fix(backend): handle colon symbols in model id (#537)

Signed-off-by: MICHAEL DESMOND <mdesmond@us.ibm.com>

typescript/examples/backend/chatFromName.ts

@@ -0,0 +1,16 @@
+import "dotenv/config.js";
+import { createConsoleReader } from "examples/helpers/io.js";
+import { UserMessage } from "beeai-framework/backend/message";
+import { ChatModel } from "beeai-framework/backend/chat";
+
+const llm = await ChatModel.fromName("ollama:granite3.2:8b");
+
+const reader = createConsoleReader();
+
+for await (const { prompt } of reader) {
+  const response = await llm.create({
+    messages: [new UserMessage(prompt)],
+  });
+  reader.write(`LLM 🤖 (txt) : `, response.getTextContent());
+  reader.write(`LLM 🤖 (raw) : `, JSON.stringify(response.messages));
+}

typescript/src/backend/utils.ts

@@ -33,7 +33,9 @@ export function parseModel(name: string) {
   if (!name) {
     throw new ValueError("Neither 'provider' nor 'provider:model' was specified.");
   }
-  const [providerId, modelId] = name.split(":") as [ProviderName, string];
+  const [providerId, ...rest] = name.split(":") as [ProviderName, ...string[]];
+  const modelId = rest.join(":");
+
   const providerDef = findProviderDef(providerId);
   if (!providerDef) {
     throw new ValueError("Model does not contain provider name!");