Dynamic Link and Buttons doesnt work inside richTable

[mkaliyur]

HI,

First of all, thanks for the great components.

I have an issue with dataTable - I need to dynamically create HtmlCommandLink and HtmlCommandButtons with binding attributes and display them inside richTable columns. The Links and buttons works outside the table with same method bindings, but doesnt fire actions or action listeners if placed inside the richTable. Note that the richTable itself if created dynamically by programmactically creating UIDataTable.

The code snippets for dynamic links and buttons are below ..

HtmlCommandLink cl = new HtmlCommandLink();

MethodExpression mexCol0=context.getApplication).getExpressionFactory().createMethodExpression(context.getELContext(), "#MappEnvService.dummy}", String.class, new Class<?>[0]);

cl.setValue("SelectRow");
cl.setActionExpression(mexCol0);
HtmlPanelGrid pg = new HtmlPanelGrid(); //for testing only
pg.setColumns(1);
pg.getChildren().add(cl);

HtmlInputNumberSpinner tspn = new HtmlInputNumberSpinner();
tspn.setMaxValue("10");
tspn.setMinValue("0");

HtmlCommandButton btn = new HtmlCommandButton();
btn.addActionListener(new MappGridTab());

btn.setValue("Test");
MethodExpression mexCol1=context.getApplication().getExpressionFactory().createMethodExpression(context.getELContext(), "#{MappEnvService.dummy}", String.class, new Class<?>[0]);


btn.setActionExpression(mexCol1);
pg.getChildren().add(tspn);

pg.getChildren().add(btn);


col.getChildren().add(pg);
columnList.add(col);

The spinner control works fine within the columns - Not sure why only Link or button shouldnt work - On click of button or link, request goes to server, and page refreshes as if the action return is null - but doesnt display any log messages in action method or action listener.

Same Link or button works fine if outside the dataTable.

I appreciate any feedback on what mistake I'm doing. . do I need a new form around each link?

Manju

[sergeysmirnov]

id should be set explicitly. It is important inside the iteration components (dataTable, repear, tree, dataGrid and so on)

[alexsmirnov]

You MUST set any id value for a components. JSF UIComponentBase have code for a calculate clientId :

 // now resolve our own client id
 this.clientId = this.id;
 if (this.clientId == null) {
 this.clientId = context.getViewRoot().createUniqueId();
 }

UIDataTable reset cached clientId at every iteration. as a result, component have different values on different phases, and look in request parameters for a wrong name.

[mkaliyur]

Thanks for the reply!

I'll try this and post the result! You guys rock.

M

[mkaliyur]

Yes. That was the problem! After assigning IDs links and buttons work perfectly inside richtable.

I had one issue though - We can't assign a value expression to ID - I was planning to dynamically generate the ID for each row - but jsf didnt allow me to assign value expression to id attribute. I had to use setId method and assign a string. Then, I tried to use getValue method of value expression to get the value and set in setId method, but that returned null. Finally generated a generic incremental ID and it worked!

Thanks for the help.
Manju

[sukhendu83]

Hi Manjunath,

I have same problem, since I am new in richfaces I didn't get your point. If you can post the bean and rich datatable source code then it will be great.

I have tried it in different ways, but didn't get any result. When I click on that link my datatable getting blank.

Thanks

Sukhendu