Added input validation

Added document existence checks
Added reference field validation
Changed None to empty strings for reference fields

crm/api/doc.py

@@ -751,7 +751,12 @@ def getCounts(d, doctype):
 
 @frappe.whitelist()
 def get_linked_docs_of_document(doctype, docname):
+	try:
 		doc = frappe.get_doc(doctype, docname)
+	except frappe.DoesNotExistError:
+		
+		return []
+		
 	linked_docs = get_linked_docs(doc)
 	dynamic_linked_docs = get_dynamic_linked_docs(doc)
 
@@ -760,7 +765,16 @@ def get_linked_docs_of_document(doctype, docname):
 
 	docs_data = []
 	for doc in linked_docs:
+		
+		if not doc.get("reference_doctype") or not doc.get("reference_docname"):
+			continue
+			
+		try:
 			data = frappe.get_doc(doc["reference_doctype"], doc["reference_docname"])
+		except (frappe.DoesNotExistError, frappe.ValidationError):
+			
+			continue
+			
 		title = data.get("title")
 		if data.doctype == "CRM Call Log":
 			title = f"Call from {data.get('from')} to {data.get('to')}"
@@ -780,17 +794,31 @@ def get_linked_docs_of_document(doctype, docname):
 
 
 def remove_doc_link(doctype, docname):
+	
+	if not doctype or not docname:
+		return
+		
+	try:
 		linked_doc_data = frappe.get_doc(doctype, docname)
+		
 		linked_doc_data.update(
 			{
-			"reference_doctype": None,
+				"reference_doctype": "",
-			"reference_docname": None,
+				"reference_docname": "",
 			}
 		)
 		linked_doc_data.save(ignore_permissions=True)
+	except (frappe.DoesNotExistError, frappe.ValidationError):
+		
+		pass
 
 
 def remove_contact_link(doctype, docname):
+	
+	if not doctype or not docname:
+		return
+		
+	try:
 		linked_doc_data = frappe.get_doc(doctype, docname)
 		linked_doc_data.update(
 			{
@@ -799,6 +827,9 @@ def remove_contact_link(doctype, docname):
 			}
 		)
 		linked_doc_data.save(ignore_permissions=True)
+	except (frappe.DoesNotExistError, frappe.ValidationError):
+		
+		pass
 
 
 @frappe.whitelist()
@@ -807,6 +838,11 @@ def remove_linked_doc_reference(items, remove_contact=None, delete=False):
 		items = frappe.parse_json(items)
 
 	for item in items:
+		
+		if not item.get("doctype") or not item.get("docname"):
+			continue
+			
+		try:
 			if remove_contact:
 				remove_contact_link(item["doctype"], item["docname"])
 			else:
@@ -814,6 +850,9 @@ def remove_linked_doc_reference(items, remove_contact=None, delete=False):
 
 			if delete:
 				frappe.delete_doc(item["doctype"], item["docname"])
+		except (frappe.DoesNotExistError, frappe.ValidationError):
+			# Skip if document doesn't exist or has validation errors
+			continue
 
 	return "success"
 
@@ -822,10 +861,30 @@ def remove_linked_doc_reference(items, remove_contact=None, delete=False):
 def delete_bulk_docs(doctype, items, delete_linked=False):
 	from frappe.desk.reportview import delete_bulk
 
+	
+	if not doctype:
+		frappe.throw("Doctype is required")
+	
+	if not items:
+		frappe.throw("Items are required")
+		
 	items = frappe.parse_json(items)
+	if not isinstance(items, list):
+		frappe.throw("Items must be a list")
+		
 	for doc in items:
+		try:
+			
+			if not frappe.db.exists(doctype, doc):
+				frappe.log_error(f"Document {doctype} {doc} does not exist", "Bulk Delete Error")
+				continue
+				
 			linked_docs = get_linked_docs_of_document(doctype, doc)
 			for linked_doc in linked_docs:
+				
+				if not linked_doc.get("reference_doctype") or not linked_doc.get("reference_docname"):
+					continue
+				
 				remove_linked_doc_reference(
 					[
 						{
@@ -836,6 +895,9 @@ def delete_bulk_docs(doctype, items, delete_linked=False):
 					remove_contact=doctype == "Contact",
 					delete=delete_linked,
 				)
+		except Exception as e:
+			
+			frappe.log_error(f"Error processing linked docs for {doctype} {doc}: {str(e)}", "Bulk Delete Error")
 
 	if len(items) > 10:
 		frappe.enqueue("frappe.desk.reportview.delete_bulk", doctype=doctype, items=items)