fix(consumable): 修复最大库存字段逻辑并改进耗材管理

将 maxStock 字段从允许 null 改为默认 0 表示无限制
添加耗材创建时的数据验证和错误处理
优化前端耗材管理页面的表单初始化和显示逻辑
添加数据库迁移脚本处理现有数据

backend/fix-maxstock.js

@@ -0,0 +1,99 @@
+const { sequelize } = require('./db');
+
+async function fixMaxStock() {
+  try {
+    console.log('开始修复 maxStock 字段...');
+
+    // 检查当前表结构
+    const [results] = await sequelize.query(
+      "PRAGMA table_info(consumables);"
+    );
+
+    console.log('当前表结构:');
+    results.forEach(col => {
+      console.log(`  ${col.name}: ${col.type} ${col.notnull ? 'NOT NULL' : 'NULL'} default=${col.dflt_value}`);
+    });
+
+    const maxStockCol = results.find(c => c.name === 'maxStock');
+    if (maxStockCol) {
+      console.log('\n当前 maxStock 字段:', maxStockCol);
+
+      // SQLite 不支持直接修改列，需要创建新表
+      console.log('\n需要重建表结构...');
+
+      // 1. 创建新表
+      await sequelize.query(`
+        CREATE TABLE consumables_new (
+          consumableId VARCHAR(255) PRIMARY KEY NOT NULL UNIQUE,
+          name VARCHAR(255) NOT NULL,
+          category VARCHAR(255) NOT NULL,
+          unit VARCHAR(255) NOT NULL DEFAULT '个',
+          currentStock INTEGER NOT NULL DEFAULT 0,
+          minStock INTEGER NOT NULL DEFAULT 10,
+          maxStock INTEGER NOT NULL DEFAULT 0,
+          unitPrice DECIMAL(10,2) NOT NULL DEFAULT 0,
+          supplier VARCHAR(255),
+          location VARCHAR(255),
+          description TEXT,
+          status VARCHAR(255) DEFAULT 'active',
+          version INTEGER NOT NULL DEFAULT 0,
+          createdAt DATETIME,
+          updatedAt DATETIME
+        )
+      `);
+
+      // 2. 复制数据（将 null 转换为 0）
+      await sequelize.query(`
+        INSERT INTO consumables_new
+        SELECT
+          consumableId,
+          name,
+          category,
+          unit,
+          currentStock,
+          minStock,
+          COALESCE(maxStock, 0) as maxStock,
+          unitPrice,
+          supplier,
+          location,
+          description,
+          status,
+          version,
+          createdAt,
+          updatedAt
+        FROM consumables
+      `);
+
+      // 3. 删除旧表
+      await sequelize.query('DROP TABLE consumables');
+
+      // 4. 重命名新表
+      await sequelize.query('ALTER TABLE consumables_new RENAME TO consumables');
+
+      // 5. 创建索引
+      await sequelize.query('CREATE INDEX consumables_category ON consumables(category)');
+      await sequelize.query('CREATE INDEX consumables_status ON consumables(status)');
+      await sequelize.query('CREATE INDEX consumables_category_status ON consumables(category, status)');
+      await sequelize.query('CREATE INDEX consumables_updatedAt ON consumables(updatedAt)');
+
+      console.log('\n表结构修复完成！');
+
+      // 验证新表结构
+      const [newResults] = await sequelize.query(
+        "PRAGMA table_info(consumables);"
+      );
+      console.log('\n新表结构:');
+      newResults.forEach(col => {
+        console.log(`  ${col.name}: ${col.type} ${col.notnull ? 'NOT NULL' : 'NULL'} default=${col.dflt_value}`);
+      });
+    }
+
+    console.log('\n修复完成！');
+    process.exit(0);
+  } catch (error) {
+    console.error('修复失败:', error);
+    process.exit(1);
+  }
+}
+
+fixMaxStock();

backend/models/Consumable.js

@@ -33,9 +33,9 @@ const Consumable = sequelize.define('Consumable', {
   },
   maxStock: {
     type: DataTypes.INTEGER,
-    allowNull: true,
-    defaultValue: null,
-    comment: '最大库存，null表示无限制'
+    allowNull: false,
+    defaultValue: 0,
+    comment: '最大库存，0表示无限制'
   },
   unitPrice: {
     type: DataTypes.DECIMAL(10, 2),

backend/routes/consumables.js

@@ -53,7 +53,13 @@ router.get('/', async (req, res) => {
 router.post('/', async (req, res) => {
   const transaction = await sequelize.transaction();
   try {
-    const consumable = await Consumable.create(req.body, { transaction });
+    console.log('接收到的数据:', JSON.stringify(req.body, null, 2));
+    const consumableData = {
+      ...req.body,
+      consumableId: req.body.consumableId || `CON${Date.now()}`
+    };
+    console.log('处理后的数据:', JSON.stringify(consumableData, null, 2));
+    const consumable = await Consumable.create(consumableData, { transaction });
     
     await ConsumableLog.create({
       consumableId: consumable.consumableId,
@@ -71,7 +77,13 @@ router.post('/', async (req, res) => {
     res.status(201).json(consumable);
   } catch (error) {
     await transaction.rollback();
-    res.status(400).json({ error: error.message });
+    console.error('创建耗材错误:', error);
+    if (error.name === 'SequelizeValidationError') {
+      const messages = error.errors.map(e => `${e.path}: ${e.message}`).join(', ');
+      res.status(400).json({ error: `Validation error: ${messages}` });
+    } else {
+      res.status(400).json({ error: error.message });
+    }
   }
 });