Question

I am developing a Portlet with Liferay (using liferay-ui in the JSP) and SpringMVC.

I have the following code in my JSP:

<liferay-ui:search-container delta="5" emptyResultsMessage="no books!">
  <%
    List<Book> bookList = (List<Book>)request.getAttribute("bookList");
    List<Book> bookListView = ListUtil.subList(bookList, searchContainer.getStart(), searchContainer.getEnd());
  %>
<liferay-ui:search-container-results results="<%= bookListView %>" total="${numberOfBooks}">

</liferay-ui:search-container-results>
  ...

I’d really like to get rid of the Java Code Block in the JSP and have the bookListView as model attribute just like numberOfBooks in the above code.

However, I can’t find a way to access searchContainer from the Spring Controller to get the start and end of the pagination…

Any ideas? Thx!

Answer 1

This might work for you:

SearchContainer<Book> searchContainer = new SearchContainer<Book>(renderRequest, renderResponse.createRenderURL(), null, "there are no books");

Or else,

You can get the parameters from request: delta=20 & cur=2

where cur is the current page which is requested and delta is the total number of items on a page.

With this you can calculate the start (0,20,40, …) and end (19,39,59, …) as does liferay’s SearchContainer with this method:

private void _calculateStartAndEnd() {
    _start = (_cur - 1) * _delta;
    _end = _start + _delta;

    _resultEnd = _end;

    if (_resultEnd > _total) {
        _resultEnd = _total;
    }
}