feat(工单字段): 实现工单字段管理功能

新增工单字段模型、路由和初始化脚本
添加前端工单字段管理页面
修改工单管理页面以支持自定义字段

backend/routes/ticketFields.js

@@ -0,0 +1,95 @@
+const express = require('express');
+const router = express.Router();
+const TicketField = require('../models/TicketField');
+
+router.get('/', async (req, res) => {
+  try {
+    const fields = await TicketField.findAll({
+      order: [['order', 'ASC']]
+    });
+    res.json(fields);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+router.get('/:fieldId', async (req, res) => {
+  try {
+    const field = await TicketField.findByPk(req.params.fieldId);
+    if (!field) {
+      return res.status(404).json({ error: '字段不存在' });
+    }
+    res.json(field);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+router.post('/', async (req, res) => {
+  try {
+    const field = await TicketField.create(req.body);
+    res.status(201).json(field);
+  } catch (error) {
+    res.status(400).json({ error: error.message });
+  }
+});
+
+router.put('/:fieldId', async (req, res) => {
+  try {
+    const [updated] = await TicketField.update(req.body, {
+      where: { fieldId: req.params.fieldId }
+    });
+    if (updated) {
+      const updatedField = await TicketField.findByPk(req.params.fieldId);
+      res.json(updatedField);
+    } else {
+      res.status(404).json({ error: '字段不存在' });
+    }
+  } catch (error) {
+    res.status(400).json({ error: error.message });
+  }
+});
+
+router.delete('/:fieldId', async (req, res) => {
+  try {
+    const deleted = await TicketField.destroy({
+      where: { fieldId: req.params.fieldId }
+    });
+    if (deleted) {
+      res.status(204).json();
+    } else {
+      res.status(404).json({ error: '字段不存在' });
+    }
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+router.post('/config', async (req, res) => {
+  try {
+    const fieldConfigs = req.body;
+    
+    if (!Array.isArray(fieldConfigs)) {
+      return res.status(400).json({ error: '输入必须是数组' });
+    }
+    
+    const updatedFields = [];
+    for (const config of fieldConfigs) {
+      const [updated] = await TicketField.update(
+        { visible: config.visible },
+        { where: { fieldName: config.fieldName } }
+      );
+      
+      if (updated) {
+        const updatedField = await TicketField.findOne({ where: { fieldName: config.fieldName } });
+        updatedFields.push(updatedField);
+      }
+    }
+    
+    res.json(updatedFields);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+module.exports = router;