Implement many-to-many user column migrations.

packages/server/src/api/routes/tests/table.spec.ts

@@ -8,6 +8,7 @@ import {
   AutoFieldSubTypes,
   InternalTable,
   FieldSubtype,
+  Row,
 } from "@budibase/types"
 import { checkBuilderEndpoint } from "./utilities/TestFunctions"
 import * as setup from "./utilities"
@@ -421,8 +422,13 @@ describe("/tables", () => {
   })
 
   describe("migrate", () => {
-    it("should successfully migrate a user relationship to a user column", async () => {
-      const users = await config.api.row.fetch(InternalTable.USER_METADATA)
+    it("should successfully migrate a one-to-many user relationship to a user column", async () => {
+      const users = await Promise.all([
+        config.createUser({ email: "1@example.com" }),
+        config.createUser({ email: "2@example.com" }),
+        config.createUser({ email: "3@example.com" }),
+      ])
+
       const table = await config.api.table.create({
         name: "table",
         type: "table",
@@ -441,9 +447,11 @@ describe("/tables", () => {
         },
       })
 
-      await config.api.row.save(table._id!, {
-        "user relationship": users,
-      })
+      const rows = await Promise.all(
+        users.map(u =>
+          config.api.row.save(table._id!, { "user relationship": [u] })
+        )
+      )
 
       await config.api.table.migrate(table._id!, {
         oldColumn: table.schema["user relationship"],
@@ -458,9 +466,80 @@ describe("/tables", () => {
       expect(migratedTable.schema["user column"]).toBeDefined()
       expect(migratedTable.schema["user relationship"]).not.toBeDefined()
 
-      const rows = await config.api.row.fetch(table._id!)
-      expect(rows[0]["user column"]).toBeDefined()
-      expect(rows[0]["user relationship"]).not.toBeDefined()
+      const migratedRows = await config.api.row.fetch(table._id!)
+
+      rows.sort((a, b) => a._id!.localeCompare(b._id!))
+      migratedRows.sort((a, b) => a._id!.localeCompare(b._id!))
+
+      for (const [i, row] of rows.entries()) {
+        const migratedRow = migratedRows[i]
+        expect(migratedRow["user column"]).toBeDefined()
+        expect(migratedRow["user relationship"]).not.toBeDefined()
+        expect(row["user relationship"][0]._id).toEqual(
+          migratedRow["user column"][0]._id
+        )
+      }
+    })
+
+    it("should successfully migrate a many-to-many user relationship to a users column", async () => {
+      const users = await Promise.all([
+        config.createUser({ email: "1@example.com" }),
+        config.createUser({ email: "2@example.com" }),
+        config.createUser({ email: "3@example.com" }),
+      ])
+
+      const table = await config.api.table.create({
+        name: "table",
+        type: "table",
+        schema: {
+          "user relationship": {
+            type: FieldType.LINK,
+            fieldName: "test",
+            name: "user relationship",
+            constraints: {
+              type: "array",
+              presence: false,
+            },
+            relationshipType: RelationshipType.MANY_TO_MANY,
+            tableId: InternalTable.USER_METADATA,
+          },
+        },
+      })
+
+      const row1 = await config.api.row.save(table._id!, {
+        "user relationship": [users[0], users[1]],
+      })
+
+      const row2 = await config.api.row.save(table._id!, {
+        "user relationship": [users[2]],
+      })
+
+      await config.api.table.migrate(table._id!, {
+        oldColumn: table.schema["user relationship"],
+        newColumn: {
+          name: "user column",
+          type: FieldType.BB_REFERENCE,
+          subtype: FieldSubtype.USERS,
+        },
+      })
+
+      const migratedTable = await config.api.table.get(table._id!)
+      expect(migratedTable.schema["user column"]).toBeDefined()
+      expect(migratedTable.schema["user relationship"]).not.toBeDefined()
+
+      const row1Migrated = (await config.api.row.get(table._id!, row1._id!))
+        .body as Row
+      expect(row1Migrated["user relationship"]).not.toBeDefined()
+      expect(row1Migrated["user column"].map((r: Row) => r._id)).toEqual(
+        expect.arrayContaining([users[0]._id, users[1]._id])
+      )
+
+      const row2Migrated = (await config.api.row.get(table._id!, row2._id!))
+        .body as Row
+      expect(row2Migrated["user relationship"]).not.toBeDefined()
+      expect(row2Migrated["user column"].map((r: Row) => r._id)).toEqual([
+        users[2]._id,
+      ])
     })
   })
 })

packages/server/src/sdk/app/rows/search.ts

@@ -57,6 +57,6 @@ export async function fetchView(
   tableId: string,
   viewName: string,
   params: ViewParams
-) {
+): Promise<Row[]> {
   return pickApi(tableId).fetchView(viewName, params)
 }

packages/server/src/sdk/app/tables/migration.ts

@@ -2,8 +2,12 @@ import { BadRequestError, context } from "@budibase/backend-core"
 import {
   BBReferenceFieldMetadata,
   FieldSchema,
+  FieldSubtype,
   InternalTable,
+  ManyToManyRelationshipFieldMetadata,
+  OneToManyRelationshipFieldMetadata,
   RelationshipFieldMetadata,
+  RelationshipType,
   Row,
   Table,
   isBBReferenceField,
@@ -77,13 +81,30 @@ function getColumnMigrator(
     )
   }
 
-  return new UserColumnMigrator(table, oldColumn, newColumn)
+  if (oldColumn.relationshipType === RelationshipType.ONE_TO_MANY) {
+    if (newColumn.subtype !== FieldSubtype.USER) {
+      throw new BadRequestError(
+        `Column "${oldColumn.name}" is a one-to-many column but "${newColumn.name}" is not a single user column`
+      )
+    }
+    return new OneToManyUserColumnMigrator(table, oldColumn, newColumn)
+  }
+  if (oldColumn.relationshipType === RelationshipType.MANY_TO_MANY) {
+    if (newColumn.subtype !== FieldSubtype.USERS) {
+      throw new BadRequestError(
+        `Column "${oldColumn.name}" is a many-to-many column but "${newColumn.name}" is not a multi user column`
+      )
+    }
+    return new ManyToManyUserColumnMigrator(table, oldColumn, newColumn)
+  }
+
+  throw new BadRequestError(`Unknown migration type`)
 }
 
-class UserColumnMigrator implements ColumnMigrator {
+class OneToManyUserColumnMigrator implements ColumnMigrator {
   constructor(
     private table: Table,
-    private oldColumn: RelationshipFieldMetadata,
+    private oldColumn: OneToManyRelationshipFieldMetadata,
     private newColumn: BBReferenceFieldMetadata
   ) {}
 
@@ -115,3 +136,42 @@ class UserColumnMigrator implements ColumnMigrator {
     await db.bulkDocs(rows)
   }
 }
+
+class ManyToManyUserColumnMigrator implements ColumnMigrator {
+  constructor(
+    private table: Table,
+    private oldColumn: ManyToManyRelationshipFieldMetadata,
+    private newColumn: BBReferenceFieldMetadata
+  ) {}
+
+  async doMigration() {
+    let rows = await sdk.rows.fetchRaw(this.table._id!)
+    let rowsById = rows.reduce((acc, row) => {
+      acc[row._id!] = row
+      return acc
+    }, {} as Record<string, Row>)
+
+    let links = await sdk.links.fetchWithDocument(this.table._id!)
+    for (let link of links) {
+      if (link.doc1.tableId !== this.table._id) {
+        continue
+      }
+      if (link.doc1.fieldName !== this.oldColumn.name) {
+        continue
+      }
+      if (link.doc2.tableId !== InternalTable.USER_METADATA) {
+        continue
+      }
+
+      let userId = dbCore.getGlobalIDFromUserMetadataID(link.doc2.rowId)
+      let row = rowsById[link.doc1.rowId]
+      if (!row[this.newColumn.name]) {
+        row[this.newColumn.name] = []
+      }
+      row[this.newColumn.name].push(userId)
+    }
+
+    let db = context.getAppDB()
+    await db.bulkDocs(rows)
+  }
+}

packages/server/src/tests/utilities/TestConfiguration.ts

@@ -55,6 +55,7 @@ import {
   RelationshipType,
   CreateViewRequest,
   RelationshipFieldMetadata,
+  User,
 } from "@budibase/types"
 
 import API from "./api"
@@ -254,7 +255,7 @@ class TestConfiguration {
     } catch (err) {
       existing = { email }
     }
-    const user = {
+    const user: User = {
       _id: id,
       ...existing,
       roles: roles || {},

packages/server/src/tests/utilities/api/index.ts

@@ -27,5 +27,6 @@ export default class API {
     this.datasource = new DatasourceAPI(config)
     this.screen = new ScreenAPI(config)
     this.application = new ApplicationAPI(config)
+    this.global = new GlobalAPI(config)
   }
 }