Fix raw json field display in read only (#16502)

Preview
<img width="1185" height="617" alt="Screenshot 2025-12-11 at 15 54 07"
src="https://github.com/user-attachments/assets/863fb58c-04df-4e4d-bf8c-0045c833466c"
/>

Fixes https://github.com/twentyhq/twenty/issues/16311

packages/twenty-front/src/modules/object-record/record-field/ui/meta-types/display/components/JsonFieldDisplay.tsx

@@ -1,9 +1,29 @@
 import { useJsonFieldDisplay } from '@/object-record/record-field/ui/meta-types/hooks/useJsonFieldDisplay';
 import { JsonDisplay } from '@/ui/field/display/components/JsonDisplay';
+import { ExpandedFieldDisplay } from '@/ui/layout/expandable-list/components/ExpandedFieldDisplay';
+import { t } from '@lingui/core/macro';
+import { useRef, useState } from 'react';
 import { isDefined } from 'twenty-shared/utils';
+import { isTwoFirstDepths, JsonTree } from 'twenty-ui/json-visualizer';
+import { useCopyToClipboard } from '~/hooks/useCopyToClipboard';
 
 export const JsonFieldDisplay = () => {
-  const { fieldValue, maxWidth } = useJsonFieldDisplay();
+  const { copyToClipboard } = useCopyToClipboard();
+
+  const { fieldValue, maxWidth, isRecordFieldReadOnly } = useJsonFieldDisplay();
+
+  const [isJsonTreeViewOpen, setIsJsonTreeViewOpen] = useState(false);
+  const anchorRef = useRef<HTMLDivElement>(null);
+
+  const handleClick = () => {
+    if (isRecordFieldReadOnly) {
+      setIsJsonTreeViewOpen(true);
+    }
+  };
+
+  const handleClickOutside = () => {
+    setIsJsonTreeViewOpen(false);
+  };
 
   if (!isDefined(fieldValue)) {
     return <></>;
@@ -11,5 +31,28 @@ export const JsonFieldDisplay = () => {
 
   const value = JSON.stringify(fieldValue);
 
-  return <JsonDisplay text={value} maxWidth={maxWidth} />;
+  return (
+    <>
+      <div ref={anchorRef} onClick={handleClick}>
+        <JsonDisplay text={value} maxWidth={maxWidth} />
+      </div>
+      {isJsonTreeViewOpen && (
+        <ExpandedFieldDisplay
+          anchorElement={anchorRef.current ?? undefined}
+          onClickOutside={handleClickOutside}
+        >
+          <JsonTree
+            value={fieldValue}
+            shouldExpandNodeInitially={isTwoFirstDepths}
+            emptyArrayLabel={t`Empty Array`}
+            emptyObjectLabel={t`Empty Object`}
+            emptyStringLabel={t`[empty string]`}
+            arrowButtonCollapsedLabel={t`Expand`}
+            arrowButtonExpandedLabel={t`Collapse`}
+            onNodeValueClick={copyToClipboard}
+          />
+        </ExpandedFieldDisplay>
+      )}
+    </>
+  );
 };

packages/twenty-front/src/modules/object-record/record-field/ui/meta-types/hooks/useJsonFieldDisplay.ts

@@ -7,7 +7,8 @@ import { useRecordFieldValue } from '@/object-record/record-store/hooks/useRecor
 import { FieldContext } from '../../contexts/FieldContext';
 
 export const useJsonFieldDisplay = () => {
-  const { recordId, fieldDefinition, maxWidth } = useContext(FieldContext);
+  const { recordId, fieldDefinition, maxWidth, isRecordFieldReadOnly } =
+    useContext(FieldContext);
 
   const fieldName = fieldDefinition.metadata.fieldName;
 
@@ -25,5 +26,6 @@ export const useJsonFieldDisplay = () => {
     maxWidth,
     fieldDefinition,
     fieldValue: formattedFieldValue,
+    isRecordFieldReadOnly,
   };
 };

packages/twenty-front/src/modules/ui/layout/expandable-list/components/ExpandedFieldDisplay.tsx

@@ -0,0 +1,72 @@
+import { RootStackingContextZIndices } from '@/ui/layout/constants/RootStackingContextZIndices';
+import { OverlayContainer } from '@/ui/layout/overlay/components/OverlayContainer';
+import { useListenClickOutside } from '@/ui/utilities/pointer-event/hooks/useListenClickOutside';
+import styled from '@emotion/styled';
+import { flip, FloatingPortal, offset, useFloating } from '@floating-ui/react';
+import { type ReactNode } from 'react';
+
+type ExpandedFieldDisplayProps = {
+  anchorElement?: HTMLElement;
+  children: ReactNode;
+  onClickOutside?: () => void;
+};
+
+const StyledExpandedFieldContainer = styled.div`
+  display: flex;
+  flex-direction: column;
+  gap: ${({ theme }) => theme.spacing(1)};
+  padding: ${({ theme }) => theme.spacing(2)};
+  overflow: auto;
+  box-sizing: border-box;
+  height: 300px;
+  width: 400px;
+  position: relative;
+  overflow-y: auto;
+`;
+
+const StyledContainer = styled.div`
+  display: flex;
+  z-index: ${RootStackingContextZIndices.DropdownPortalBelowModal};
+`;
+
+export const ExpandedFieldDisplay = ({
+  anchorElement,
+  children,
+  onClickOutside,
+}: ExpandedFieldDisplayProps) => {
+  const { refs, floatingStyles } = useFloating({
+    placement: 'bottom-start',
+    middleware: [
+      flip(),
+      offset({
+        mainAxis: -29,
+        crossAxis: -10,
+      }),
+    ],
+    elements: { reference: anchorElement },
+  });
+
+  useListenClickOutside({
+    refs: [refs.domReference, refs.floating],
+    callback: () => {
+      onClickOutside?.();
+    },
+    listenerId: 'expanded-field-display',
+  });
+
+  return (
+    <FloatingPortal>
+      <StyledContainer
+        ref={refs.setFloating}
+        style={floatingStyles}
+        data-globally-prevent-click-outside="true"
+      >
+        <OverlayContainer>
+          <StyledExpandedFieldContainer>
+            {children}
+          </StyledExpandedFieldContainer>
+        </OverlayContainer>
+      </StyledContainer>
+    </FloatingPortal>
+  );
+};