ADD 添加jinja2模板渲染节点

__init__.py

@@ -1,4 +1,4 @@
-from .nodes.llm_api import LLMChat, LLMChatMultiModalImageUpload, LLMChatMultiModalImageTensor
+from .nodes.llm_api import LLMChat, LLMChatMultiModalImageUpload, LLMChatMultiModalImageTensor, Jinja2RenderTemplate
 from .nodes.compute_video_point import VideoStartPointDurationCompute
 from .nodes.cos import COSUpload, COSDownload
 from .nodes.face_detect import FaceDetect
@@ -67,7 +67,8 @@ NODE_CLASS_MAPPINGS = {
     "SaveImageWithOutput": SaveImageWithOutput,
     "LLMChat": LLMChat,
     "LLMChatMultiModalImageUpload": LLMChatMultiModalImageUpload,
-    "LLMChatMultiModalImageTensor": LLMChatMultiModalImageTensor
+    "LLMChatMultiModalImageTensor": LLMChatMultiModalImageTensor,
+    "Jinja2RenderTemplate": Jinja2RenderTemplate
 }
 
 # A dictionary that contains the friendly/humanly readable titles for the nodes
@@ -108,5 +109,6 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "SaveImageWithOutput": "保存图片(带输出)",
     "LLMChat": "LLM调用",
     "LLMChatMultiModalImageUpload": "多模态LLM调用-图片Path",
-    "LLMChatMultiModalImageTensor": "多模态LLM调用-图片Tensor"
+    "LLMChatMultiModalImageTensor": "多模态LLM调用-图片Tensor",
+    "Jinja2RenderTemplate": "Jinja2格式Prompt模板渲染"
 }

nodes/llm_api.py

@@ -1,6 +1,7 @@
 # LLM API 通过cloudflare gateway调用llm
 import base64
 import io
+import json
 import os
 import re
 from mimetypes import guess_type
@@ -10,6 +11,7 @@ import httpx
 import numpy as np
 import torch
 from PIL import Image
+from jinja2 import Template, StrictUndefined
 from retry import retry
 
 import folder_paths
@@ -231,3 +233,39 @@ class LLMChatMultiModalImageTensor:
                 raise Exception("llm调用失败 {}".format(e))
             return (content,)
         return _chat()
+
+class Jinja2RenderTemplate:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {
+            "required": {
+                "template": ("STRING", {"multiline": True}),
+                "kv_map": ("STRING", {"multiline": True}),
+            }
+        }
+
+    RETURN_TYPES = ("STRING",)
+    RETURN_NAMES = ("prompt",)
+    FUNCTION = "render_prompt"
+    CATEGORY = "不忘科技-自定义节点🚩/llm"
+
+    def render_prompt(self, template: str, kv_map: str) -> tuple:
+        """
+        使用Jinja2渲染prompt模板
+
+        参数:
+            template: 包含Jinja2标记的模板字符串
+            kv_map: 键值映射字典，用于提供模板渲染所需的变量
+
+        返回:
+            渲染后的字符串
+
+        异常:
+            如果模板中有未定义的变量，抛出jinja2.exceptions.UndefinedError
+        """
+        kv_map = json.loads(kv_map)
+        # 创建模板对象，设置为严格模式，未定义变量会抛出异常
+        template = Template(template, undefined=StrictUndefined)
+
+        # 渲染模板
+        return (template.render(kv_map),)