如何更好地構建這些數據？

Question

我有以下代碼：

class Book { 
    let title = "" 
    let description = "" 
    let ebookPath = "" 
    let featuredCategories = [FeaturedCategory]() 
    let authors = [Author]() 
    let publishers = [Publisher]() 
    //... 
} 

class FeaturedCategory { 
    let name = "" 
    let books = [Book]() 
} 

class Author { 
    let name = "" 
    let books = [Book]() 
} 

class Publisher { 
    let name = "" 
    let books = [Book]() 
} 


class Tag { 
    let name = "" 
    let books = [Book]() 
} 

正如你可以從上面的代碼中看到，有很多重複的。如果我使用相同的變量name和books添加更多類，這會變得更加難看。什麼是更好的選擇？

編輯：我正在從Firebase下載JSON。這裏的JSON結構：

...

Answer 1

嗯，這個問題可以在很多方面來回答，但我會盡力分享它我的意見。

首先嚐試使用struct而不是class，因爲通過這種方式，您在架構上更加靈活。

其次使用創建關係。

小例子：

//Struct insted of class 
struct Book { 
    //Usage of the let in struct is good practice. 
    let title: String 
    let description: String 
    let ebookPath: String 
    let featuredCategories: [FeaturedCategory] 
} 

//Base protocol 
protocol HasBooks { 
    var name: String { get } 
    var books: [Book] { get } 
} 

//Strcut that reuqires to implement name and books. 
struct FeaturedCategory : HasBooks { 
    var name = "" 
    var books = [Book]() 
}