C#•3mo ago

Login Message Help

i am gonna ask to asp.net developers. is everyone think it is convenient to use asp.net mvc.
how can i resolve the following situations in more tidy way. situation: when i want to go the page which requires to login without login then i will be redirected to login page, but in this case , the message such as "Please login" should be shown. how can i solve this

33 Replies

Angius•3mo ago

One of the scant few proper uses for a ViewBag IMO

Patrick•3mo ago

surely that's signified by the return url being populated as a query parameter

pycornOP•3mo ago

so you mean, I have to decide whether showing the message by query parameter url. and I have to show it by javascript?

Angius•3mo ago

Why Javascript? You can get query params perfectly fine in a controller or w/e

pycornOP•3mo ago

of course, i mean that i have to show the message by javascript code

Patrick•3mo ago

there is no javascript involved

pycornOP•3mo ago

the user already logined. but he then attempt the login page by typing url manually, what is the general good behavior in this case

Patrick•3mo ago

take them to wherever the login would usually redirect if there is no return

Angius•3mo ago

Or just redirect to index

pycornOP•3mo ago

Thank you very much But i think the mpa is somewhat uncomfortable. what about you?

Angius•3mo ago

You're making an SPA, then? So handle it all with JS Return an error message from the API and there, done

pycornOP•3mo ago

Thank you very much. I have been developing the frontend with react.when i am using the spa, all is comfortable. when i use the mpa. i have faced the following challenge. situation: the blog list is displayed. the user deleted one of it. the the blog list must be updated. but in this case , the success message should be displayed. should i resolve this situation by api and axios or ajax. or how can i resolve it with traditional mpa form submit method

Angius•3mo ago

Well, yeah, just submit the form What's challenging here, exactly?

pycornOP•3mo ago

i metioned that i wanted to show the success message such as "blog successfully deleted". but how can i show this message in mpa

Angius•3mo ago

After successful deletion redirect wherever and pass the success message Or a message ID Or some such Then pass it to the view with viewbag or w/e

pycornOP•3mo ago

then i should show that message in javascirpt

Angius•3mo ago

Why?

pycornOP•3mo ago

@section Scripts { <script> $(document).ready(function () { var successMessage = '@ViewBag.SuccessMessage'; if (successMessage) { toastr.success(successMessage); } }); </script> } this is my code . am i wrong

Angius•3mo ago

Well, if you want to use JS to show a toast or a popup or whatever, sure If you want to use JS to do something you need JS Yes

pycornOP•3mo ago

are there some other ways to show the messages

Angius•3mo ago

Just... render it?

public async Task<IActionResult> IndexOrWhatever([FromQuery]int? status)
{
    ViewBag["message"] = Messages[status];
    // ...
    return View(ungabunga);
}

public async Task<IActionResult> IndexOrWhatever([FromQuery]int? status)
{
    ViewBag["message"] = Messages[status];
    // ...
    return View(ungabunga);
}

<h1>@Model.Skunga</h1>
@if(ViewBag["message"] is string m)
{
    <div class="message">@m</div>
}

<h1>@Model.Skunga</h1>
@if(ViewBag["message"] is string m)
{
    <div class="message">@m</div>
}

pycornOP•3mo ago

oh, i got it. thank you very much\ could you give me some sample codes for me to catch the pattern

Angius•3mo ago

It's not any sort of a pattern? You just pass the data around Messages is some Dictionary<int, string> here for example That has [69] = "ayy yoo boss thingamajig has been yeeted yo" If status is 69 that's the message you get You stuff it into the viewbag Get it from the viewbag Show it

pycornOP•3mo ago

oh, thank you very much. so i can store Dictionary globally

Angius•3mo ago

Ideally, you'd have some service or w/e injected as a singleton But yeah, basically

pycornOP•3mo ago

oh, i learned about di and service.

Angius•3mo ago

There you go, then

pycornOP•3mo ago

i have some more. i put the back button on the page. how can i handle the back navigation , do you think

Angius•3mo ago

uh Just a link? Or just let the user use their browser They tend to have "back" buttons

pycornOP•3mo ago

Yes mabe link or button .I think i have some problems with using browser's history I manually put back button on my blog edit and detail page

Angius•3mo ago

Nothing is simpler than browser history? Pressing "back" takes you back 's it

pycornOP•3mo ago

I will do it. z*? what architecture do you like to use, when developing web applications using asp.net. could you tell me about your experience when i read the article about cqrs, the author recommended to use different orm to save and get. what do you think about this

Angius•3mo ago

For the API in particular I do use CQRS Kinda-sorta, since it's Immediate.Handlers For the SSR part, I just go with Razor Pages Everything just backed by EF Core, I see zero reason to use multiple ORMs

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Login Message Help