Implemented osmChange diff downloads for changesets and a couple of tests.

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

diff --git a/app/models/changeset.rb b/app/models/changeset.rb
index 85621dce234663ea885bfcba29f8b802be47c9fa..446ca351de81cd4d574722630cc4785284ffd30f 100644 (file)
--- a/app/models/changeset.rb
+++ b/app/models/changeset.rb
@@ -4,6 +4,23 @@ class Changeset < ActiveRecord::Base
   belongs_to :user
 
   has_many :changeset_tags, :foreign_key => 'id'
+  
+  has_many :nodes
+  has_many :ways
+  has_many :relations
+  has_many :old_nodes
+  has_many :old_ways
+  has_many :old_relations
+  
+  validates_presence_of :user_id, :created_at
+  validates_inclusion_of :open, :in => [ true, false ]
+  
+  # Use a method like this, so that we can easily change how we
+  # determine whether a changeset is open, without breaking code in at 
+  # least 6 controllers
+  def is_open?
+    return open
+  end
 
   def self.from_xml(xml, create=false)
     begin
@@ -23,13 +40,16 @@ class Changeset < ActiveRecord::Base
         end
       end
     rescue Exception => ex
-    print "noes "+ ex.to_s + "\n"
       cs = nil
     end
 
     return cs
   end
 
+  def tags_as_hash
+    return tags
+  end
+
   def tags
     unless @tags
       @tags = {}
@@ -54,6 +74,7 @@ class Changeset < ActiveRecord::Base
 
     Changeset.transaction do
       # fixme update modified_at time?
+      # FIXME there is no modified_at time, should it be added
       self.save!
     end
 
@@ -70,4 +91,43 @@ class Changeset < ActiveRecord::Base
       end
     end
   end
+  
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node()
+    return doc
+  end
+  
+  def to_xml_node(user_display_name_cache = nil)
+    el1 = XML::Node.new 'changeset'
+    el1['id'] = self.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)
+      # use the cache if available
+    elsif self.user.data_public?
+      user_display_name_cache[self.user_id] = self.user.display_name
+    else
+      user_display_name_cache[self.user_id] = nil
+    end
+
+    el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
+
+    self.tags.each do |k,v|
+      el2 = XML::Node.new('tag')
+      el2['k'] = k.to_s
+      el2['v'] = v.to_s
+      el1 << el2
+    end
+    
+    el1['created_at'] = self.created_at.xmlschema
+    el1['open'] = self.open.to_s
+
+    # FIXME FIXME FIXME: This does not include changes yet! There is 
+    # currently no changeset_id column in the tables as far as I can tell,
+    # so this is just a scaffold to build on, not a complete to_xml
+
+    return el1
+  end
 end