By default, flatpages are rendered via the template flatpages/default.html, but you can override that for a particular flatpage: in the admin, a collapsed fieldset titled “Advanced options” (clicking will expand it) contains a field for specifying a template name. If you’re creating a flat page via the Python API you can simply set the template name as the field template_name on the FlatPageobject.
Creating the flatpages/default.html template is your responsibility; in your template directory, just create a flatpagesdirectory containing a file default.html.
Flatpage templates are passed a single context variable, flatpage, which is the flatpage object.
Here’s a sample flatpages/default.html template: