Quick Start¶

Install¶

Install with pip:

$ pip install pyramid_frontend

Integrate with a Pyramid App¶

Include pyramid_frontend, by calling config.include('pyramid_frontend') or adding pyramid_frontend to pyramid.includes.

Configure the following settings:

pyramid_frontend.compiled_asset_dir
pyramid_frontend.original_image_dir
pyramid_frontend.processed_image_dir
pyramid_frontend.compile

Add Themes¶

Register at least one theme, using the config.add_theme(theme) directive. You can also pass a dotted string (e.g. myapp.themes.foo.FooTheme) which will be resolved relative to the calling module.

Other possible mechanisms for theme registration which may be added later are a setuptools entrypoint or a settings key.

Themes are subclasses of the pyramid_frontend.Theme class.
Class attributes or properties can be set for resource configuration.
Paths are interpreted as relative to the directory of the module containing the class definition.
An example:

class MyTheme(Theme):
    template_dir = ...
    static_dir = ...
    image_filters = {
        'detail': ...
        'thumb': ...
    }
    assets = {
        'main-js': ('static/js/main.js', 'requirejs'),
        'main-less': ('static/css/main.less', 'less'),
    }

Use a Theme¶

Configure your application to use a theme, with one of the following methods:

Specify the pyramid_frontend.theme setting key.
Call config.set_theme_strategy(func) with a function that will return the theme to use.
An example:

def mobile_theme_strategy(request):
    if request.is_mobile and not request.session.get('use_desktop'):
        return 'my-mobile-theme'
    else:
        return 'my-desktop-theme'

Inside your app, specify a .html or .txt renderer. It will be rendered using the currently active theme (or call the theme strategy function to determine which theme to use).

The request object has a few added methods.

request.asset_tag(key) - Generate an asset tag (either a script tag or stylesheet tag, or some combination thereof) for a corresponding asset key. In production, this will point to a concatenated / minified file.
request.image_url(name, original_ext, filter_key) - Generate a URL for an image as processed by the specified filter chain.
request.image_tag(name, original_ext, filter_key, **kwargs) - Generate an img tag for an image as processed by the specified filter chain.
request.image_original_path(name, original_ext) - Return the filesystem path to the original file for this image.
request.theme is a reified property on request - Return the theme instance that will be used to serve this request.

Compile Assets¶

When using in production, call pcompile production.ini to generate static assets, or call pyramid_frontend.compile(registry.settings).