# Templating - Jinja2Templates¶

You can use the `Jinja2Templates` class to render Jinja templates.

Read more about it in the [FastAPI docs for Templates](/guides/advanced-user-guide-templates).

You can import it directly from `fastapi.templating`:

```
from fastapi.templating import Jinja2Templates
```

## fastapi.templating.Jinja2Templates [¶](#fastapitemplatingjinja2templates-)

```
Jinja2Templates(
    directory: (
        str | PathLike[str] | Sequence[str | PathLike[str]]
    ),
    *,
    context_processors: (
        list[Callable[[Request], dict[str, Any]]] | None
    ) = None
)
```

```
Jinja2Templates(
    *,
    env: Environment,
    context_processors: (
        list[Callable[[Request], dict[str, Any]]] | None
    ) = None
)
```

```
Jinja2Templates(
    directory=None, *, context_processors=None, env=None
)
```

Jinja2 template renderer.

:::accordion{title="Example" open="true"}
```
from starlette.templating import Jinja2Templates

templates = Jinja2Templates(directory="templates")

async def homepage(request: Request) -> Response:
    return templates.TemplateResponse(request, "index.html")
```
:::

:::accordion{title="Source code in starlette/templating.py"}
```
def __init__(
    self,
    directory: str | PathLike[str] | Sequence[str | PathLike[str]] | None = None,
    *,
    context_processors: list[Callable[[Request], dict[str, Any]]] | None = None,
    env: jinja2.Environment | None = None,
) -> None:
    assert bool(directory) ^ bool(env), "either 'directory' or 'env' arguments must be passed"
    self.context_processors = context_processors or []
    if directory is not None:
        loader = jinja2.FileSystemLoader(directory)
        self.env = jinja2.Environment(loader=loader, autoescape=jinja2.select_autoescape())
    elif env is not None:  # pragma: no branch
        self.env = env

    self._setup_env_defaults(self.env)
```
:::

### context\_processors `instance-attribute` [¶](#contextprocessors-instance-attribute-)

```
context_processors = context_processors or []
```

### env `instance-attribute` [¶](#env-instance-attribute-)

```
env = Environment(
    loader=loader, autoescape=select_autoescape()
)
```

### get\_template [¶](#gettemplate-)

```
get_template(name)
```

```title="Source code in starlette/templating.py"
def get_template(self, name: str) -> jinja2.Template:
    return self.env.get_template(name)
```

### TemplateResponse [¶](#templateresponse-)

```
TemplateResponse(
    request,
    name,
    context=None,
    status_code=200,
    headers=None,
    media_type=None,
    background=None,
)
```

Render a template and return an HTML response.

| PARAMETER     | DESCRIPTION                                                                                              |
| ------------- | -------------------------------------------------------------------------------------------------------- |
| `request`     | The incoming request instance. **TYPE:** `Request`                                                       |
| `name`        | The template file name to render. **TYPE:** `str`                                                        |
| `context`     | Variables to pass to the template. **TYPE:** `dict[str, Any] \| None` **DEFAULT:** `None`                |
| `status_code` | HTTP status code for the response. **TYPE:** `int` **DEFAULT:** `200`                                    |
| `headers`     | Additional headers to include in the response. **TYPE:** `Mapping[str, str] \| None` **DEFAULT:** `None` |
| `media_type`  | Media type for the response. **TYPE:** `str \| None` **DEFAULT:** `None`                                 |
| `background`  | Background task to run after response is sent. **TYPE:** `BackgroundTask \| None` **DEFAULT:** `None`    |

| RETURNS             | DESCRIPTION                                          |
| ------------------- | ---------------------------------------------------- |
| `_TemplateResponse` | An HTML response with the rendered template content. |

:::accordion{title="Source code in starlette/templating.py"}
```
def TemplateResponse(
    self,
    request: Request,
    name: str,
    context: dict[str, Any] | None = None,
    status_code: int = 200,
    headers: Mapping[str, str] | None = None,
    media_type: str | None = None,
    background: BackgroundTask | None = None,
) -> _TemplateResponse:
    """
    Render a template and return an HTML response.

    Args:
        request: The incoming request instance.
        name: The template file name to render.
        context: Variables to pass to the template.
        status_code: HTTP status code for the response.
        headers: Additional headers to include in the response.
        media_type: Media type for the response.
        background: Background task to run after response is sent.

    Returns:
        An HTML response with the rendered template content.
    """
    context = context or {}

    context.setdefault("request", request)
    for context_processor in self.context_processors:
        context.update(context_processor(request))

    template = self.get_template(name)
    return _TemplateResponse(
        template,
        context,
        status_code=status_code,
        headers=headers,
        media_type=media_type,
        background=background,
    )
```
:::

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