class GeocoderController < ApplicationController
layout 'site'
+ require 'uri'
require 'net/http'
require 'rexml/document'
def search
- res_hash = {}
+ if params[:postcode] and not params[:postcode].empty?
+ check_postcode(params[:postcode])
+ elsif params[:query][:postcode] and not params[:query][:postcode].empty?
+ check_postcode(params[:query][:postcode])
+ elsif params[:query][:place_name]
+ redirect_to :controller => 'geocoder', :action => 'results', :params => {:place_name => params[:query][:place_name]}
+ end
+ end
+
+ def check_postcode(p)
+
@postcode_arr = []
- @res_ary = []
+ postcode = p.upcase
+ escaped_postcode = postcode.sub(/\s/,'%20')
- if params[:query][:postcode]
- postcode = params[:query][:postcode]
+ begin
if postcode.match(/(^\d{5}$)|(^\d{5}-\d{4}$)/)
- #its a zip code - do something
- else
- Net::HTTP.start('www.freethepostcode.org') do |http|
- resp = http.get("/geocode?postcode=#{postcode}")
- lat = resp.body.scan(/[4-6][0-9]\.?[0-9]+/)
- lon = resp.body.scan(/[-+][0-9]\.?[0-9]+/)
- @postcode_array = [lat, lon]
- redirect_to "/index.html?lat=#{@postcode_array[0]}&lon=#{@postcode_array[1]}&zoom=14"
+ # Its a zip code - ask geocoder.us
+ # (They have a non commerical use api)
+ Net::HTTP.start('rpc.geocoder.us') do |http|
+ resp = http.get("/service/csv?zip=#{postcode}")
+ if resp.body.match(/couldn't find this zip/)
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_zip_code"
+ return
+ end
+ data = resp.body.split(/, /) # lat,long,town,state,zip
+ lat = data[0]
+ lon = data[1]
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
+ return
end
- end
- else
- if params[:query][:place_name] != nil or ""
- place_name = params[:query][:place_name]
+ elsif postcode.match(/^([A-Z]{1,2}\d+[A-Z]?\s*\d[A-Z]{2})/)
+ # It matched our naive UK postcode regexp
+ # Ask npemap to do a combined npemap + freethepostcode search
+ Net::HTTP.start('www.npemap.org.uk') do |http|
+ resp = http.get("/cgi/geocoder.fcgi?format=text&postcode=#{escaped_postcode}")
+ dataline = resp.body.split(/\n/)[1]
+ data = dataline.split(/,/) # easting,northing,postcode,lat,long
+ lat = data[3]
+ lon = data[4]
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
+ return
+ end
+ elsif postcode.match(/^[A-Z]\d[A-Z]\s*\d[A-Z]\d/)
+ # It's a canadian postcode
+ # Ask geocoder.ca (note - they have a per-day limit)
+ postcode = postcode.sub(/\s/,'')
+ Net::HTTP.start('geocoder.ca') do |http|
+ resp = http.get("?geoit=XML&postal=#{postcode}")
+ data_lat = resp.body.slice(/latt>.*?</)
+ data_lon = resp.body.slice(/longt>.*?</)
+ lat = data_lat.split(/[<>]/)[1]
+ lon = data_lon.split(/[<>]/)[1]
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
+ return
+ end
+ elsif postcode.match(/(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW]) [0-9][ABD-HJLNP-UW-Z]{2})
+ /)
+ #its a UK postcode
+ begin
+ Net::HTTP.start('www.freethepostcode.org') do |http|
+ resp = http.get("/geocode?postcode=#{postcode}")
+ lat = resp.body.scan(/[4-6][0-9]\.?[0-9]+/)
+ lon = resp.body.scan(/[-+][0-9]\.?[0-9]+/)
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
+ return
+ end
+ rescue
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode"
+ #redirect to somewhere else
+ end
+ elsif
+ # Some other postcode / zip code
+ # Throw it at geonames, and see if they have any luck with it
Net::HTTP.start('ws.geonames.org') do |http|
- res = http.get("/search?q=#{place_name}&maxRows=10")
- xml = REXML::Document.new(res.body)
- xml.elements.each("geonames/geoname") do |ele|
- res_hash = {}
- ele.elements.each("name"){ |n| res_hash['name'] = n.text }
- ele.elements.each("countryCode"){ |n| res_hash['country_code'] = n.text }
- ele.elements.each("countryNode"){ |n| res_hash['country_name'] = n.text }
- ele.elements.each("lat"){ |n| res_hash['lat'] = n.text }
- ele.elements.each("lng"){ |n| res_hash['lon']= n.text }
- @res_ary << res_hash
- end
+ resp = http.get("/postalCodeSearch?postalcode=#{escaped_postcode}&maxRows=1")
+ hits = resp.body.slice(/totalResultsCount>.*?</).split(/[<>]/)[1]
+ if hits == "0"
+ # Geonames doesn't know, it's probably wrong
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode_or_zip"
+ return
+ end
+ data_lat = resp.body.slice(/lat>.*?</)
+ data_lon = resp.body.slice(/lng>.*?</)
+ lat = data_lat.split(/[<>]/)[1]
+ lon = data_lon.split(/[<>]/)[1]
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
end
+ else
+ # Some other postcode / zip file
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode_or_zip"
+ return
end
- redirect_to :controller => 'geocoder', :action => 'results', :params => @res_ary
+ rescue
+ #Its likely that an api is down
+ redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "api_down"
end
end
- def result
- @res = :params[@res_ary]
+ def results
+ @place_name = params[:place_name]
+ res_hash = {}
+ @res_ary = []
+ begin
+ Net::HTTP.start('ws.geonames.org') do |http|
+ res = http.get("/search?q=#{URI.escape(@place_name)}&maxRows=10")
+ xml = REXML::Document.new(res.body)
+ xml.elements.each("geonames/geoname") do |ele|
+ res_hash = {}
+ ele.elements.each("name"){ |n| res_hash['name'] = n.text }
+ ele.elements.each("countryCode"){ |n| res_hash['countrycode'] = n.text }
+ ele.elements.each("countryName"){ |n| res_hash['countryname'] = n.text }
+ ele.elements.each("lat"){ |n| res_hash['lat'] = n.text }
+ ele.elements.each("lng"){ |n| res_hash['lon']= n.text }
+ @res_ary << res_hash
+ end
+ end
+
+ flash.delete(:notice)
+ rescue Timeout::Error
+ flash[:notice] = "Timed out waiting for results from ws.geonames.org"
+ rescue Exception => ex
+ flash[:notice] = "Error contacting ws.geonames.org: #{ex.to_s}"
+ end
end
end
projects / rails.git / blobdiff