Store points from service requests

.circleci/config.yml

@@ -12,7 +12,7 @@ jobs:
           PGHOST: localhost
           PGUSER: open311status
           RAILS_ENV: test
-      - image: postgres:10
+      - image: circleci/postgres:10-postgis
         environment:
           POSTGRES_USER: open311status
           POSTGRES_DB: open311status_test

.gitignore

@@ -15,6 +15,7 @@
 # Ignore all logfiles and tempfiles.
 /log/*.log
 /tmp
+.byebug_history
 
 # Ignore foreman environment
 .env

Gemfile

@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 ruby File.read(File.join(File.dirname(__FILE__), '.ruby-version')).strip
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
+gem 'activerecord-postgis-adapter'
 gem 'autoprefixer-rails'
 gem 'aws-sdk-s3'
 gem 'babosa'

Gemfile.lock

@@ -49,6 +49,9 @@ GEM
       activemodel (= 5.2.1)
       activesupport (= 5.2.1)
       arel (>= 9.0)
+    activerecord-postgis-adapter (5.2.1)
+      activerecord (~> 5.1)
+      rgeo-activerecord (~> 6.0)
     activestorage (5.2.1)
       actionpack (= 5.2.1)
       activerecord (= 5.2.1)
@@ -260,6 +263,10 @@ GEM
     redcarpet (3.4.0)
     request_store (1.4.1)
       rack (>= 1.4)
+    rgeo (1.1.1)
+    rgeo-activerecord (6.0.0)
+      activerecord (~> 5.0)
+      rgeo (~> 1.0)
     rspec-core (3.8.0)
       rspec-support (~> 3.8.0)
     rspec-expectations (3.8.1)
@@ -356,6 +363,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  activerecord-postgis-adapter
   annotate
   autoprefixer-rails
   aws-sdk-s3

README.md

@@ -34,17 +34,27 @@ bruhl:
   jurisdiction: 'bruehl.de'
 ```
 
+### Loading real data
+
+By default, running `db:setup` will load cities and generate fake service
+requests. To load cities, run `rake cities:load`. And to load service requests,
+`rake cities:service_requests`
+
 ### Application Dependencies
 1. Install Ruby with your ruby version manager of choice, like [rbenv](https://github.com/rbenv/rbenv) or [RVM](https://github.com/codeforamerica/howto/blob/master/Ruby.md)
 2. Check the ruby version in `.ruby-version` and ensure you have it installed locally e.g. `rbenv install 2.5.1`
 3. Install [bundler](https://bundler.io/) (the latest Heroku-compatible version): `gem install bundler`
 4. [Install Postgres](https://github.com/codeforamerica/howto/blob/master/PostgreSQL.md). If setting up Postgres.app, you will also need to add the binary to your path. e.g. Add to your `~/.bashrc`:
-`export PATH="$PATH:/Applications/Postgres.app/Contents/Versions/latest/bin"`
+`export PATH="$PATH:/Applications/Postgres.app/Contents/Versions/latest/bin"`.
+5. [Install PostGIS](https://postgis.net/install/), the Postgres geospatial extension, if it's not included in your distribution. Postgres.app comes with postgis.
 
 ### Application Setup
 
 1. Install ruby gem dependencies: `bundle install`
-2. Install node dependencies: `yarn install`
-3. Create the databases and load schema and seeds: `bin/rails db:setup`
-4. Run the tests: `bin/rspec`
-5. Run the server: `bin/rails server`, and visit the web-browser: [`http://localhost:3000`](http://localhost:3000)
+2. Create the databases and load schema and seeds: `bin/rails db:setup`
+3. Run the tests: `bin/rspec`
+4. Run the server: `bin/rails server`, and visit the web-browser: [`http://localhost:3000`](http://localhost:3000)
+
+#### Migration guide
+
+You may need to run `rake db:gis:setup` to enable PostGIS on your database.

app/models/service_request.rb

@@ -3,6 +3,7 @@
 # Table name: service_requests
 #
 #  id                 :bigint(8)        not null, primary key
+#  geometry           :geography({:srid geometry, 4326
 #  raw_data           :json
 #  requested_datetime :datetime
 #  status             :string
@@ -16,6 +17,7 @@
 #
 #  index_service_requests_on_city_id                         (city_id)
 #  index_service_requests_on_city_id_and_service_request_id  (city_id,service_request_id) UNIQUE
+#  index_service_requests_on_geometry                        (geometry) USING gist
 #  index_service_requests_on_status                          (status)
 #
 
@@ -34,6 +36,7 @@ def raw_data=(json)
       self[:status] = json['status']
       self[:requested_datetime] = DateTime.iso8601(json['requested_datetime']) if json['requested_datetime'].present?
       self[:updated_datetime] = DateTime.iso8601(json['updated_datetime']) if json['updated_datetime'].present?
+      self[:geometry] = "POINT(#{json['long']} #{json['lat']})" if json['lat'].present?
     end
   rescue => e
     Raven.capture_exception e,

config/database.yml

@@ -1,5 +1,5 @@
 defaults: &defaults
-  adapter: postgresql
+  adapter: postgis
   encoding: unicode
   pool: 20
   username: <%= ENV['POSTGRES_USERNAME'] || ENV['USER'] %>
@@ -20,3 +20,4 @@ staging:
 production:
   database: open311status_production
   <<: *defaults
+  url: <%= ENV.fetch("DATABASE_URL", "").gsub(/postgres/, 'postgis') %>

db/migrate/20180819143420_add_geometry_to_service_requests.rb

@@ -0,0 +1,8 @@
+class AddGeometryToServiceRequests < ActiveRecord::Migration[5.2]
+  def change
+    enable_extension "postgis"
+
+    add_column :service_requests, :geometry, :geometry, geographic: true
+    add_index :service_requests, :geometry, using: :gist
+  end
+end

db/schema.rb

@@ -14,6 +14,7 @@
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
+  enable_extension "postgis"
 
   create_table "cities", force: :cascade do |t|
     t.string "slug"
@@ -53,8 +54,10 @@
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer "city_id"
+    t.geography "geometry", limit: {:srid=>4326, :type=>"geometry", :geographic=>true}
     t.index ["city_id", "service_request_id"], name: "index_service_requests_on_city_id_and_service_request_id", unique: true
     t.index ["city_id"], name: "index_service_requests_on_city_id"
+    t.index ["geometry"], name: "index_service_requests_on_geometry", using: :gist
     t.index ["status"], name: "index_service_requests_on_status"
   end
 

spec/factories/service_requests.rb

@@ -10,6 +10,8 @@
       service_name { Faker::Commerce.department(2, true) }
       description { Faker::Lorem.paragraph(1, false, 5) }
       requested_datetime { 10.minutes.ago }
+      lat { Faker::Address.latitude }
+      long { Faker::Address.longitude }
     end
 
     raw_data do
@@ -19,6 +21,8 @@
         'description' => description,
         'status' => status,
         'requested_datetime' => requested_datetime.iso8601,
+        'lat' => lat,
+        'long' => long,
       }
     end
   end

spec/models/service_request_spec.rb

@@ -24,6 +24,11 @@
     it 'extracts :updated_datetime' do
       expect(sr.updated_datetime).to eq DateTime.iso8601 json['updated_datetime']
     end
+
+    it 'extracts a point' do
+      expect(sr.geometry.lat).to eq json['lat']
+      expect(sr.geometry.lon).to eq json['long']
+    end
   end
 
   describe '#slug' do