templates/all: add paginated list of all browsable groups

1 files changed, 40 insertions, 0 deletions

diff --git a/pagination.py b/pagination.py
new file mode 100644
index 0000000..58fb869
--- /dev/null
+++ b/pagination.py
@@ -0,0 +1,40 @@
+from math import ceil
+from app import app
+from flask import url_for, request
+
+class Pagination(object):
+    def __init__(self, page, per_page, total_count):
+        self.page = page
+        self.per_page = per_page
+        self.total_count = total_count
+
+    @property
+    def pages(self):
+        return int(ceil(self.total_count / float(self.per_page)))
+
+    @property
+    def has_prev(self):
+        return self.page > 1
+
+    @property
+    def has_next(self):
+        return self.page < self.pages
+
+    def iter_pages(self, left_edge=2, left_current=2,
+                   right_current=5, right_edge=2):
+        last = 0
+        for num in xrange(1, self.pages + 1):
+            if num <= left_edge or \
+               (num > self.page - left_current - 1 and \
+                num < self.page + right_current) or \
+               num > self.pages - right_edge:
+                if last + 1 != num:
+                    yield None
+                yield num
+                last = num
+
+def url_for_other_page(page):
+    args = request.view_args.copy()
+    args['page'] = page
+    return url_for(request.endpoint, **args)
+app.jinja_env.globals['url_for_other_page'] = url_for_other_page