refactor(templating): update template context and middleware

- Add template_context import to __init__.py
- Improve TemplateEngine class structure
- Update TemplateContextMiddleware to use base_app.url_for

Author: TechWithDunamix

nexios/templating/__init__.py

@@ -11,6 +11,7 @@
 from nexios.config import MakeConfig, get_config
 from nexios.http.response import HTMLResponse
 from nexios.types import Request
+from .middleware import template_context
 
 engine: Union["TemplateEngine", None] = None
 
@@ -30,6 +31,7 @@ def __init__(
         custom_filters: Dict[str, Callable[[Any], Any]] = {},
         custom_globals: Dict[str, Any] = {},
     ):
+
         super().__init__(
             {
                 "template_dir": template_dir,
@@ -67,12 +69,12 @@ def setup_environment(self, config: Optional[TemplateConfig] = None):
             lstrip_blocks=self.config.lstrip_blocks,
         )
 
+
         config_ = self.config.to_dict()
         if config_.get("custom_filters"):
             self.env.filters.update(config_["custom_filters"])
         if config_.get("custom_globals"):
             self.env.globals.update(config_["custom_globals"])
-
         engine = self
 
     async def render(

nexios/templating/middleware.py

@@ -42,7 +42,7 @@ async def __call__(
         context.update(
             {
                 "request": request,
-                "url_for": request.app.url_for,
+                "url_for": request.base_app.url_for,
                 "csrf_token": request.state.csrf_token,
             }
         )