Integration

Jinja provides some code for integration into other tools such as frameworks, the Babel library or your favourite editor for fancy code highlighting. This is a brief description of whats included.

Files to help integration are available here.

Babel Integration

Jinja provides support for extracting gettext messages from templates via a Babel extractor entry point called jinja2.ext.babel_extract. The Babel support is implemented as part of the i18n Extension extension.

Gettext messages extracted from both trans tags and code expressions.

To extract gettext messages from templates, the project needs a Jinja section in its Babel extraction method mapping file:

[jinja2: **/templates/**.html]
encoding = utf-8

The syntax related options of the Environment are also available as configuration values in the mapping file. For example to tell the extraction that templates use % as line_statement_prefix you can use this code:

[jinja2: **/templates/**.html]
encoding = utf-8
line_statement_prefix = %

Extensions may also be defined by passing a comma separated list of import paths as extensions value. The i18n extension is added automatically.

Changelog

Changed in version 2.7: Until 2.7 template syntax errors were always ignored. This was done since many people are dropping non template html files into the templates folder and it would randomly fail. The assumption was that testsuites will catch syntax errors in templates anyways. If you don’t want that behavior you can add silent=false to the settings and exceptions are propagated.

Pylons

With Pylons 0.9.7 onwards it’s incredible easy to integrate Jinja into a Pylons powered application.

The template engine is configured in config/environment.py. The configuration for Jinja looks something like that:

from jinja2 import Environment, PackageLoader
config['pylons.app_globals'].jinja_env = Environment(
    loader=PackageLoader('yourapplication', 'templates')
)

After that you can render Jinja templates by using the render_jinja function from the pylons.templating module.

Additionally it’s a good idea to set the Pylons’ c object into strict mode. Per default any attribute to not existing attributes on the c object return an empty string and not an undefined object. To change this just use this snippet and add it into your config/environment.py:

config['pylons.strict_c'] = True

TextMate

There is a bundle for TextMate that supports syntax highlighting for Jinja 1 and Jinja 2 for text based templates as well as HTML. It also contains a few often used snippets.

Vim

A syntax plugin for Vim is available from the jinja repository. The script supports Jinja 1 and Jinja 2. Once installed, two file types are available (jinja and htmljinja). The first one is for text-based templates and the second is for HTML templates. For HTML documents, the plugin attempts to automatically detect Jinja syntax inside of existing HTML documents.

If you are using a plugin manager like Pathogen, see the vim-jinja repository for installing in the bundle/ directory.