diff --git a/comps/form/typings.ts b/comps/form/typings.ts
index 53965b8..fbd4224 100755
--- a/comps/form/typings.ts
+++ b/comps/form/typings.ts
@@ -5,6 +5,7 @@ import { FormHook } from "../form-old/utils/utils";
 import { editorFormData } from "./utils/ed-data";
 import { PropTypeText } from "./field/type/TypeText";
 import { PropTypeRelation } from "./field/type/TypeRelation";
+import { getProp } from "../../..";
 
 export type FMProps = {
   on_init: (arg: { fm: FMLocal; submit: any; reload: any }) => any;
@@ -164,3 +165,34 @@ export const formType = (active: { item_id: string }, meta: any) => {
     };
   }`;
 };
+
+export const fieldType = (item: any, meta: any, fm: FMLocal) => {
+  const m = meta[item.id];
+  if (m) {
+    const name = getProp(m.item, "name");
+    const field = fm.fields[name];
+    const def = fm.field_def[name];
+    return `
+    const field = null as unknown as {
+      status: "init" | "loading" | "ready";
+      name: "${name}";
+      type: "${field.type}";
+      label: any;
+      desc: any;
+      prefix: any;
+      suffix: any;
+      width: any;
+      required: boolean;
+      focused: boolean;
+      disabled: boolean;
+      required_msg: any;
+      col?: GFCol;
+      Child: () => ReactNode;
+      input: Record<string, any> & {
+        render: () => void;
+      };
+      prop?: any;
+    }
+  `;
+  }
+};
diff --git a/comps/form/utils/use-field.tsx b/comps/form/utils/use-field.tsx
index b962860..2c47690 100755
--- a/comps/form/utils/use-field.tsx
+++ b/comps/form/utils/use-field.tsx
@@ -1,6 +1,6 @@
 import { useLocal } from "@/utils/use-local";
-import { FMLocal, FieldInternal, FieldProp } from "../typings";
 import { useEffect } from "react";
+import { FieldInternal, FieldProp } from "../typings";
 
 export const useField = (arg: FieldProp) => {
   const field = useLocal<FieldInternal<typeof arg.type>>({
@@ -32,7 +32,7 @@ export const useField = (arg: FieldProp) => {
   const fm = arg.fm;
 
   useEffect(() => {
-    if (field.status === "init") {
+    if (field.status === "init" || !fm.fields[arg.name]) {
       field.status = "ready";
       fm.fields[arg.name] = field;
       field.render();
diff --git a/comps/md/utils/typings.ts b/comps/md/utils/typings.ts
index e010374..9a99d61 100755
--- a/comps/md/utils/typings.ts
+++ b/comps/md/utils/typings.ts
@@ -50,7 +50,7 @@ export type MDLocalInternal = {
 export type MDRef = { PassProp: any; child: any };
 export type MDLocal = MDLocalInternal & { render: (force?: boolean) => void };
 
-export const MasterDetailType = `{
+export const MasterDetailType = `const md = {
   name: string;
   breadcrumb: {
     label: React.ReactNode;
diff --git a/data.ts b/data.ts
index bc7ecb1..d8ad1ee 100755
--- a/data.ts
+++ b/data.ts
@@ -3,6 +3,7 @@ export { FieldTypeRelation } from "./comps/form/field/type/TypeRelation";
 export { Form } from "@/comps/form/Form";
 export { Field } from "@/comps/form/field/Field";
 export { formType } from "@/comps/form/typings";
+export { fieldType } from "@/comps/form/typings";
 export { TableList } from "@/comps/list/TableList";
 export { TableListType } from "@/comps/list/typings";
 export { MasterDetail } from "@/comps/md/MasterDetail";
diff --git a/gen/gen_relation/gen_relation.ts b/gen/gen_relation/gen_relation.ts
index 0a8706d..58768ce 100755
--- a/gen/gen_relation/gen_relation.ts
+++ b/gen/gen_relation/gen_relation.ts
@@ -35,6 +35,7 @@ export const gen_relation = async (modify: (data: any) => void, data: any) => {
     alert("Failed to generate! Primary Key not found. ");
     return;
   }
+
   if (pk) {
     const code = {} as any;
     if (data["on_load"]) {