Templating.

Batman wanted to quickly render html pages on the website. He wanted to use a templating engine to render the html pages. Robyn told him that he can use the Jinja2 templating engine to render the html pages. He can use the JinjaTemplate class to render the html pages.

Batman was excited to learn that he could add events as functions as well as decorators.

Request

GET

/hello_world

from robyn.templating import JinjaTemplate

current_file_path = pathlib.Path(__file__).parent.resolve()
JINJA_TEMPLATE = JinjaTemplate(os.path.join(current_file_path, "templates"))

@app.get("/template_render")
def template_render():
    context = {"framework": "Robyn", "templating_engine": "Jinja2"}

    template = JINJA_TEMPLATE.render_template(template_name="test.html", **context)
    return template

test.html file

Request

GET

/hello_world

  <!DOCTYPE html>
  <html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Results</title>
  </head>

  <body>
   Hello {{ framework }}! You're using {{ templating_engine }}.
  </body>

Supporting Custom Templating Engines

Batman was also super excited to know that Robyn allows the support of custom templating engines.

To do that, you need to import the TemplateInterface from robyn.templating

Request

GET

/hello_world

from robyn.templating import TemplateInterface

Then You need to have a render_template method inside your implementation. So, an example would look like the following:

Request

GET

/hello_world

class JinjaTemplate(TemplateInterface):
  def __init__(self, directory, encoding="utf-8", followlinks=False):
      self.env = Environment(
          loader=FileSystemLoader(
              searchpath=directory, encoding=encoding, followlinks=followlinks
          )
      )

  def render_template(self, template_name, **kwargs):
      return self.env.get_template(template_name).render(**kwargs)

What's next?

Now, batman wanted to have an ability to upload files to the server if any new villain appeared. Robyn introduced him to the file uploads feature.

File Uploads