UK Planning Scraper

PRE-ALPHA: Only works with Idox and Northgate sites and spews a lot of stuff to STDOUT. Not for production use.

This gem scrapes planning applications data from UK council/local planning authority websites, eg Westminster City Council. Data is returned as an array of hashes, one hash for each planning application.

This scraper gem doesn’t use a database. Storing the output is up to you. It’s just a convenient way to get the data.

Currently this only works for Idox and Northgate sites. The ultimate aim is to provide a consistent interface in a single gem for all variants of all planning systems: Idox Public Access, Northgate Planning Explorer, OcellaWeb, Agile Planning and all the one-off systems.

This project is not affiliated with any organisation.

Installation

Add this line to your application’s Gemfile:

gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install specific_install
$ gem specific_install adrianshort/uk_planning_scraper

Usage

First, require your stuff

require 'uk_planning_scraper'
require 'pp'

Scrape from a council

apps = UKPlanningScraper::Authority.named('Westminster').scrape({ decided_days: 7 })
pp apps

Scrape from a bunch of councils

auths = UKPlanningScraper::Authority.tagged('london')

auths.each do |auth|
  apps = auth.scrape({ decided_days: 7 })
  pp apps # You'll probably want to save `apps` to your database here
end

Yes, we just scraped the last week’s planning decisions across the whole of London (actually 23 of the 35 authorities right now) with five lines of code.

Satisfy your niche interests

auths = UKPlanningScraper::Authority.tagged('scotland')

auths.each do |auth|
  apps = auth.scrape({ validated_days: 7, keywords: 'launderette' })
  pp apps # You'll probably want to save `apps` to your database here
end

### More search parameters

# Don't try these all at once
params = {
  received_to: Date.today,
  received_from: Date.today - 30,
  received_days: 7, # instead of received_to, received_from
  validated_to: Date.today,
  validated_from: Date.today - 30,
  validated_days: 7, # instead of validated_to, validated_from
  decided_to: Date.today,
  decided_from: Date.today - 30,
  decided_days: 7 # instead of decided_to, decided_from
  keywords: "hip gable", # Check that the systems you're scraping return the results you expect for multiple keywords (AND or OR?)
}

apps = UKPlanningScraper::Authority.named('Camden').scrape(params)

Save to a SQLite database

This gem has no interest whatsoever in persistence. What you do with the data it outputs is up to you: relational databases, document stores, VHS and clay tablets are all blissfully none of its business. But using the ScraperWiki gem is a really easy way to store your data:

require 'scraperwiki' # Must be installed, of course
ScraperWiki.save_sqlite([:authority_name, :council_reference], apps)

That apps param can be a hash or an array of hashes, which is what gets returned by our search().

Find authorities by tag

Tags are always lowercase and one word.

london_auths = UKPlanningScraper::Authority.tagged('london')

We’ve got tags for areas:

• london
• innerlondon
• outerlondon
• northlondon
• southlondon
• surrey
• wales

and software systems:

• idox
• northgate

and whatever you’d like to add that would be useful to others.

More fun with Authority tags

UKPlanningScraper::Authority.named('Merton').tags
# => ["london", "outerlondon", "southlondon", "england", "northgate", "londonboroughs"]

UKPlanningScraper::Authority.not_tagged('london')
# => [...]

UKPlanningScraper::Authority.named('Islington').tagged?('southlondon')
# => false

List all authorities

UKPlanningScraper::Authority.all.each { |a| puts a.name }

List all tags

pp UKPlanningScraper::Authority.tags

Add your favourite local planning authorities

The list of authorities is in a CSV file in /lib/uk_planning_scraper:

https://github.com/adrianshort/uk_planning_scraper/blob/master/lib/uk_planning_scraper/authorities.csv

The easiest way to add to or edit this list is to edit within GitHub (use the pencil icon) and create a new pull request for your changes. If accepted, your changes will be available to everyone with the next version of the gem.

The file format is one line per authority, with comma-separated:

• Name (omit “the”, “council”, “borough of”, “city of”, etc. and write “and” not “&", except for City of London which is a special case)
• URL of the search form (use the advanced search URL if there is one)
• Tags (use as many comma-separated tags as is reasonable, lowercase and all one word.)

Currently only Idox and Northgate scrapers work but feel free to add authorities that use other systems, along with appropriate system tags like ocellaweb and agileplanning. This gem selects the appropriate scraper by examining the URL not by looking at the tags, so it doesn’t matter what you use as long as it’s consistent with others.

Please check the tag list before you change anything:

pp UKPlanningScraper::Authority.tags

Development

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/adrianshort/uk_planning_scraper.