Mark calculation views explicitly instead of figuring it out implicitly.

packages/server/src/api/controllers/view/viewsV2.ts

@@ -127,6 +127,7 @@ export async function create(ctx: Ctx<CreateViewRequest, ViewResponse>) {
 
   const parsedView: Omit<RequiredKeys<ViewV2>, "id" | "version"> = {
     name: view.name,
+    type: view.type,
     tableId: view.tableId,
     query: view.query,
     queryUI: view.queryUI,
@@ -163,6 +164,7 @@ export async function update(ctx: Ctx<UpdateViewRequest, ViewResponse>) {
   const parsedView: RequiredKeys<ViewV2> = {
     id: view.id,
     name: view.name,
+    type: view.type,
     version: view.version,
     tableId: view.tableId,
     query: view.query,

packages/server/src/api/routes/tests/viewV2.spec.ts

@@ -26,6 +26,7 @@ import {
   BBReferenceFieldSubType,
   NumericCalculationFieldMetadata,
   ViewV2Schema,
+  ViewV2Type,
 } from "@budibase/types"
 import { generator, mocks } from "@budibase/backend-core/tests"
 import { DatabaseName, getDatasource } from "../../../integrations/tests/utils"
@@ -155,7 +156,7 @@ describe.each([
       })
 
       it("can persist views with all fields", async () => {
-        const newView: Required<Omit<CreateViewRequest, "queryUI">> = {
+        const newView: Required<Omit<CreateViewRequest, "queryUI" | "type">> = {
           name: generator.name(),
           tableId: table._id!,
           primaryDisplay: "id",
@@ -549,6 +550,7 @@ describe.each([
         let view = await config.api.viewV2.create({
           tableId: table._id!,
           name: generator.guid(),
+          type: ViewV2Type.CALCULATION,
           schema: {
             sum: {
               visible: true,
@@ -571,6 +573,29 @@ describe.each([
         expect(sum.calculationType).toEqual(CalculationType.SUM)
         expect(sum.field).toEqual("Price")
       })
+
+      it("cannot create a view with calculation fields unless it has the right type", async () => {
+        await config.api.viewV2.create(
+          {
+            tableId: table._id!,
+            name: generator.guid(),
+            schema: {
+              sum: {
+                visible: true,
+                calculationType: CalculationType.SUM,
+                field: "Price",
+              },
+            },
+          },
+          {
+            status: 400,
+            body: {
+              message:
+                "Calculation fields are not allowed in non-calculation views",
+            },
+          }
+        )
+      })
     })
 
     describe("update", () => {
@@ -615,7 +640,9 @@ describe.each([
       it("can update all fields", async () => {
         const tableId = table._id!
 
-        const updatedData: Required<Omit<UpdateViewRequest, "queryUI">> = {
+        const updatedData: Required<
+          Omit<UpdateViewRequest, "queryUI" | "type">
+        > = {
           version: view.version,
           id: view.id,
           tableId,
@@ -830,6 +857,32 @@ describe.each([
         )
       })
 
+      it("cannot update view type after creation", async () => {
+        const view = await config.api.viewV2.create({
+          tableId: table._id!,
+          name: generator.guid(),
+          schema: {
+            id: { visible: true },
+            Price: {
+              visible: true,
+            },
+          },
+        })
+
+        await config.api.viewV2.update(
+          {
+            ...view,
+            type: ViewV2Type.CALCULATION,
+          },
+          {
+            status: 400,
+            body: {
+              message: "Cannot update view type after creation",
+            },
+          }
+        )
+      })
+
       isInternal &&
         it("updating schema will only validate modified field", async () => {
           let view = await config.api.viewV2.create({
@@ -902,6 +955,7 @@ describe.each([
             view = await config.api.viewV2.create({
               tableId: table._id!,
               name: generator.guid(),
+              type: ViewV2Type.CALCULATION,
               schema: {
                 country: {
                   visible: true,
@@ -2639,6 +2693,7 @@ describe.each([
           it("should be able to search by calculations", async () => {
             const view = await config.api.viewV2.create({
               tableId: table._id!,
+              type: ViewV2Type.CALCULATION,
               name: generator.guid(),
               schema: {
                 "Quantity Sum": {
@@ -2673,6 +2728,7 @@ describe.each([
             const view = await config.api.viewV2.create({
               tableId: table._id!,
               name: generator.guid(),
+              type: ViewV2Type.CALCULATION,
               schema: {
                 quantity: {
                   visible: true,
@@ -2711,6 +2767,7 @@ describe.each([
             const view = await config.api.viewV2.create({
               tableId: table._id!,
               name: generator.guid(),
+              type: ViewV2Type.CALCULATION,
               schema: {
                 aggregate: {
                   visible: true,
@@ -2771,6 +2828,7 @@ describe.each([
             const view = await config.api.viewV2.create({
               tableId: table._id!,
               name: generator.guid(),
+              type: ViewV2Type.CALCULATION,
               schema: {
                 count: {
                   visible: true,
@@ -2805,6 +2863,7 @@ describe.each([
               {
                 tableId: table._id!,
                 name: generator.guid(),
+                type: ViewV2Type.CALCULATION,
                 schema: {
                   count: {
                     visible: true,
@@ -2853,6 +2912,7 @@ describe.each([
           const view = await config.api.viewV2.create({
             tableId: table._id!,
             name: generator.guid(),
+            type: ViewV2Type.CALCULATION,
             schema: {
               sum: {
                 visible: true,

packages/server/src/sdk/app/views/external.ts

@@ -70,6 +70,9 @@ export async function update(tableId: string, view: ViewV2): Promise<ViewV2> {
   if (!existingView || !existingView.name) {
     throw new HTTPError(`View ${view.id} not found in table ${tableId}`, 404)
   }
+  if (isV2(existingView) && existingView.type !== view.type) {
+    throw new HTTPError(`Cannot update view type after creation`, 400)
+  }
 
   delete views[existingView.name]
   views[view.name] = view

packages/server/src/sdk/app/views/index.ts

@@ -111,6 +111,13 @@ async function guardViewSchema(
 
   if (helpers.views.isCalculationView(view)) {
     await guardCalculationViewSchema(table, view)
+  } else {
+    if (helpers.views.hasCalculationFields(view)) {
+      throw new HTTPError(
+        "Calculation fields are not allowed in non-calculation views",
+        400
+      )
+    }
   }
 
   await checkReadonlyFields(table, view)

packages/server/src/sdk/app/views/internal.ts

@@ -59,6 +59,10 @@ export async function update(tableId: string, view: ViewV2): Promise<ViewV2> {
     throw new HTTPError(`View ${view.id} not found in table ${tableId}`, 404)
   }
 
+  if (isV2(existingView) && existingView.type !== view.type) {
+    throw new HTTPError(`Cannot update view type after creation`, 400)
+  }
+
   delete table.views[existingView.name]
   table.views[view.name] = view
   await db.put(table)

packages/shared-core/src/helpers/views.ts

@@ -3,6 +3,7 @@ import {
   ViewCalculationFieldMetadata,
   ViewFieldMetadata,
   ViewV2,
+  ViewV2Type,
 } from "@budibase/types"
 import { pickBy } from "lodash"
 
@@ -21,6 +22,10 @@ export function isBasicViewField(
 type UnsavedViewV2 = Omit<ViewV2, "id" | "version">
 
 export function isCalculationView(view: UnsavedViewV2) {
+  return view.type === ViewV2Type.CALCULATION
+}
+
+export function hasCalculationFields(view: UnsavedViewV2) {
   return Object.values(view.schema || {}).some(isCalculationField)
 }
 

packages/types/src/documents/app/view.ts

@@ -79,10 +79,15 @@ export enum CalculationType {
   MAX = "max",
 }
 
+export enum ViewV2Type {
+  CALCULATION = "calculation",
+}
+
 export interface ViewV2 {
   version: 2
   id: string
   name: string
+  type?: ViewV2Type
   primaryDisplay?: string
   tableId: string
   query?: LegacyFilter[] | SearchFilters