B4J Question [Web App] Get current URL

[ziovec]

In my webapp project I have different html pages.
I would like to know the current page the user is visiting (it could be the entire URL or even just the /page.html part), how can it be done? ?

 

[tchart]

Are the pages static or generated through handlers?

 

[ziovec]

Are the pages static or generated through handlers?

Static pages!

There are bits here and there written by the B4J code, but I guess it's not that relevant.

Oh, each page is connected to a different websocket. Maybe this is a valuable info ?

 

[tchart]

With static pages there is no way to know which page the user is on. If they are connecting to a unique websocket on each page then that is one way to know.

If you are using handlers you can use class name to determine what page they are on, I use this in my application.

'Handler class
Sub Class_Globals
    Dim ClassName As String
End Sub

Public Sub Initialize
    Dim jo As JavaObject = Me
    ClassName = jo.RunMethod("getClass",Null)
    ClassName = ClassName.SubString(ClassName.LastIndexOf(".")+1).ToLowerCase
End Sub

 

[tchart]

Actually just a thought, you could use a filter to determine which page they are requesting but it depends what you want you are trying to do - plus using static pages arent the best way to do anything dynamic as you lose a lot of control.

 

[ziovec]

With static pages there is no way to know which page the user is on. If they are connecting to a unique websocket on each page then that is one way to know.

If you are using handlers you can use class name to determine what page they are on, I use this in my application.

'Handler class
Sub Class_Globals
    Dim ClassName As String
End Sub

Public Sub Initialize
    Dim jo As JavaObject = Me
    ClassName = jo.RunMethod("getClass",Null)
    ClassName = ClassName.SubString(ClassName.LastIndexOf(".")+1).ToLowerCase
End Sub

Never used handlers, are there some documentation and/or example I can read about it?
Still learning most of the stuff out there

If I'm getting it right I should add to the project a new class module (Server Handler).
In your code, what's exactly ClassName? It should refer to the exact websocket class name?

 

[tchart]

Heres the tutorial;

[Server] Building web servers with B4J

Edit: Web Apps tutorial: http://www.b4x.com/android/forum/threads/webapp-web-apps-overview.39811/ The server implementation is based on a popular and powerful Java server library named Jetty (license) The database connection pooling implementation is based on c3p0 (license). B4J Server...

www.b4x.com

Basically instead of using a static page the server is writing the response. The response can be an HTML page.

 

[ziovec]

using static pages arent the best way to do anything dynamic as you lose a lot of control

Thanks for the tips, but I do not need that much dynamics.
Right now I'm just filling datatables trough sql queries, nothing that complicated.

I do usually design static pages with bootstrap studio, it's quick and effective.
In order to generate pages through handlers I'll need to study something else...I guess ABM could be the way? ?
Anyway, it's the next step

Heres the tutorial;

[Server] Building web servers with B4J

Edit: Web Apps tutorial: http://www.b4x.com/android/forum/threads/webapp-web-apps-overview.39811/ The server implementation is based on a popular and powerful Java server library named Jetty (license) The database connection pooling implementation is based on c3p0 (license). B4J Server...

www.b4x.com

Basically instead of using a static page the server is writing the response. The response can be an HTML page.

Thanks! I'll give it a deep look!

 

[tchart]

If I'm getting it right I should add to the project a new class module (Server Handler).
In your code, what's exactly ClassName? It should refer to the exact websocket class name?

Each handler is a class. So in the example I could have a class called "hello_world" which returns an HTML page with a "Hello World" message.

Have a read of the turotial, it will make sense.

 

[alwaysbusy]

I guess ABM could be the way

ABM is just an UI layer for a normal B4J Web Server. It uses normal B4J handlers, filters and especially Websockets. It is probably overkill for what you try to do. The tutorial linked above should suffice.