Fix #2209 - views, calculations and group by can't support formula or link fields, making sure these aren't options in the UI. Also fixing an issue where formula values were being saved to DB.

packages/builder/src/components/backend/DataTable/modals/CalculateModal.svelte

@@ -2,6 +2,7 @@
   import { Select, Label, notifications, ModalContent } from "@budibase/bbui"
   import { tables, views } from "stores/backend"
   import analytics from "analytics"
+  import { FIELDS } from "constants/backend"
 
   const CALCULATIONS = [
     {
@@ -26,11 +27,15 @@
   $: fields =
     viewTable &&
     Object.keys(viewTable.schema).filter(
-      field =>
-        view.calculation === "count" ||
-        // don't want to perform calculations based on auto ID
-        (viewTable.schema[field].type === "number" &&
-          !viewTable.schema[field].autocolumn)
+      fieldName => {
+        const field = viewTable.schema[fieldName]
+        return field.type !== FIELDS.FORMULA.type && field.type !== FIELDS.LINK.type &&
+          (view.calculation === "count" ||
+            // don't want to perform calculations based on auto ID
+            (field.type === "number" &&
+              !field.autocolumn))
+      }
+
     )
 
   function saveView() {

packages/builder/src/components/backend/DataTable/modals/GroupByModal.svelte

@@ -11,7 +11,7 @@
   $: fields =
     viewTable &&
     Object.entries(viewTable.schema)
-      .filter(entry => entry[1].type !== FIELDS.LINK.type)
+      .filter(entry => entry[1].type !== FIELDS.LINK.type && entry[1].type !== FIELDS.FORMULA.type)
       .map(([key]) => key)
 
   function saveView() {

packages/server/src/utilities/rowProcessor.js

@@ -184,7 +184,13 @@ exports.inputProcessing = (user = {}, table, row) => {
       }
       continue
     }
-    clonedRow[key] = exports.coerce(value, field.type)
+    // specific case to delete formula values if they get saved
+    // type coercion cannot completely remove the field, so have to do it here
+    if (field.type === FieldTypes.FORMULA) {
+      delete clonedRow[key]
+    } else {
+      clonedRow[key] = exports.coerce(value, field.type)
+    }
   }
   // handle auto columns - this returns an object like {table, row}
   return processAutoColumn(user, copiedTable, clonedRow)