feat: 完成现有小程序接口的全部迁移至新后端

2026-10-19 13:17:51 +08:00
parent 8827110f2f
commit d30cf25890
148 changed files with 13287 additions and 34 deletions
@@ -0,0 +1,132 @@
+# MySQL Setup
+
+Configure **Prisma ORM 7** with MySQL and MariaDB. For an existing Prisma 6 app, keep its configuration and use the [Prisma 6 docs](https://www.prisma.io/docs/orm/v6); the configuration and adapter examples below are for 7.
+
+## Prerequisites
+
+- MySQL or MariaDB database
+- Connection string
+
+## 1. Schema Configuration
+
+In `prisma/schema.prisma`:
+
+```prisma
+datasource db {
+  provider = "mysql"
+}
+
+generator client {
+  provider = "prisma-client"
+  output   = "../generated"
+}
+```
+
+## 2. Config Configuration
+
+In `prisma.config.ts`:
+
+```typescript
+import 'dotenv/config'
+import { defineConfig, env } from 'prisma/config'
+
+export default defineConfig({
+  schema: 'prisma/schema.prisma',
+  datasource: {
+    url: env('DATABASE_URL'),
+  },
+})
+```
+
+## 3. Environment Variable
+
+In `.env`:
+
+```env
+DATABASE_URL="mysql://user:password@localhost:3306/mydb"
+```
+
+### Connection String Format
+
+```
+mysql://USER:PASSWORD@HOST:PORT/DATABASE
+```
+
+- **USER**: Database user
+- **PASSWORD**: Password
+- **HOST**: Hostname
+- **PORT**: Port (default 3306)
+- **DATABASE**: Database name
+
+## Driver Adapter
+
+Use a driver adapter for the standard SQL workflow.
+
+1. Install adapter and driver:
+   ```bash
+   npm install @prisma/adapter-mariadb@7 mariadb
+   ```
+
+2. Set `MYSQL_USER`, `MYSQL_PASSWORD`, and `MYSQL_DATABASE` in the application environment to match the CLI URL, and use the same host and port. Instantiate Prisma Client with the adapter:
+
+   ```typescript
+   import 'dotenv/config'
+   import { PrismaClient } from '../generated/client'
+   import { PrismaMariaDb } from '@prisma/adapter-mariadb'
+
+   const adapter = new PrismaMariaDb({
+     host: 'localhost',
+     port: 3306,
+     connectionLimit: 5,
+     user: process.env.MYSQL_USER,
+     password: process.env.MYSQL_PASSWORD,
+     database: process.env.MYSQL_DATABASE,
+   })
+
+   const prisma = new PrismaClient({ adapter })
+   ```
+
+### Text protocol option
+
+If you need the MariaDB driver's text protocol instead of the default binary `execute()` path, enable `useTextProtocol` explicitly:
+
+```typescript
+import { PrismaClient } from '../generated/client'
+import { PrismaMariaDb } from '@prisma/adapter-mariadb'
+
+const adapter = new PrismaMariaDb(process.env.DATABASE_URL!, {
+  useTextProtocol: true,
+})
+
+const prisma = new PrismaClient({ adapter })
+```
+
+Use this only when you specifically need text-protocol compatibility for your MariaDB setup.
+
+## PlanetScale Setup
+
+Check whether foreign key constraints are enabled on the PlanetScale database. When they are disabled, use `relationMode = "prisma"` and add indexes for relation fields. Do not override an existing database that has foreign keys enabled.
+
+In `prisma/schema.prisma`:
+
+```prisma
+datasource db {
+  provider     = "mysql"
+  relationMode = "prisma" // Emulate foreign keys in Prisma
+}
+```
+
+## Common Issues
+
+### "Too many connections"
+
+Set `connectionLimit` on `PrismaMariaDb`, as in the example above. The Prisma 6 `connection_limit` URL parameter does not configure the Prisma 7 adapter pool.
+
+### JSON Support
+MySQL 5.7+ supports JSON. MariaDB 10.2+ supports JSON (as an alias for LONGTEXT with check constraints). Prisma handles this, but verify your version.
+
+## References
+
+- [Prisma 7 connection pool settings](https://www.prisma.io/docs/orm/v7/prisma-client/setup-and-configuration/databases-connections/connection-pool)
+- [PlanetScale foreign key configuration](https://www.prisma.io/docs/orm/v7/overview/databases/planetscale)
+- [Prisma 7 MySQL and MariaDB documentation](https://www.prisma.io/docs/orm/v7/core-concepts/supported-databases/mysql)