Ruby script to export a SimpleGeo Layer to CSV

gistfile1.rb

# The following script allows to export a SimpleGeo Storage layer to a CSV
# You have to change the credentials and the layer that you want to export
# It will generate a CSV file with the name of the layer
#
# Author: Javier de la Torre (jatorre@vizzuality.com @jatorre)

#Adapt the following to your SimpleGeo credentials. Get it from the UI.
oauth_token="token"
oauth_secret="secret"

#Layer to be exported
sg_layer="com.your.layer"




#-----------------
require 'rubygems'
require 'simplegeo'
require 'csv'

SimpleGeo::Client.set_credentials(oauth_token, oauth_secret)

CSV.open("#{sg_layer.gsub(".","_")}.csv", "wb") do |csv|
  next_cursor=""
  header=false
  #loop until next_cursor is nil  (pagination)
  #the query basically look for all records within the whole world as I couldnt find a way to download a full layer
  while next_cursor do 
    puts "."
    res = SimpleGeo::Client.get_nearby_records(sg_layer, 
        :lat => 0,:lon => 0, :bbox=>'-90,-180,90,180', :limit=>500,:cursor=>next_cursor)
    next_cursor = res[:next_cursor]
    res[:records].each do |row|
  
    #add headers
    if !header
      csv << ["id", "lat", "lon","created"] + row[:record].properties.keys.map(&:to_s) - ["layer"]
      header=true
    else
    #add records  
      csv << [row[:record].id,row[:record].lat,row[:record].lon, row[:record].created.strftime("%Y-%m-%d %H:%M:%S")] + 
        row[:record].properties.values - [sg_layer]
    end    
    
    end
  end
end