openstack/deb-python-pecan
Code Issues Proposed changes

jinja2 templating support

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This commit is contained in:
Mark McClain
2011-03-12 16:20:01 -05:00
parent 357f89e75b
commit 4231eba596
4 changed files with 81 additions and 1 deletions
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31
pecan/templating.py
View File

@@ -91,6 +91,37 @@ try:
except ImportError: # pragma no cover
pass
#
# Jinja2 rendering engine
#
try:
from jinja2 import Environment, FileSystemLoader
from jinja2 import exceptions as jinja_exceptions
class JinjaRenderer(object):
def __init__(self, path, extra_vars):
self.env = Environment(loader=FileSystemLoader(path))
self.extra_vars = extra_vars
def render(self, template_path, namespace):
template = self.env.get_template(template_path)
return template.render(self.extra_vars.make_ns(namespace))
_builtin_renderers['jinja'] = JinjaRenderer
def format_jinja_error(exc_value):
import cgi
if isinstance(exc_value, (jinja_exceptions.TemplateSyntaxError)):
retval = '<h4>Jinja2 template syntax error in \'%s\' on line %d</h4>' % (exc_value.name, exc_value.lineno)
lines = [cgi.escape(x) for x in open(exc_value.filename)]
lineno = exc_value.lineno - 1 # files are 1 not 0 index
lines[lineno] = '<strong>%s</strong>' % lines[lineno]
retval +='<div style="background-color:#ccc;padding:2em;">%s</div>' % '<br>'.join(lines)
return retval
error_formatters.append(format_jinja_error)
except ImportError: # pragma no cover
pass
#
# Extra Vars Rendering
#

11
tests/templates/jinja.html Normal file
View File

@@ -0,0 +1,11 @@
<html>
<head>
<title>Hello, {{name}}!</title>
</head>
<body>
<h1>Hello, {{name}}!</h1>
</body>
</html>

12
tests/templates/jinja_bad.html Normal file
View File

@@ -0,0 +1,12 @@
<html>
<head>
<title>Hello, {{name}}!</title>
</head>
<body>
<h1>Hello, {{name}}!</h1>
</body>
{% block %}
</html>

28
tests/test_base.py
View File

@@ -706,6 +706,33 @@ class TestEngines(object):
r = app.get('/index.html?name=World')
assert r.status_int == 200
assert "<h1>Hello, World!</h1>" in r.body
def test_jinja(self):
if 'jinja' not in builtin_renderers:
return
class RootController(object):
@expose('jinja:jinja.html')
def index(self, name='Jonathan'):
return dict(name=name)
@expose('jinja:jinja_bad.html')
def badtemplate(self):
return dict()
app = TestApp(Pecan(RootController(), template_path=self.template_path))
r = app.get('/')
assert r.status_int == 200
assert "<h1>Hello, Jonathan!</h1>" in r.body
error_msg = None
try:
r = app.get('/badtemplate.html')
except Exception, e:
for error_f in error_formatters:
error_msg = error_f(e)
if error_msg:
break
assert error_msg is not None
def test_mako(self):
if 'mako' not in builtin_renderers:
@@ -724,7 +751,6 @@ class TestEngines(object):
assert r.status_int == 200
assert "<h1>Hello, Jonathan!</h1>" in r.body
app = TestApp(Pecan(RootController(), template_path=self.template_path))
r = app.get('/index.html?name=World')
assert r.status_int == 200
assert "<h1>Hello, World!</h1>" in r.body