Fixed error handling in the name search and tidied things up a bit.
[rails.git] / app / controllers / geocoder_controller.rb
index c12c0525bea7258981ffbcac7e6847669ea029be..76b157faabd6058f2c536711dc49942115939416 100644 (file)
@@ -5,25 +5,35 @@ class GeocoderController < ApplicationController
   require 'rexml/document'
 
   def search
-    @postcode_arr = []
+    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
 
-    if params[:query][:postcode] 
-      postcode = params[:query][:postcode].upcase
-      escaped_postcode = postcode.sub(/\s/,'%20')
+  def check_postcode(p)
 
+    @postcode_arr = []
+    postcode = p.upcase
+    escaped_postcode = postcode.sub(/\s/,'%20')
+
+    begin
       if postcode.match(/(^\d{5}$)|(^\d{5}-\d{4}$)/)
         # 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 "/index.html?error=invalid_zip_code"
+            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 "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
+          redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
           return
         end
       elsif postcode.match(/^([A-Z]{1,2}\d+[A-Z]?\s*\d[A-Z]{2})/)
@@ -35,7 +45,7 @@ class GeocoderController < ApplicationController
           data = dataline.split(/,/) # easting,northing,postcode,lat,long
           lat = data[3] 
           lon = data[4]
-          redirect_to "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
+          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/)
@@ -48,7 +58,7 @@ class GeocoderController < ApplicationController
           data_lon = resp.body.slice(/longt>.*?</)
           lat = data_lat.split(/[<>]/)[1]
           lon = data_lon.split(/[<>]/)[1]
-          redirect_to "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
+          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})
@@ -59,16 +69,14 @@ class GeocoderController < ApplicationController
             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 "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
+            redirect_to :controller => params[:next_controller], :action => params[:next_action], :mlat => lat, :mlon => lon, :zoom => 14
             return
           end
         rescue
-          redirect_to "/index.html"
+          redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "invalid_postcode"
           #redirect to somewhere else
         end
-        redirect_to "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
-        #redirect_to "/index.html?error=unknown_postcode_or_zip"
-      else
+      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|
@@ -76,26 +84,24 @@ class GeocoderController < ApplicationController
           hits = resp.body.slice(/totalResultsCount>.*?</).split(/[<>]/)[1]
           if hits == "0"
             # Geonames doesn't know, it's probably wrong
-            redirect_to "/index.html?error=unknown_postcode_or_zip"
+            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 "/index.html?lat=#{lat}&lon=#{lon}&zoom=14"
+          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
-    else
-      # Some other postcode / zip file
-      redirect_to "/index.html?error=unknown_postcode_or_zip"
-      return
+    rescue
+      #Its likely that an api is down
+      redirect_to :controller => params[:next_controller], :action => params[:next_action], :error => "api_down"
     end
-
-    if params[:query][:place_name]  
-      @place_name = params[:query][:place_name]
-      redirect_to :controller => 'geocoder', :action => 'results', :params => {:place_name => @place_name}
-    end 
   end
 
   def results
@@ -116,9 +122,12 @@ class GeocoderController < ApplicationController
           @res_ary << res_hash
         end 
       end
-    rescue
-      #Flash a notice to say that geonames is broken
-      redirect_to "/index.html"
+
+      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