Make nominatim live.

[rails.git] / app / controllers / geocoder_controller.rb

diff --git a/app/controllers/geocoder_controller.rb b/app/controllers/geocoder_controller.rb
index 556cfb36ad4ae53bf04fbadd3097cbdc9bb31dbd..df051f09d748195a7c0d67e008fdfe8822d1d3c9 100644 (file)
--- a/app/controllers/geocoder_controller.rb
+++ b/app/controllers/geocoder_controller.rb
@@ -19,10 +19,12 @@ class GeocoderController < ApplicationController
       @sources.push "us_postcode"
     elsif @query.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])\s*[0-9][ABD-HJLNP-UW-Z]{2})$/i)
       @sources.push "uk_postcode"
+      @sources.push "osm_nominatim"
       @sources.push "osm_namefinder"
     elsif @query.match(/^[A-Z]\d[A-Z]\s*\d[A-Z]\d$/i)
       @sources.push "ca_postcode"
     else
+      @sources.push "osm_nominatim"
       @sources.push "osm_namefinder"
       @sources.push "geonames"
     end
@@ -213,6 +215,52 @@ class GeocoderController < ApplicationController
     render :action => "error"
   end
 
+  def search_osm_nominatim
+    # get query parameters
+    query = params[:query]
+    minlon = params[:minlon]
+    minlat = params[:minlat]
+    maxlon = params[:maxlon]
+    maxlat = params[:maxlat]
+
+    # get view box
+    if minlon && minlat && maxlon && maxlat
+      viewbox = "&viewbox=#{minlon},#{maxlat},#{maxlon},#{minlat}"
+    end
+
+    # create result array
+    @results = Array.new
+
+    # ask nominatim
+    response = fetch_xml("http://nominatim.openstreetmap.org/search?format=xml&q=#{escape_query(query)}#{viewbox}&accept-language=#{request.user_preferred_languages.join(',')}")
+
+    # parse the response
+    response.elements.each("searchresults/place") do |place|
+      lat = place.attributes["lat"].to_s
+      lon = place.attributes["lon"].to_s
+      klass = place.attributes["class"].to_s
+      type = place.attributes["type"].to_s
+      name = place.attributes["display_name"].to_s
+      min_lat,max_lat,min_lon,max_lon = place.attributes["boundingbox"].to_s.split(",")
+
+      if klass == "highway"
+        prefix = t 'geocoder.search_osm_nominatim.prefix_highway', :type => type.capitalize
+      else
+        prefix = t 'geocoder.search_osm_nominatim.prefix_other', :type => type.capitalize
+      end
+
+      @results.push({:lat => lat, :lon => lon,
+                     :min_lat => min_lat, :max_lat => max_lat,
+                     :min_lon => min_lon, :max_lon => max_lon,
+                     :prefix => prefix, :name => name})
+    end
+
+    render :action => "results"
+  rescue Exception => ex
+    @error = "Error contacting nominatim.openstreetmap.org: #{ex.to_s}"
+    render :action => "error"
+  end
+
   def search_geonames
     # get query parameters
     query = params[:query]
@@ -240,10 +288,11 @@ class GeocoderController < ApplicationController
     @error = "Error contacting ws.geonames.org: #{ex.to_s}"
     render :action => "error"
   end
-  
+
   def description
     @sources = Array.new
 
+    @sources.push({ :name => "osm_nominatim" })
     @sources.push({ :name => "osm_namefinder", :types => "cities", :max => 2 })
     @sources.push({ :name => "osm_namefinder", :types => "towns", :max => 4 })
     @sources.push({ :name => "osm_namefinder", :types => "places", :max => 10 })
@@ -291,6 +340,31 @@ class GeocoderController < ApplicationController
     render :action => "error"
   end
 
+  def description_osm_nominatim
+    # get query parameters
+    lat = params[:lat]
+    lon = params[:lon]
+    zoom = params[:zoom]
+
+    # create result array
+    @results = Array.new
+
+    # ask OSM namefinder
+    response = fetch_xml("http://nominatim.openstreetmap.org/reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{request.user_preferred_languages.join(',')}")
+
+    # parse the response
+    response.elements.each("reversegeocode") do |result|
+      description = result.get_text("result").to_s
+
+      @results.push({:prefix => "#{description}"})
+    end
+
+    render :action => "results"
+  rescue Exception => ex
+    @error = "Error contacting nominatim.openstreetmap.org: #{ex.to_s}"
+    render :action => "error"
+  end
+
   def description_geonames
     # get query parameters
     lat = params[:lat]