In previous steps, we have set up flask [here] and done some routing [here]. Let's now define our view.

Our view is in HTML (and with style and lots of other stuff later) and the template will be produced by an HTML expert and graphic artist, and not by a programmer. It will be in a separate place (actally a folder called "templates" to start with, and will be called up by another method in flask which says "fill in this template":

  @app.route("//")
  def greeting(folder,word):
    return render_template('person.html',surname=folder.capitalize(),
        forename=word.capitalize())

render_template needs to be loaded, so the code will also include:
  from flask import render_template

and you'll start seeing some controller code within the main file, as we use Python to manipulate teh incoming data prior to passing it across to the rendering engine. Complete application code [here] and it renders like this:


But of course that's not the full story. How did the text get placed and thr other text added? Where was the format defined? That was all in the template - that file called person.html in the templates folder. You can find the source [here]. It includes:
  <title>About {{forename}} {{surname}}</title>
and
  <h1>All (or some) about {{forename}} {{surname}}</h1>
which are our place holders and our first use of the Jinja2 templating system.
(written 2015-10-11)

 Y307 - The Flask micro webdevelopment framework for Python
  [4527] Hello Flask world / Python web micro framework - (2015-10-11)
  [4528] Routing in Flask - (2015-10-11)
  [4530] Requests in Flask - (2015-10-11)
  [4531] Jinja2 - Flask templating - (2015-10-11)
  [4532] Flask - first forms and responses with wtforms - (2015-10-12)
  [4533] Sessions in flask - (2015-10-13)
  [4534] Flask - complete MVC site to navigate around a data set - (2015-10-13)
  [4538] Flask and unittest - hello web app test world - (2015-10-15)
  [4540] Unittest of a Flask application including forms - (2015-10-15)

Back to Routing in Flask

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Forward to Requests in Flask

Flask - calling in the templating engine
Day trip to Lancaster
What does Tcl do if you try to run a command that is not defined?
Tcl - a new example for data reformatting