefinite number of items (all indexes), so I thought about using the * wildcard like:
return [
/* ... */
'values' => [
'data' => [
'*' => [
'type' => [
'simple' => 'Simple ABC stuff',
'complex' => 'Complex XYZ stuff',
]
],
]
]
];
But it doesn't work, the :value parameter of the required_if validation rule's error message is not properly translated: The Complex info field is required when Type is complex. (actual message).