Tut 29: fix for new ChatMessage - MERGE AFTER 2.9.0 (#375)

* simplify tut 29

* improvements

* progress

* rm unused code

* more progress

* small fix

Author: anakin87

tutorials/29_Serializing_Pipelines.ipynb

@@ -213,16 +213,17 @@
       "    init_parameters:\n",
       "      required_variables: null\n",
       "      template:\n",
-      "      - content: '\n",
+      "      - _content:\n",
+      "        - text: '\n",
       "\n",
       "          Please create a summary about the following topic:\n",
       "\n",
       "          {{ topic }}\n",
       "\n",
       "          '\n",
-      "        meta: {}\n",
-      "        name: null\n",
-      "        role: user\n",
+      "        _meta: {}\n",
+      "        _name: null\n",
+      "        _role: user\n",
       "      variables: null\n",
       "    type: haystack.components.builders.chat_prompt_builder.ChatPromptBuilder\n",
       "  llm:\n",
@@ -271,16 +272,17 @@
     "    init_parameters:\n",
     "      required_variables: null\n",
     "      template:\n",
-    "      - content: '\n",
+    "      - _content:\n",
+    "        - text: '\n",
     "\n",
-    "          Please create a summary about the following topic:\n",
+    "            Please create a summary about the following topic:\n",
     "\n",
-    "          {{ topic }}\n",
+    "            {{ topic }}\n",
     "\n",
-    "          '\n",
-    "        meta: {}\n",
-    "        name: null\n",
-    "        role: user\n",
+    "            '\n",
+    "        _meta: {}\n",
+    "        _name: null\n",
+    "        _role: user\n",
     "      variables: null\n",
     "    type: haystack.components.builders.chat_prompt_builder.ChatPromptBuilder\n",
     "  llm:\n",
@@ -334,10 +336,11 @@
     "  builder:\n",
     "    init_parameters:\n",
     "      template:\n",
-    "      - content: 'Please translate the following to French: \\n{{ sentence }}\\n'\n",
-    "        meta: {}\n",
-    "        name: null\n",
-    "        role: user\n",
+    "      - _content:\n",
+    "        - text: 'Please translate the following to French: \\n{{ sentence }}\\n'\n",
+    "        _meta: {}\n",
+    "        _name: null\n",
+    "        _role: user\n",
     "      variables: null\n",
     "    type: haystack.components.builders.chat_prompt_builder.ChatPromptBuilder\n",
     "  llm:\n",
@@ -431,7 +434,7 @@
    "source": [
     "## What's next\n",
     "\n",
-    "🎉 Congratulations! You've serialzed a pipeline into YAML, edited it and ran it again!\n",
+    "🎉 Congratulations! You've serialized a pipeline into YAML, edited it and ran it again!\n",
     "\n",
     "If you liked this tutorial, you may also enjoy:\n",
     "-  [Creating Your First QA Pipeline with Retrieval-Augmentation](https://haystack.deepset.ai/tutorials/27_first_rag_pipeline)\n",
@@ -458,7 +461,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.6"
+   "version": "3.10.12"
   }
  },
  "nbformat": 4,