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97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
from django.contrib.messages import constants
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from django.contrib.messages.storage import default_storage
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__all__ = (
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'add_message', 'get_messages',
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'get_level', 'set_level',
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'debug', 'info', 'success', 'warning', 'error',
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'MessageFailure',
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)
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class MessageFailure(Exception):
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pass
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def add_message(request, level, message, extra_tags='', fail_silently=False):
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"""
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Attempt to add a message to the request using the 'messages' app.
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"""
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try:
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messages = request._messages
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except AttributeError:
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if not hasattr(request, 'META'):
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raise TypeError(
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"add_message() argument must be an HttpRequest object, not "
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"'%s'." % request.__class__.__name__
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)
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if not fail_silently:
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raise MessageFailure(
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'You cannot add messages without installing '
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'django.contrib.messages.middleware.MessageMiddleware'
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)
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else:
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return messages.add(level, message, extra_tags)
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def get_messages(request):
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"""
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Return the message storage on the request if it exists, otherwise return
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an empty list.
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"""
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return getattr(request, '_messages', [])
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def get_level(request):
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"""
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Return the minimum level of messages to be recorded.
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The default level is the ``MESSAGE_LEVEL`` setting. If this is not found,
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use the ``INFO`` level.
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"""
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storage = getattr(request, '_messages', default_storage(request))
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return storage.level
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def set_level(request, level):
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"""
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Set the minimum level of messages to be recorded, and return ``True`` if
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the level was recorded successfully.
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If set to ``None``, use the default level (see the get_level() function).
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"""
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if not hasattr(request, '_messages'):
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return False
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request._messages.level = level
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return True
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def debug(request, message, extra_tags='', fail_silently=False):
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"""Add a message with the ``DEBUG`` level."""
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add_message(request, constants.DEBUG, message, extra_tags=extra_tags,
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fail_silently=fail_silently)
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def info(request, message, extra_tags='', fail_silently=False):
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"""Add a message with the ``INFO`` level."""
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add_message(request, constants.INFO, message, extra_tags=extra_tags,
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fail_silently=fail_silently)
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def success(request, message, extra_tags='', fail_silently=False):
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"""Add a message with the ``SUCCESS`` level."""
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add_message(request, constants.SUCCESS, message, extra_tags=extra_tags,
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fail_silently=fail_silently)
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def warning(request, message, extra_tags='', fail_silently=False):
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"""Add a message with the ``WARNING`` level."""
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add_message(request, constants.WARNING, message, extra_tags=extra_tags,
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fail_silently=fail_silently)
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def error(request, message, extra_tags='', fail_silently=False):
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"""Add a message with the ``ERROR`` level."""
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add_message(request, constants.ERROR, message, extra_tags=extra_tags,
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fail_silently=fail_silently)
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