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jbe/bsw@0
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1 --[[--
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2 ui.paginate{
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3 selector = selector, -- a selector for items from the database
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4 per_page = per_page, -- items per page, defaults to 10
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5 name = name, -- name of the CGI get variable, defaults to "page"
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6 content = function()
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jbe/bsw@0
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7 ... -- code block which should be encapsulated with page selection links
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8 end
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9 }
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10
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11 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.
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12 --]]--
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13
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jbe/bsw@0
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14 function ui.paginate(args)
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15 local selector = args.selector
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16 local per_page = args.per_page or 10
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17 local name = args.name or 'page'
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18 local content = args.content
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19 local count_selector = selector:get_db_conn():new_selector()
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20 count_selector:add_field('count(1)')
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21 count_selector:add_from(selector)
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22 count_selector:single_object_mode()
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23 local count = count_selector:exec().count
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24 local page_count = math.floor((count - 1) / per_page) + 1
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25 local current_page = param.get(name, atom.integer) or 1
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26 selector:limit(per_page)
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27 selector:offset((current_page - 1) * per_page)
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28 local id = param.get_id_cgi()
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29 local params = param.get_all_cgi()
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jbe/bsw@0
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30 local function pagination_elements()
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31 if page_count > 1 then
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32 for page = 1, page_count do
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33 if page > 1 then
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34 slot.put(" ")
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35 end
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36 params[name] = page
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37 local attr = {}
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38 if current_page == page then
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39 attr.class = "active"
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40 end
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41 ui.link{
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42 attr = attr,
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43 module = request.get_module(),
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44 view = request.get_view(),
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45 id = id,
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46 params = params,
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47 text = tostring(page)
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48 }
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49 end
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50 end
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51 end
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52 ui.container{
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53 attr = { class = 'ui_paginate' },
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54 content = function()
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55 ui.container{
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56 attr = { class = 'ui_paginate_head ui_paginate_select' },
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57 content = pagination_elements
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58 }
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59 ui.container{
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60 attr = { class = 'ui_paginate_content' },
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61 content = content
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62 }
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63 ui.container{
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64 attr = { class = 'ui_paginate_foot ui_paginate_select' },
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65 content = pagination_elements
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66 }
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67 end
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68 }
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69 end
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