X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/ddd5b4cf19a92582fd114914be5bd5a04d3522a7..4424cd5b947432848fe7f5bc7518fd1b718ecf6c:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index ff2e64370..56c0717a7 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -3,6 +3,7 @@ class Way < ActiveRecord::Base
 
   belongs_to :user
 
+  has_many :nodes, :through => :way_nodes, :order => 'sequence_id'
   has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id'
   has_many :way_tags, :foreign_key => 'id'
 
@@ -49,9 +50,12 @@ class Way < ActiveRecord::Base
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes
   #
+  
   # You can't pull in all the tags too unless we put a sequence_id on the way_tags table and have a multipart key
   def self.find_eager(id)
     way = Way.find(id, :include => {:way_nodes => :node})
+    #If waytag had a multipart key that was real, you could do this:
+    #way = Way.find(id, :include => [:way_tags, {:way_nodes => :node}])
   end
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes and tags
@@ -154,15 +158,12 @@ class Way < ActiveRecord::Base
     t = Time.now
 
     Way.transaction do
+      self.version += 1
       self.timestamp = t
       self.save!
-    end
 
-    WayTag.transaction do
       tags = self.tags
-
       WayTag.delete_all(['id = ?', self.id])
-
       tags.each do |k,v|
         tag = WayTag.new
         tag.k = k
@@ -170,27 +171,22 @@ class Way < ActiveRecord::Base
         tag.id = self.id
         tag.save!
       end
-    end
 
-    WayNode.transaction do
       nds = self.nds
-
       WayNode.delete_all(['id = ?', self.id])
-
-      i = 1
+      sequence = 1
       nds.each do |n|
         nd = WayNode.new
-        nd.id = self.id
+        nd.id = [self.id, sequence]
         nd.node_id = n
-        nd.sequence_id = i
         nd.save!
-        i += 1
+        sequence += 1
       end
-    end
 
-    old_way = OldWay.from_way(self)
-    old_way.timestamp = t
-    old_way.save_with_dependencies!
+      old_way = OldWay.from_way(self)
+      old_way.timestamp = t
+      old_way.save_with_dependencies!
+    end
   end
 
   def preconditions_ok?
@@ -204,4 +200,50 @@ class Way < ActiveRecord::Base
     return true
   end
 
+  # Delete the way and it's relations, but don't really delete it - set its visibility to false and update the history etc to maintain wiki-like functionality.
+  def delete_with_relations_and_history(user)
+    if self.visible
+	  # FIXME
+	  # this should actually delete the relations,
+	  # not just throw a PreconditionFailed if it's a member of a relation!!
+      if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
+                             :conditions => [ "visible = 1 AND member_type='way' and member_id=?", self.id])
+        raise OSM::APIPreconditionFailedError
+      # end FIXME
+      else
+        self.user_id = user.id
+        self.tags = []
+        self.nds = []
+        self.visible = false
+        self.save_with_history!
+      end
+    else
+      raise OSM::APIAlreadyDeletedError
+    end
+  end
+
+  # delete a way and it's nodes that aren't part of other ways, with history
+  def delete_with_relations_and_nodes_and_history(user)
+    
+    node_ids = self.nodes.collect {|node| node.id }
+    node_ids_not_to_delete = []
+    way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
+    
+    node_ids_not_to_delete = way_nodes.collect {|way_node| way_node.node_id}
+
+    node_ids_to_delete = node_ids - node_ids_not_to_delete
+
+    # delete the nodes not used by other ways
+    node_ids_to_delete.each do |node_id|
+      n = Node.find(node_id)
+      n.user_id = user.id
+      n.visible = false
+      n.save_with_history!
+    end
+    
+    self.user_id = user.id
+
+    self.delete_with_relations_and_history(user)
+
+  end
 end