Unique validation with 2 columns - Laravel 8.x - php

Question

I've been trying make my validation so that an extension must be unique to it's own company but not to other companies. Here is my DB table:
$table->id();
$table->foreignId('user_id')->constrained();
$table->foreignId('account_id')->constrained()->onDelete('cascade');
$table->string('first_name')->nullable();
$table->string('last_name')->nullable();
$table->string('email');
$table->string('extension');
$table->string('password')->nullable();
$table->string('user_type')->default('user');
$table->timestamps();
$table->unique(['extension', 'account_id'], 'unique_extension');
And my validation rule looks like this:
public function rules()
{
return [
'editExtension.first_name' => 'required|max:255',
'editExtension.last_name' => 'required|max:255|',
'editExtension.email' => ['required', 'email','max:255', Rule::unique('account_users', 'email')->ignore($this->editExtension->id)],
'editExtension.extension' => ['required', 'numeric', Rule::unique('account_users', 'extension', $this->client_id)->ignore($this->editExtension->id)],
'editExtension.password' => 'required|max:255',
'editExtension.user_type' => 'required|in:user,admin',
];
}
But still I got errors saying that the extension number is already taken.
It seems that the Unique rule doesn't accept multiple columns, only one. Is this true?
How can I fix this?

Answer 1

Forcing A Unique Rule To Ignore A Given ID:
UPDATING AN EXISTING RECORD.
"account_users" => Table name.
"account_id", "extension" => The 2 fields to check for uniqueness.
ID of currently edited row here. => The id (primary key) to ignore. (The currently updated/edited table row id.)
Rule::unique("account_users")->where(
function ($query) use ($request) {
return $query->where(
[
["account_id", "=", $request->account_id],
["extension", "=", $request->extension]
]
);
})->ignore(/* ID of currently edited row here. */)
CREATING A NEW RECORD.
Rule::unique("account_users")->where(
function ($query) use ($request) {
return $query->where(
[
["account_id", "=", $request->account_id],
["extension", "=", $request->extension]
]
);
})
Addendum
By default, the unique rule will check the uniqueness of the column
matching the name of the attribute being validated. However, you may
pass a different column name as the second argument to the unique
method:
Rule::unique("account_users", "extension")->where(...)