feat: fetch flow (#1068)

### What problem does this PR solve?
feat: fetch flow #918 
feat: save graph

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chat/chat-configuration-modal/index.tsx

@@ -8,11 +8,8 @@ import { IDialog } from '@/interfaces/database/chat';
 import { Divider, Flex, Form, Modal, Segmented, UploadFile } from 'antd';
 import { SegmentedValue } from 'antd/es/segmented';
 import camelCase from 'lodash/camelCase';
-import omit from 'lodash/omit';
 import { useEffect, useRef, useState } from 'react';
-import { variableEnabledFieldMap } from '../constants';
 import { IPromptConfigParameters } from '../interface';
-import { excludeUnEnabledVariables } from '../utils';
 import AssistantSetting from './assistant-setting';
 import { useFetchLlmModelOnVisible, useFetchModelId } from './hooks';
 import ModelSetting from './model-setting';
@@ -20,6 +17,7 @@ import PromptEngine from './prompt-engine';
 
 import { useTranslate } from '@/hooks/commonHooks';
 import { getBase64FromUploadFileList } from '@/utils/fileUtil';
+import { removeUselessFieldsFromValues } from '@/utils/form';
 import styles from './index.less';
 
 const layout = {
@@ -76,11 +74,10 @@ const ChatConfigurationModal = ({
 
   const handleOk = async () => {
     const values = await form.validateFields();
-    const nextValues: any = omit(values, [
-      ...Object.keys(variableEnabledFieldMap),
-      'parameters',
-      ...excludeUnEnabledVariables(values),
-    ]);
+    const nextValues: any = removeUselessFieldsFromValues(
+      values,
+      'llm_setting.',
+    );
     const emptyResponse = nextValues.prompt_config?.empty_response ?? '';
 
     const icon = await getBase64FromUploadFileList(values.icon);