Swapping array values with Eloquent model IDs

I need to make an import method that takes the CSV file and imports everything in the database.

I've done the parsing with one of Laravel's CSV addons and it works perfectly giving me a big array of values set as:

[
    'col1_name' => 'col1 value',
    'col2_name' => 'col2 value',
    'col3_name' => 'col3 value,
    '...' => '...'
]

This is also perfect since all the column names fit my model which makes the database inserts a breeze.

However - a lot of column values are strings that i'd like to set as separate tables/relations. For example, one column contains the name of the item manufacturer, and i have the manufacturer table set in my database.

My question is - what's the easy way to go through the imported CSV and swap the strings with the corresponding ID from the relationship table, making it compatible with my database design?

Something that would make the imported line:

[       
    'manufacturer' => 'Dell',
]

into:

[       
    'manufacturer' => '32',
]

I know i could just do a foreach loop comparing the needed values with values from the relationship models but I'm sure there's an easier and more clean way of doing it.

via Chebli Mohamed