Creating consistency check for creation of nodes, way and relations. Moving some...

[rails.git] / app / models / way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 34afc6585041e7fa3c723dc08bde40a8b24af83c..b2bdfb39b0e0e96bc6ee4d497b240ade8238eef2 100644 (file)
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -1,9 +1,14 @@
 class Way < ActiveRecord::Base
   require 'xml/libxml'
+  
+  include ConsistencyValidations
 
   set_table_name 'current_ways'
 
-  belongs_to :user
+  validates_presence_of :changeset_id, :timestamp
+  validates_inclusion_of :visible, :in => [ true, false ]
+  
+  belongs_to :changeset
 
   has_many :old_ways, :foreign_key => 'id', :order => 'version'
 
@@ -37,13 +42,14 @@ class Way < ActiveRecord::Base
     end
     
     way.version = pt['version']
+    way.changeset_id = pt['changeset']
 
     if create
       way.timestamp = Time.now
       way.visible = true
     else
       if pt['timestamp']
-       way.timestamp = Time.parse(pt['timestamp'])
+        way.timestamp = Time.parse(pt['timestamp'])
       end
     end
 
@@ -81,18 +87,19 @@ class Way < ActiveRecord::Base
     el1['visible'] = self.visible.to_s
     el1['timestamp'] = self.timestamp.xmlschema
     el1['version'] = self.version.to_s
+    el1['changeset'] = self.changeset_id.to_s
 
     user_display_name_cache = {} if user_display_name_cache.nil?
 
-    if user_display_name_cache and user_display_name_cache.key?(self.user_id)
+    if user_display_name_cache and user_display_name_cache.key?(self.changeset.user_id)
       # use the cache if available
-    elsif self.user.data_public?
-      user_display_name_cache[self.user_id] = self.user.display_name
+    elsif self.changeset.user.data_public?
+      user_display_name_cache[self.changeset.user_id] = self.changeset.user.display_name
     else
-      user_display_name_cache[self.user_id] = nil
+      user_display_name_cache[self.changeset.user_id] = nil
     end
 
-    el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
+    el1['user'] = user_display_name_cache[self.changeset.user_id] unless user_display_name_cache[self.changeset.user_id].nil?
 
     # make sure nodes are output in sequence_id order
     ordered_nodes = []
@@ -201,17 +208,25 @@ class Way < ActiveRecord::Base
   end
 
   def update_from(new_way, user)
+    check_consistency(self, new_way, user)
     if !new_way.preconditions_ok?
       raise OSM::APIPreconditionFailedError.new
-    elsif new_way.version != version
-      raise OSM::APIVersionMismatchError.new(new_way.version, version)
-    else
-      self.user_id = user.id
-      self.tags = new_way.tags
-      self.nds = new_way.nds
-      self.visible = true
-      save_with_history!
     end
+    self.changeset_id = changeset_id
+    self.tags = new_way.tags
+    self.nds = new_way.nds
+    self.visible = true
+    save_with_history!
+  end
+
+  def create_with_history(user)
+    check_create_consistency(self, user)
+    if !self.preconditions_ok?
+      raise OSM::APIPreconditionsFailedError.new
+    end
+    self.version = 0
+    self.visible = true
+    save_with_history!
   end
 
   def preconditions_ok?
@@ -225,11 +240,13 @@ class Way < ActiveRecord::Base
     return true
   end
 
-  def delete_with_history(user)
+  def delete_with_history(new_way, user)
+    check_consistency(self, new_way, user)
     if self.visible
-         # FIXME
-         # this should actually delete the relations,
-         # not just throw a PreconditionFailed if it's a member of a relation!!
+      # FIXME
+      # this should actually delete the relations,
+      # not just throw a PreconditionFailed if it's a member of a relation!!
+      # WHY?? The editor should decide whether the node is in the relation or not!
 
       # FIXME: this should probably renamed to delete_with_history
       if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
@@ -237,7 +254,7 @@ class Way < ActiveRecord::Base
         raise OSM::APIPreconditionFailedError
       # end FIXME
       else
-        self.user_id = user.id
+        self.changeset_id = new_way.changeset_id
         self.tags = []
         self.nds = []
         self.visible = false
@@ -252,27 +269,30 @@ class Way < ActiveRecord::Base
 
   # FIXME: merge the potlatch code to delete the relations
   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|
+    self.unshared_node_ids.each do |node_id|
       n = Node.find(node_id)
       n.user_id = user.id
       n.visible = false
       n.save_with_history!
     end
     
+    # FIXME needs more information passed in so that the changeset can be updated
     self.user_id = user.id
 
     self.delete_with_history(user)
+  end
+
+  # Find nodes that belong to this way only
+  def unshared_node_ids
+    node_ids = self.nodes.collect { |node| node.id }
+
+    unless node_ids.empty?
+      way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
+      node_ids = node_ids - way_nodes.collect { |way_node| way_node.node_id }
+    end
 
+    return node_ids
   end
 
   # Temporary method to match interface to nodes