refactor(minor): Use ORM instead of raw delete queries

Modified query building for "IN" statements, as well as older condition
builders to use frappe.db.delete

frappe/defaults.py

@@ -154,29 +154,23 @@ def clear_default(key=None, value=None, parent=None, name=None, parenttype=None)
 	:param name: Default ID.
 	:param parenttype: Clear defaults table for a particular type e.g. **User**.
 	"""
-	conditions = []
-	values = []
+	filters = {}
 
 	if name:
-		conditions.append("name=%s")
-		values.append(name)
+		filters.update({"name": name})
 
 	else:
 		if key:
-			conditions.append("defkey=%s")
-			values.append(key)
+			filters.update({"defkey": key})
 
 		if value:
-			conditions.append("defvalue=%s")
-			values.append(value)
+			filters.update({"defvalue": value})
 
 		if parent:
-			conditions.append("parent=%s")
-			values.append(parent)
+			filters.update({"parent": parent})
 
 		if parenttype:
-			conditions.append("parenttype=%s")
-			values.append(parenttype)
+			filters.update({"parenttype": parenttype})
 
 	if parent:
 		clear_defaults_cache(parent)
@@ -184,11 +178,10 @@ def clear_default(key=None, value=None, parent=None, name=None, parenttype=None)
 		clear_defaults_cache("__default")
 		clear_defaults_cache("__global")
 
-	if not conditions:
+	if not filters:
 		raise Exception("[clear_default] No key specified.")
 
-	frappe.db.sql("""delete from tabDefaultValue where {0}""".format(" and ".join(conditions)),
-		tuple(values))
+	frappe.db.delete("DefaultValue", filters)
 
 	_clear_cache(parent)
 

frappe/desk/doctype/todo/todo.py

@@ -39,11 +39,7 @@ class ToDo(Document):
 		self.update_in_reference()
 
 	def on_trash(self):
-		# unlink todo from linked comments
-		frappe.db.delete("Communication Link", {
-			"link_doctype": self.doctype,
-			"link_name": self.name
-		})
+		self.delete_communication_links()
 		self.update_in_reference()
 
 	def add_assign_comment(self, text, comment_type):
@@ -52,6 +48,13 @@ class ToDo(Document):
 
 		frappe.get_doc(self.reference_type, self.reference_name).add_comment(comment_type, text)
 
+	def delete_communication_links(self):
+		# unlink todo from linked comments
+		return frappe.db.delete("Communication Link", {
+			"link_doctype": self.doctype,
+			"link_name": self.name
+		})
+
 	def update_in_reference(self):
 		if not (self.reference_type and self.reference_name):
 			return

frappe/email/queue.py

@@ -173,14 +173,8 @@ def clear_outbox(days=None):
 		WHERE `priority`=0 AND `modified` < (NOW() - INTERVAL '{0}' DAY)""".format(days))
 
 	if email_queues:
-		# TODO: email_queues IN frappe.db.sql
-		frappe.db.sql("""DELETE FROM `tabEmail Queue` WHERE `name` IN ({0})""".format(
-			','.join(['%s']*len(email_queues)
-		)), tuple(email_queues))
-
-		frappe.db.sql("""DELETE FROM `tabEmail Queue Recipient` WHERE `parent` IN ({0})""".format(
-			','.join(['%s']*len(email_queues)
-		)), tuple(email_queues))
+		frappe.db.delete("Email Queue", {"name": ("in", email_queues)})
+		frappe.db.delete("Email Queue Recipient", {"parent": ("in", email_queues)})
 
 def set_expiry_for_email_queue():
 	''' Mark emails as expire that has not sent for 7 days.

frappe/patches/v12_0/set_primary_key_in_series.py

@@ -2,7 +2,8 @@ import frappe
 
 def execute():
 	#if current = 0, simply delete the key as it'll be recreated on first entry
-	frappe.db.sql('delete from `tabSeries` where current = 0')
+	frappe.db.delete("Series", {"current": 0})
+
 	duplicate_keys = frappe.db.sql('''
 		SELECT name, max(current) as current
 		from