Development

docker/routlin-dash/app/factory.py

@@ -248,6 +248,25 @@ def passes(req, level):
 
 # Snapshot helpers ====================================================
 
+def _flatten_json(val, prefix):
+    """Recursively flatten a parsed JSON value into [(path, leaf_str)] pairs."""
+    if isinstance(val, dict):
+        out = []
+        for k, v in val.items():
+            out.extend(_flatten_json(v, f'{prefix}.{k}'))
+        return out
+    if isinstance(val, list):
+        out = []
+        for i, v in enumerate(val):
+            out.extend(_flatten_json(v, f'{prefix}[{i}]'))
+        return out
+    if val is None:
+        return [(prefix, None)]
+    if isinstance(val, bool):
+        return [(prefix, 'true' if val else 'false')]
+    return [(prefix, str(val))]
+
+
 def build_snap_val(changes):
     """Return a brief summary of changed field names for the history table cell."""
     if not changes:
@@ -264,11 +283,42 @@ def snap_expand_row(changes, colspan):
         return ''
     rows = ''
     for c in changes:
-        bval = c['before'] if c['before'] is not None else ''
-        aval = c['after']  if c['after']  is not None else ''
+        field       = c['field']
+        before_text = c['before']
+        after_text  = c['after']
+        vtype       = c.get('value_type', 'str')
+
+        if vtype == 'json':
+            try:
+                bval = json.loads(before_text) if before_text is not None else None
+                aval = json.loads(after_text)  if after_text  is not None else None
+                if isinstance(bval, (dict, list)) or isinstance(aval, (dict, list)):
+                    bflat = dict(_flatten_json(bval, field)) if isinstance(bval, (dict, list)) else {}
+                    aflat = dict(_flatten_json(aval, field)) if isinstance(aval, (dict, list)) else {}
+                    if bflat or aflat:
+                        seen = set()
+                        for k in list(aflat) + list(bflat):
+                            if k in seen:
+                                continue
+                            seen.add(k)
+                            bv = bflat.get(k)
+                            av = aflat.get(k)
+                            rows += (
+                                '<tr>'
+                                f'<td class="snap-expand-field">{e(k)}</td>'
+                                f'<td class="snap-expand-val">{e(bv) if bv is not None else "<em>(none)</em>"}</td>'
+                                f'<td class="snap-expand-val">{e(av) if av is not None else "<em>(none)</em>"}</td>'
+                                '</tr>'
+                            )
+                        continue
+            except Exception:
+                pass
+
+        bval = before_text if before_text is not None else ''
+        aval = after_text  if after_text  is not None else ''
         rows += (
             '<tr>'
-            f'<td class="snap-expand-field">{e(c["field"])}</td>'
+            f'<td class="snap-expand-field">{e(field)}</td>'
             f'<td class="snap-expand-val">{e(bval) if bval else "<em>(none)</em>"}</td>'
             f'<td class="snap-expand-val">{e(aval) if aval else "<em>(none)</em>"}</td>'
             '</tr>'