From dacfc5fe13dc6b46fa90e5ef9fb07509afd5d777 Mon Sep 17 00:00:00 2001
From: Alexander Sulfrian <alex@spline.inf.fu-berlin.de>
Date: Wed, 19 Nov 2014 02:38:09 +0100
Subject: templates/all: add paginated list of all browsable groups

---
 pagination.py              | 40 ++++++++++++++++++++++++++++++++++++++++
 templates/_pagination.html | 27 +++++++++++++++++++++++++++
 templates/all.html         | 22 ++++++++++++++++++++++
 templates/index.html       |  4 ++++
 views.py                   | 14 ++++++++++++++
 5 files changed, 107 insertions(+)
 create mode 100644 pagination.py
 create mode 100644 templates/_pagination.html
 create mode 100644 templates/all.html

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
diff --git a/templates/_pagination.html b/templates/_pagination.html
new file mode 100644
index 0000000..f53df57
--- /dev/null
+++ b/templates/_pagination.html
@@ -0,0 +1,27 @@
+{% macro render_pagination(pagination) %}
+<ul class="pagination" style="margin-top: 5px; margin-bottom: 0; padding: 0">
+  {% if pagination.has_prev %}
+    <li><a href="{{ url_for_other_page(pagination.page - 1) }}">&laquo;</a></li>
+  {% else %}
+    <li class="disabled"><a href="#">&laquo;</a></li>
+  {% endif %}
+
+  {%- for page in pagination.iter_pages(1, 4, 4, 1) %}
+    {% if page %}
+      {% if page != pagination.page %}
+        <li><a href="{{ url_for_other_page(page) }}">{{ page }}</a></li>
+      {% else %}
+        <li class="active"><a href="#">{{ page }}</a></li>
+      {% endif %}
+    {% else %} 
+      <li class="disabled"><a href="#">…</a></li>
+    {% endif %}
+  {%- endfor %}
+
+  {% if pagination.has_next %}
+    <li><a href="{{ url_for_other_page(pagination.page + 1) }}">&raquo;</a></li>
+  {% else %}
+    <li class="disabled"><a href="#">&raquo;</a></li>
+  {% endif %}
+</ul>
+{% endmacro %}
diff --git a/templates/all.html b/templates/all.html
new file mode 100644
index 0000000..d50bf56
--- /dev/null
+++ b/templates/all.html
@@ -0,0 +1,22 @@
+{% extends "layout.html" %}
+{% from "_pagination.html" import render_pagination %}
+
+{% block head %}Public groups{% endblock %}
+
+{% block content %}
+<div class="panel panel-default">
+  <div class="panel-heading">
+    <h3 class="panel-title">Public groups</h3>
+  </div>
+
+  <div class="list-group">
+    {% for group in groups %}
+      <span class="list-group-item">{{group}}</span>
+    {% endfor %}
+  </div>
+
+  <div class="panel-footer text-center">
+    {{ render_pagination(pagination) }}
+  </div>
+</div>
+{% endblock %}
diff --git a/templates/index.html b/templates/index.html
index c6583a1..1c4e612 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -14,6 +14,10 @@
       <a class="list-group-item" href="{{ url_for('group', group_name=group.name) }}">{{group}}</a>
     {% endfor %}
   </div>
+
+  <div class="panel-footer">
+    <a href="{{ url_for('all') }}">Find public browsable groups</a>
+  </div>
 </div>
 
 <div class="panel panel-default">
diff --git a/views.py b/views.py
index f52697c..d36e1ab 100644
--- a/views.py
+++ b/views.py
@@ -5,6 +5,7 @@ from flask_peewee.utils import get_object_or_404
 from models import Group, Member
 from forms import CreateGroup, DeleteForm, ChangeGroup
 from utils import templated
+from pagination import Pagination
 from filters import *
 
 def get_group_or_404(*query):
@@ -27,6 +28,19 @@ def index():
     return {'groups': groups, 'create_form': form}
 
 
+@app.route('/_all/', defaults={'page': 1})
+@app.route('/_all/_page/<int:page>')
+@templated('all.html')
+def all(page):
+    user_groups = Group.select().join(Member).where(Member.user == g.user)
+    public_groups = Group.select().where(~(Group.id << user_groups)).where(Group.browsable == True)
+    count = public_groups.count()
+    return {'groups': public_groups.paginate(page, 10),
+            'count': count,
+            'pagination': Pagination(page, 10, count),
+            'breadcrumbs': [{'text': 'Public groups'}]}
+
+
 @app.route('/<group_name>/_delete/', methods=['GET', 'POST'])
 @templated('group_delete.html')
 @auth.login_required
-- 
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