From 4209b858ecdbfd9a354d429883dfd86c4df4cf41 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Wed, 4 Jul 2012 14:32:29 +0200
Subject: o Adding paging when rendering c+j for department list.

---
 routes/index.js | 41 ++++++++++++++++++++++++-----------------
 1 file changed, 24 insertions(+), 17 deletions(-)

(limited to 'routes/index.js')

diff --git a/routes/index.js b/routes/index.js
index 8e4c28f..de7e0b1 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -36,6 +36,8 @@ function pager(req, count) {
     pageSize: pageSize,
     offset: offset,
     limit: limit,
+    page: offset / pageSize + 1,
+    pageCount: Math.round(count / pageSize),
     count: count,
     prevOffset: prevOffset >= 0 ? prevOffset : undefined,
     nextOffset: nextOffset < count ? nextOffset : undefined
@@ -94,6 +96,25 @@ function send_cj(req, res, c) {
   }
 }
 
+function linksFromPager(req, p, urlgenerator) {
+  var links = [];
+  if(_.isNumber(p.prevOffset)) {
+    links.push({
+      href: urlgenerator(_.extend({}, req.query, {offset: p.prevOffset})),
+      rel: 'prev',
+      prompt: 'Previous page (' + (p.page - 1) + ' of ' + p.pageCount + ')'
+    });
+  }
+  if(_.isNumber(p.nextOffset)) {
+    links.push({
+      href: urlgenerator(_.extend({}, req.query, {offset: p.nextOffset})),
+      rel: 'next',
+      prompt: 'Next page (' + (p.page + 1) + ' of ' + p.pageCount + ')'
+    });
+  }
+  return links;
+}
+
 function getIndex(req, res) {
   switch(req.accept.types.getBestMatch(['text/html', 'application/vnd.collection+json'])) {
   case 'text/html':
@@ -146,7 +167,8 @@ function getDepartments(req, res) {
         case '*/*':
           var c = {collection: {
             href: res.urlgenerator.departments(),
-            items: mapDepartments(res, rs2.rows)
+            items: mapDepartments(res, rs2.rows),
+            links: linksFromPager(req, p, res.urlgenerator.departments),
           }};
           send_cj(req, res, c);
           break;
@@ -284,24 +306,9 @@ function getEmployees(req, res) {
           break;
         case 'application/vnd.collection+json':
         case '*/*':
-          var links = [];
-          if(_.isNumber(p.prevOffset)) {
-            links.push({
-              href: res.urlgenerator.employees(_.extend({}, req.query, {offset: p.prevOffset})),
-              rel: 'prev',
-              prompt: 'Previous page'
-            });
-          }
-          if(_.isNumber(p.nextOffset)) {
-            links.push({
-              href: res.urlgenerator.employees(_.extend({}, req.query, {offset: p.nextOffset})),
-              rel: 'next',
-              prompt: 'Next page'
-            });
-          }
           var c = {collection: {
             href: res.urlgenerator.employees(req.query),
-            links: links,
+            links: linksFromPager(req, p, res.urlgenerator.employees),
             queries: [{
               href: res.urlgenerator.employees(),
               rel: 'search',
-- 
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