Skip to main content

Jinja2 extension to enable the use of any filter as a custom autescape filter.

Project description


Jinja2 extension to enable the use of any filter as a custom autoscape filter.

This package allows you to define rules to determine when your custom autoescaping filter will be enabled using the same 'select_autoescape' method you already use to determine when the built-in autoescaping filter is enabled.


from jinja2_ext_custom_autoescaping import CustomAutoescapeExtension, enable_custom_autoescaping
from jinja2 import Environment, select_autoescape, FileSystemLoader

# Your custom filter...        
def my_filter(val):
    if isinstance(val, str):
        return val.replace(r"\\", r"\\\\")
    return val

# Here you set the rules for when the built-in autoescaping will be enabled
built_in_select_autoescape = select_autoescape(enabled_extensions=['html', 'htm', 'xml'],
                                               disabled_extensions=['txt', 'tex'],

# - select_autoescape is a closure
# - enabled_extensions takes precedence over disabled_extensions, so an extension in both lists will be enabled
# - You most likely do not want to have custom autoescaping on while built-in autoescaping is also on

# Here you set the rules for when your custom autoescaping will be enabled
custom_select_autoescape = select_autoescape(enabled_extensions=['tex', 'txt'],

# Just focusing on the important parts of your Environment construction.
env = Environment(extensions=[CustomAutoescapeExtension],

opts = {'custom_select_autoescape': custom_select_autoescape,
        'custom_autoescape_filter_name': 'my_filter',
        'custom_autoescape_filter_func': my_filter}

# Register the filter and enables autoescaping
enable_custom_autoescaping(env, **opts)

# Now you are ready to go...
template = env.get_template('test_template.txt')
print(template.render(var={'entry 1': 'value 1', 'entry2': r'val\\ue 2'}))

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for jinja2-ext-custom-autoescaping, version 0.1.0
Filename, size File type Python version Upload date Hashes
Filename, size jinja2_ext_custom_autoescaping-0.1.0-py3-none-any.whl (4.5 kB) File type Wheel Python version py3 Upload date Hashes View
Filename, size jinja2-ext-custom-autoescaping-0.1.0.tar.gz (2.9 kB) File type Source Python version None Upload date Hashes View

Supported by

Pingdom Pingdom Monitoring Google Google Object Storage and Download Analytics Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page