philomena/lib/philomena_web/views/pagination_view.ex
2019-12-08 12:55:55 -05:00

46 lines
1.2 KiB
Elixir

defmodule PhilomenaWeb.PaginationView do
use PhilomenaWeb, :view
def first_page?(page) do
page.page_number == 1
end
def last_page?(page) do
page.page_number == page.total_pages
end
def page_path(route, params, number) do
route.([{:page, number} | params])
end
def first_page_path(_page, route, params), do: page_path(route, params, 1)
def prev_page_path(page, route, params), do: page_path(route, params, page.page_number - 1)
def next_page_path(page, route, params), do: page_path(route, params, page.page_number + 1)
def last_page_path(page, route, params), do: page_path(route, params, page.total_pages)
def left_gap?(page) do
page.page_number >= 5
end
def left_page_numbers(page) do
number = page.page_number
min = 1
max = page.total_pages
(number - 5..number)
|> Enum.filter(& &1 >= min and &1 != number and &1 <= max)
end
def right_gap?(page) do
page.total_pages - page.page_number >= 5
end
def right_page_numbers(page) do
number = page.page_number
min = 1
max = page.total_pages
(number .. number + 5)
|> Enum.filter(& &1 >= min and &1 != number and &1 <= max)
end
end