public ActionResult List(int page=1)
{
int page_size = 3;
// Move this out of the controller and into a 'Query' layer
// Shouldn't have any notion of repositories in the controllers
// Add tests to this kind of logic at the infrastructure layer with a combo of:
// https://ludwigstuyck.wordpress.com/2013/03/05/a-reference-architecture-part-7/
// https://msdn.microsoft.com/en-gb/data/dn314429.aspx
// Need to also think about how/where to calculate the paging info/links. Straight from MVC book at the moment.
// Love the idea of HTML Helpers though...
var all_pictures = picture_repository.Get();
var view_pictures = all_pictures
.OrderBy(p => p.id)
.Skip((page - 1) * page_size)
.Take(page_size)
;
var paging_info = new PagingInfo
{
current_page = page,
items_per_page = page_size,
total_items = all_pictures.Count()
};
var model = new PictureListViewModel
{
pictures = view_pictures,
paging_info = paging_info
};
return View(model);
}
public static MvcHtmlString PageLinks (this HtmlHelper html, PagingInfo paging_info, Func<int,string> page_url)
{
StringBuilder result = new StringBuilder();
for (int i=1; i<=paging_info.total_pages; i++)
{
var tag = new TagBuilder("a");
tag.MergeAttribute("href", page_url(i));
tag.InnerHtml = i.ToString();
if (i == paging_info.current_page)
{
tag.AddCssClass("selected");
tag.AddCssClass("btn-primary");
}
tag.AddCssClass("btn btn-default");
result.Append(tag.ToString());
}
return MvcHtmlString.Create(result.ToString());
}