Flutter, Laravel, Vue - Idea To Deployment - Part-18- Sign In page Validation

In this part we'll validate the Sign In Page, but, before that we'll try to separate our Login from the UI to have a clean structure of our code.
Hopefully the state rebuilder package provides a clean way to handle this situation.

Link to the source code:

[enasbitadil]

This is the best Flutter, Laravel tutorial in Youtube
Thanks for existing, keep up!

[gilmcglory]

This tutorial is truly fantastic, so please keep up the great work. Thanks so much.

[rizi]

this is pure gold content, thank you so much is all i can say.


i just started learning flutter and this time i m learning it a way that i improve my programming skills by understanding state managemenet, dependency injections, singletons e.t.c i have experience in web apps but never dive into advanced stuff. in that capacity i have some questions i want to ask.

1. is it fair to say sign_in_form_model.dart is your viewmodel and what u did in sign_in_page.dart is viewmodel binding ?
2. what the real definition of dependency injection and state management w.r.t to what u coded until. like when u pass signInFormModel in SignInFormModel StateBuilder and its child widget can access to it. is this dependency injection ? and what u are doing via setEmail is state management ? or together the UI binding and setEmail makes state-management solution.
3. when u use two StateBuilder in login form one for email and other for password, is it talking to same instance. what i mean is can setPassword in sign_in_form_model.dart access what we pass via setEmail ? if no we are making this view more bulky by creating more instances.


another suggestion is i am struggling with services as well i hope you will be able to show a clean way to inject them, and i hope u include server side error too

[rizi]

missing your video, i hope u will get back soon with this series

[midnitebinarytrader]

this is really great tutorial, so i have a question i have used the same validation as yours in sign_in_model MaterialButton i don't understand it works fine for the first time but in the second time even when the fields are null they don't show the error snackbar

[saleemmirza]

Haven't seen any video since 4 days. Missing those quality stuff

[johneduardbongolan]

Fantastic tutorial. but i have a question, why i'm having an error in StateBuilder ? It says that The named parameter 'models' isnt defined. Thanks man.

[hesamnikkhah]

Hi I have a error in this project and it is : Unhandled Exception: Instance of 'LoginError' it seems error handling not worked for me!!! what's the problem?! thank you for this amazing tutorial!

[محمد-رحل]

Salam Alaikum brother,
I think Are you from Afghanistan?

[MrSmekalkin]

new version states_rebuilder:
Your costume error/exception classes must implement `Exception` not `Error`.
and:
StateBuilder(
observe : ()=> RM.get<SignInFormModel>(),
shouldRebuild: (signInFormModel) => true,