# -*- coding: utf-8 -*-
"""Module that provides various utility methods on the portal level."""
from Acquisition import aq_inner
from email.utils import formataddr
from email.utils import parseaddr
from logging import getLogger
from plone.api.exc import CannotGetPortalError
from plone.api.exc import InvalidParameterError
from plone.api.validation import required_parameters
from plone.app.layout.navigation.root import getNavigationRootObject
from Products.CMFCore.interfaces import ISiteRoot
from Products.CMFCore.utils import getToolByName
from Products.statusmessages.interfaces import IStatusMessage
from zope.component import getUtility
from zope.component import providedBy
from zope.component.hooks import getSite
from zope.globalrequest import getRequest
from zope.interface.interfaces import IInterface
import datetime as dtime
import pkg_resources
import six
logger = getLogger('plone.api.portal')
try:
pkg_resources.get_distribution('plone.registry')
from plone.registry.interfaces import IRegistry
except pkg_resources.DistributionNotFound:
logger.warning(
'plone.registry is not installed. get_registry_record and '
'set_registry_record will be unavailable.',
)
try:
from Products import PrintingMailHost
except ImportError:
PrintingMailHost = None
if not PrintingMailHost:
PRINTINGMAILHOST_ENABLED = False
elif (
PrintingMailHost.ENABLED is not None
and PrintingMailHost.ENABLED.lower() in PrintingMailHost.TRUISMS
):
PRINTINGMAILHOST_ENABLED = True
elif (
PrintingMailHost.ENABLED is None
and PrintingMailHost.DevelopmentMode is True
):
PRINTINGMAILHOST_ENABLED = True
else:
# PrintingMailHost only patches in debug mode.
# plone.api.env.debug_mode cannot be used here, because .env imports this
# file
from App.config import getConfiguration
PRINTINGMAILHOST_ENABLED = getConfiguration().debug_mode
MISSING = object()
[docs]def get():
"""Get the Plone portal object out of thin air.
Without the need to import fancy Interfaces and doing multi adapter
lookups.
:returns: Plone portal object
:rtype: Portal object
:Example: :ref:`portal_get_example`
"""
closest_site = getSite()
if closest_site is not None:
for potential_portal in closest_site.aq_chain:
if ISiteRoot in providedBy(potential_portal):
return potential_portal
raise CannotGetPortalError(
'Unable to get the portal object. More info on '
'http://docs.plone.org/develop/plone.api/docs/api/exceptions.html'
'#plone.api.exc.CannotGetPortalError',
)
[docs]@required_parameters('context')
def get_navigation_root(context=None):
"""Get the navigation root object for the context.
This traverses the path up and returns the nearest navigation root.
Useful for multi-lingual installations and sites with subsites.
:param context: [required] Context on which to get the navigation root.
:type context: context object
:returns: Navigation Root
:rtype: Portal object
:Example: :ref:`portal_get_navigation_root_example`
"""
context = aq_inner(context)
return getNavigationRootObject(context, get())
[docs]@required_parameters('recipient', 'subject', 'body')
def send_email(
sender=None,
recipient=None,
subject=None,
body=None,
immediate=False,
):
"""Send an email.
:param sender: Email sender, 'from' field. If not set, the portal default
will be used.
:type sender: string
:param recipient: [required] Email recipient, 'to' field.
:type recipient: string
:param subject: [required] Subject of the email.
:type subject: string
:param body: [required] Body text of the email
:type body: string or python's email object
:param immediate: Send immediate or queued at transaction commit time. When
sending immediate the mail might get sent out multiple time in case of
transaction aborts and retries.
:type body: boolean
:raises:
ValueError
:Example: :ref:`portal_send_email_example`
"""
portal = get()
if not PRINTINGMAILHOST_ENABLED:
from plone.api import content
ctrlOverview = content.get_view(
context=portal,
request=portal.REQUEST,
name='overview-controlpanel',
)
if ctrlOverview.mailhost_warning():
raise ValueError('MailHost is not configured.')
try:
encoding = get_registry_record('plone.email_charset')
except InvalidParameterError:
encoding = portal.getProperty('email_charset', 'utf-8')
if not sender:
try:
from_address = get_registry_record('plone.email_from_address')
from_name = get_registry_record('plone.email_from_name')
except InvalidParameterError:
# Before Plone 5.0b2 these were stored in portal_properties
from_address = portal.getProperty('email_from_address', '')
from_name = portal.getProperty('email_from_name', '')
sender = formataddr((from_name, from_address))
if parseaddr(sender)[1] != from_address:
# formataddr probably got confused by special characters.
sender = from_address
# If the mail headers are not properly encoded we need to extract
# them and let MailHost manage the encoding.
if isinstance(body, six.text_type):
body = body.encode(encoding)
host = get_tool('MailHost')
host.send(
body,
recipient,
sender,
subject=subject,
charset=encoding,
immediate=immediate,
)
[docs]@required_parameters('datetime')
def get_localized_time(datetime=None, long_format=False, time_only=False):
"""Display a date/time in a user-friendly way.
It should be localized to the user's preferred language.
Note that you can specify both long_format and time_only as True
(or any other value that can be converted to a boolean True
value), but time_only then wins: the long_format value is ignored.
You can also use datetime.datetime or datetime.date instead of Plone's
DateTime. In case of datetime.datetime everything works the same, in
case of datetime.date the long_format parameter is ignored and on time_only
an empty string is returned.
:param datetime: [required] Message to show.
:type datetime: DateTime, datetime or date
:param long_format: When true, show long date format. When false
(default), show the short date format.
:type long_format: boolean
:param time_only: When true, show only the time, when false
(default), show the date.
:type time_only: boolean
:returns: Localized time
:rtype: string
:raises:
ValueError
:Example: :ref:`portal_get_localized_time_example`
"""
tool = get_tool(name='translation_service')
request = getRequest()
# isinstance won't work because of date -> datetime inheritance
if type(datetime) is dtime.date:
if time_only:
return ''
datetime = dtime.datetime(datetime.year, datetime.month, datetime.day)
long_format = False
return tool.ulocalized_time(
datetime,
long_format,
time_only,
domain='plonelocales',
request=request,
)
[docs]@required_parameters('message', 'request')
def show_message(message=None, request=None, type='info'):
"""Display a status message.
:param message: [required] Message to show.
:type message: string
:param request: [required] Request.
:type request: HTTPRequest
:param type: Message type. Possible values: 'info', 'warn', 'error'
:type type: string
:raises:
ValueError
:Example: :ref:`portal_show_message_example`
"""
IStatusMessage(request).add(message, type=type)
[docs]@required_parameters('name')
def get_registry_record(name=None, interface=None, default=MISSING):
"""Get a record value from ``plone.app.registry``
:param name: [required] Name
:type name: string
:param interface: interface whose attributes are plone.app.registry
settings
:type interface: zope.interface.Interface
:param default: The value returned if the record is not found
:type default: anything
:returns: Registry record value
:rtype: plone.app.registry registry record
:Example: :ref:`portal_get_registry_record_example`
"""
if not isinstance(name, str):
raise InvalidParameterError(u"The 'name' parameter has to be a string")
if interface is not None and not IInterface.providedBy(interface):
raise InvalidParameterError(
u'The interface parameter has to derive from '
u'zope.interface.Interface',
)
registry = getUtility(IRegistry)
if interface is not None:
records = registry.forInterface(interface, check=False)
_marker = object()
if getattr(records, name, _marker) != _marker:
return registry['{0}.{1}'.format(interface.__identifier__, name)]
if default is not MISSING:
return default
# Show all records on the interface.
records = [key for key in interface.names()]
msg = (
'Cannot find a record with name "{name}"'
' on interface {identifier}.\n'
'Did you mean?\n'
'{records}'.format(
name=name,
identifier=interface.__identifier__,
records='\n'.join(records),
)
)
raise InvalidParameterError(msg)
if name in registry:
return registry[name]
if default is not MISSING:
return default
# Show all records that 'look like' name.
# We don't dump the whole list, because it 1500+ items.
msg = (
"Cannot find a record with name '{name}'".format(name=name)
)
records = [key for key in registry.records.keys() if name in key]
if records:
msg = (
'{message}\n'
'Did you mean?:\n'
'{records}'.format(message=msg, records='\n'.join(records))
)
raise InvalidParameterError(msg)
[docs]@required_parameters('name', 'value')
def set_registry_record(name=None, value=None, interface=None):
"""Set a record value in the ``plone.app.registry``
:param name: [required] Name of the record
:type name: string
:param value: [required] Value to set
:type value: python primitive
:param interface: interface whose attributes are plone.app.registry
settings
:type interface: zope.interface.Interface
:Example: :ref:`portal_set_registry_record_example`
"""
if not isinstance(name, str):
raise InvalidParameterError(u"The parameter 'name' has to be a string")
if interface is not None and not IInterface.providedBy(interface):
raise InvalidParameterError(
u'The interface parameter has to derive from '
u'zope.interface.Interface',
)
registry = getUtility(IRegistry)
if interface is not None:
# confirm that the name exists on the interface
get_registry_record(name=name, interface=interface)
from zope.schema._bootstrapinterfaces import WrongType
try:
registry[interface.__identifier__ + '.' + name] = value
except WrongType:
field_type = None
for field in interface.namesAndDescriptions():
if field[0] == name:
field_type = field[1]
break
raise InvalidParameterError(
u'The value parameter for the field {name} needs to be '
u'{of_class} instead of {of_type}'.format(
name=name,
of_class=str(field_type.__class__),
of_type=type(value),
),
)
elif isinstance(name, str):
# confirm that the record exists before setting the value
get_registry_record(name)
registry[name] = value
[docs]def get_default_language():
"""Return the default language.
:returns: language identifier
:rtype: string
:Example: :ref:`portal_get_default_language_example`
"""
try:
# Plone 5.2+
from plone.i18n.interfaces import ILanguageSchema
except ImportError: # pragma: no cover
try:
# Plone 5.0/5.1
from Products.CMFPlone.interfaces import ILanguageSchema
except ImportError:
# Plone 4.3
portal = get()
return portal.portal_properties.site_properties.getProperty(
'default_language', None,
)
registry = getUtility(IRegistry)
settings = registry.forInterface(ILanguageSchema, prefix='plone')
return settings.default_language
[docs]def get_current_language(context=None):
"""Return the current negotiated language.
:param context: context object
:type context: object
:returns: language identifier
:rtype: string
:Example: :ref:`portal_get_current_language_example`
"""
request = getRequest()
return request.get('LANGUAGE', None) or \
(context and aq_inner(context).Language()) \
or get_default_language()
[docs]def translate(msgid, domain='plone', lang=None):
"""Translate a message into a given language.
Default to current negotiated language if no target language specified.
:param msgid: [required] message to translate
:type msgid: string
:param domain: i18n domain to use
:type domain: string
:param lang: target language
:type lang: string
:returns: translated message
:rtype: six.text_type
:Example: :ref:`portal_translate_example`
"""
translation_service = get_tool('translation_service')
query = {
'msgid': msgid,
'domain': domain,
'target_language': lang,
}
if lang is None:
# Pass the request, so zope.i18n.translate can negotiate the language.
query['context'] = getRequest()
return translation_service.utranslate(**query)
