99 lines
2.6 KiB
Markdown
99 lines
2.6 KiB
Markdown
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# 问题排查
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## CLI 命令问题
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### 命令执行规则
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1. **独立执行**:每个 CLI 命令必须单独调用,等待结果后再继续
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2. **确认等待**:启用云服务时会弹出确认卡片,必须等待用户确认完成
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## 数据库问题
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### 数据看不到
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通常是 RLS 策略与实际功能不匹配:
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- 如果应用没有登录功能,使用匿名友好策略:`USING (true)`
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- 如果应用有登录功能,确保策略正确使用 `auth.uid()`
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### RLS 违规错误
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插入数据时出现"违反行级安全":
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- 确保 `user_id` 字段在 INSERT 时正确设置为 `auth.uid()`
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- 确保 `user_id` 字段不是 nullable(如果 RLS 策略依赖它)
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### 无限递归错误
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RLS 策略直接引用同一表:
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```sql
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-- ❌ 会导致无限递归
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CREATE POLICY "example" ON profiles
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FOR SELECT USING ((SELECT role FROM profiles WHERE id = auth.uid()) = 'admin');
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-- ✅ 使用安全定义函数
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CREATE POLICY "example" ON profiles
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FOR SELECT USING (public.has_role(auth.uid(), 'admin'));
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```
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## 认证问题
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### 认证状态监听死锁
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```typescript
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-- ❌ 错误:会导致死锁
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supabase.auth.onAuthStateChange(async (event, session) => {
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const profile = await supabase.from('profiles').select()... // 死锁
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});
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-- ✅ 正确:延迟 Supabase 调用
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supabase.auth.onAuthStateChange((event, session) => {
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setSession(session);
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if (session?.user) {
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setTimeout(() => fetchUserProfile(session.user.id), 0);
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}
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});
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```
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## 存储问题
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### 文件上传 400 错误
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必须使用 ArrayBuffer,不能使用 Blob/File/FormData:
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```typescript
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import { decode } from 'base64-arraybuffer';
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// ✅ 正确
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await supabase.storage.from('bucket').upload('path', decode(base64));
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// ❌ 错误
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await supabase.storage.from('bucket').upload('path', file); // 400 错误
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```
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## Edge Functions 问题
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### CORS 错误
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确保函数包含 CORS 处理:
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```typescript
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if (req.method === 'OPTIONS') {
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return new Response('ok', {
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headers: {
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'Access-Control-Allow-Origin': '*',
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'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
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'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey, content-type',
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},
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});
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}
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```
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## 查询问题
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### 查询限制
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Supabase 默认限制 1000 行,使用分页:
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```typescript
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const { data } = await supabase
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.from('posts')
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.select()
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.range(0, 49); // 前50条
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```
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### 单行查询错误
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```typescript
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// ✅ 安全
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const { data } = await supabase.from('table').select().eq('id', id).maybeSingle();
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// ❌ 可能出错
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const { data } = await supabase.from('table').select().eq('id', id).single();
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```
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