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How to perform a segue only if a condition is true


How to perform a segue only if a condition is true

By : Aastik Kaloti
Date : October 17 2020, 01:08 AM
it should still fix some issue Your reasoning is correct. Check the following points to make sure your code is working:
You have a segue from your button to your destination view controller. Your segue identifier is segue1 as in your code. Your isEmpty works when the UITextField is empty.
code :
override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {

    if identifier == "segue1" {
        if txtField.text?.isEmpty {
            let alertController = UIAlertController(
                title: "Alert", 
                message: "Input value", 
                preferredStyle: .alert
            )

            present(alertController, animated: true, completion: nil)
            return false
        }
    }

    return true 
}


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Is there a way to perform a branch of jQuery chaining only if a condition is true

Is there a way to perform a branch of jQuery chaining only if a condition is true


By : Muhammad Safdar
Date : March 29 2020, 07:55 AM
With these it helps I'm probably about a 7 or 8 on proficiency with jQuery (on a scale of 1-10), so I'm not sure if this even makes sense, but I'd like to know if anyone knows of a jQuery function or possibly a plugin which allows a branch of jQuery to only be executed if a given condition is true. Otherwise, I'd love to hear if someone thinks the concept is flawed in some way (EDIT and how it is flawed)
code :
$('.parent').hover(overFunction,offFunction)
    .find('.child-element')
    .click( booleanVar ? clickFunction1 :
            booleanVar2 ? clickFunction2 :
            clickFunction3 )
    .end()
    .find('.other-child')
    .css(SomePredefinedCssMapping)
Check validation and perform segue vs Should perform segue

Check validation and perform segue vs Should perform segue


By : Francisco Siqueira
Date : March 29 2020, 07:55 AM
To fix this issue In this case maybe the documentation for ShouldPerformSegue is slightly vague.
You normally want to override and use ShouldPerformSegue when you want to say abort a segue that is invoked via the Storyboard.
how to perform Condition check, before segue unwind

how to perform Condition check, before segue unwind


By : user3330954
Date : March 29 2020, 07:55 AM
Any of those help To achieve this, connect Controller of VC3 to its own exit and select the unwind action.
Give this exit-segue a segue.identifier "YOUR EXIT TEXT"
code :
@IBAction func accept(sender: AnyObject) {
    if //Condition X is true
        {performSegueWithIdentifier("YOUR EXIT TEXT", sender: self)}
    else {
        //Do this
        }
Perform User Authentication if condition is true

Perform User Authentication if condition is true


By : Marjorie Tench
Date : March 29 2020, 07:55 AM
Hope this helps I hope this helps
here i assume you have a "users" table with user data. your api username is same as the "users" table username field.
code :
public function login()
{
$password_api = VSE::user('password',$username);
$password     = Input::get('password'); 
if ( $password == $password_api ):
  if (Auth::attempt(['username' => $username, 'password' => $password])) {
  // Authentication passed...
  }
  else{
  // Authentication failed...
  }
endif;
}
public function login()
{
$password_api = VSE::user('password',$username);
$password     = Input::get('password'); 
if ( $password == $password_api ):
  Session::put('api_auth','1')
endif;
}
if(Session::get('api_auth')==1):
//logged in
endif;
<?php

namespace App\Http\Middleware;

use Closure;
use Session;

class apiAuth
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {

        if (Session::get('api_auth') == 1) {
            return $next($request);
        }

        if ($request->ajax()) {
            return response('Unauthorized.', 401);
        } else {
            //no authentication';
            return redirect()->route('login.page')->with('error','you need to login to view the page you requested');
        }
    }
}
How to perform different segue based on condition from a button click in swift?

How to perform different segue based on condition from a button click in swift?


By : Jeff Heine
Date : March 29 2020, 07:55 AM
like below fixes the issue I think, You are trying to connect the button to perform segue with multiple ViewController Right?? which is not possible
Instead that you have to connect segue between View Controllers
code :
@IBAction func NextViewController(_ sender: UIButton) {
            if launchedBefore  {
        /*Use the Identifier you given in story Board*/
               self.performSegue(withIdentifier: "otherVC", sender: self)

            } else {
    /*Use the Identifier you given in story Board*/
        self.performSegue(withIdentifier: "register", sender: self))
                UserDefaults.standard.set(true, forKey: "launchedBefore")
            }
        }
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