Merge remote-tracking branch 'openstreetmap/pull/1338'

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

diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index caa2df9d81f622e92c4b0f01656968e91579bb3b..eb59a8a8df0bda5da97d218ceee62bd99ed4393d 100644 (file)
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -125,27 +125,25 @@ class ApiController < ApplicationController
       return
     end
 
-    @nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
+    nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
 
-    node_ids = @nodes.collect(&:id)
+    node_ids = nodes.collect(&:id)
     if node_ids.length > MAX_NUMBER_OF_NODES
       report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). Either request a smaller area, or use planet.osm")
       return
     end
-    if node_ids.length == 0
-      render :text => "<osm version='#{API_VERSION}' generator='#{GENERATOR}'></osm>", :content_type => "text/xml"
-      return
-    end
 
     doc = OSM::API.new.get_xml_doc
 
     # add bounds
-    doc.root << bbox.add_bounds_to(XML::Node.new "bounds")
+    doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
 
     # get ways
     # find which ways are needed
     ways = []
-    if node_ids.length > 0
+    if node_ids.empty?
+      list_of_way_nodes = []
+    else
       way_nodes = WayNode.where(:node_id => node_ids)
       way_ids = way_nodes.collect { |way_node| way_node.id[0] }
       ways = Way.preload(:way_nodes, :way_tags).find(way_ids)
@@ -154,23 +152,20 @@ class ApiController < ApplicationController
         way.way_nodes.collect(&:node_id)
       end
       list_of_way_nodes.flatten!
-
-    else
-      list_of_way_nodes = []
     end
 
     # - [0] in case some thing links to node 0 which doesn't exist. Shouldn't actually ever happen but it does. FIXME: file a ticket for this
     nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
 
-    if nodes_to_fetch.length > 0
-      @nodes += Node.includes(:node_tags).find(nodes_to_fetch)
+    unless nodes_to_fetch.empty?
+      nodes += Node.includes(:node_tags).find(nodes_to_fetch)
     end
 
     visible_nodes = {}
     changeset_cache = {}
     user_display_name_cache = {}
 
-    @nodes.each do |node|
+    nodes.each do |node|
       if node.visible?
         doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
         visible_nodes[node.id] = node
@@ -262,8 +257,8 @@ class ApiController < ApplicationController
 
     api = XML::Node.new "api"
     version = XML::Node.new "version"
-    version["minimum"] = "#{API_VERSION}"
-    version["maximum"] = "#{API_VERSION}"
+    version["minimum"] = API_VERSION.to_s
+    version["maximum"] = API_VERSION.to_s
     api << version
     area = XML::Node.new "area"
     area["maximum"] = MAX_REQUEST_AREA.to_s
@@ -305,10 +300,9 @@ class ApiController < ApplicationController
   # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
   # * unauthenticated users have no permissions, so the list will be empty.
   def permissions
-    @permissions = case
-                   when current_token.present?
+    @permissions = if current_token.present?
                      ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
-                   when @user
+                   elsif @user
                      ClientApplication.all_permissions
                    else
                      []