T50470: push websocket updates upon saving models

Author: knokko

binder/models.py

@@ -9,7 +9,7 @@
 from decimal import Decimal
 
 from django import forms
-from django.db import models
+from django.db import models, transaction
 from django.db.models import Value
 from django.db.models.fields.files import FieldFile, FileField
 from django.contrib.postgres.fields import CITextField, ArrayField, DateTimeRangeField as DTRangeField
@@ -28,6 +28,7 @@
 from binder.json import jsonloads
 
 from binder.exceptions import BinderRequestError
+from binder.websocket import trigger
 
 from . import history
 
@@ -614,8 +615,11 @@ class Meta:
 		ordering = ['pk']
 
 	def save(self, *args, **kwargs):
+		from binder.views import determine_model_resource_name
 		self.full_clean() # Never allow saving invalid models!
-		return super().save(*args, **kwargs)
+		result = super().save(*args, **kwargs)
+		transaction.on_commit(lambda: trigger(self.pk, [{ 'target': 'auto-updates/' + determine_model_resource_name(self.__class__.__name__)}]))
+		return result
 
 
 	# This can be overridden in your model when there are special

binder/views.py

@@ -342,6 +342,8 @@ def prefix_q_expression(value, prefix, antiprefix=None, model=None):
 			children.append((prefix + '__' + child[0], child[1]))
 	return Q(*children, _connector=value.connector, _negated=value.negated)
 
+def determine_model_resource_name(mn: str):
+	return ''.join((x + '_' if x.islower() and y.isupper() else x.lower() for x, y in zip(mn, mn[1:] + 'x')))
 
 class ModelView(View):
 	# Model this is a view for. Use None for views not tied to a particular model.
@@ -578,9 +580,7 @@ def get_field_filter(self, field_class, reset=False):
 	# Like model._meta.model_name, except it converts camelcase to underscores
 	@classmethod
 	def _model_name(cls):
-		mn = cls.model.__name__
-		return ''.join((x + '_' if x.islower() and y.isupper() else x.lower() for x, y in zip(mn, mn[1:] + 'x')))
-
+		return determine_model_resource_name(cls.model.__name__)
 
 
 	# Use this to instantiate other views you need. It returns a properly initialized view instance.