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"""Postfix relay domains extension forms.""" from django.db.models.signals import pre_save, post_save from modoboa.lib.form_utils import WizardStep from modoboa.transport import forms as tr_forms, models as tr_models class DisableSignals(object): """Context manager to disable signals.""" def __init__(self): self.stashed_signals = {} self.disabled_signals = [pre_save, post_save] def __enter__(self): for signal in self.disabled_signals: self.disconnect(signal) def __exit__(self, exc_type, exc_val, exc_tb): for signal in list(self.stashed_signals.keys()): self.reconnect(signal) def disconnect(self, signal): self.stashed_signals[signal] = signal.receivers signal.receivers = [] def reconnect(self, signal): signal.receivers = self.stashed_signals.get(signal, []) del self.stashed_signals[signal] class RelayDomainWizardStep(WizardStep): """A custom wizard step.""" def check_access(self, wizard): """Check if domain is a relay domain.""" return wizard.steps[0].form.cleaned_data["type"] == "relaydomain" class RelayDomainFormGeneral(tr_forms.TransportForm): """A form to display transport.""" class Meta: model = tr_models.Transport exclude = [ "creation", "pattern", "next_hop", "enabled", "_settings" ] def save(self, *args, **kwargs): """Custom save method.""" domain = kwargs.pop("domain", None) if domain.type != "relaydomain": # We don't want to recreate the transport we just deleted it # (post_save signal). return None instance = super(RelayDomainFormGeneral, self).save() instance.pattern = domain.name instance.save() if not domain.transport: domain.transport = instance with DisableSignals(): domain.save(update_fields=["transport"]) return instance