Fixes for adding autocolumns, it was not possible to select auto column type and fixing icon, as well as display of column when editing it - this corrects a few issues in this area as auto columns did not have a correct fieldId and also did not have a valid field definition.

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

@@ -36,7 +36,7 @@
   import { FieldType, FieldSubtype, SourceName } from "@budibase/types"
   import RelationshipSelector from "components/common/RelationshipSelector.svelte"
 
-  const AUTO_TYPE = "auto"
+  const AUTO_TYPE = FIELDS.AUTO.type
   const FORMULA_TYPE = FIELDS.FORMULA.type
   const LINK_TYPE = FIELDS.LINK.type
   const STRING_TYPE = FIELDS.STRING.type
@@ -60,9 +60,14 @@
     {}
   )
 
-  function makeFieldId(type, subtype) {
+  function makeFieldId(type, subtype, autocolumn) {
+    // don't make field IDs for auto types
+    if (type === AUTO_TYPE || autocolumn) {
+      return type.toUpperCase()
+    } else {
       return `${type}${subtype || ""}`.toUpperCase()
     }
+  }
 
   let originalName
   let linkEditDisabled
@@ -183,7 +188,8 @@
     if (!savingColumn) {
       editableColumn.fieldId = makeFieldId(
         editableColumn.type,
-        editableColumn.subtype
+        editableColumn.subtype,
+        editableColumn.autocolumn
       )
 
       allowedTypes = getAllowedTypes().map(t => ({
@@ -419,7 +425,7 @@
         FIELDS.FORMULA,
         FIELDS.JSON,
         isUsers ? FIELDS.USERS : FIELDS.USER,
-        { name: "Auto Column", type: AUTO_TYPE },
+        FIELDS.AUTO,
       ]
     } else {
       let fields = [
@@ -538,7 +544,7 @@
     getOptionValue={field => field.fieldId}
     getOptionIcon={field => field.icon}
     isOptionEnabled={option => {
-      if (option.type == AUTO_TYPE) {
+      if (option.type === AUTO_TYPE) {
         return availableAutoColumnKeys?.length > 0
       }
       return true

packages/builder/src/constants/backend/index.js

@@ -1,5 +1,21 @@
 import { FieldType, FieldSubtype } from "@budibase/types"
 
+export const AUTO_COLUMN_SUB_TYPES = {
+  AUTO_ID: "autoID",
+  CREATED_BY: "createdBy",
+  CREATED_AT: "createdAt",
+  UPDATED_BY: "updatedBy",
+  UPDATED_AT: "updatedAt",
+}
+
+export const AUTO_COLUMN_DISPLAY_NAMES = {
+  AUTO_ID: "Auto ID",
+  CREATED_BY: "Created By",
+  CREATED_AT: "Created At",
+  UPDATED_BY: "Updated By",
+  UPDATED_AT: "Updated At",
+}
+
 export const FIELDS = {
   STRING: {
     name: "Text",
@@ -107,6 +123,12 @@ export const FIELDS = {
       presence: false,
     },
   },
+  AUTO: {
+    name: "Auto Column",
+    type: FieldType.AUTO,
+    icon: "MagicWand",
+    constraints: {},
+  },
   FORMULA: {
     name: "Formula",
     type: FieldType.FORMULA,
@@ -139,22 +161,6 @@ export const FIELDS = {
   },
 }
 
-export const AUTO_COLUMN_SUB_TYPES = {
-  AUTO_ID: "autoID",
-  CREATED_BY: "createdBy",
-  CREATED_AT: "createdAt",
-  UPDATED_BY: "updatedBy",
-  UPDATED_AT: "updatedAt",
-}
-
-export const AUTO_COLUMN_DISPLAY_NAMES = {
-  AUTO_ID: "Auto ID",
-  CREATED_BY: "Created By",
-  CREATED_AT: "Created At",
-  UPDATED_BY: "Updated By",
-  UPDATED_AT: "Updated At",
-}
-
 export const FILE_TYPES = {
   IMAGE: ["png", "tiff", "gif", "raw", "jpg", "jpeg"],
   CODE: ["js", "rs", "py", "java", "rb", "hs", "yml"],