Fix detail view: keep title+doi in CATALOG; direct select→detail; handle all df shapes

app.py

@@ -109,10 +109,11 @@ def _load_catalog() -> pd.DataFrame:
     df["on_hf"] = df["dataset"].apply(lambda s: "✓" if s in on_hub else "")
     for col in ("n_subjects", "n_records", "n_tasks"):
         df[col] = pd.to_numeric(df[col], errors="coerce").fillna(0).astype(int)
-    for col in TABLE_COLUMNS:
+    extra = ["dataset_title", "doi"]
+    for col in TABLE_COLUMNS + extra:
         if col not in df.columns:
             df[col] = ""
-    df = df[TABLE_COLUMNS].fillna("")
+    df = df[TABLE_COLUMNS + extra].fillna("")
     return df
 
 
@@ -155,7 +156,7 @@ def _filter(
 
 
 def _render_table(df: pd.DataFrame) -> pd.DataFrame:
-    return df.rename(columns=DISPLAY_HEADERS)
+    return df[TABLE_COLUMNS].rename(columns=DISPLAY_HEADERS)
 
 
 def _snippets(slug: str, on_hf: bool) -> str:
@@ -244,11 +245,34 @@ CSS = """
 """
 
 
-def _on_select(evt: gr.SelectData, df: pd.DataFrame) -> str:
-    if df is None or df.empty:
-        return ""
-    row = df.iloc[evt.index[0]]
-    return row["Dataset"]
+def _on_select(evt: gr.SelectData, df) -> str:
+    """Return the detail markdown for the clicked row.
+
+    Bypasses ``gr.State`` so the lookup is a single hop: click → detail.
+    Handles deselection and header clicks (``evt.index`` may be ``None``)
+    and the three shapes gradio 5.x can pass the table value as (DataFrame,
+    list-of-lists, or a dict with ``headers``/``data``).
+    """
+    if evt is None or evt.index is None:
+        return "Pick a dataset row above to see details and load snippets."
+    row_idx = evt.index[0] if isinstance(evt.index, (list, tuple)) else evt.index
+    if df is None:
+        return "Pick a dataset row above to see details and load snippets."
+    if isinstance(df, pd.DataFrame):
+        if df.empty or row_idx >= len(df):
+            return "Pick a dataset row above to see details and load snippets."
+        slug = str(df.iloc[row_idx, 0])
+    elif isinstance(df, dict) and "data" in df:
+        rows = df["data"]
+        if not rows or row_idx >= len(rows):
+            return "Pick a dataset row above to see details and load snippets."
+        slug = str(rows[row_idx][0])
+    else:
+        try:
+            slug = str(df[row_idx][0])
+        except (IndexError, TypeError, KeyError):
+            return "Pick a dataset row above to see details and load snippets."
+    return _detail(CATALOG, slug)
 
 
 def _on_filter(
@@ -332,10 +356,8 @@ Library on [PyPI](https://pypi.org/project/eegdash/).
     for w in filter_inputs:
         w.change(_on_filter, filter_inputs, [table, count])
 
-    selected_slug = gr.State("")
-    table.select(_on_select, [table], [selected_slug])
-    selected_slug.change(lambda s: _detail(CATALOG, s), [selected_slug], [detail])
+    table.select(_on_select, [table], [detail])
 
 
 if __name__ == "__main__":
-    demo.launch()
+    demo.queue().launch(ssr_mode=False)