Pass parameter before portlet render

[cyril arrighi, geändert vor 12 Jahren.]

Hello,
I'm wondering how to pass parameter to a portlet ?
I have a combobox in my view.jsp that lists the persons, but before rendering my view (for the first time) i'd like to retrieve all the persons from the database and pass the array as an init parameter but i don't know how to do that.
Thanks

[Krishna Melkote, geändert vor 12 Jahren.]

Looking at what you are trying to do .. it should be fairly straightforward..
You should just be able to set the "Persons" in the request as an attribute or on the model (if you are using Spring etc)

                 doView(RenderRequest request, RenderResponse response) {
                          // Check if it is an initial request by means of a commandType or something like that in request parameters
                          if(initialRequest){
                                    // Do your jdbc stuff and retrieve Persons from the database
                                    
                                    // set the persons in the request, this will be available in the view you are trying to render by doing a request.getAttribute("persons")
                                    request.setAttribute("persons", persons);

                           }
                  }

[cyril arrighi, geändert vor 12 Jahren.]

Hi,
Sorry i forgot to mention that i'm using MVC portlet, so i suppose that i've to use the doView method ?
And so, what is the condition i've to use,

if(initialRequest)

?
Thanks

[cyril arrighi, geändert vor 12 Jahren.]

nobody ?

[prashant deshpande, geändert vor 12 Jahren.]

Hi Cyril,

Here before calling your view.jsp,
doView(RenderRequest renderRequest, RenderResponse renderResponse) method is called very first (Weather its MVC, Spring etc).
So you can write your logic of fetching list of person from Database and setting it in request. So in view.jsp you can get as request attribute.
Please let me know in case of any confusion.

[Sagar A Vyas, geändert vor 12 Jahren.]

cyril arrighi:

Hello,
I'm wondering how to pass parameter to a portlet ?
I have a combobox in my view.jsp that lists the persons, but before rendering my view (for the first time) i'd like to retrieve all the persons from the database and pass the array as an init parameter but i don't know how to do that.
Thanks

Hi Cyril,

Following is flow of MVC portlet (In you case)

Portlet.xml >> Controller Class (Which has extended MVCPortlet ) >> it will call doVIew() Method of MVCPortlet >> view.jsp

Now here there in no place where you can set some renderParameter which you can retrieve in jsp and display,

Solution :

Just override method doView() in your controller class. >> get those data from service layer >> set an attributes and retrieve it at jsp side

This will solve your problem

Thanks,
Sagar Vyas

[cyril arrighi, geändert vor 12 Jahren.]

Hello,
It works, thanks