Use createMany in Seed database example (#1776)

* Replace example with createMany * change comments + add an example for all databases Co-authored-by: David Price <[email protected]>
redwoodjs · Feb 23, 2021 · f9524ac · f9524ac
1 parent 6d604c1
commit f9524ac
Showing 1 changed file with 23 additions and 5 deletions.
diff --git a/packages/create-redwood-app/template/api/db/seed.js b/packages/create-redwood-app/template/api/db/seed.js
@@ -7,16 +7,34 @@ const db = new PrismaClient()
 
 async function main() {
   // https://www.prisma.io/docs/guides/prisma-guides/seed-database
-  //
   // Seed data is database data that needs to exist for your app to run.
   // Ideally this file should be idempotent: running it multiple times
   // will result in the same database state (usually by checking for the
   // existence of a record before trying to create it). For example:
+  /*
+    const result = await db.user.createMany({
+      data: [
+        { email: "[email protected]" },
+        { email: "[email protected]" },
+        { email: "[email protected]" },
+        { email: "[email protected]" },
+      ],
+      skipDuplicates: true, // Supported with Postgres database
+    })
+    console.log(`Created ${result.count} users!`)
+  */
+  // Note: createMany creates multiple records in a transaction.
+  // To enable this feature, add createMany to previewFeatures in your schema.
+  // See: https://www.prisma.io/docs/reference/api-reference/prisma-client-reference#createmany-preview
+  // Note: createMany is not supported by SQLite.
   //
-  //   const existing = await db.user.findMany({ where: { email: '[email protected]' }})
-  //   if (!existing.length) {
-  //     await db.user.create({ data: { name: 'Admin', email: '[email protected]' }})
-  //   }
+  // Example without createMany (supported by all databases):
+  /*
+    const existing = await db.user.findMany({ where: { email: '[email protected]' }})
+    if (!existing.length) {
+      await db.user.create({ data: { name: 'Admin', email: '[email protected]' }})
+    }
+  */
 
   console.info('No data to seed. See api/db/seed.js for info.')
 }