Changes example to redirect to the graph of latest version of pgraph.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>

pgraph/run.py

@@ -16,5 +16,6 @@ def main(global_config, **settings):
     config.add_route('linkdraw', '/api/linkdraw/{pkg}/{version}')
     config.add_route('graph', '/graph/{pkg}/{version}')
     config.add_route('search', '/search')
+    config.add_route('example', '/example')
     config.scan()
     return config.make_wsgi_app()

pgraph/templates/layout.pt

@@ -60,7 +60,7 @@
             <button class="btn btn-default" id="search-addon"><icon class="glyphicon glyphicon-search"/></button>
           </form>
           <ul class="nav navbar-nav navbar-right">          
-            <li><a href="/graph/pgraph/${version}" title="example">Example</a></li>
+            <li><a href="/example" title="example">Example</a></li>
           </ul>
         </div>
       </div>

pgraph/tests/test_views.py

@@ -88,3 +88,8 @@ def test_config(self):
         with open('pgraph/tests/data/config.js') as fobj:
             data = fobj.read()
         self.assertEqual(data.encode('utf-8'), res.body)
+
+    def test_example(self):
+        """unit test of example redirect."""
+        res = self.testapp.get('/example', status=302)
+        self.assertTrue('/graph/pgraph/' in res.location)

pgraph/views.py

@@ -2,6 +2,7 @@
 """pgraph.views module."""
 from pyramid.renderers import get_renderer
 from pyramid.view import view_config
+import pyramid.httpexceptions as exc
 from pgraph import __project__, __version__, __author__, __repo__, READTHEDOCS
 from pgraph import tasks
 
@@ -91,3 +92,11 @@ def search(self):
         self.meta['pkg_name'] = pkg_name
         self.meta['results'] = tasks.search(pkg_name)
         return self.meta
+
+    @view_config(route_name='example', renderer='templates/graph.pt')
+    def example(self):
+        """drawing example graph."""
+        raise exc.HTTPFound(
+            self.request.route_url('graph',
+                                   pkg=self.meta.get('project'),
+                                   version=self.meta.get('version')))