webmcp

view framework/env/ui/paginate.lua @ 80:ca3f7b001014

Made new anchor feature working
author bsw
date Wed Jun 27 19:14:34 2012 +0200 (2012-06-27)
parents 3a6962b9121c
children 2f8d8edd1836
line source
1 --[[--
2 ui.paginate{
3 selector = selector, -- a selector for items from the database (will be modified)
4 anchor = anchor, -- optional name of anchor in document to jump to
5 per_page = per_page, -- items per page, defaults to 10
6 container_attr = container_attr -- html attr for the container element
7 name = name, -- name of the CGI get variable, defaults to "page"
8 page = page, -- directly specify a page, and ignore 'name' parameter
9 content = function()
10 ... -- code block which should be encapsulated with page selection links
11 end
12 }
14 This function preceeds and appends the output of the given 'content' function with page selection links. The passed selector will be modified to show only a limited amount ('per_page') of items. The currently displayed page will be determined directly by cgi.params, and not via the param.get(...) function, in order to pass page selections automatically to sub-views.
16 --]]--
18 function ui.paginate(args)
19 local selector = args.selector
20 local per_page = args.per_page or 10
21 local name = args.name or 'page'
22 local content = args.content
23 local count_selector = selector:get_db_conn():new_selector()
24 count_selector:add_field('count(1)')
25 count_selector:add_from(selector)
26 count_selector:single_object_mode()
27 local count = count_selector:exec().count
28 local page_count = 1
29 if count > 0 then
30 page_count = math.floor((count - 1) / per_page) + 1
31 end
32 local current_page = atom.integer:load(cgi.params[name]) or 1
33 if current_page > page_count then
34 current_page = page_count
35 end
36 selector:limit(per_page)
37 selector:offset((current_page - 1) * per_page)
38 local id = param.get_id_cgi()
39 local params = param.get_all_cgi()
40 local function pagination_elements()
41 if page_count > 1 then
42 for page = 1, page_count do
43 if page > 1 then
44 slot.put(" ")
45 end
46 params[name] = page
47 local attr = {}
48 if current_page == page then
49 attr.class = "active"
50 end
51 local partial
52 if ui.is_partial_loading_enabled() then
53 partial = {
54 params = {
55 [name] = tostring(page)
56 }
57 }
58 end
59 ui.link{
60 attr = attr,
61 module = request.get_module(),
62 view = request.get_view(),
63 id = id,
64 params = params,
65 anchor = args.anchor,
66 text = tostring(page),
67 partial = partial
68 }
69 end
70 end
71 end
72 ui.container{
73 attr = args.container_attr or { class = 'ui_paginate' },
74 content = function()
75 ui.container{
76 attr = { class = 'ui_paginate_head ui_paginate_select' },
77 content = pagination_elements
78 }
79 ui.container{
80 attr = { class = 'ui_paginate_content' },
81 content = content
82 }
83 ui.container{
84 attr = { class = 'ui_paginate_foot ui_paginate_select' },
85 content = pagination_elements
86 }
87 end
88 }
89 end

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