Fix table updates wiping out view calculation fields.

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

@@ -1904,6 +1904,59 @@ describe.each([
         })
       })
     })
+
+    describe("calculation views", () => {
+      it("should not remove calculation columns when modifying table schema", async () => {
+        let table = await config.api.table.save(
+          saveTableRequest({
+            schema: {
+              name: {
+                name: "name",
+                type: FieldType.STRING,
+              },
+              age: {
+                name: "age",
+                type: FieldType.NUMBER,
+              },
+            },
+          })
+        )
+
+        let view = await config.api.viewV2.create({
+          tableId: table._id!,
+          name: generator.guid(),
+          type: ViewV2Type.CALCULATION,
+          schema: {
+            sum: {
+              visible: true,
+              calculationType: CalculationType.SUM,
+              field: "age",
+            },
+          },
+        })
+
+        table = await config.api.table.get(table._id!)
+        await config.api.table.save({
+          ...table,
+          schema: {
+            ...table.schema,
+            name: {
+              name: "name",
+              type: FieldType.STRING,
+              constraints: { presence: true },
+            },
+          },
+        })
+
+        view = await config.api.viewV2.get(view.id)
+        expect(Object.keys(view.schema!).sort()).toEqual([
+          "age",
+          "id",
+          "name",
+          "sum",
+        ])
+      })
+    })
   })
 
   describe("row operations", () => {

packages/server/src/api/routes/utils/validators.ts

@@ -20,31 +20,30 @@ const OPTIONAL_NUMBER = Joi.number().optional().allow(null)
 const OPTIONAL_BOOLEAN = Joi.boolean().optional().allow(null)
 const APP_NAME_REGEX = /^[\w\s]+$/
 
-const validateViewSchemas: CustomValidator<Table> = (table, helpers) => {
-  if (table.views && Object.entries(table.views).length) {
-    const requiredFields = Object.entries(table.schema)
-      .filter(([_, v]) => isRequired(v.constraints))
-      .map(([key]) => key)
-    if (requiredFields.length) {
+const validateViewSchemas: CustomValidator<Table> = (table, joiHelpers) => {
+  if (!table.views || Object.keys(table.views).length === 0) {
+    return table
+  }
+  const required = Object.keys(table.schema).filter(key =>
+    isRequired(table.schema[key].constraints)
+  )
+  if (required.length === 0) {
+    return table
+  }
   for (const view of Object.values(table.views)) {
-        if (!sdk.views.isV2(view)) {
+    if (!sdk.views.isV2(view) || helpers.views.isCalculationView(view)) {
       continue
     }
-
-        const editableViewFields = Object.entries(view.schema || {})
+    const editable = Object.entries(view.schema || {})
       .filter(([_, f]) => f.visible && !f.readonly)
       .map(([key]) => key)
-        const missingField = requiredFields.find(
-          f => !editableViewFields.includes(f)
-        )
+    const missingField = required.find(f => !editable.includes(f))
     if (missingField) {
-          return helpers.message({
+      return joiHelpers.message({
         custom: `To make field "${missingField}" required, this field must be present and writable in views: ${view.name}.`,
       })
     }
   }
-    }
-  }
   return table
 }
 

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

@@ -96,6 +96,13 @@ async function guardCalculationViewSchema(
       continue
     }
 
+    if (!schema.field) {
+      throw new HTTPError(
+        `Calculation field "${name}" is missing a "field" property`,
+        400
+      )
+    }
+
     const targetSchema = table.schema[schema.field]
     if (!targetSchema) {
       throw new HTTPError(
@@ -371,7 +378,8 @@ export function syncSchema(
 
   if (view.schema) {
     for (const fieldName of Object.keys(view.schema)) {
-      if (!schema[fieldName]) {
+      const viewSchema = view.schema[fieldName]
+      if (!helpers.views.isCalculationField(viewSchema) && !schema[fieldName]) {
         delete view.schema[fieldName]
       }
     }