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jbe/bsw@0
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1 --[[--
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jbe/bsw@0
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2 ui.paginate{
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jbe@569
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3 selector = selector, -- a selector for items from the database (will be modified)
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jbe@569
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4 anchor = anchor, -- optional name of anchor in document to jump to
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jbe@569
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5 per_page = per_page, -- items per page, defaults to 10
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jbe@569
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6 container_attr = container_attr, -- html attr for the container element
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jbe@569
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7 link_attr = link_attr, -- html attr for each page link
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jbe@569
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8 active_link_attr = active_link_attr, -- alternative html attr for the active page link
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jbe@569
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9 name = name, -- name of the CGI get variable, defaults to "page"
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10 position = position, -- position of page links relative to content: "before", "after", or "both" (default)
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jbe@569
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11 content = function()
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jbe@569
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12 ... -- code block which should be encapsulated with page selection links
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jbe/bsw@0
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13 end
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jbe/bsw@0
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14 }
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jbe/bsw@0
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15
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jbe@223
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16 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 request.get_param{...}, and not via the param.get(...) function, in order to pass page selections automatically to sub-views.
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jbe@1
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17
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jbe/bsw@0
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18 --]]--
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jbe/bsw@0
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19
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jbe/bsw@0
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20 function ui.paginate(args)
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jbe@569
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21 local selector = args.selector
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jbe@569
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22 local anchor = args.anchor
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jbe@569
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23 local per_page = args.per_page or 10
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jbe@569
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24 local container_attr = args.container_attr or { class = 'ui_paginate' }
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jbe@569
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25 local link_attr = args.link_attr or {}
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jbe@569
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26 local active_link_attr = args.active_link_attr or link_attr
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jbe@569
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27 local name = args.name or 'page'
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jbe@569
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28 local position = args.position or 'both'
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jbe@569
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29 local content = args.content
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jbe/bsw@0
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30 local count_selector = selector:get_db_conn():new_selector()
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jbe/bsw@0
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31 count_selector:add_field('count(1)')
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jbe/bsw@0
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32 count_selector:add_from(selector)
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jbe/bsw@0
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33 count_selector:single_object_mode()
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jbe/bsw@0
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34 local count = count_selector:exec().count
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jbe@8
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35 local page_count = 1
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jbe@8
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36 if count > 0 then
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jbe@8
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37 page_count = math.floor((count - 1) / per_page) + 1
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jbe@8
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38 end
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jbe@223
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39 local current_page = atom.integer:load(request.get_param{name=name}) or 1
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jbe/bsw@2
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40 if current_page > page_count then
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jbe/bsw@2
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41 current_page = page_count
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jbe/bsw@2
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42 end
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jbe/bsw@0
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43 selector:limit(per_page)
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jbe/bsw@0
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44 selector:offset((current_page - 1) * per_page)
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jbe@92
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45 local id = request.get_id_string()
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jbe@92
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46 local params = request.get_param_strings()
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jbe/bsw@0
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47 local function pagination_elements()
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jbe/bsw@0
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48 if page_count > 1 then
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jbe/bsw@0
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49 for page = 1, page_count do
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jbe/bsw@0
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50 if page > 1 then
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jbe/bsw@0
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51 slot.put(" ")
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jbe/bsw@0
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52 end
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jbe/bsw@0
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53 params[name] = page
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jbe@569
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54 local attr
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jbe/bsw@0
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55 if current_page == page then
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jbe@569
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56 attr = table.new(active_link_attr)
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jbe@568
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57 if attr.class then
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jbe@568
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58 attr.class = attr.class .. " active"
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jbe@568
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59 else
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jbe@568
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60 attr.class = "active"
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jbe@568
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61 end
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jbe@569
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62 else
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jbe@569
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63 attr = table.new(link_attr)
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jbe/bsw@0
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64 end
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jbe/bsw@0
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65 ui.link{
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jbe/bsw@11
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66 attr = attr,
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jbe/bsw@0
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67 module = request.get_module(),
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jbe/bsw@0
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68 view = request.get_view(),
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jbe/bsw@0
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69 id = id,
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jbe/bsw@0
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70 params = params,
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jbe@568
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71 anchor = anchor,
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jbe@223
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72 text = tostring(page)
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jbe/bsw@0
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73 }
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jbe/bsw@0
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74 end
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jbe/bsw@0
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75 end
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jbe/bsw@0
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76 end
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jbe/bsw@0
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77 ui.container{
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jbe@568
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78 attr = container_attr,
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jbe/bsw@0
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79 content = function()
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jbe@568
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80 if position == 'before' or position == 'both' then
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jbe@568
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81 ui.container{
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jbe@568
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82 attr = { class = 'ui_paginate_head ui_paginate_select' },
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jbe@568
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83 content = pagination_elements
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jbe@568
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84 }
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jbe@568
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85 end
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jbe/bsw@0
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86 ui.container{
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jbe/bsw@0
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87 attr = { class = 'ui_paginate_content' },
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jbe/bsw@0
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88 content = content
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jbe/bsw@0
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89 }
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jbe@568
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90 if position == 'after' or position == 'both' then
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jbe@568
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91 ui.container{
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jbe@568
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92 attr = { class = 'ui_paginate_foot ui_paginate_select' },
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jbe@568
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93 content = pagination_elements
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jbe@568
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94 }
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jbe@568
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95 end
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jbe/bsw@0
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96 end
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jbe/bsw@0
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97 }
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jbe/bsw@0
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98 end
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