fix: Raise on data mismatch in str.json_decode (#19347)

pola-rs · Oct 22, 2024 · c6b2329 · c6b2329
1 parent 11bd08e
commit c6b2329
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Showing 6 changed files with 283 additions and 86 deletions.
diff --git a/crates/polars-io/src/json/mod.rs b/crates/polars-io/src/json/mod.rs
@@ -287,6 +287,8 @@ where
                     }
                 }
 
+                let allow_extra_fields_in_struct = self.schema.is_some();
+
                 // struct type
                 let dtype = if let Some(mut schema) = self.schema {
                     if let Some(overwrite) = self.schema_overwrite {
@@ -338,7 +340,11 @@ where
                     dtype
                 };
 
-                let arr = polars_json::json::deserialize(&json_value, dtype)?;
+                let arr = polars_json::json::deserialize(
+                    &json_value,
+                    dtype,
+                    allow_extra_fields_in_struct,
+                )?;
                 let arr = arr.as_any().downcast_ref::<StructArray>().ok_or_else(
                     || polars_err!(ComputeError: "can only deserialize json objects"),
                 )?;