Signals from TemplateRenderer

The lback.core.templating.TemplateRenderer class is responsible for loading and rendering templates, whether they are from the file system or a database. It integrates with the SignalDispatcher to emit signals throughout the template rendering process, providing detailed insights into template operations, enabling logging, performance monitoring, and custom error handling related to templates.

Signal Name	Description	Arguments (kwargs)
template_rendering_started	Emitted at the beginning of a template rendering attempt, whether from the file system or a database.	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template being rendered.<br>``context`` (Dict`[:py:class:`str, Any]): The context dictionary passed to the template.<br>``source`` (str): Indicates the source of the template (e.g., “filesystem_string”, “database”, “database_string”).
template_rendered	Emitted after a template has been successfully rendered to a string (from file system or database).	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template that was rendered.<br>``context`` (Dict`[:py:class:`str, Any]): The full context dictionary used for rendering.<br>``rendered_content`` (str): The full content of the rendered template.<br>``source`` (str): Indicates the source of the template (e.class:str): The HTTP method of the request.<br>``path`` (str): The URL path of the request.<br>``full_path`` (str): The full path including query string.<br>``duration`` (float): The total time taken to process the request in seconds.<br>``status_code`` (int or str): The HTTP status code of the final response (or ‘N/A’ if unavailable).<br>``response`` (Response, optional): The final response object generated.<br>``request`` (Request, optional): The request object that was processed.
template_rendering_failed	Emitted when a template rendering attempt fails due to a TemplateNotFound error or any other exception.	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template that failed to render.<br>``context`` (Dict`[:py:class:`str, Any]): The context dictionary passed to the template.<br>``source`` (str): Indicates the source of the template (e.g., “filesystem_string”, “database”, “database_string”).<br>``error_type`` (str): Describes the type of failure (e.g., “not_found”, “exception”, “not_found_in_db”).<br>``exception`` (Exception, optional): The exception object if the failure was due to an exception.
db_template_loading_started	Emitted when the template renderer begins an attempt to load template content from the database.	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template being loaded from the database.
db_template_loaded	Emitted after template content has been successfully loaded from the database.	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template that was loaded from the database.<br>``content`` (str): The raw content of the template loaded from the database.
db_template_load_failed	Emitted when an attempt to load template content from the database fails.	sender (TemplateRenderer): The instance of the template renderer.<br>``template_name`` (str): The name of the template that failed to load from the database.<br>``exception`` (Exception, optional): The exception object if the failure was due to an exception during loading.