Add example app

[Kijewski]

I thought: We explain a lot in the book, use all functions in the tests, but we have no real example application so you can see rinja in action in a half-way realistic setting.

Todo:

• write a README
• add some comments in the source
• adding a french translation in the templates

If that is a good example, I don't know. I was too lazy to write the ubiquitous TODO-app example.

[GuillaumeGomez]

It's a very good idea! And basically, any example is better than no examples. 😉

[GuillaumeGomez]

One question: shouldn't it be == and also else if following?

[GuillaumeGomez]

Suggested change

	<li><a href="{{ req.url_for("index_handler", [Lang::en])? }}">This page in English</a></li>
	<li><a href="{{ req.url_for("index_handler", [Lang::en])? }}">This page is in English.</a></li>

[Kijewski]

Thank you for the translations! :)

In the bottom line I wanted to list links to all languages that are currently not selected, that's why I used if != without an else:

[GuillaumeGomez]

Why not using an array then?

[Kijewski]

Why not using an array then?

Sorry, I don't follow. What array?

[GuillaumeGomez]

Nevermind. However, there is duplicated code between index.html and greet.html. Why not putting them into a "footer.html" file or equivalent and include it?

[Kijewski]

I made the language selection footer a macro, to show that we have macros and how to use them. An include would possibly be more conventional, but I thought the might be a good case to show another feature. What do you think?

[GuillaumeGomez]

I think it's a good idea. Well done!

[Kijewski]

Thanks! And thank you for your reviews! :)