lpirir · August 29, 2015 14:15 · Sep 23, 2014 · Sep 23, 2014
diff --git a/jinja2plugin.py b/jinja2plugin.py
@@ -22,7 +22,7 @@ def stop(self):
         """
         Called when the engine stops. 
         """
-        self.bus.log('Freeing up Mako resources')
+        self.bus.log('Freeing up Jinja2 resources')
         self.bus.unsubscribe("lookup-template", self.get_template)
         self.env = None
 

diff --git a/__init__.py b/__init__.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+
+# http://docs.cherrypy.org/en/latest/advanced.html?highlight=jinja2#html-templating-support
+
+import os.path
+import cherrypy
+
+class Root(object):
+    @cherrypy.expose
+    def index(self):
+        return {'msg': 'Hello world!'}
+
+if __name__ == '__main__':
+    cherrypy.config.update({'server.socket_port': 8090})
+    # Register the Jinja2 plugin
+    from jinja2 import Environment, FileSystemLoader
+    from jinja2plugin import Jinja2TemplatePlugin
+    env = Environment(loader=FileSystemLoader('.'))
+    Jinja2TemplatePlugin(cherrypy.engine, env=env).subscribe()
+
+    # Register the Jinja2 tool
+    from jinja2tool import Jinja2Tool
+    cherrypy.tools.template = Jinja2Tool()
+
+    # We must disable the encode tool because it
+    # transforms our dictionary into a list which
+    # won't be consumed by the jinja2 tool
+    cherrypy.quickstart(Root(), '', {'/': {'tools.template.on': True,
+                                           'tools.template.template': 'index.html',
+                                           'tools.encode.on': False}})
+
+
diff --git a/index.html b/index.html
@@ -0,0 +1,10 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-15">
+<title></title>
+</head>
+<body>
+{{msg}}
+</body>
+</html>
diff --git a/jinja2plugin.py b/jinja2plugin.py
@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+import cherrypy
+from cherrypy.process import plugins
+
+__all__ = ['Jinja2TemplatePlugin']
+
+class Jinja2TemplatePlugin(plugins.SimplePlugin):
+    """A WSPBus plugin that manages Jinja2 templates"""
+
+    def __init__(self, bus, env):
+        plugins.SimplePlugin.__init__(self, bus)
+        self.env = env
+
+    def start(self):
+        """
+        Called when the engine starts. 
+        """
+        self.bus.log('Setting up Jinja2 resources')
+        self.bus.subscribe("lookup-template", self.get_template)
+
+    def stop(self):
+        """
+        Called when the engine stops. 
+        """
+        self.bus.log('Freeing up Mako resources')
+        self.bus.unsubscribe("lookup-template", self.get_template)
+        self.env = None
+
+    def get_template(self, name):
+        """
+        Returns Jinja2's template by name.
+
+        Used as follow:
+        >>> template = cherrypy.engine.publish('lookup-template', 'index.html').pop()
+        """
+        return self.env.get_template(name)
+
diff --git a/jinja2tool.py b/jinja2tool.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+import cherrypy
+
+__all__ = ['Jinja2Tool']
+
+class Jinja2Tool(cherrypy.Tool):
+    def __init__(self):
+        cherrypy.Tool.__init__(self, 'before_finalize',
+                               self._render,
+                               priority=10)
+
+    def _render(self, template=None, debug=False):
+        """
+        Applied once your page handler has been called. It
+        looks up the template from the various template directories
+        defined in the Jinja2 plugin then renders it with
+        whatever dictionary the page handler returned.
+        """
+        if cherrypy.response.status > 399:
+            return
+
+        # retrieve the data returned by the handler
+        data = cherrypy.response.body or {}
+        template = cherrypy.engine.publish("lookup-template", template).pop()
+
+        if template and isinstance(data, dict):
+            cherrypy.response.body = template.render(**data)
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