porth-kml (Plain Old Ruby Template Handler - KML output)

Adds KML (.kml) support to 'porth' (Plain Old Ruby Template Handler) gem.

This allows a view written in plain ruby to create a tree of kml objects using the ruby_kml gem and have that kml be rendered to the browser.

Requirements

Installation

Add this to your project's Gemfile and run $ bundle install

gem 'porth-kml'

Usage

Add the ".kml" mime time to your rails app's config/initializers/mime_types.rb:

Mime::Type.register "application/vnd.google-earth.kml+xml", :kml

Add ":kml" to your controller's responds_to calls, for example:

class PeopleController < ApplicationController

  respond_to :json, :xml, :kml, :html

  # GET /people
  # GET /people.json
  def index
    @people = Person.all

    respond_with @people
  end

  # GET /people/1
  # GET /people/1.json
  def show
    @person = Person.find(params[:id])

    respond_with @person
  end

Then your view must return a KMLFile object, for example:

require 'ruby_kml'

kml = KMLFile.new
folder= KML::Folder.new(:name => 'People')

@person.each do |person|
  point = KML::Point.new :coordinates => { :lat => person.latitude,
                                           :lng => person.longitude }
  place = KML::Placemark.new :geometry => point, :name => person.name
  folder.features << place
end

kml.objects << folder
kml

etc...

Dependencies

Runtime dependencies:

porth
ruby_kml
action_pack (>= 3.1) (to be consistent with porth)
active_record (>= 3.1) (to be consistent with above)

Development dependencies:

rpsec
rake

Compatibility

MRI 1.9.2+
rails >= 3.1 (to be consistent with Porth)

Contributing

Fork
Install dependancies by running $ bundle install
Write tests and code
Make sure the tests pass by running $ rake test
Push and send a pull request on GitHub

Credits

Special thanks to Tate Johnson (et al) for making Porth!