[SOLVED] VL-WEB - using HTTPHEADER Variables

[RomainM]

Hi,

I use an authentification solution that set the user connected in a server HTTP HEADER variable, so I need that the VL-Web page can read this HTTP HEADER Variable.

For WAM, I can map a server HTTP HEADER variable to a field using the LANSAWEB administrator

and it works fine.

I have tried to retrieve the value of this variable with a server module, but it does not work !

How can I read an server HTTP HEADER Variable in a VL-Web page ?

Romain

[atostaine]

I think you use this PRIM_WEB.HttpHeaders. I couldn't find the example I had though.

http://docs.lansa.com/14/en/lansa016/PR ... eaders.htm

HTH

[RomainM]

Thanks for your answer,

I finally found how to use PRIM_WEB.HttpHeaders:

Code: Select all

Mthroutine Name(uRetrieveHeader)
Define_Com Class(#PRIM_WEB.HttpRequest) Name(#RequestWeb)

#RequestWeb.Url := #SYS_WEB.URL
#RequestWeb.ExecuteAsync

Evtroutine Handling(#RequestWeb.Completed)

For Each(#item) In(#RequestWeb.Response.Headers)
#STD_TEXT := #item.Key
#STD_TEXTL := #item.Value
Add_Entry To_List(#List1)
Endfor

Endroutine

Endroutine

But it needs to send a new request to the server, I would have preferred to retrieve this properties using a #COM_OWNER method!

Romain

[RomainM]

Hi,

In fact, it is different than I thought: the header variable is not sent to the browser, so I need to retrieve the HTTP HEADER Variable on the server in a server module (#PRIM_SRVM).

Any ideas?

Romain

[MarkD]

I am now not sure where you need to access the HTTP request header variables?
On the client in a VL-Web method or on the server in a WAM or Server Module?

[MarkD]

Also, if it on the server side ........ are you using, or intending to use, a WAM (WEBROUTINE based) or a Server Module (SRVROUTINE based)?

[MarkD]

If it is on the server - then I think you set up the header variables in the normal way as in first screen shot you pasted.
That should work for WEBROUTINEs and SRVROUTINEs.
In WEBROUTINEs you would then declare matching input WEB_MAPs,
In SRVROUTINEs you would declare matching FIELD_MAPs.

[RomainM]

Hi,

Thanks for your answer.

I want to build a new VLWeb application.
But the HTTP variable need to be retrieved on the server.


I have define an HTTP Variable using the Web Administrator:

WebAdmin.JPG (15.36 KiB) Viewed 22377 times

With the following code, a WAM works OK:

Code: Select all

Webroutine Name(test)
Web_Map For(*both) Fields(#RMCUSRAG)
Endroutine

I have test a VLWeb page with

Code: Select all

Begin_Com Role(*EXTENDS #PRIM_WEB)
Define_Com Class(#RMCUSRAG.Visual) Name(#RMCUSRAG) Componentversion(1) Displayposition(1) Height(21) Left(84) Marginleft(207) Parent(#COM_OWNER) Tabposition(1) Top(54) Usepicklist(False) Width(957)

Evtroutine Handling(#Com_owner.Initialize)

Define_Com Class(#RMCSMHEAD.RecupHeader) Name(#recupheader)

#recupheader.Execute Rmcusrag(#RMCUSRAG)

Endroutine

End_Com

And the Server Module is defined as:

Code: Select all

Begin_Com Role(*EXTENDS #PRIM_SRVM)

Srvroutine Name(RecupHeader)
Field_Map For(*output) Field(#RMCUSRAG)

Endroutine

End_Com

I have tried with Field_Map For(*both) Field(#RMCUSRAG), but it does not work either.

Did I miss something?

Romain

[MarkD]

Sorry but I don't know much about this area.
You restarted the web server after changing the config?
To me it looks like your test VL-Web page is not setting a HTTP header variable.
It's just passing a normal field parameter to the srvroutine, which goes as JSON in the HTTP request body.

[kelvinlee]

That should be Field_Map For(*Input) Field().
*Input means to get the value in.
That can also be *Both if you need the value in Server Module output.

Kelvin

[RomainM]

Many thanks Kelvin,

Your answer has helped me to find the solution:
in server module

Srvroutine Name(RecupHeader)
Field_Map For(*input) Field(#RMCUSRAG)
Field_Map For(*output) Field(#wwRMCUSRAG) name(HeaderValue)

define #wwRMCUSRAG reffld(#RMCUSRAG)

#wwRMCUSRAG := #RMCUSRAG
Endroutine

and in VLWeb pag :
#recupheader.Execute HeaderValue(#RMCUSRAG)

Romain

[kelvinlee]

This should be equivalent to Field_Map For(*Both).
My own test of this does work.
Kelvin