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

diff --git a/app/controllers/node_controller.rb b/app/controllers/node_controller.rb
index a5f20acea658e49f2e26f32ac9f186722f6272b8..33e0ed3ee876f358c77c3e93dada13bd753ae716 100644 (file)
--- a/app/controllers/node_controller.rb
+++ b/app/controllers/node_controller.rb
@@ -1,162 +1,77 @@
+# The NodeController is the RESTful interface to Node objects
+

 class NodeController < ApplicationController
   require 'xml/libxml'
 
 class NodeController < ApplicationController
   require 'xml/libxml'
 

-  before_filter :authorize
+  before_filter :authorize, :only => [:create, :update, :delete]
+  before_filter :require_allow_write_api, :only => [:create, :update, :delete]
+  before_filter :require_public_data, :only => [:create, :update, :delete]
+  before_filter :check_api_writable, :only => [:create, :update, :delete]
+  before_filter :check_api_readable, :except => [:create, :update, :delete]
+  after_filter :compress_output
+  around_filter :api_call_handle_error, :api_call_timeout

 
 

+  # Create a node from XML.

   def create
   def create

-    if request.put?
-      p = XML::Parser.new
-      p.string = request.raw_post
-      doc = p.parse
-
-      doc.find('//osm/node').each do |pt|
-        lat = pt['lat'].to_f
-        lon = pt['lon'].to_f
-        node_id = pt['id'].to_i
-
-        if lat > 90 or lat < -90 or lon > 180 or lon < -180  or node_id != 0
-          render :nothing => true, :status => 400 # BAD REQUEST
-          return
-        end
-
-        tags = []
-
-        pt.find('tag').each do |tag|
-          tags << [tag['k'],tag['v']]
-        end
-        tags = tags.collect { |k,v| "#{k}=#{v}" }.join(';')
-        tags = '' if tags.nil?
+    assert_method :put

 
 

-        now = Time.now
+    node = Node.from_xml(request.raw_post, true)

 
 

-        node = Node.new
-        node.latitude = lat
-        node.longitude = lon
-        node.visible = 1
-        node.tags = tags
-        node.timestamp = now
-        node.user_id = @user.id
-
-        #FIXME add a node to the old nodes table too
-
-        if node.save
-          render :text => node.id
-        else
-          render :nothing => true, :status => 500
-        end
+    # Assume that Node.from_xml has thrown an exception if there is an error parsing the xml
+    node.create_with_history @user
+    render :text => node.id.to_s, :content_type => "text/plain"
+  end

 
 

-        return
-      end
+  # Dump the details on a node given in params[:id]
+  def read
+    node = Node.find(params[:id])
+    if node.visible?
+      response.headers['Last-Modified'] = node.timestamp.rfc822
+      render :text => node.to_xml.to_s, :content_type => "text/xml"
+    else
+      render :text => "", :status => :gone

     end
     end

-
-    render :nothing => true, :status => 400 # if we got here the doc didnt parse

   end
   end

-
-  def rest
-    unless Node.exists?(params[:id])
-      render :nothing => true, :status => 400
-      return
+  
+  # Update a node from given XML
+  def update
+    node = Node.find(params[:id])
+    new_node = Node.from_xml(request.raw_post)
+       
+    unless new_node and new_node.id == node.id
+      raise OSM::APIBadUserInput.new("The id in the url (#{node.id}) is not the same as provided in the xml (#{new_node.id})")

     end
     end

+    node.update_from(new_node, @user)
+    render :text => node.version.to_s, :content_type => "text/plain"
+  end

 
 

+  # Delete a node. Doesn't actually delete it, but retains its history 
+  # in a wiki-like way. We therefore treat it like an update, so the delete
+  # method returns the new version number.
+  def delete

     node = Node.find(params[:id])
     node = Node.find(params[:id])

-
-
-    case request.method
-    when :get
-      doc = XML::Document.new
-
-      doc.encoding = "UTF-8"  
-      root = XML::Node.new 'osm'
-      root['version'] = '0.4'
-      root['generator'] = 'OpenStreetMap server'
-      doc.root = root
-      el1 = XML::Node.new 'node'
-      el1['id'] = node.id.to_s
-      el1['lat'] = node.latitude.to_s
-      el1['lon'] = node.longitude.to_s
-      split_tags(el1, node.tags)
-      el1['visible'] = node.visible.to_s
-      el1['timestamp'] = node.timestamp.xmlschema
-      root << el1
-
-      render :text => doc.to_s
-
-    when :delete
-      #
-      # DELETE
-      #
-
-      if node.visible
-        node.visible = 0
-        node.save
-        render :nothing => true
-      else
-        render :nothing => true, :status => 410
-      end
-
-    when :put
-      #
-      # PUT
-      #
-
-      p = XML::Parser.new
-      p.string = request.raw_post
-      doc = p.parse
-
-      doc.find('//osm/node').each do |pt|
-        lat = pt['lat'].to_f
-        lon = pt['lon'].to_f
-        node_id = pt['id'].to_i
-
-        if lat > 90 or lat < -90 or lon > 180 or lon < -180  or node_id != params[:id]
-          render :nothing => true, :status => 400
-          return
-        end
-
-        tags = []
-
-        pt.find('tag').each do |tag|
-          tags << [tag['k'],tag['v']]
-        end
-        tags = tags.collect { |k,v| "#{k}=#{v}" }.join(';')
-        tags = '' if tags.nil?
-
-        now = Time.now
-
-        node.latitude = lat
-        node.longitude = lon
-        node.visible = 1
-        node.tags = tags
-        node.timestamp = now
-        node.user_id = @user.id
-
-        #FIXME add a node to the old nodes table too
-
-        if node.save
-          render :text => node.id
-        else
-          render :nothing => true, :status => 500
-        end
-      end
+    new_node = Node.from_xml(request.raw_post)
+    
+    unless new_node and new_node.id == node.id
+      raise OSM::APIBadUserInput.new("The id in the url (#{node.id}) is not the same as provided in the xml (#{new_node.id})")

     end
     end

+    node.delete_with_history!(new_node, @user)
+    render :text => node.version.to_s, :content_type => "text/plain"

   end
 
   end
 

-  private
-  def split_tags(el, tags)
-    tags.split(';').each do |tag|
-      parts = tag.split('=')
-      key = ''
-      val = ''
-      key = parts[0].strip unless parts[0].nil?
-      val = parts[1].strip unless parts[1].nil?
-      if key != '' && val != ''
-        el2 = Node.new('tag')
-        el2['k'] = key.to_s
-        el2['v'] = val.to_s
-        el << el2
-      end
+  # Dump the details on many nodes whose ids are given in the "nodes" parameter.
+  def nodes
+    ids = params['nodes'].split(',').collect { |n| n.to_i }
+
+    if ids.length == 0
+      raise OSM::APIBadUserInput.new("No nodes were given to search for")

     end
     end

-  end
+    doc = OSM::API.new.get_xml_doc

 
 

+    Node.find(ids).each do |node|
+      doc.root << node.to_xml_node
+    end

 
 

+    render :text => doc.to_s, :content_type => "text/xml"
+  end

 end
 end