chore: minor clarification (#985)

Author: georgeh0

python/cocoindex/setting.py

@@ -94,8 +94,7 @@ def from_env(cls) -> Self:
 
         database_url = os.getenv("COCOINDEX_DATABASE_URL")
         if database_url is not None:
-            db_kwargs: dict[str, Any] = dict()
-            _load_field(db_kwargs, "url", "COCOINDEX_DATABASE_URL", required=True)
+            db_kwargs: dict[str, Any] = {"url": database_url}
             _load_field(db_kwargs, "user", "COCOINDEX_DATABASE_USER")
             _load_field(db_kwargs, "password", "COCOINDEX_DATABASE_PASSWORD")
             _load_field(

src/lib_context.rs

@@ -250,7 +250,7 @@ impl LibContext {
     pub fn require_persistence_ctx(&self) -> Result<&PersistenceContext> {
         self.persistence_ctx
             .as_ref()
-            .ok_or_else(|| anyhow!("Database is required for this operation. Please set COCOINDEX_DATABASE_URL environment variable and call cocoindex.init() with database settings."))
+            .ok_or_else(|| anyhow!("Database is required for this operation. Please set COCOINDEX_DATABASE_URL environment variable OR call `cocoindex.init()` with database settings."))
     }
 
     pub fn require_builtin_db_pool(&self) -> Result<&PgPool> {