Handle deleted items better.

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

diff --git a/app/models/relation.rb b/app/models/relation.rb
index f74a149ec0b28c0de7b518afb6c572903a13bc00..61344bdfb62021fad69b67c72cf4e97d0b59219f 100644 (file)
--- a/app/models/relation.rb
+++ b/app/models/relation.rb
@@ -102,23 +102,46 @@ class Relation < ActiveRecord::Base
     return el1
   end 
 
+    
+  # collect relationships. currently done in one big block at the end;
+  # may need to move this upwards if people want automatic completion of
+  # relationships, i.e. deliver referenced objects like we do with ways... 
+  # FIXME: rip out the fucking SQL
+  def self.find_for_nodes_and_ways(node_ids, way_ids)
+    relations = []
+
+    if node_ids.length > 0
+      relations += Relation.find_by_sql("select e.* from current_relations e,current_relation_members em where " +
+            "e.visible=1 and " +
+            "em.id = e.id and em.member_type='node' and em.member_id in (#{node_ids.join(',')})")
+    end
+    if way_ids.length > 0
+      relations += Relation.find_by_sql("select e.* from current_relations e,current_relation_members em where " +
+            "e.visible=1 and " +
+            "em.id = e.id and em.member_type='way' and em.member_id in (#{way_ids.join(',')})")
+    end
+
+    relations # if you don't do this then it returns nil and not []
+  end
+
+
   # FIXME is this really needed?
   def members
     unless @members
-        @members = Array.new
-        self.relation_members.each do |member|
-            @members += [[member.member_type,member.member_id,member.member_role]]
-        end
+      @members = Array.new
+      self.relation_members.each do |member|
+        @members += [[member.member_type,member.member_id,member.member_role]]
+      end
     end
     @members
   end
 
   def tags
     unless @tags
-        @tags = Hash.new
-        self.relation_tags.each do |tag|
-            @tags[tag.k] = tag.v
-        end
+      @tags = Hash.new
+      self.relation_tags.each do |tag|
+        @tags[tag.k] = tag.v
+      end
     end
     @tags
   end
@@ -141,46 +164,40 @@ class Relation < ActiveRecord::Base
     @tags[k] = v
   end
 
-  def save_with_history
-    begin
-      Relation.transaction do
-        t = Time.now
-        self.timestamp = t
-        self.save!
-
-        tags = self.tags
+  def save_with_history!
+    Relation.transaction do
+      t = Time.now
+      self.timestamp = t
+      self.save!
 
-        RelationTag.delete_all(['id = ?', self.id])
+      tags = self.tags
 
-        tags.each do |k,v|
-          tag = RelationTag.new
-          tag.k = k
-          tag.v = v
-          tag.id = self.id
-          tag.save!
-        end
+      RelationTag.delete_all(['id = ?', self.id])
 
-        members = self.members
+      tags.each do |k,v|
+        tag = RelationTag.new
+        tag.k = k
+        tag.v = v
+        tag.id = self.id
+        tag.save!
+      end
 
-        RelationMember.delete_all(['id = ?', self.id])
+      members = self.members
 
-        members.each do |n|
-          mem = RelationMember.new
-          mem.id = self.id
-          mem.member_type = n[0];
-          mem.member_id = n[1];
-          mem.member_role = n[2];
-          mem.save!
-        end
+      RelationMember.delete_all(['id = ?', self.id])
 
-        old_relation = OldRelation.from_relation(self)
-        old_relation.timestamp = t
-        old_relation.save_with_dependencies!
+      members.each do |n|
+        mem = RelationMember.new
+        mem.id = self.id
+        mem.member_type = n[0];
+        mem.member_id = n[1];
+        mem.member_role = n[2];
+        mem.save!
       end
 
-      return true
-    rescue Exception => ex
-      return nil
+      old_relation = OldRelation.from_relation(self)
+      old_relation.timestamp = t
+      old_relation.save_with_dependencies!
     end
   end