实验室预约

展示高级编排操作数据库的能力

实验室预约 - 图1实验室预约 - 图2
实验室预约 - 图3实验室预约 - 图4

本示例演示了利用工具调用，自动选择调用知识库搜索实验室相关内容，或调用 HTTP 模块实现数据库的 CRUD 操作。

以一个实验室预约为例，用户可以通过对话系统预约、取消、修改预约和查询预约记录。

1. 全局变量使用

通过设计一个全局变量，让用户输入姓名，模拟用户身份信息。实际使用过程中，通常是直接通过嵌入 Token 来标记用户身份。

2. 工具调用

实验室预约 - 图5

背景知识中，引导模型调用工具去执行不通的操作。

🤗

Tips: 这里需要增加适当的上下文，方便模型结合历史纪录进行判断和决策~

3. HTTP 模块

实验室预约 - 图6

HTTP模块中，需要设置 3 个工具参数：

  • 预约行为：可取 get, put, post, delete 四个值，分别对应查询、修改、新增、删除操作。当然，你也可以写4个HTTP模块，来分别处理。
  • labname: 实验室名。非必填，因为查询和删除时候，不需要。
  • time: 预约时间。

总结

  1. 工具调用模块是非常强大的功能，可以在一定程度上替代问题分类和内容提取。
  2. 通过工具模块，动态的调用不同的工具，可以将复杂业务解耦。

附件

编排配置

可直接复制，导入到 FastGPT 中。

编排配置

  1. {
  2.   "nodes": [
  3.     {
  4.       "nodeId": "userChatInput",
  5.       "name": "流程开始",
  6.       "intro": "当用户发送一个内容后，流程将会从这个模块开始执行。",
  7.       "avatar": "/imgs/workflow/userChatInput.svg",
  8.       "flowNodeType": "workflowStart",
  9.       "position": {
  10.         "x": 309.7143912167367,
  11.         "y": 1501.2761754220846
  12.       },
  13.       "inputs": [
  14.         {
  15.           "key": "userChatInput",
  16.           "renderTypeList": [
  17.             "reference",
  18.             "textarea"
  19.           ],
  20.           "valueType": "string",
  21.           "label": "问题输入",
  22.           "required": true,
  23.           "toolDescription": "用户问题",
  24.           "type": "systemInput",
  25.           "showTargetInApp": false,
  26.           "showTargetInPlugin": false,
  27.           "connected": false,
  28.           "selectedTypeIndex": 0,
  29.           "value": [
  30.             "userChatInput",
  31.             "userChatInput"
  32.           ]
  33.         }
  34.       ],
  35.       "outputs": [
  36.         {
  37.           "id": "userChatInput",
  38.           "type": "static",
  39.           "key": "userChatInput",
  40.           "valueType": "string",
  41.           "label": "core.module.input.label.user question"
  42.         }
  43.       ]
  44.     },
  45.     {
  46.       "nodeId": "eg5upi",
  47.       "name": "指定回复",
  48.       "intro": "该模块可以直接回复一段指定的内容。常用于引导、提示。非字符串内容传入时，会转成字符串进行输出。",
  49.       "avatar": "/imgs/workflow/reply.png",
  50.       "flowNodeType": "answerNode",
  51.       "position": {
  52.         "x": 1962.729630445213,
  53.         "y": 2295.9791334948304
  54.       },
  55.       "inputs": [
  56.         {
  57.           "key": "text",
  58.           "renderTypeList": [
  59.             "textarea",
  60.             "reference"
  61.           ],
  62.           "valueType": "any",
  63.           "label": "core.module.input.label.Response content",
  64.           "description": "core.module.input.description.Response content",
  65.           "placeholder": "core.module.input.description.Response content",
  66.           "type": "textarea",
  67.           "showTargetInApp": true,
  68.           "showTargetInPlugin": true,
  69.           "connected": true,
  70.           "selectedTypeIndex": 1,
  71.           "value": [
  72.             "40clf3",
  73.             "result"
  74.           ]
  75.         }
  76.       ],
  77.       "outputs": []
  78.     },
  79.     {
  80.       "nodeId": "kge59i",
  81.       "name": "用户引导",
  82.       "intro": "可以配置应用的系统参数。",
  83.       "avatar": "/imgs/workflow/userGuide.png",
  84.       "flowNodeType": "userGuide",
  85.       "position": {
  86.         "x": -327.218389965887,
  87.         "y": 1504.8056414948464
  88.       },
  89.       "inputs": [
  90.         {
  91.           "key": "welcomeText",
  92.           "renderTypeList": [
  93.             "hidden"
  94.           ],
  95.           "valueType": "string",
  96.           "label": "core.app.Welcome Text",
  97.           "type": "hidden",
  98.           "showTargetInApp": false,
  99.           "showTargetInPlugin": false,
  100.           "value": "你好，我是实验室助手，请问有什么可以帮助你的么？如需预约或修改预约实验室，请提供姓名、时间和实验室名称。\n[实验室介绍]\n[开放时间]\n[预约]",
  101.           "connected": false,
  102.           "selectedTypeIndex": 0
  103.         },
  104.         {
  105.           "key": "variables",
  106.           "renderTypeList": [
  107.             "hidden"
  108.           ],
  109.           "valueType": "any",
  110.           "label": "core.module.Variable",
  111.           "value": [
  112.             {
  113.               "id": "gt9b23",
  114.               "key": "name",
  115.               "label": "name",
  116.               "type": "input",
  117.               "required": true,
  118.               "maxLen": 50,
  119.               "enums": [
  120.                 {
  121.                   "value": ""
  122.                 }
  123.               ]
  124.             }
  125.           ],
  126.           "type": "hidden",
  127.           "showTargetInApp": false,
  128.           "showTargetInPlugin": false,
  129.           "connected": false,
  130.           "selectedTypeIndex": 0
  131.         },
  132.         {
  133.           "key": "questionGuide",
  134.           "valueType": "boolean",
  135.           "renderTypeList": [
  136.             "hidden"
  137.           ],
  138.           "label": "",
  139.           "type": "switch",
  140.           "showTargetInApp": false,
  141.           "showTargetInPlugin": false,
  142.           "value": false,
  143.           "connected": false,
  144.           "selectedTypeIndex": 0
  145.         },
  146.         {
  147.           "key": "tts",
  148.           "renderTypeList": [
  149.             "hidden"
  150.           ],
  151.           "valueType": "any",
  152.           "label": "",
  153.           "type": "hidden",
  154.           "showTargetInApp": false,
  155.           "showTargetInPlugin": false,
  156.           "value": {
  157.             "type": "model",
  158.             "model": "tts-1",
  159.             "voice": "alloy"
  160.           },
  161.           "connected": false,
  162.           "selectedTypeIndex": 0
  163.         },
  164.         {
  165.           "key": "whisper",
  166.           "renderTypeList": [
  167.             "hidden"
  168.           ],
  169.           "valueType": "any",
  170.           "label": "",
  171.           "type": "hidden",
  172.           "showTargetInApp": false,
  173.           "showTargetInPlugin": false,
  174.           "connected": false,
  175.           "selectedTypeIndex": 0
  176.         },
  177.         {
  178.           "key": "scheduleTrigger",
  179.           "renderTypeList": [
  180.             "hidden"
  181.           ],
  182.           "valueType": "any",
  183.           "label": "",
  184.           "value": null
  185.         }
  186.       ],
  187.       "outputs": []
  188.     },
  189.     {
  190.       "nodeId": "40clf3",
  191.       "name": "HTTP请求",
  192.       "intro": "可以发出一个 HTTP 请求，实现更为复杂的操作（联网搜索、数据库查询等）",
  193.       "avatar": "/imgs/workflow/http.png",
  194.       "flowNodeType": "httpRequest468",
  195.       "showStatus": true,
  196.       "position": {
  197.         "x": 1118.6532653446993,
  198.         "y": 1955.886106913907
  199.       },
  200.       "inputs": [
  201.         {
  202.           "key": "system_httpMethod",
  203.           "renderTypeList": [
  204.             "custom"
  205.           ],
  206.           "valueType": "string",
  207.           "label": "",
  208.           "value": "POST",
  209.           "required": true,
  210.           "type": "custom",
  211.           "showTargetInApp": false,
  212.           "showTargetInPlugin": false,
  213.           "connected": false,
  214.           "selectedTypeIndex": 0
  215.         },
  216.         {
  217.           "valueType": "string",
  218.           "renderTypeList": [
  219.             "reference"
  220.           ],
  221.           "key": "action",
  222.           "label": "action",
  223.           "toolDescription": "预约行为，一共四种：\nget - 查询预约情况\nput - 更新预约\npost - 新增预约\ndelete - 删除预约",
  224.           "required": true,
  225.           "canEdit": true,
  226.           "editField": {
  227.             "key": true,
  228.             "description": true
  229.           }
  230.         },
  231.         {
  232.           "valueType": "string",
  233.           "renderTypeList": [
  234.             "reference"
  235.           ],
  236.           "key": "labname",
  237.           "label": "labname",
  238.           "toolDescription": "实验室名称",
  239.           "required": false,
  240.           "canEdit": true,
  241.           "editField": {
  242.             "key": true,
  243.             "description": true
  244.           }
  245.         },
  246.         {
  247.           "valueType": "string",
  248.           "renderTypeList": [
  249.             "reference"
  250.           ],
  251.           "key": "time",
  252.           "label": "time",
  253.           "toolDescription": "预约时间，按 YYYY/MM/DD HH:mm 格式返回",
  254.           "required": false,
  255.           "canEdit": true,
  256.           "editField": {
  257.             "key": true,
  258.             "description": true
  259.           }
  260.         },
  261.         {
  262.           "key": "system_httpReqUrl",
  263.           "renderTypeList": [
  264.             "hidden"
  265.           ],
  266.           "valueType": "string",
  267.           "label": "",
  268.           "description": "core.module.input.description.Http Request Url",
  269.           "placeholder": "https://api.ai.com/getInventory",
  270.           "required": false,
  271.           "type": "hidden",
  272.           "showTargetInApp": false,
  273.           "showTargetInPlugin": false,
  274.           "value": "https://d8dns0.laf.dev/appointment-lab",
  275.           "connected": false,
  276.           "selectedTypeIndex": 0
  277.         },
  278.         {
  279.           "key": "system_httpHeader",
  280.           "renderTypeList": [
  281.             "custom"
  282.           ],
  283.           "valueType": "any",
  284.           "value": [],
  285.           "label": "",
  286.           "description": "core.module.input.description.Http Request Header",
  287.           "placeholder": "core.module.input.description.Http Request Header",
  288.           "required": false,
  289.           "type": "custom",
  290.           "showTargetInApp": false,
  291.           "showTargetInPlugin": false,
  292.           "connected": false,
  293.           "selectedTypeIndex": 0
  294.         },
  295.         {
  296.           "key": "system_httpParams",
  297.           "renderTypeList": [
  298.             "hidden"
  299.           ],
  300.           "valueType": "any",
  301.           "value": [],
  302.           "label": "",
  303.           "required": false,
  304.           "type": "hidden",
  305.           "showTargetInApp": false,
  306.           "showTargetInPlugin": false,
  307.           "connected": false,
  308.           "selectedTypeIndex": 0
  309.         },
  310.         {
  311.           "key": "system_httpJsonBody",
  312.           "renderTypeList": [
  313.             "hidden"
  314.           ],
  315.           "valueType": "any",
  316.           "value": "{\r\n  \"name\": \"{{name}}\",\r\n  \"time\": \"{{time}}\",\r\n  \"labname\": \"{{labname}}\",\r\n  \"action\": \"{{action}}\"\r\n}",
  317.           "label": "",
  318.           "required": false,
  319.           "type": "hidden",
  320.           "showTargetInApp": false,
  321.           "showTargetInPlugin": false,
  322.           "connected": false,
  323.           "selectedTypeIndex": 0
  324.         },
  325.         {
  326.           "key": "system_addInputParam",
  327.           "renderTypeList": [
  328.             "addInputParam"
  329.           ],
  330.           "valueType": "dynamic",
  331.           "label": "",
  332.           "required": false,
  333.           "description": "core.module.input.description.HTTP Dynamic Input",
  334.           "editField": {
  335.             "key": true,
  336.             "valueType": true
  337.           }
  338.         }
  339.       ],
  340.       "outputs": [
  341.         {
  342.           "id": "system_addOutputParam",
  343.           "type": "dynamic",
  344.           "key": "system_addOutputParam",
  345.           "valueType": "dynamic",
  346.           "label": "",
  347.           "editField": {
  348.             "key": true,
  349.             "valueType": true
  350.           }
  351.         },
  352.         {
  353.           "id": "result",
  354.           "type": "static",
  355.           "key": "result",
  356.           "valueType": "string",
  357.           "label": "result",
  358.           "description": "result",
  359.           "canEdit": true,
  360.           "editField": {
  361.             "key": true,
  362.             "name": true,
  363.             "description": true,
  364.             "dataType": true
  365.           }
  366.         },
  367.         {
  368.           "id": "httpRawResponse",
  369.           "type": "static",
  370.           "key": "httpRawResponse",
  371.           "valueType": "any",
  372.           "label": "原始响应",
  373.           "description": "HTTP请求的原始响应。只能接受字符串或JSON类型响应数据。"
  374.         }
  375.       ]
  376.     },
  377.     {
  378.       "nodeId": "fYxwWym8flYL",
  379.       "name": "工具调用（实验）",
  380.       "intro": "通过AI模型自动选择一个或多个功能块进行调用，也可以对插件进行调用。",
  381.       "avatar": "/imgs/workflow/tool.svg",
  382.       "flowNodeType": "tools",
  383.       "showStatus": true,
  384.       "position": {
  385.         "x": 933.9342354248961,
  386.         "y": 1229.3563445150553
  387.       },
  388.       "inputs": [
  389.         {
  390.           "key": "model",
  391.           "renderTypeList": [
  392.             "settingLLMModel",
  393.             "reference"
  394.           ],
  395.           "label": "core.module.input.label.aiModel",
  396.           "valueType": "string",
  397.           "llmModelType": "all",
  398.           "value": "gpt-3.5-turbo"
  399.         },
  400.         {
  401.           "key": "temperature",
  402.           "renderTypeList": [
  403.             "hidden"
  404.           ],
  405.           "label": "",
  406.           "value": 0,
  407.           "valueType": "number",
  408.           "min": 0,
  409.           "max": 10,
  410.           "step": 1
  411.         },
  412.         {
  413.           "key": "maxToken",
  414.           "renderTypeList": [
  415.             "hidden"
  416.           ],
  417.           "label": "",
  418.           "value": 2000,
  419.           "valueType": "number",
  420.           "min": 100,
  421.           "max": 4000,
  422.           "step": 50
  423.         },
  424.         {
  425.           "key": "systemPrompt",
  426.           "renderTypeList": [
  427.             "textarea",
  428.             "reference"
  429.           ],
  430.           "max": 3000,
  431.           "valueType": "string",
  432.           "label": "core.ai.Prompt",
  433.           "description": "core.app.tip.chatNodeSystemPromptTip",
  434.           "placeholder": "core.app.tip.chatNodeSystemPromptTip",
  435.           "value": "当前时间为: {{cTime}}\n你是实验室助手，用户可能会询问实验室相关介绍或预约实验室。\n请选择合适的工具去帮助他们。"
  436.         },
  437.         {
  438.           "key": "history",
  439.           "renderTypeList": [
  440.             "numberInput",
  441.             "reference"
  442.           ],
  443.           "valueType": "chatHistory",
  444.           "label": "core.module.input.label.chat history",
  445.           "required": true,
  446.           "min": 0,
  447.           "max": 30,
  448.           "value": 6
  449.         },
  450.         {
  451.           "key": "userChatInput",
  452.           "renderTypeList": [
  453.             "reference",
  454.             "textarea"
  455.           ],
  456.           "valueType": "string",
  457.           "label": "用户问题",
  458.           "required": true,
  459.           "value": [
  460.             "userChatInput",
  461.             "userChatInput"
  462.           ]
  463.         }
  464.       ],
  465.       "outputs": []
  466.     },
  467.     {
  468.       "nodeId": "JSSQtDgwmmbE",
  469.       "name": "知识库搜索",
  470.       "intro": "调用“语义检索”和“全文检索”能力，从“知识库”中查找实验室介绍和使用规则等信息。",
  471.       "avatar": "/imgs/workflow/db.png",
  472.       "flowNodeType": "datasetSearchNode",
  473.       "showStatus": true,
  474.       "position": {
  475.         "x": 447.0795498711184,
  476.         "y": 1971.5311041711186
  477.       },
  478.       "inputs": [
  479.         {
  480.           "key": "datasets",
  481.           "renderTypeList": [
  482.             "selectDataset",
  483.             "reference"
  484.           ],
  485.           "label": "core.module.input.label.Select dataset",
  486.           "value": [],
  487.           "valueType": "selectDataset",
  488.           "list": [],
  489.           "required": true
  490.         },
  491.         {
  492.           "key": "similarity",
  493.           "renderTypeList": [
  494.             "selectDatasetParamsModal"
  495.           ],
  496.           "label": "",
  497.           "value": 0.4,
  498.           "valueType": "number"
  499.         },
  500.         {
  501.           "key": "limit",
  502.           "renderTypeList": [
  503.             "hidden"
  504.           ],
  505.           "label": "",
  506.           "value": 1500,
  507.           "valueType": "number"
  508.         },
  509.         {
  510.           "key": "searchMode",
  511.           "renderTypeList": [
  512.             "hidden"
  513.           ],
  514.           "label": "",
  515.           "valueType": "string",
  516.           "value": "embedding"
  517.         },
  518.         {
  519.           "key": "usingReRank",
  520.           "renderTypeList": [
  521.             "hidden"
  522.           ],
  523.           "label": "",
  524.           "valueType": "boolean",
  525.           "value": false
  526.         },
  527.         {
  528.           "key": "datasetSearchUsingExtensionQuery",
  529.           "renderTypeList": [
  530.             "hidden"
  531.           ],
  532.           "label": "",
  533.           "valueType": "boolean",
  534.           "value": false
  535.         },
  536.         {
  537.           "key": "datasetSearchExtensionModel",
  538.           "renderTypeList": [
  539.             "hidden"
  540.           ],
  541.           "label": "",
  542.           "valueType": "string",
  543.           "value": "gpt-3.5-turbo"
  544.         },
  545.         {
  546.           "key": "datasetSearchExtensionBg",
  547.           "renderTypeList": [
  548.             "hidden"
  549.           ],
  550.           "label": "",
  551.           "valueType": "string",
  552.           "value": ""
  553.         },
  554.         {
  555.           "key": "userChatInput",
  556.           "renderTypeList": [
  557.             "reference",
  558.             "textarea"
  559.           ],
  560.           "valueType": "string",
  561.           "label": "用户问题",
  562.           "required": true,
  563.           "toolDescription": "需要检索的内容"
  564.         }
  565.       ],
  566.       "outputs": [
  567.         {
  568.           "id": "quoteQA",
  569.           "key": "quoteQA",
  570.           "label": "core.module.Dataset quote.label",
  571.           "description": "特殊数组格式，搜索结果为空时，返回空数组。",
  572.           "type": "static",
  573.           "valueType": "datasetQuote"
  574.         }
  575.       ]
  576.     },
  577.     {
  578.       "nodeId": "IdntVQiTopHT",
  579.       "name": "工具调用终止",
  580.       "intro": "该模块需配置工具调用使用。当该模块被执行时，本次工具调用将会强制结束，并且不再调用AI针对工具调用结果回答问题。",
  581.       "avatar": "/imgs/workflow/toolStop.svg",
  582.       "flowNodeType": "stopTool",
  583.       "position": {
  584.         "x": 1969.73331750207,
  585.         "y": 2650.0258908119413
  586.       },
  587.       "inputs": [],
  588.       "outputs": []
  589.     }
  590.   ],
  591.   "edges": [
  592.     {
  593.       "source": "40clf3",
  594.       "target": "eg5upi",
  595.       "sourceHandle": "40clf3-source-right",
  596.       "targetHandle": "eg5upi-target-left"
  597.     },
  598.     {
  599.       "source": "userChatInput",
  600.       "target": "fYxwWym8flYL",
  601.       "sourceHandle": "userChatInput-source-right",
  602.       "targetHandle": "fYxwWym8flYL-target-left"
  603.     },
  604.     {
  605.       "source": "fYxwWym8flYL",
  606.       "target": "40clf3",
  607.       "sourceHandle": "selectedTools",
  608.       "targetHandle": "selectedTools"
  609.     },
  610.     {
  611.       "source": "fYxwWym8flYL",
  612.       "target": "JSSQtDgwmmbE",
  613.       "sourceHandle": "selectedTools",
  614.       "targetHandle": "selectedTools"
  615.     },
  616.     {
  617.       "source": "40clf3",
  618.       "target": "IdntVQiTopHT",
  619.       "sourceHandle": "40clf3-source-right",
  620.       "targetHandle": "IdntVQiTopHT-target-left"
  621.     }
  622.   ]
  623. }

Laf 云函数代码

可以在 Laf实验室预约 - 图7 中快速构建 HTTP 接口。

函数代码

  1. import cloud from '@lafjs/cloud'
  2. const db = cloud.database()
  4. type RequestType = {
  5.     name: string;
  6.     time?: string;
  7.     labname?: string;
  8.     action: 'post' | 'delete' | 'put' | 'get'
  9. }
  11. export default async function (ctx: FunctionContext) {
  12.   try {
  13.     const {   action,...body  } = ctx.body as RequestType
  15.     if (action === 'get') {
  16.       return await getRecord(ctx.body)
  17.     }
  18.     if (action === 'post') {
  19.       return await createRecord(ctx.body)
  20.     }
  21.     if (action === 'put') {
  22.       return await putRecord(ctx.body)
  23.     }
  24.     if (action === 'delete') {
  25.       return await removeRecord(ctx.body)
  26.     }
  29.     return {
  30.       result: "异常"
  31.     }
  32.   } catch (err) {
  33.     return {
  34.       result: "异常"
  35.     }
  36.   }
  37. }
  39. async function putRecord({ name, time, labname }: RequestType) {
  40.   const missData = []
  41.   if (!name) missData.push("你的姓名")
  43.   if (missData.length > 0) {
  44.     return {
  45.       result: `请提供: ${missData.join("、")}`
  46.     }
  47.   }
  49.   const { data: record } = await db.collection("LabAppointment").where({
  50.     name, status: "unStart"
  51.   }).getOne()
  53.   if (!record) {
  54.     return {
  55.       result: `${name} 还没有预约记录`
  56.     }
  57.   }
  59.   const updateWhere = {
  60.     name,
  61.     time: time || record.time,
  62.     labname: labname || record.labname
  63.   }
  65.   await db.collection("LabAppointment").where({
  66.     name, status: "unStart"
  67.   }).update(updateWhere)
  69.   return {
  70.     result: `修改预约成功。
  71.   姓名：${name}·
  72.   时间: ${updateWhere.time}
  73.   实验室名: ${updateWhere.labname}
  74.   ` }
  75. }
  78. async function getRecord({ name }: RequestType) {
  79.   if (!name) {
  80.     return {
  81.       result: "请提供你的姓名"
  82.     }
  83.   }
  84.   const { data } = await db.collection('LabAppointment').where({ name, status: "unStart" }).getOne()
  86.   if (!data) {
  87.     return {
  88.       result: `${name} 没有预约中的记录`
  89.     }
  90.   }
  91.   return {
  92.     result: `${name} 有一条预约记录：
  93. 姓名：${data.name}
  94. 时间: ${data.time}
  95. 实验室名: ${data.labname}
  96.     `
  97.   }
  98. }
  100. async function removeRecord({ name }: RequestType) {
  101.   if (!name) {
  102.     return {
  103.       result: "请提供你的姓名"
  104.     }
  105.   }
  106.   const { deleted } = await db.collection('LabAppointment').where({ name, status: "unStart" }).remove()
  108.   if (deleted > 0) {
  109.     return {
  110.       result: `取消预约记录成功: ${name}`
  111.     }
  112.   }
  113.   return {
  114.     result: ` ${name} 没有预约中的记录`
  115.   }
  116. }
  118. async function createRecord({ name, time, labname }: RequestType) {
  119.   const missData = []
  120.   if (!name) missData.push("你的姓名")
  121.   if (!time) missData.push("需要预约的时间")
  122.   if (!labname) missData.push("实验室名名称")
  124.   if (missData.length > 0) {
  125.     return {
  126.       result: `请提供: ${missData.join("、")}`
  127.     }
  128.   }
  130.   const { data: record } = await db.collection("LabAppointment").where({
  131.     name, status: "unStart"
  132.   }).getOne()
  134.   if (record) {
  135.     return {
  136.       result: `您已经有一个预约记录了:
  137. 姓名：${record.name}
  138. 时间: ${record.time}
  139. 实验室名: ${record.labname}
  141. 每人仅能同时预约一个实验室名。
  142.       `
  143.     }
  144.   }
  146.   await db.collection("LabAppointment").add({
  147.     name, time, labname, status: "unStart"
  148.   })
  150.   return {
  151.     result: `预约成功。
  152.   姓名：${name}
  153.   时间: ${time}
  154.   实验室名: ${labname}
  155.   ` }
  156. }