webmcp
view framework/env/ui/paginate.lua @ 11:d76a8857ba62
Added ui.partial and other functions, which allow partial content replacement using XMLHttpRequests; Image support for ui.link
Also includes following changes:
- Fix for rocketcgi library to accept POST data content-types, which contain additional charset information.
- Support arrays passed as params to encode.url (only for keys ending with "[]")
- Version information changed to "1.0.7"
Documentation for added functions is not yet complete.
Also includes following changes:
- Fix for rocketcgi library to accept POST data content-types, which contain additional charset information.
- Support arrays passed as params to encode.url (only for keys ending with "[]")
- Version information changed to "1.0.7"
Documentation for added functions is not yet complete.
| author | jbe/bsw |
|---|---|
| date | Fri Feb 12 18:40:22 2010 +0100 (2010-02-12) |
| parents | f02e14d1e69e |
| children | 81dfcfd960ed |
line source
1 --[[--
2 ui.paginate{
3 selector = selector, -- a selector for items from the database
4 per_page = per_page, -- items per page, defaults to 10
5 name = name, -- name of the CGI get variable, defaults to "page"
6 page = page, -- directly specify a page, and ignore 'name' parameter
7 content = function()
8 ... -- code block which should be encapsulated with page selection links
9 end
10 }
12 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.
14 --]]--
16 function ui.paginate(args)
17 local selector = args.selector
18 local per_page = args.per_page or 10
19 local name = args.name or 'page'
20 local content = args.content
21 local count_selector = selector:get_db_conn():new_selector()
22 count_selector:add_field('count(1)')
23 count_selector:add_from(selector)
24 count_selector:single_object_mode()
25 local count = count_selector:exec().count
26 local page_count = 1
27 if count > 0 then
28 page_count = math.floor((count - 1) / per_page) + 1
29 end
30 local current_page = atom.integer:load(cgi.params[name]) or 1
31 if current_page > page_count then
32 current_page = page_count
33 end
34 selector:limit(per_page)
35 selector:offset((current_page - 1) * per_page)
36 local id = param.get_id_cgi()
37 local params = param.get_all_cgi()
38 local function pagination_elements()
39 if page_count > 1 then
40 for page = 1, page_count do
41 if page > 1 then
42 slot.put(" ")
43 end
44 params[name] = page
45 local attr = {}
46 if current_page == page then
47 attr.class = "active"
48 end
49 local partial
50 if ui.is_partial_loading_enabled() then
51 partial = {
52 params = {
53 [name] = tostring(page)
54 }
55 }
56 end
57 ui.link{
58 attr = attr,
59 module = request.get_module(),
60 view = request.get_view(),
61 id = id,
62 params = params,
63 text = tostring(page),
64 partial = partial
65 }
66 end
67 end
68 end
69 ui.container{
70 attr = { class = 'ui_paginate' },
71 content = function()
72 ui.container{
73 attr = { class = 'ui_paginate_head ui_paginate_select' },
74 content = pagination_elements
75 }
76 ui.container{
77 attr = { class = 'ui_paginate_content' },
78 content = content
79 }
80 ui.container{
81 attr = { class = 'ui_paginate_foot ui_paginate_select' },
82 content = pagination_elements
83 }
84 end
85 }
86 end