CODEWITHSUNDEEP
iosswiftrealm
franswa
franswa

Reputation: 886

Sort a Realm list and persist the result

I have a Realm model that contains a list of products:

class StorageArea: Object {
    dynamic var name = ""
    let products = List<Product>()
}

How can I sort the products alphabetically and persist the result in Realm? I cannot find any mutable method on the List class to reorder the elements and persist the ordered result.

I have a TableViewController showing all the products. The user can move products in the tableView, quit the app and restart the app: the ordered list of products is persisted. I am using List.move(from, to) for that.

Now I would like to add an option to sort the products alphabetically or by date. What would you recommend to modify the products list and save it?

Upvotes: 2

Views: 2733

Answers (1)

marius
marius

Reputation: 7806

You can achieve that by retrieving first a sorted list of products, then remove all items from the list and re-add them all in the new order.

realm.write {
    let storageArea = …
    let sortedProducts = Array(storageArea.products.sorted("name"))
    storageArea.products.removeAll()
    storageArea.products.appendContentsOf(sortedProducts)
}

Upvotes: 6

Related Questions