[WIP] Add support for MongoDB

.github/workflows/tests.yml

@@ -108,11 +108,18 @@ jobs:
           POSTGRES_DB: test_db
         ports:
           - 5432:5432
+      mongodb:
+        image: mongo
+        env:
+          MONGO_INITDB_ROOT_USERNAME: keystone5
+          MONGO_INITDB_ROOT_PASSWORD: k3yst0n3
+        ports:
+        - 27017:27017
     strategy:
       fail-fast: false
       matrix:
         index: [0, 1, 2, 3, 4, 5, 6, 7, 8]
-        adapter: ['postgresql', 'sqlite']
+        adapter: ['postgresql', 'sqlite', 'mongodb']
     steps:
       - name: Checkout Repo
         uses: actions/checkout@v2
@@ -153,7 +160,7 @@ jobs:
           CI_NODE_TOTAL: 9
           CI_NODE_INDEX: ${{ matrix.index }}
           TEST_ADAPTER: ${{ matrix.adapter }}
-          DATABASE_URL: ${{ matrix.adapter == 'sqlite' && 'file:./dev.db' || 'postgres://keystone5:k3yst0n3@localhost:5432/test_db' }}
+          DATABASE_URL: ${{ matrix.adapter == 'sqlite' && 'file:./dev.db' || matrix.adapter == 'postgresql' && 'postgres://keystone5:k3yst0n3@localhost:5432/test_db' || 'mongodb://keystone5:k3yst0n3@localhost:27017/test_db' }}
 
   non-api-tests:
     name: Package Unit Tests

packages/keystone/src/lib/config/initConfig.ts

@@ -8,9 +8,9 @@ import { applyIdFieldDefaults } from './applyIdFieldDefaults';
 */
 
 export function initConfig(config: KeystoneConfig) {
-  if (!['postgresql', 'sqlite'].includes(config.db.provider)) {
+  if (!['postgresql', 'sqlite', 'mongodb'].includes(config.db.provider)) {
     throw new Error(
-      'Invalid db configuration. Please specify db.provider as either "sqlite" or "postgresql"'
+      'Invalid db configuration. Please specify db.provider as either "sqlite", "postgresql", or "mongodb"'
     );
   }
 

packages/keystone/src/lib/core/prisma-schema.ts

@@ -207,14 +207,24 @@ export function printPrismaSchema(
 datasource ${provider} {
   url = env("DATABASE_URL")
   provider = "${provider}"
-}
+}\n\n`;
 
-generator client {
+  if (provider === 'mongodb') {
+    prismaSchema += `generator client {
   provider = "prisma-client-js"
+  previewFeatures = ["mongoDb"]
   output = "${clientDir}"${prismaFlags}
   engineType = "binary"
 }
 \n`;
+  } else {
+    prismaSchema += `generator client {
+    provider = "prisma-client-js"
+  output = "${clientDir}"${prismaFlags}
+  engineType = "binary"
+  }
+  \n`;
+  }
   for (const [listKey, { resolvedDbFields }] of Object.entries(lists)) {
     prismaSchema += `model ${listKey} {`;
     for (const [fieldPath, field] of Object.entries(resolvedDbFields)) {
@@ -224,6 +234,9 @@ generator client {
       if (fieldPath === 'id') {
         assertDbFieldIsValidForIdField(listKey, field);
         prismaSchema += ' @id';
+        if (provider === 'mongodb') {
+          prismaSchema += ' @map("_id")';
+        }
       }
     }
     prismaSchema += `\n}\n`;

packages/keystone/src/types/config/index.ts

@@ -57,7 +57,7 @@ export type DatabaseConfig = {
   useMigrations?: boolean;
   enableLogging?: boolean;
   idField?: IdFieldConfig;
-  provider: 'postgresql' | 'sqlite';
+  provider: 'postgresql' | 'sqlite' | 'mongodb';
   prismaPreviewFeatures?: string[]; // https://www.prisma.io/docs/concepts/components/preview-features
 };
 

packages/keystone/src/types/core.ts

@@ -3,7 +3,7 @@ import type { GraphQLResolveInfo } from 'graphql';
 import type { GqlNames } from './utils';
 import type { KeystoneContext, SessionContext } from './context';
 
-export type DatabaseProvider = 'sqlite' | 'postgresql';
+export type DatabaseProvider = 'sqlite' | 'postgresql' | 'mongodb';
 
 export type CreateRequestContext = (
   req: IncomingMessage,

packages/keystone/src/types/filters/index.ts

@@ -1,5 +1,6 @@
 export * as postgresql from './providers/postgresql';
 export * as sqlite from './providers/sqlite';
+export * as mongodb from './providers/mongodb';
 
 type EntriesAssumingNoExtraProps<T> = {
   [Key in keyof T]-?: [Key, T[Key]];