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如何在RAC命令或按鈕單擊後驗證表單?我有這樣的地方在我的視圖模型活性可可驗證
self.executeLoginRacCommand = RACCommand(enabled: activateButtonSignal, signalBlock: { (any : AnyObject!) -> RACSignal! in
return self.executeLoginAPI()
})
//My question is here, how can I display an alert to my view controller saying may email is invalid.
//MARK: - Execute Login API
private func executeLoginAPI() -> RACSignal {
if self.isEmailValid(self.email) {
return self.signInServices.signInAPIService.signInAPISignal(self.email, password: self.password)
} else {
self.errorMessage = "Please insert a valid email"
return RACSignal.empty()
}
}
//MARK: - Is Email Valid
func isEmailValid(email: String) -> Bool {
let emailRegEx = "^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-][email protected][a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
return emailTest.evaluateWithObject(email)
}
我訪問它在我的視圖控制器是這樣的:
self.signInButton.rac_command = self.signInViewModel.executeLoginRacCommand
能否請您提出一個按鈕後,確認無效的電子郵件和顯示警報的好方法點擊?提前致謝!
您是否爲自己運行「驗證電子郵件」搜索? –
是的,我已經GOOGLE了很多,找不到答案。我試圖改變我的代碼。不幸的是它不起作用。 –