feat: {{USER_ROLE}} prompt variable for the signed-in user's role (#33441)

Prompts could use the user's name and email but not their role, so role-aware system prompts needed a custom Filter function. Model system prompts, the user's own system prompt, saved prompts used with a slash command and chat requests through the API now replace {{USER_ROLE}} with the role, such as admin or user. Requested in #4765.

backend/open_webui/utils/task.py

@@ -73,6 +73,7 @@ async def prompt_template(template: str, user: Optional[Any] = None) -> str:
             USER_VARIABLES = {
                 'name': str(user.get('name')),
                 'email': str(user.get('email')),
+                'role': str(user.get('role')),
                 'location': str(user_info.get('location')),
                 'bio': str(user.get('bio')),
                 'gender': str(user.get('gender')),
@@ -96,6 +97,7 @@ async def prompt_template(template: str, user: Optional[Any] = None) -> str:
 
     template = template.replace('{{USER_NAME}}', USER_VARIABLES.get('name', 'Unknown'))
     template = template.replace('{{USER_EMAIL}}', USER_VARIABLES.get('email', 'Unknown'))
+    template = template.replace('{{USER_ROLE}}', USER_VARIABLES.get('role', 'Unknown'))
     template = template.replace('{{USER_BIO}}', USER_VARIABLES.get('bio', 'Unknown'))
     template = template.replace('{{USER_GENDER}}', USER_VARIABLES.get('gender', 'Unknown'))
     template = template.replace('{{USER_BIRTH_DATE}}', USER_VARIABLES.get('birth_date', 'Unknown'))

src/lib/components/channel/MessageInput.svelte

@@ -182,6 +182,14 @@
 			}
 		}
 
+		if (text.includes('{{USER_ROLE}}')) {
+			const role = sessionUser?.role || '';
+
+			if (role) {
+				text = text.replaceAll('{{USER_ROLE}}', role);
+			}
+		}
+
 		if (text.includes('{{USER_BIO}}')) {
 			const bio = sessionUser?.bio || '';
 

src/lib/components/chat/MessageInput.svelte

@@ -352,6 +352,14 @@
 			}
 		}
 
+		if (text.includes('{{USER_ROLE}}')) {
+			const role = sessionUser?.role || '';
+
+			if (role) {
+				text = text.replaceAll('{{USER_ROLE}}', role);
+			}
+		}
+
 		if (text.includes('{{USER_BIO}}')) {
 			const bio = sessionUser?.bio || '';