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from pystache import Template
import os.path
import re
class View(object):
# Path where this view's template(s) live
template_path = '.'
# Extension for templates
template_extension = 'mustache'
# The name of this template. If none is given the View will try
# to infer it based on the class name.
template_name = None
# Absolute path to the template itself. Pystache will try to guess
# if it's not provided.
template_file = None
# Contents of the template.
template = None
def __init__(self, template=None, context=None, **kwargs):
self.template = template
self.context = context or {}
# If the context we're handed is a View, we want to inherit
# its settings.
if isinstance(context, View):
self.inherit_settings(context)
if kwargs:
self.context.update(kwargs)
def inherit_settings(self, view):
"""Given another View, copies its settings."""
if view.template_path:
self.template_path = view.template_path
if view.template_name:
self.template_name = view.template_name
def __contains__(self, needle):
return hasattr(self, needle)
def __getitem__(self, attr):
return getattr(self, attr)()
def load_template(self):
if self.template:
return self.template
if not self.template_file:
name = self.get_template_name() + '.' + self.template_extension
self.template_file = os.path.join(self.template_path, name)
f = open(self.template_file, 'r')
template = f.read()
f.close()
return template
def get_template_name(self, name=None):
"""TemplatePartial => template_partial
Takes a string but defaults to using the current class' name or
the `template_name` attribute
"""
if self.template_name:
return self.template_name
if not name:
name = self.__class__.__name__
def repl(match):
return '_' + match.group(0).lower()
return re.sub('[A-Z]', repl, name)[1:]
def get(self, attr, default):
attr = self.context.get(attr, getattr(self, attr, default))
if hasattr(attr, '__call__'):
return attr()
else:
return attr
def render(self, encoding=None):
template = self.load_template()
return Template(template, self).render(encoding=encoding)
def __str__(self):
return self.render()
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