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README.md

Copyright 2013 NPR. All rights reserved. No part of these materials may be reproduced, modified, stored in a retrieval system, or retransmitted, in any form or by any means, electronic, mechanical or otherwise, without prior written permission from NPR.

(Want to use this code? Send an email to nprapps@npr.org!)

nprapps' Project Template

About this template

This template provides a a project skeleton suitable for any project that is to be served entirely as flat files. Facilities are provided for rendering html from data, compiling LESS into CSS, deploying to S3, installing cron jobs on servers, copy-editing via Google Spreadsheets and a whole raft of other stuff.

Please note: This project is not intended to be a generic solution. We strongly encourage those who love the app-template to use it as a basis for their own project template. We have no plans to remove NPR-specific code from this project.

Assumptions

The following things are assumed to be true in this documentation.

  • You are running OSX.
  • You are using Python 2.7. (Probably the version that came OSX.)
  • You have virtualenv and virtualenvwrapper installed and working.

What's in here?

The project contains the following folders and important files:

  • confs -- Server configuration files for nginx and uwsgi. Edit the templates then fab <ENV> render_confs, don't edit anything in confs/rendered directly.
  • data -- Data files, such as those used to generate HTML.
  • etc -- Miscellaneous scripts and metadata for project bootstrapping.
  • jst -- Javascript (Underscore.js) templates.
  • less -- LESS files, will be compiled to CSS and concatenated for deployment.
  • templates -- HTML (Jinja2) templates, to be compiled locally.
  • tests -- Python unit tests.
  • www -- Static and compiled assets to be deployed. (a.k.a. "the output")
  • www/live-data -- "Live" data deployed to S3 via cron jobs or other mechanisms. (Not deployed with the rest of the project.)
  • www/test -- Javascript tests and supporting files.
  • app.py -- A Flask app for rendering the project locally.
  • app_config.py -- Global project configuration for scripts, deployment, etc.
  • copytext.py -- Code supporting the Editing workflow
  • crontab -- Cron jobs to be installed as part of the project.
  • fabfile.py -- Fabric commands automating setup and deployment.
  • public_app.py -- A Flask app for running server-side code.
  • render_utils.py -- Code supporting template rendering.
  • requirements.txt -- Python requirements.

Install requirements

Node.js is required for the static asset pipeline. If you don't already have it, get it like this:

brew install node
curl https://npmjs.org/install.sh | sh

Then install the project requirements:

cd teenage-diaries
npm install
mkvirtualenv teenage-diaries
pip install -r requirements.txt

Project secrets

Project secrets should never be stored in app_config.py or anywhere else in the repository. They will be leaked to the client if you do. Instead, always store passwords, keys, etc. in environment variables and document that they are needed here in the README.

Adding a template/view

A site can have any number of rendered templates (i.e. pages). Each will need a corresponding view. To create a new one:

  • Add a template to the templates directory. Ensure it extends _base.html.
  • Add a corresponding view function to app.py. Decorate it with a route to the page name, i.e. @app.route('/filename.html')
  • By convention only views that end with .html and do not start with _ will automatically be rendered when you call fab render.

Run the project locally

A flask app is used to run the project locally. It will automatically recompile templates and assets on demand.

workon teenage-diaries
python app.py

Visit localhost:8000 in your browser.

Editing workflow

IMPORTANT NOTE: Google Spreadsheets now serves up XLSX files, not the XLS file that this project expects. For now, the connection has been disabled (see the update_copy function in fabfile.py), and the project instead pulls from a spreadsheet stored in data/copy.xls.

The app is rigged up to Google Docs for a simple key/value store that provides an editing workflow.

  • If there is a column called key, there is expected to be a column called value and rows will be accessed in templates as key/value pairs
  • Rows may also be accessed in templates by row index using iterators (see below)
  • You may have any number of worksheets
  • This document must be "published to the web" using Google Docs' interface

This document is specified in app_config with the variable COPY_GOOGLE_DOC_KEY.

The app template is outfitted with a few fab utility functions that make pulling changes and updating your local data easy.

To update the latest document, simply run:

fab update_copy

Note: update_copy runs automatically whenever fab render is called.

At the template level, Jinja maintains a COPY object that you can use to access your values in the templates. Using our example sheet, to use the byline key in templates/index.html:

{{ COPY.attribution.byline }}

More generally, you can access anything defined in your Google Doc like so:

{{ COPY.sheet_name.key_name }}

You may also access rows using iterators. In this case, the column headers of the spreadsheet become keys and the row cells values. For example:

{% for row in COPY.sheet_name %}
{{ row.column_one_header }}
{{ row.column_two_header }}
{% endfor %}

Run Javascript tests

With the project running, visit localhost:8000/test/SpecRunner.html.

Run Python tests

Python unit tests are stored in the tests directory. Run them with fab tests.

Compile static assets

Compile LESS to CSS, compile javascript templates to Javascript and minify all assets:

workon teenage-diaries
fab render

(This is done automatically whenever you deploy to S3.)

Test the rendered app

If you want to test the app once you've rendered it out, just use the Python webserver:

cd www
python -m SimpleHTTPServer

Deploy to S3

fab staging master deploy

Install web services

Web services are configured in the confs/ folder. Currently, there are two: nginx.conf and uwsgi.conf.

Running fab setup will deploy your confs if you have set env.deploy_to_servers and env.deploy_web_services both to True at the top of fabfile.py.

To check that these files are being properly rendered, you can render them locally and see the results in the confs/rendered/ directory.

fab render_confs

You can also deploy the configuration files independently of the setup command by running:

fab deploy_confs

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Photo/audio-driven "Teenage Diaries Revisited" package

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