# Working with the Browsable API API may stand for Application *Programming* Interface, but humans have to be able to read the APIs, too; someone has to do the programming. Django REST Framework supports generating human-friendly HTML output for each resource when the `HTML` format is requested. These pages allow for easy browsing of resources, as well as forms for submitting data to the resources using `POST`, `PUT`, and `DELETE`. ## URLs If you include fully-qualified URLs in your resource output, they will be 'urlized' and made clickable for easy browsing by humans. The `djangorestframework` package includes a [`reverse`][drfreverse] helper for this purpose. ## Formats By default, the API will return the format specified by the headers, which in the case of the browser is HTML. The format can be specified using `?format=` in the request, so you can look at the raw JSON response in a browser by adding `?format=json` to the URL. There are helpful extensions for viewing JSON in [Firefox][ffjsonview] and [Chrome][chromejsonview]. ## Customizing To customize the look-and-feel, create a template called `api.html` and add it to your project, eg: `templates/djangorestframework/api.html`, that extends the `djangorestframework/base.html` template. The included browsable API template is built with [Bootstrap (2.1.1)][bootstrap], making it easy to customize the look-and-feel. ### Theme To replace the theme wholesale, add a `bootstrap_theme` block to your `api.html` and insert a `link` to the desired Bootstrap theme css file. This will completely replace the included theme. {% block bootstrap_theme %} {% endblock %} A suitable replacement theme can be generated using Bootstrap's [Customize Tool][bcustomize]. Also, there are pre-made themes available at [Bootswatch][bswatch]. To use any of the Bootswatch themes, simply download the theme's `bootstrap.min.css` file, add it to your project, and replace the default one as described above. You can also change the navbar variant, which by default is `navbar-inverse`, using the `bootstrap_navbar_variant` block. The empty `{% block bootstrap_navbar_variant %}{% endblock %}` will use the original Bootstrap navbar style. For more specific CSS tweaks, use the `extra_style` block instead. ### Blocks All of the blocks available in the browsable API base template that can be used in your `api.html`. * `blockbots` - `` tag that blocks crawlers * `bodyclass` - (empty) class attribute for the `` * `bootstrap_theme` - CSS for the Bootstrap theme * `bootstrap_navbar_variant` - CSS class for the navbar * `branding` - section of the navbar, see [Bootstrap components][bcomponentsnav] * `breadcrumbs` - Links showing resource nesting, allowing the user to go back up the resources. It's recommended to preserve these, but they can be overridden using the breadcrumbs block. * `extrastyle` - (empty) extra CSS for the page * `extrahead` - (empty) extra markup for the page `` * `footer` - Any copyright notices or similar footer materials can go here (by default right-aligned) * `global_heading` - (empty) Use to insert content below the header but before the breadcrumbs. * `title` - title of the page * `userlinks` - This is a list of links on the right of the header, by default containing login/logout links. To add links instead of replace, use {{ block.super }} to preserve the authentication links. #### Components All of the [Bootstrap components][bcomponents] are available. ##### Tooltips The browsable API makes use of the Bootstrap tooltips component. Any element with the `js-tooltip` class and a `title` attribute has that title content displayed in a tooltip on hover after a 1000ms delay. ### Advanced Customization #### Context The context that's available to the template: * `allowed_methods` : A list of methods allowed by the resource * `api_settings` : The API settings * `available_formats` : A list of formats allowed by the resource * `breadcrumblist` : The list of links following the chain of nested resources * `content` : The content of the API response * `description` : The description of the resource, generated from its docstring * `name` : The name of the resource * `post_form` : A form instance for use by the POST form (if allowed) * `put_form` : A form instance for use by the PUT form (if allowed) * `request` : The request object * `response` : The response object * `version` : The version of Django REST Framework * `view` : The view handling the request * `FORMAT_PARAM` : The view can accept a format override * `METHOD_PARAM` : The view can accept a method override #### Not using base.html For more advanced customization, such as not having a Bootstrap basis or tighter integration with the rest of your site, you can simply choose not to have `api.html` extend `base.html`. Then the page content and capabilities are entirely up to you. [drfreverse]: ../api-guide/reverse.md [ffjsonview]: https://addons.mozilla.org/en-US/firefox/addon/jsonview/ [chromejsonview]: https://chrome.google.com/webstore/detail/chklaanhfefbnpoihckbnefhakgolnmc [bootstrap]: http://getbootstrap.com [bcustomize]: http://twitter.github.com/bootstrap/customize.html#variables [bswatch]: http://bootswatch.com/ [bcomponents]: http://twitter.github.com/bootstrap/components.html [bcomponentsnav]: http://twitter.github.com/bootstrap/components.html#navbar