AxisPhilly App Template

This template helps make simple apps (like Changes in Crime by Neighborhood and A License to Blight) by baking out EJS templates into HTML, compiling SASS to CSS, linting, concatenating, and minifying (but not obfuscating!) JS, and versioning assets.

We got a lot of inspiration and guidance from the NPR Apps app-template.

This branch is setup for making fullscreen maps, which means Leaflet is included, there are helper functions in app.js, and basic layout of document is a map canvas with a header and map controls.

File and folder information

• css - compiled .scss files for development
• css\lib - vendor css files
• data - Raw data, i.e. CSVs
• js - development versions of JS files
• js\lib - vendor/library JS files, i.e. underscore.js, backbone.js, etc.
• img - images
• img\lib - images for vendor libraries, i.e. leaflet marker image
• sass - .scss files
• scripts - miscellaneous scripts used for data processing, etc.
• views - EJS templates
• www, www\css, www\js, etc - The compiled app and associated assets
• www\data - Processed data (i.e. JSON) for the app.
• build.js - Script to generate static HTML files from server.js routes. Called by Grunt shell:build task.
• Gruntfile.js - Grunt file with tasks, i.e. lint, deploy, etc.
• package.json - Node project file. We use the name attribute for the production url (i.e. http://apps.axisphilly.org/package-name) and the version attribute to version production assets.
• server.js - Express server used for development

Install Dependencies

For asset management, static view compiling, and building, we use Node.js and Grunt.

On OS X, you can use Homebrew to install Node: $ brew install node

There is also an install package for OS X and other systems available on the Node website.

Install the Grunt command line tool globally, with the command line interface: $ npm install -g grunt-cli

Install project dependencies (in the project folder): $ npm install

Development/Working locally

For local development, we use an Express server to serve files, compile SASS and render views.

To run the server: $ node server.js

Then go to http://0.0.0.0:3000 in your browser.

Add a new page

Adding a new page to the app is as simple as adding a route to the Express server and assigning it a view.

• Add a new route to Express. At the very least, you have to pass the environment variable to the view, in order to reference development/production resources respectively. For example:

    app.get('/route-name', function(req, res){
      res.render('view-name', {
        env: app.settings.env
      });
    });
  

• Then, create a new view in the view folder. The view name is the first parameter of the res.render method. The view can just be an html file, or it can use EJS templating to be more dynamic. Just make sure you pass the EJS variables to the route; which is the second parameter of the res.render method.

Building a project

grunt build compiles your project in production mode. It will lint, concatenate, and minify JS files, bake-out the EJS templates into HTML, and compile SASS to CSS.

$ grunt build

Make sure any data needed for the app is placed in www\data. Ideally, any data processing scripts should save output here.

The grunt commands can also be run independently:

• Lint JS files: $ grunt jshint
• Concatenate and minify JS files: $ grunt uglify
• Compile SASS to CSS: $ grunt sass
• Bake-out template files: $ grunt shell

Deployment

Deployment to S3 is handled by grunt. Before you deploy, do the following:

• The value of the name key in package.json will be used as the S3 folder name, so make sure it's URL compliant.
• Do not add the AWS credentials to the Gruntfile. Grunt expects environmental variables stored as AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY. Our convention is to store them in a file called .env, which you can then source to load into your environment.
• Check all the of src and dest values in the s3 grunt task upload key to make sure they are valid. The defaults are www/*, www/js/*, www/css/*, and www/data/*. Basically, they should match the folder structure of www.

Once you checked all of the above, you can deploy the app by running:

$ grunt deploy