replaced "wtf does this do" comment by something explaining what it does.

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

diff --git a/app/controllers/node_controller.rb b/app/controllers/node_controller.rb
index f1ee8f66b413820f724b963cc0983baa5d5772b4..c03f3c4fbf26767135213e4e65c0d2b5de9f11fc 100644 (file)
--- a/app/controllers/node_controller.rb
+++ b/app/controllers/node_controller.rb
@@ -11,21 +11,21 @@ class NodeController < ApplicationController
 
   # Create a node from XML.
   def create
-    if request.put?
-      node = Node.from_xml(request.raw_post, true)
-
-      if node
-        node.version = 0
-        node.user_id = @user.id
-        node.visible = true
-        node.save_with_history!
+    begin
+      if request.put?
+        node = Node.from_xml(request.raw_post, true)
 
-        render :text => node.id.to_s, :content_type => "text/plain"
+        if node
+          node.create_with_history @user
+          render :text => node.id.to_s, :content_type => "text/plain"
+        else
+          render :nothing => true, :status => :bad_request
+        end
       else
-        render :nothing => true, :status => :bad_request
+        render :nothing => true, :status => :method_not_allowed
       end
-    else
-      render :nothing => true, :status => :method_not_allowed
+    rescue OSM::APIError => ex
+      render ex.render_opts
     end
   end
 
@@ -33,7 +33,7 @@ class NodeController < ApplicationController
   def read
     begin
       node = Node.find(params[:id])
-      if node.visible
+      if node.visible?
         response.headers['Last-Modified'] = node.timestamp.rfc822
         render :text => node.to_xml.to_s, :content_type => "text/xml"
        else
@@ -43,7 +43,7 @@ class NodeController < ApplicationController
       render :nothing => true, :status => :not_found
     end
   end
-
+  
   # Update a node from given XML
   def update
     begin
@@ -56,30 +56,35 @@ class NodeController < ApplicationController
       else
         render :nothing => true, :status => :bad_request
       end
-    rescue OSM::APIVersionMismatchError => ex
-      render :text => "Version mismatch: Provided " + ex.provided.to_s +
-       ", server had: " + ex.latest.to_s, :status => :bad_request
+    rescue OSM::APIError => ex
+      render ex.render_opts
     rescue ActiveRecord::RecordNotFound
       render :nothing => true, :status => :not_found
     end
   end
 
-  # Delete a node. Doesn't actually delete it, but retains its history in a wiki-like way.
-  # FIXME remove all the fricking SQL
+  # 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
     begin
       node = Node.find(params[:id])
-      node.delete_with_history(@user)
+      new_node = Node.from_xml(request.raw_post)
+      
+      if new_node and new_node.id == node.id
+        node.delete_with_history!(new_node, @user)
+        render :text => node.version.to_s, :content_type => "text/plain"
+      else
+        render :nothing => true, :status => :bad_request
+      end
     rescue ActiveRecord::RecordNotFound
       render :nothing => true, :status => :not_found
-    rescue OSM::APIAlreadyDeletedError
-      render :text => "", :status => :gone
-    rescue OSM::APIPreconditionFailedError
-      render :text => "", :status => :precondition_failed
+    rescue OSM::APIError => ex
+      render ex.render_opts
     end
   end
 
-  # WTF does this do?
+  # 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 }