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app_globals.py
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app_globals.py
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''' The application's Globals object '''
import logging
from paste.deploy.converters import asbool
from pylons import config
import ckan.model as model
log = logging.getLogger(__name__)
# mappings translate between config settings and globals because our naming
# conventions are not well defined and/or implemented
mappings = {
# 'config_key': 'globals_key',
}
# these config settings will get updated from system_info
auto_update = [
'ckan.site_title',
'ckan.site_logo',
'ckan.site_url',
'ckan.site_description',
'ckan.site_about',
'ckan.site_intro_text',
'ckan.site_custom_css',
]
# A place to store the origional config options of we override them
_CONFIG_CACHE = {}
def set_main_css(css_file):
''' Sets the main_css using debug css if needed. The css_file
must be of the form file.css '''
assert css_file.endswith('.css')
if config.debug and css_file == '/base/css/main.css':
new_css = '/base/css/main.debug.css'
else:
new_css = css_file
# FIXME we should check the css file exists
app_globals.main_css = str(new_css)
def set_global(key, value):
''' helper function for getting value from database or config file '''
model.set_system_info(key, value)
setattr(app_globals, get_globals_key(key), value)
# update the config
config[key] = value
log.info('config `%s` set to `%s`' % (key, value))
def delete_global(key):
model.delete_system_info(key)
log.info('config `%s` deleted' % (key))
def get_globals_key(key):
# create our globals key
# these can be specified in mappings or else we remove
# the `ckan.` part this is to keep the existing namings
# set the value
if key in mappings:
return mappings[key]
elif key.startswith('ckan.'):
return key[5:]
def reset():
''' set updatable values from config '''
def get_config_value(key, default=''):
value = model.get_system_info(key)
# we want to store the config the first time we get here so we can
# reset them if needed
config_value = config.get(key)
if key not in _CONFIG_CACHE:
_CONFIG_CACHE[key] = config_value
if value:
# update the config
config[key] = value
log.info('config `%s` set to `%s` from db' % (key, value))
else:
value = _CONFIG_CACHE[key]
if value:
log.info('config `%s` set to `%s` from config' % (key, value))
else:
value = default
setattr(app_globals, get_globals_key(key), value)
return value
# update the config settings in auto update
for key in auto_update:
get_config_value(key)
# cusom styling
main_css = get_config_value('ckan.main_css', '/base/css/main.css')
set_main_css(main_css)
# site_url_nice
site_url_nice = app_globals.site_url.replace('http://', '')
site_url_nice = site_url_nice.replace('www.', '')
app_globals.site_url_nice = site_url_nice
if app_globals.site_logo:
app_globals.header_class = 'header-image'
elif not app_globals.site_description:
app_globals.header_class = 'header-text-logo'
else:
app_globals.header_class = 'header-text-logo-tagline'
class _Globals(object):
''' Globals acts as a container for objects available throughout the
life of the application. '''
def __init__(self):
'''One instance of Globals is created during application
initialization and is available during requests via the
'app_globals' variable
'''
self.favicon = config.get('ckan.favicon', '/images/icons/ckan.ico')
facets = config.get('search.facets', 'groups tags res_format license')
self.facets = facets.split()
# has been setup in load_environment():
self.site_id = config.get('ckan.site_id')
self.template_head_end = config.get('ckan.template_head_end', '')
self.template_footer_end = config.get('ckan.template_footer_end', '')
# hide these extras fields on package read
package_hide_extras = config.get('package_hide_extras', '').split()
self.package_hide_extras = package_hide_extras
self.openid_enabled = asbool(config.get('openid_enabled', 'true'))
self.recaptcha_publickey = config.get('ckan.recaptcha.publickey', '')
self.recaptcha_privatekey = config.get('ckan.recaptcha.privatekey', '')
datasets_per_page = int(config.get('ckan.datasets_per_page', '20'))
self.datasets_per_page = datasets_per_page
app_globals = _Globals()
del _Globals