update filters

app.py

@@ -37,21 +37,37 @@ df = get_data()
 # Streamlit UI
 st.title("🌍 CGD Survey Explorer (Live DB)")
 
-st.sidebar.header("🔎 Filter Questions")
-selected_country = st.sidebar.selectbox("Select Country", sorted(df["country"].unique()))
-selected_year = st.sidebar.selectbox("Select Year", sorted(df["year"].unique()))
+# Multiselect filters (defaults = empty, shows all if none selected)
+country_options = sorted(df["country"].dropna().unique())
+year_options = sorted(df["year"].dropna().unique())
+
+selected_countries = st.sidebar.multiselect("Select Country/Countries", country_options)
+selected_years = st.sidebar.multiselect("Select Year(s)", year_options)
+
 keyword = st.sidebar.text_input("Keyword Search", "")
 
-# Filtered data
+# Apply filters
 filtered = df[
-    (df["country"] == selected_country) &
-    (df["year"] == selected_year) &
+    (df["country"].isin(selected_countries) if selected_countries else True) &
+    (df["year"].isin(selected_years) if selected_years else True) &
     (df["question_text"].str.contains(keyword, case=False, na=False))
 ]
 
-st.markdown(f"### Results for **{selected_country}** in **{selected_year}**")
-st.dataframe(filtered[["country", "question_text", "answer_text"]])
+# Generate dynamic subheading
+heading_parts = []
+if selected_countries:
+    heading_parts.append("Countries: " + ", ".join(selected_countries))
+if selected_years:
+    heading_parts.append("Years: " + ", ".join(map(str, selected_years)))
+if heading_parts:
+    st.markdown("### Results for " + " | ".join(heading_parts))
+else:
+    st.markdown("### Results for All Countries and Years")
+
+# Display results including answer_text
+st.dataframe(filtered[["country", "year", "question_text", "answer_text"]])
 
+# Empty result message
 if filtered.empty:
     st.info("No matching questions found.")