forked from CGM_Public/pretix_original
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
import django.dispatch
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from django.apps import apps
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from django.dispatch.dispatcher import NO_RECEIVERS
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class EventPluginSignal(django.dispatch.Signal):
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def send(self, sender, **named):
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"""
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Send signal from sender to all connected receivers that belong to
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plugins enabled for the given Event.
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sender is required to be an instance of ``tixlbase.models.Event``.
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"""
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responses = []
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if not self.receivers or self.sender_receivers_cache.get(sender) is NO_RECEIVERS:
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return responses
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for receiver in self._live_receivers(sender):
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# Find the Django application this belongs to
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searchpath = receiver.__module__
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app = None
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while "." in searchpath:
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try:
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if apps.is_installed(searchpath):
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app = apps.get_app_config(searchpath.split(".")[-1])
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except LookupError:
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pass
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searchpath, mod = searchpath.rsplit(".", 1)
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# Only fire receivers from active plugins
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if app.name in sender.get_plugins():
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response = receiver(signal=self, sender=sender, **named)
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responses.append((receiver, response))
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return responses
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determine_availability = EventPluginSignal(
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providing_args=["item", "variations", "context", "cache"]
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)
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