Flask integration for the Fanstatic resource publishing system.
Fanstatic is a flexible system for managing the static resources (CSS and Javascript) used by your web application. This extension provides simple integration between Fanstatic and Flask.
Adding static resources to your application becomes as simple as installing them with pip:
pip install js.jquery
and need-ing them in your template:
{{ g.fanstatic.needs('js.jquery:jquery') }}
To start using Flask-Fanstatic, import and initialize the extension for your Flask application:
from flask import Flask from flask_fanstatic import Fanstatic app = Flask(__name__) fanstatic = Fanstatic(app)
Then, in your base template, add the top and bottom resources to include
them in your HTML:
<head>
{{ g.fanstatic.top }}
</head>
<body>
...content...
{{ g.fanstatic.bottom }}
</body>
You can declare resource to include, by using the needs() helper to declare
resources needed by your template:
{{- g.fanstatic.needs('js.jquery:jquery') -}}
{% extends 'layout.html' %}
...
Note
The example above uses dashes to tell Jinja to strip the extra whitespace such as the newline after the expression. See the Jinja docs for more details: http://jinja.pocoo.org/docs/templates/#whitespace-control
Fanstatic will use the top and bottom helpers above to include the CSS
or JavaScript resources need-ed automatically.
You can also need multiple resources:
{{ g.fanstatic.needs(
'js.jquery:jquery',
'js.handlebars:handlebars'
) }}
The needs() method takes any number of strings, in the form
<module>:<resource>. You can alternatively import the resources from your
code and require them like:
from js.jquery import jquery
@app.route('/')
def index():
jquery.need()
return render_template('index.html')
Flask-Fanstatic also makes it easy to add your application's own static files as Fanstatic resources.
You can use the resource() helper to declare a resource in your
application's 'static' folder:
fanstatic.resource('js/app.js', name='app_js', depends=[jquery])
To include the resource, just use its name to require it in your template:
{{ g.fanstatic.needs('app_js') }}
You can also declare named groups of resources:
from js.jquery import jquery
fanstatic.resource('css/app.js', name='app_js')
# there are 3 ways to specify a group resource item:
fanstatic.group('app_resources', [
# with an imported resource:
jquery,
# with the name of an internal resource:
'app_js',
# with an inline resource:
fanstatic.resource('css/app.css'),
])
Groups are included in the same way from the template:
{{ g.fanstatic.needs('app_resources') }}
Blueprints can also use Fanstatic in almost the same way as application
resources. Start by initializing a Fanstatic() object for your blueprint,
and declare its resources:
bluep = Blueprint('bluep', __name__, static_folder='static')
fanstatic = Fanstatic(bluep)
fanstatic.resource('bluep.css', name='bluep_css')
In the template, reference resources from the current blueprint as .<name>:
{{ g.fanstatic.needs('.bluep_css') }}
Or explicitly provide the name of a blueprint to include a resource from a specific blueprint:
{{ g.fanstatic.needs('bluep.bluep_css') }}