A minimal demo of Eve and Restangular.

I am trying to come to grips with Eve and Restangular.

I will report my progress in this repository so it can help others following my same path.

First I went through all the steps to quick-start Eve: http://python-eve.org/quickstart.html

To be able go through the quickstart I have completed these steps:

• I downloaded mongodb on my computer. Inside, there was a bin folder.
• I got a running daemon of mongodb. For that I had to do this:
  • I had to create a database folder: ~/Documents/mongodatabase
  • Under bin I have to run this command: ./mongod --dbpath ~/Documents/mongodatabase
• I installed Eve on my computer.
• Along the quickstart, Eve created a "table" named people.
• I read a few things about http.
• I read about curl.
• Using curl, I created two "documents" inside people: Obama and Romney. It felt like magic.

So what then?

Then I wanted to develop an basic CRUD app, using Restangular.

The making of a static web server

But I am not too skilled with web servers, Flask, etc, so the html had to be served by Eve itself. How? I had to read a bit about flask and finally came across this little trick! https://groups.google.com/d/msg/python-eve/Ay9sYD_V23Q/BmxweQUeWX8J

It works! Eve is serving my html.

OK, to continue with the Restangular part, I learned a bit about angular.js here: http://www.w3schools.com/angular/

And now I am dabbling with https://github.com/mgonto/restangular

So far I have managed to list all the people and add new people, BUT I AM STILL FIGURING OUT HOW TO DELETE AND EDIT.

Making a verbose log.

I need to understand Restangular a little further, for that I need Eve to show in console the http request from Restangular. I asked Nicola Iarocci, the creator of Eve, and he just answered me:

"You should probably give a look at Flask logging tutorial at http://flask.pocoo.org/docs/0.10/errorhandling/

Eve is just a Flask application so whatever works with Flask works with Eve’s app too.

HTH"

I have been studying that logging, even proposed a fix in werkzeug: https://github.com/jjdenis/werkzeug/tree/curl_logging.

But I also submitted a question to flask@librelist.com. And David Nieder gave me a quick and dirty trick (I am beginning to love this): http://librelist.com/browser//flask/2015/3/14/show-full-http-request-and-response-on-console/

So I had Eve logging the requests, great!

The next thing I needed was to log the resource when it is json, and I have tried to log it gracefully, using pprint and wrap.

$ python run-demo.py 
* Running on http://127.0.0.1:5000/
* Restarting with reloader

> GET http://127.0.0.1:5000/
> Content-Length:
> User-Agent: curl/7.30.0
> Host: 127.0.0.1:5000
> Accept: */*
> Content-Type:
 
< 404 NOT FOUND
< Content-Type: application/json
< Content-Length: 179
< {u'_error': {u'code': 404,
<              u'message': u'The requested URL was not found on the server.  If
                             you entered the URL manually please check your
                             spelling and try again.'},
<  u'_status': u'ERR'}
127.0.0.1 - - [17/Mar/2015 09:29:18] "GET / HTTP/1.1" 404 -

Making Update and Delete work

I can see Restangular is not using ETags at all.

I also found that by doing this in Eve...

IF_MATCH = False

...I got Delete to work, but concurrency control gets disabled (the Etags are not used by Eve)

I have to find out why Update doesn't work and how to enable ETags in Restangular.

If you want to run this demo

Try the following steps:

• Get the quickstart running.
• Stop the quickstart run.py, but leave mongodb running
• Fork this project onto your computer.
• Run this demo: python run-demo.py
• In your browser, go to http://127.0.0.1:5000/static/index.html