| import os |
import os |
| from logging import getLogger |
from logging import getLogger |
| |
|
| from genshi.filters.transform import Transformer |
from genshi.filters.transform import Transformer |
| |
|
| from ckan.plugins import implements, SingletonPlugin |
from ckan.plugins import implements, SingletonPlugin |
| from ckan.plugins import IConfigurer |
from ckan.plugins import IConfigurer |
| from ckan.plugins import IGenshiStreamFilter |
from ckan.plugins import IGenshiStreamFilter |
| from ckan.plugins import IRoutes |
from ckan.plugins import IRoutes |
| |
|
| log = getLogger(__name__) |
log = getLogger(__name__) |
| |
|
| |
|
| class ExamplePlugin(SingletonPlugin): |
class ExamplePlugin(SingletonPlugin): |
| """This plugin demonstrates how a theme packaged as a CKAN |
"""This plugin demonstrates how a theme packaged as a CKAN |
| extension might extend CKAN behaviour. |
extension might extend CKAN behaviour. |
| |
|
| In this case, we implement three extension interfaces: |
In this case, we implement three extension interfaces: |
| |
|
| - ``IConfigurer`` allows us to override configuration normally |
- ``IConfigurer`` allows us to override configuration normally |
| found in the ``ini``-file. Here we use it to specify the site |
found in the ``ini``-file. Here we use it to specify the site |
| title, and to tell CKAN to look in this package for templates |
title, and to tell CKAN to look in this package for templates |
| and resources that customise the core look and feel. |
and resources that customise the core look and feel. |
| - ``IGenshiStreamFilter`` allows us to filter and transform the |
- ``IGenshiStreamFilter`` allows us to filter and transform the |
| HTML stream just before it is rendered. In this case we use |
HTML stream just before it is rendered. In this case we use |
| it to rename "frob" to "foobar" |
it to rename "frob" to "foobar" |
| - ``IRoutes`` allows us to add new URLs, or override existing |
- ``IRoutes`` allows us to add new URLs, or override existing |
| URLs. In this example we use it to override the default |
URLs. In this example we use it to override the default |
| ``/register`` behaviour with a custom controller |
``/register`` behaviour with a custom controller |
| """ |
""" |
| implements(IConfigurer, inherit=True) |
implements(IConfigurer, inherit=True) |
| implements(IGenshiStreamFilter, inherit=True) |
implements(IGenshiStreamFilter, inherit=True) |
| implements(IRoutes, inherit=True) |
implements(IRoutes, inherit=True) |
| |
|
| def update_config(self, config): |
def update_config(self, config): |
| """This IConfigurer implementation causes CKAN to look in the |
"""This IConfigurer implementation causes CKAN to look in the |
| ```public``` and ```templates``` directories present in this |
```public``` and ```templates``` directories present in this |
| package for any customisations. |
package for any customisations. |
| |
|
| It also shows how to set the site title here (rather than in |
It also shows how to set the site title here (rather than in |
| the main site .ini file), and causes CKAN to use the |
the main site .ini file), and causes CKAN to use the |
| customised package form defined in ``package_form.py`` in this |
customised package form defined in ``package_form.py`` in this |
| directory. |
directory. |
| """ |
""" |
| here = os.path.dirname(__file__) |
here = os.path.dirname(__file__) |
| rootdir = os.path.dirname(os.path.dirname(here)) |
rootdir = os.path.dirname(os.path.dirname(here)) |
| our_public_dir = os.path.join(rootdir, 'ckanext', |
our_public_dir = os.path.join(rootdir, 'ckanext', |
| 'example', 'theme', 'public') |
'example', 'theme', 'public') |
| template_dir = os.path.join(rootdir, 'ckanext', |
template_dir = os.path.join(rootdir, 'ckanext', |
| 'example', 'theme', |
'example', 'theme', |
| 'templates') |
'templates') |
| # set our local template and resource overrides |
# set our local template and resource overrides |
| config['extra_public_paths'] = ','.join([our_public_dir, |
config['extra_public_paths'] = ','.join([our_public_dir, |
| config.get('extra_public_paths', '')]) |
config.get('extra_public_paths', '')]) |
| config['extra_template_paths'] = ','.join([template_dir, |
config['extra_template_paths'] = ','.join([template_dir, |
| config.get('extra_template_paths', '')]) |
config.get('extra_template_paths', '')]) |
| |
# add in the extra.css |
| |
config['ckan.template_head_end'] = config.get('ckan.template_head_end', '') +\ |
| |
'<link rel="stylesheet" href="/css/extra.css" type="text/css"> ' |
| # set the title |
# set the title |
| config['ckan.site_title'] = "An example CKAN theme" |
config['ckan.site_title'] = "Example CKAN theme" |
| # set the customised package form (see ``setup.py`` for entry point) |
# set the customised package form (see ``setup.py`` for entry point) |
| config['package_form'] = "example_form" |
config['package_form'] = "example_form" |
| |
|
| def filter(self, stream): |
def filter(self, stream): |
| """Conform to IGenshiStreamFilter interface. |
"""Conform to IGenshiStreamFilter interface. |
| |
|
| This example filter renames 'frob' to 'foobar' (this string is |
This example filter renames 'frob' to 'foobar' (this string is |
| found in the custom ``home/index.html`` template provided as |
found in the custom ``home/index.html`` template provided as |
| part of the package). |
part of the package). |
| """ |
""" |
| stream = stream | Transformer('//p[@id="examplething"]/text()')\ |
stream = stream | Transformer('//p[@id="examplething"]/text()')\ |
| .substitute(r'frob', r'foobar') |
.substitute(r'frob', r'foobar') |
| return stream |
return stream |
| |
|
| def before_map(self, map): |
def before_map(self, map): |
| """This IRoutes implementation overrides the standard |
"""This IRoutes implementation overrides the standard |
| ``/user/register`` behaviour with a custom controller. You |
``/user/register`` behaviour with a custom controller. You |
| might instead use it to provide a completely new page, for |
might instead use it to provide a completely new page, for |
| example. |
example. |
| |
|
| Note that we have also provided a custom register form |
Note that we have also provided a custom register form |
| template at ``theme/templates/user/register.html``. |
template at ``theme/templates/user/register.html``. |
| """ |
""" |
| # Note that when we set up the route, we must use the form |
# Note that when we set up the route, we must use the form |
| # that gives it a name (i.e. in this case, 'register'), so it |
# that gives it a name (i.e. in this case, 'register'), so it |
| # works correctly with the url_for helper:: |
# works correctly with the url_for helper:: |
| # h.url_for('register') |
# h.url_for('register') |
| map.connect('register', |
map.connect('register', |
| '/user/register', |
'/user/register', |
| controller='ckanext.example.controller:CustomUserController', |
controller='ckanext.example.controller:CustomUserController', |
| action='custom_register') |
action='custom_register') |
| map.connect('/package/new', controller='package_formalchemy', action='new') |
map.connect('/package/new', controller='package_formalchemy', action='new') |
| map.connect('/package/edit/{id}', controller='package_formalchemy', action='edit') |
map.connect('/package/edit/{id}', controller='package_formalchemy', action='edit') |
| return map |
return map |
| |
|