CODEWITHSUNDEEP
swiftswiftui
Tony Stark
Tony Stark

Reputation: 41

(Cannot assign to property: '_products' is a 'let' constant)

Model Class

struct Products: Identifiable {
        var id = UUID()
        var title:String
        var price:String
        var image:String
    }

I am trying to change the new value of my product price by button click it showing (Cannot assign to property: '_products' is a 'let' constant)

(Cannot assign to property: '_products' is a 'let' constant)

I am trying to change the new value of my product price by button click it showing (Cannot assign to property: '_products' is a 'let' constant)

Upvotes: 2

Views: 3255

Answers (2)

Tony Stark
Tony Stark

Reputation: 41

class Products: ObservableObject, Identifiable, Codable {
    var id = UUID()
     var title:String
     var price:String
     var image:String
    
    init(title: String, price: String, image: String){
        self.title = title
        self.price = price
        self.image = image
        
    }
    
}

Upvotes: 0

George
George

Reputation: 30371

You can use the new syntax where you can have a Binding in a ForEach, giving each element as a Binding. Link here to useful article about it.

This means code such as this (where item is a constant):

ForEach(items) { item in
    /* ... */
    /* item */
}

Can now be transformed to this (where $item is a Binding, and item can now be set):

ForEach($items) { $item in
    /* ... */
    /* item and $item */
}

Basically now, change your ForEach to this:

ForEach ($Topproducts) { $product in

And for every usage which was previously _products, replace it with product. You can now mutate the value.

Upvotes: 3

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