vapor 批量Field
时间: 2023-10-13 20:15:33 浏览: 137
vapor-ui:Laravel Vapor UI
如果您想对 Vapor 中的多个模型的字段进行批量处理,可以使用以下方法:
1. 创建一个协议,该协议具有要处理的字段的公共属性,例如:
```swift
protocol FieldProcessable {
var field1: String { get set }
var field2: Int { get set }
// add more fields as needed
}
```
2. 让您的模型符合此协议,例如:
```swift
final class Model1: FieldProcessable {
var field1: String
var field2: Int
// add more fields as needed
init(field1: String, field2: Int) {
self.field1 = field1
self.field2 = field2
// initialize other fields as needed
}
}
final class Model2: FieldProcessable {
var field1: String
var field2: Int
// add more fields as needed
init(field1: String, field2: Int) {
self.field1 = field1
self.field2 = field2
// initialize other fields as needed
}
}
// add more models as needed
```
3. 编写一个批处理函数,该函数接受一个 `FieldProcessable` 类型的数组和一个闭包作为参数,该闭包将对要处理的字段执行所需的操作,例如:
```swift
func processFields<T: FieldProcessable>(_ models: [T], process: (inout T) -> Void) {
for index in models.startIndex..<models.endIndex {
var model = models[index]
process(&model)
models[index] = model
}
}
```
4. 调用函数并传递要处理的模型数组和要执行的操作,例如:
```swift
let models = [Model1(field1: "foo", field2: 42), Model2(field1: "bar", field2: 69)]
processFields(models) { model in
model.field1 = "new value"
model.field2 += 10
// update other fields as needed
}
```
这将对所有模型的 `field1` 和 `field2` 进行更改。
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