3 files changed, 14 insertions, 2 deletions
diff --git a/src/new_fields/Doc.ts b/src/new_fields/Doc.ts
index e0ab5d97c..29834256a 100644
--- a/src/new_fields/Doc.ts
+++ b/src/new_fields/Doc.ts
@@ -746,6 +746,11 @@ export namespace Doc {
             source.dragFactory instanceof Doc && source.dragFactory.isTemplateDoc ? source.dragFactory :
             source && source.layout instanceof Doc && source.layout.isTemplateDoc ? source.layout : undefined;
     }
+    export function setChildDetailed(target: Doc, source?: Doc) {
+        target.childDetailed = source && source.isTemplateDoc ? source : source &&
+            source.dragFactory instanceof Doc && source.dragFactory.isTemplateDoc ? source.dragFactory :
+            source && source.layout instanceof Doc && source.layout.isTemplateDoc ? source.layout : undefined;
+    }
 
     export function MakeDocFilter(docFilters: string[]) {
         let docFilterText = "";
diff --git a/src/new_fields/documentSchemas.ts b/src/new_fields/documentSchemas.ts
index d5c34e128..3683e5820 100644
--- a/src/new_fields/documentSchemas.ts
+++ b/src/new_fields/documentSchemas.ts
@@ -68,6 +68,13 @@ export const positionSchema = createSchema({
     z: "number",
 });
 
+export const collectionSchema = createSchema({
+    childLayout: Doc, // layout template for children of a collecion
+    childDetailed: Doc, // layout template to apply to a child when its clicked on in a collection and opened (requires onChildClick or other script to use this field)
+    onChildClick: ScriptField, // script to run for each child when its clicked
+    onCheckedClick: ScriptField, // script to run when a checkbox is clicked next to a child in a tree view
+});
+
 export type Document = makeInterface<[typeof documentSchema]>;
 export const Document = makeInterface(documentSchema);
 
diff --git a/src/new_fields/util.ts b/src/new_fields/util.ts
index 4147be278..3255c6172 100644
--- a/src/new_fields/util.ts
+++ b/src/new_fields/util.ts
@@ -1,7 +1,7 @@
 import { UndoManager } from "../client/util/UndoManager";
 import { Doc, Field, FieldResult, UpdatingFromServer } from "./Doc";
 import { SerializationHelper } from "../client/util/SerializationHelper";
-import { ProxyField } from "./Proxy";
+import { ProxyField, PrefetchProxy } from "./Proxy";
 import { RefField } from "./RefField";
 import { ObjectField } from "./ObjectField";
 import { action, trace } from "mobx";
@@ -52,7 +52,7 @@ const _setterImpl = action(function (target: any, prop: string | symbol | number
         value = new ProxyField(value);
     }
     if (value instanceof ObjectField) {
-        if (value[Parent] && value[Parent] !== receiver) {
+        if (value[Parent] && value[Parent] !== receiver && !(value instanceof PrefetchProxy)) {
             throw new Error("Can't put the same object in multiple documents at the same time");
         }
         value[Parent] = receiver;