在使用 Alamofire 发送 POST 请求时,我需要创建自定义正文的帮助。
我正在发送至 API 产品。有两种类型的产品。第一种类型只有数量,第二种类型 - 不同的数量 (size_id
) 以及与每个 size_id
匹配的数量。
最终正文应如下所示:
"factory_id": "1"
"order_products[0][product_id]": "1"
"order_products[0][size_id]": "2"
"order_products[0][quantity]": "10"
"order_products[1][product_id]": "1"
"order_products[1][size_id]": "3"
"order_products[1][quantity]": "10"
"order_products[1][product_id]": "2"
"order_products[1][size_id]": "2"
"order_products[1][quantity]": "10"
"order_products[2][product_id]": "3"
"order_products[2][quantity]": "10"
这是我迄今为止所取得的成就:
var createOrderBody = [String: Any]()
let productIds = ["1", "2", "3"]
var body = [String: Any]()
var quantity = ["1" : "10", "2": "10"]
var noIdQuantity = ["10"]
var finalBody = [String: Any]()
func formBody(products: String, factoryId: String, productId: String, size_id: String, quantity: String) -> [String: Any] {
createOrderBody["factory_id"] = factoryId
createOrderBody["order_products[\(products)][product_id]"] = productId
createOrderBody["order_products[\(products)][size_id]"] = size_id
createOrderBody["order_products[\(products)][quantity]"] = quantity
return createOrderBody
}
for (index, value) in productIds.enumerated() {
for (id, size) in quantity {
print(id)
print(size)
body = formBody(products: String(index), factoryId: "1", productId: String(value), size_id: id, quantity: size)
print("Body quantity - ", body)
}
}
我得到的结果是:
"factory_id": "1",
"order_products[0][product_id]": "1"
"order_products[0][size_id]": "2",
"order_products[0][quantity]": "10",
"order_products[1][product_id]": "2",
"order_products[1][size_id]": "2",
"order_products[1][quantity]": "10",
"order_products[2][product_id]": "3",
"order_products[2][size_id]": "2",
"order_products[2][quantity]": "10",
正如你所看到的,我几乎达到了预期的结果,但问题是它只添加了 quantity
字典的最后一个元素并省略了其他值。另外,我不知道如何为没有 size_id
另外,我知道将 for in
循环放在其他 for in
循环中并不是一个好的做法,但我是开发新手,这是最好的做法我想到的想法。
非常感谢您对这个问题的任何帮助,因为我已经与这个问题斗争了将近一周了。
非常感谢,祝周末愉快!
最佳答案
经过在网上学习和搜索,这里有一个解决方案来解决我们这里的问题。作为引用,原始帖子在这里 - Original Post
假设每个产品都必须拥有自己的数量:
我们可以定义这样的结构:
struct Product {
let id: String
let quantities: [(sizeId: String, quantity: Int)]?
let noIdQuantity: Int?
init(id: String, quantities: [(sizeId: String, quantity: Int)]) {
self.id = id
self.quantities = quantities
self.noIdQuantity = nil
}
init(id: String, quantity: Int) {
self.id = id
self.quantities = nil
self.noIdQuantity = quantity
}
}
通过上面的结构,我们只需要一个输入变量和一个输出变量:
// Define input `product with id` as an Array of `Product`
let products = [
Product(id: "1", quantities: [("1", 10), ("2", 10)]),
Product(id: "2", quantities: [("1", 10), ("2", 10)]),
Product(id: "3", quantities: [("1", 15), ("2", 20)]),
Product(id: "4", quantity: 10),
]
// Output dictionary
var body = [String: Any]()
要将单个产品的条目放入字典中:
extension Product {
func formBody(_ index: inout Int, into body: inout [String: Any]) {
if let quantities = self.quantities {
for (sizeId, quantity) in quantities {
body["order_products[\(index)][product_id]"] = self.id
body["order_products[\(index)][size_id]"] = sizeId
body["order_products[\(index)][quantity]"] = quantity
index += 1
}
}
if let quantity = self.noIdQuantity {
body["order_products[\(index)][product_id]"] = self.id
body["order_products[\(index)][quantity]"] = quantity
index += 1
}
}
}
并按如下方式使用它们:
var index = 0
body["factory_id"] = "1"
for product in products {
product.formBody(&index, into: &body)
}
print("Body quantity - ", body)
body.sorted {$0.key < $1.key}.forEach{print("\($0.key)=\($0.value)")} //For showing readable result, not for Alammofire body
所以,最终的结果是:
factory_id=1
order_products[0][product_id]=1
order_products[0][quantity]=10
order_products[0][size_id]=1
order_products[1][product_id]=1
order_products[1][quantity]=10
order_products[1][size_id]=2
order_products[2][product_id]=2
order_products[2][quantity]=10
order_products[2][size_id]=1
order_products[3][product_id]=2
order_products[3][quantity]=10
order_products[3][size_id]=2
order_products[4][product_id]=3
order_products[4][quantity]=15
order_products[4][size_id]=1
order_products[5][product_id]=3
order_products[5][quantity]=20
order_products[5][size_id]=2
order_products[6][product_id]=4
order_products[6][quantity]=10
希望这对具有相同复杂结构或类似结构的人有所帮助。
关于arrays - 为 Alamofire POST 请求 Swift 4 创建主体,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52780085/