Calling Component controller method in webdynpro

Hi All,
Is it possible to call a method from component controller to view controller?
Regards,
Sasikala

yes it is possible.
hope this would help you
http://help.sap.com/saphelp_nw70/helpdata/en/3b/29933f09a5fb47e10000000a114084/content.htm
Regards,
nag

Similar Messages

Call component controller method from view

Hi
I have created an action in view Thus its event handler is "OnActionDoSomething()"
And, I have a method in component controller "MethodSaySomething()".
Now, how can I call MethodSaySomething() from OnActionDoSomething().
OnActionDoSomething()
// Call MethodSaySomething() defined in component controller
Thanks

Hi,
To access the methods present in component controller from View , first u need to add the component controller as the required controller.
open the view controller --> switch to propertues tab --> add the component controller as required controller(click add controller).
Now in your action handler , write this below code to add the method:
wdThis.wdGet<COmponent Controller>().MethodSaySomething();
Hope it helps
Thanks and Regards,

How to call Custom or Component Controller methods from View Controller

Hy Guys,
how do I call Custom Controller or Component controller methods from a View or Context Controlller?
thanks in advance
Jürgen

Hi Juergen
Yes it is possible, pls follow the below approach to access the component controller in context node class
1) since the standard component controller class is protect variable , declare a variable of type component controller in your controller class.
say for example the public variable you declared is g_comp_controller
2) now redefine the controller class method WD_CREATE_CONTEXT and add the below lines of code
   g_comp_controller ?= me->comp_controller.
3) go to context node class (CNXX) there declare the varaible which of type controller class (IMPL) as public variable, for example g_owner
4) redefine the method IF_BSP_MODEL~INIT and write the below code
     CALL METHOD super->if_bsp_model~init
    EXPORTING
      id    = id
      owner = owner.
g_owner ?= owner.
5) now the variable   g_owner that is declared in (CNXX)   contains reference to your controller class
6) in on_new_focus method access your component controller in the below manner and access the entities also.
DATA: lv_owner                    TYPE REF TO xxxxx_impl, " Implementation class
             lr_comp_cont                TYPE REF TO xxxx_bspwdcomponen_impl, " component controller class
             lv_entity type ref to cl_crm_bol_entity.
lv_owner ?= g_owner.
lr_comp_cont    ?= lv_owner->g_comp_controller.
IF lr_comp_cont IS BOUND.
   lv_entity ?= lr_comp_cont->typed_context->mdfcampaign->collection_wrapper->get_current( ).
now lv_entity contains the value of component controller context node.
Thanks & Regards
Raj
Edited by: bmsraj on Sep 27, 2011 3:28 PM

Calling component controller's method

Hi,
How can i call component controller's method from a view?
Thanks.

Yes, You can call method of component controller from View.
If you have already mapped any context node/attribute between your view and component controller then it means component controller is already added in your view. If you have not done same then you can add component controller by going into the properties of view.
To access the method use following code.
wdThis.wdGet<Your_controllername>Controller().<methodName>();
Regards,
Rohit

Calling view controller method from component controller method

Hi,
Is there any way to call view controller method from component controller method?
Thanks,

Hi Khandal.
You should not make you component controller dependent from a view controller.
But what you can do is to define an event in the component controller. The view
controller can register for this event.
In the stage where you currently want to call the view controller method just fire
the event. In the event handler method in the view controller you can call the
method then.
Why do you need to call a view controller method? Can you give more details
about the scenario?
Cheers,
Sascha

How to call jpf controller method from javascript

Can any one help me how to call pageflow controller method from JavaScript.\
Thanks.

Accessing a particular pageflow method from Javascript is directly not possible unless we do some real funky coding in specifying document.myForm.action = xyz...Heres what I tried and it did not work as expected: I found another workaround that I will share with you.
1. In my jsp file when I click a button a call a JavaScript that calls the method that I want in pageflow like this: My method got invoked BUT when that method forwards the jsp, it lost the portal context. I saw my returned jsp only on the browser instead of seeing it inside the portlet on the page of a portal. I just see contents of jsp on full browser screen. I checked the url. This does make the sense. I do not see the url where I will have like test1.portal?_pageLabe=xxx&portlet details etc etc. So this bottom approach will notwork.
document.getElementById("batchForm").action = "/portlets/com/hid/iod/Batches/holdBatch"; // here if you give like test1.portal/pagelable value like complete url...it may work...but not suggested/recommended....
document.getElementById("batchForm").submit;
2. I achieved my requirement using a hidden variable inside my netui:form tag in the jsp. Say for example, I have 3 buttons and all of them should call their own action methods like create, update, delete on pageflow side. But I want these to be called through javascript say for example to do some validation. (I have diff usecase though). So I created a hidden field like ACTION_NAME. I have 3 javascript functions create(), update() etc. These javascripts are called onclick() for these buttons. In thse functions first I set unique value to this hiddent field appropriately. Then submit the form. Note that all 3 buttons now go to same common action in the JPF. The code is like this.
document.getElementById("ACTION_NAME").value = "UPDATE";
document.getElementById("batchForm").submit.
Inside the pageflow common method, I retriev this hidden field value and based on its value, I call one of the above 3 methods in pageflow. This works for me. There may be better solution.
3. Another usecase that I want to share and may be help others also. Most of the time very common usecase is, when we select a item in a drop bos or netui:select, we want to invoke the pageflow action. Say we have 2 dropdown boxes with States and Cities. Anytime States select box is changed, it should go back to server and get new list of Cities for that state. (We can get both states and cities and do all string tokenizer on jsp itself. But inreality as per business needs, we do have to go to server to get dynamic values. Here is the code snippet that I use and it works for all my select boxes onChange event.
This entire lines of code should do what we want.
<netui:anchor action="selectArticleChanged" formSubmit="true" tagId="selectPropertyAction"/>
<netui:select onChange="document.getElementById(lookupIdByTagId('selectPropertyAction',this )).onclick();" dataSource="pageFlow.selectedArticleId" >
<c:forEach items="${requestScope.ALL_ARTICLE}" var="eachArticle">
<%-- workshop:varType="com.hid.iod.forms.IoDProfileArticleRelForm" --%>
<netui:selectOption value="${eachArticle.articleIdAsString}">${eachArticle.articleItemName}</netui:selectOption>
</c:forEach>
</netui:select>
See if you can build along those above lines of code. Any other simpler approches are highly welcome.
Thanks
Ravi Jegga

Calling main controller method from component view

Hi,
Because i want to re-use certain views, i've created components of em so i can re-use them in several places within the same view. The problem is that i have 1 main component which has several methods calling webservices. I want the other components to be able to call the methods of the maincomponent. I tried adding the main component to the Used Web Dynpro Components of another component. Then i added the main component in the properties of the view but then it says: Cycle in component usage definitions.
I can understand this because the main view creates instances of all other components, so the sub components cannot create the maincomponent again...but how do i then give a reference of the maincomponents controller to the sub components?
Much thanks,
Hugo Hendriks

Hi Siarhei,
The problem of creating a Java class is that there i dont have access to certain classes for example when there is something with a webservice, i want to send a message back like
IWDMessageManager msgMgr = wdComponentAPI.getMessageManager();
msgMgr.reportSuccess(message);
In a seperate java class, i dont have access to the wdComponentAPI! The only thing i want is kinda like a ServiceLocator to call different webservices. I do check roles of the user logged in the portal and stuff like that....How do you normally implement something like this? I have several views which have to make use of the locator....
I hope i dont need to create a seperate DC when i want to re-use a screen and want to call a service method of another class or so.........Sounds like much overkill for a screen with 2 inputfields and a button!
Anoop, i tried adding the mainController to the searchComponent by adding it to Used WebDynpro Components and then I added the mainController in the properties of the searchView so i can make use of it. In the searchcode i now can use the maincontroller but i still get the compiling message: Cycle in component usage definition!
best regards,
Hugo

WD ABAP: call dialog window from component controller method

Hi all,
I need to call a dialog box from a method in the component controller. It would be helpful if u could post the code too.
Thanks,
Sravanthi

Hi Maksim,
this is the code i wrote:
DATA: api_component TYPE REF TO if_wd_component,
      window_manager TYPE REF TO if_wd_window_manager.
api_component = wd_this->wd_get_api( ).
window_manager = api_component->get_window_manager( ).
wd_this->window = window_manager->create_window(
           window_name = 'OPTIONWD'
           close_button = abap_false ).
wd_this->window->open( ).
When i test it, this is the error i get.
"An Instance of the View OPTIONWD Already Exists in the Component"
how do i correct it?
Thanks,
Sravanthi

Call a component controller methods from a view

Hi,
I have created a view v1 with context node c1and binded the context node c1 of it with the component controller so that the values entered in the view v1 are available.
now can i know how to access this values from component controller context node which i binded in a other view......
Thanks,
Prem

Hi Sayan,
component : BP_HEAD
View: BP_HEAD/BPHeadOverview
I have called event EH_ONPOPUP_CLOSED when popup is closed in view BP_HEAD/BPHeadOverview and i get all the values entered in the popup here using below code.
       lr_context_node = gr_popup->get_context_node( iv_cnode_name = 'ZPOPUPCN' ).
       lr_col_wrapper = lr_context_node->collection_wrapper.
       lr_entity = lr_col_wrapper->get_current( ).
       IF lr_entity IS BOUND.
         lr_entity->get_properties( IMPORTING es_attributes = ls_data ).
       ENDIF.
now ls_data contains all the data entered in the popup ie. - firstname, lastname, house_no, street, city, postal code, country.....
now it have tried the below code to map/set the entries with the Account management - individual account creation screen.
data : ls_header         TYPE crmst_header_object_buil,        " BuilHeader
          ls_header1        TYPE crmst_address_buil,                 " BuilStandardAddress
       ls_header-firstname     = ls_data-zfirstname.
       ls_header-lastname      = ls_data-zlastname.
       ls_header1-house_no     = ls_data-zhouseno.
       ls_header1-street       = ls_data-zstreet.
       ls_header1-city         = ls_data-zcity.
       ls_header1-postl_cod1   = ls_data-zpostcode.
       ls_header1-country      = ls_data-zcountry.
       ls_header1-telephonetel = ls_data-ztelno.
       ls_header1-e_mailsmt    = ls_data-zemail.
       entity ?= me->typed_context->builheader->collection_wrapper->get_current( ).
       IF entity IS BOUND.
         entity->set_properties( EXPORTING is_attributes = ls_header ).
       ENDIF.
       entity1 ?= me->typed_context-> BuilStandardAddress->collection_wrapper->get_current( ).
       IF entity IS BOUND.
         entity1->set_properties( EXPORTING is_attributes = ls_header1 ).
       ENDIF.
but the problem is both the entity is INITIAL.

Calling custom Infotype method from Webdynpro Abap

Hi Experts,
I am working on an application where i need to call a method of a custom defined infotype.
I have done this -->
1. Create a custom infotype 9111
2. SAP creates a class of that infotype ZCL_HRPA_INFOTYPE_9111
3. Inside this method there are few inherited method which provide me functionality of insert , update , delete
i want to call methods IF_HRPA_INFTY_BL~MODIFY,
IF_HRPA_INFTY_BL~INSERT
However when i call these method from webdynpro abap this method does not work.
where as when i try to insert an entry using PA30 transaction it works.
Does anyone know why does this happen and what is the solution?
Regards,
Ashish Shah

Hi Ashish,
You need to create method inside your assistance class, the class your webdynpro component talks to.
Within the methods of Assistance class you will have to create instance of ZCL_HRPA_INFOTYPE_9111 and call its method IF_HRPA_INFTY_BL~INSERT passing the data.
Cheers
Prashant

How to call view-controller method out of componentcontroller

Hello all,
my component implements a component-interface with method BACK.
Thus my componentcontroller has the interface Method BACK.
When triggering BACK from an foreign component, the implementation within the componentcontroller is called. So far so good.
Now I want to POPUP_AND_CONFIRM when BACK is hit. But this POPUP_TO_CONFIRM requires me to create an action. But I can't create an action within the componentcontroller.
I could realize the POPUP_AND_CONFIRM within the components view. But how can I call a view-method out of the componentcontroller?
Or does anybody have a better solution? (Maybe I could implement BACK within the view, but how to connect the componentcontroller-back-method with the views back-method?)
Thank you very much in advance...
Regards
I. Durmaz

You should never attempt to call view methods from outside the view. It is possible to register popop event handlers to methods of the component or custom controllers. From the online help:
For a few special cases it is useful to register event handlers for component controllers or custom controllers on the button events of a dialog box. For these cases, a special POPUP_TO_CONFIRM attribute of type IF_WD_POPUP_TO_CONFIRM_N has been implemented in the IF_WD_WINDOW interface. This interface provides precisely the methods with which event handlers for component and custom controllers can be registered on events of the dialog box.
http://help.sap.com/saphelp_nw70ehp2/helpdata/en/47/b9487e01602fe2e10000000a42189d/frameset.htm

Web dynpro dc compoent controller method call from Java dc class file

Hi All,
Is it possible to call a wd java component controller method from a java dc class file?
I have declared wd java dc as used dc in java dc.Any poiters for the same would be really helpful.
Thanks in Advance.
regards
Radhika Kuthiala

Hi,
short answer: No.
1. using WD references outside of WD DCs is unsupported and will at least show a warning when you try to deploy. Correct usage of runtime dependencies is not predictable.
2. WebDynpro Controllers have a lifecycle that is controlled by the Framework. Even if you manage to initialize a Controller via "new" and use a method, the Controller will never have all the state-information it contains when started regualary. (think of mapped context, context attributes in general, code called in wdInit ...) I would suppose it is possible to implement a runnable low-profile example that still works, but as soon as you try to use "higher" concepts of WD (which would be the only reason to use a WD Component Controller at all), you will definitely fail.
3. Think of it as calling EJBs Session Beans via "new", but more complex.
hope that helps
Jan

Method Component Controller

Hi,
I have a method of component controller that call a function via RFC and I have to specify the importing and exporting parameters: how can I do for to specify a parameter as a table?
Tks in advance...

Try creating a service call ..it will take care of creating a component controller method, context nodes for function module interface, the service call method created will have automatically genereated code which fetches data from importing params, calling the function module and then binding the data back to exporting param node.
To create service call just right click on your component and select - create service call ; a wizard will guide you then..
Regards
Manas Dua

How to access the controller method from javascript onclick event?

Hi All,
I am totally new to development. And I got struck in calling a controller method from javascript function.
I have no idea about ajax and all those things. Please can anyone help me to solve this issue!
Thanks in advance.

Hi,
As I know, you can use jQuery to do this, here is an example.
Example of your Controller Method.
[HttpPost] // can be HttpGet
public ActionResult Test(string id)
bool isValid = yourcheckmethod(); //.. check
var obj = new {
valid = isValid
return Json(obj);
and this would be your javascript function.
function checkValidId(checkId)
$.ajax({
url: 'controllerName/Test',
type: 'POST',
contentType: 'application/json;',
data: JSON.stringify({ id: checkId }),
success: function (valid)
if(valid) { //show that id is valid }
else { //show that id is not valid }
If you have further issues, I would suggest you move to MVC forum, it is appropriate and more experts will assist you.
Best Regards,
Jambor
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Calling a method in view from component controller?

Hi,
Is it posible to call a method that is defined in the Component Controller in the View?
If it is posible please give some sample code how to call the method?
Regards,
Padmalatha.K

Padmalatha, all the methods defined in a controller from 'Methods' tab are instance methods. An instance method defined in a component controller is callable from any view controller that holds a reference to the component controller.
Defining methods between the tags
//@@begin others
//@@end
is useful if you want to declare static methods.

Calling Component controller method in webdynpro

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