Fix statistics script to work with 0.6 database schema.

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

diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb
index f7f4dc9f0ac2ef46fa2094dda96dd322d60185da..bba012a9c8c871bef56daf89a8d9d57ffef88fc5 100644 (file)
--- a/app/controllers/changeset_controller.rb
+++ b/app/controllers/changeset_controller.rb
@@ -1,9 +1,11 @@
 # The ChangesetController is the RESTful interface to Changeset objects
 
 class ChangesetController < ApplicationController
+  layout 'site'
   require 'xml/libxml'
 
-  session :off
+  session :off, :except => [:list, :list_user, :list_bbox]
+  before_filter :authorize_web, :only => [:list, :list_user, :list_bbox]
   before_filter :authorize, :only => [:create, :update, :delete, :upload, :include, :close]
   before_filter :check_write_availability, :only => [:create, :update, :delete, :upload, :include]
   before_filter :check_read_availability, :except => [:create, :update, :delete, :upload, :download, :query]
@@ -112,6 +114,8 @@ class ChangesetController < ApplicationController
       render :nothing => true, :status => :method_not_allowed
     end
 
+  rescue LibXML::XML::Error, ArgumentError => ex
+    raise OSM::APIBadXMLError.new("osm", xml, ex.message)
   rescue ActiveRecord::RecordNotFound
     render :nothing => true, :status => :not_found
   rescue OSM::APIError => ex
@@ -236,6 +240,7 @@ class ChangesetController < ApplicationController
     conditions = cond_merge conditions, conditions_user(params['user'])
     conditions = cond_merge conditions, conditions_time(params['time'])
     conditions = cond_merge conditions, conditions_open(params['open'])
+    conditions = cond_merge conditions, conditions_closed(params['closed'])
 
     # create the results document
     results = OSM::API.new.get_xml_doc
@@ -289,6 +294,81 @@ class ChangesetController < ApplicationController
     render ex.render_opts
   end
 
+  
+  
+  ##
+  # list edits (open changesets) in reverse chronological order
+  def list
+    conditions = conditions_nonempty
+    
+    
+   # @changesets = Changeset.find(:all, :order => "closed_at DESC", :conditions => ['closed_at < ?', DateTime.now], :limit=> 20)
+   
+   
+   #@edit_pages, @edits = paginate(:changesets,
+   #                                :include => [:user, :changeset_tags],
+   #                                :conditions => conditions,
+   #                                :order => "changesets.created_at DESC",
+   #                                :per_page => 20)
+   #
+    
+   @edits =  Changeset.find(:all,
+                                   :order => "changesets.created_at DESC",
+                                   :conditions => conditions,
+                                   :limit => 20)
+    
+  end
+  
+  ##
+  # list edits (changesets) belonging to a user
+  def list_user
+    user = User.find_by_display_name(params[:display_name], :conditions => {:visible => true})
+    
+    if user
+      @display_name = user.display_name
+      if not user.data_public? and @user != user
+        @edits = nil
+        render
+      else
+        conditions = cond_merge conditions, ['user_id = ?', user.id]
+        conditions = cond_merge conditions, conditions_nonempty
+        @edit_pages, @edits = paginate(:changesets,
+                                        :include => [:user, :changeset_tags],
+                                        :conditions => conditions,
+                                        :order => "changesets.created_at DESC",
+                                        :per_page => 20)
+      end
+    else
+      @not_found_user = params[:display_name]
+      render :template => 'user/no_such_user', :status => :not_found
+    end
+  end
+  
+  ##
+  # list changesets in a bbox
+  def list_bbox
+    # support 'bbox' param or alternatively 'minlon', 'minlat' etc       
+    if params['bbox']
+       bbox = params['bbox']
+    elsif params['minlon'] and params['minlat'] and params['maxlon'] and params['maxlat']
+       bbox = h(params['minlon']) + ',' + h(params['minlat']) + ',' + h(params['maxlon']) + ',' + h(params['maxlat'])
+    else
+      #TODO: fix bugs in location determination for history tab (and other tabs) then uncomment this redirect
+      #redirect_to :action => 'list'
+    end
+       
+    conditions = conditions_bbox(bbox);
+    conditions = cond_merge conditions, conditions_nonempty
+    
+    @edit_pages, @edits = paginate(:changesets,
+                                   :include => [:user, :changeset_tags],
+                                   :conditions => conditions,
+                                   :order => "changesets.created_at DESC",
+                                   :per_page => 20)
+                                   
+    @bbox = sanitise_boundaries(bbox.split(/,/)) unless bbox==nil
+  end
+  
 private
   #------------------------------------------------------------
   # utility functions below.
@@ -300,7 +380,7 @@ private
     if a and b
       a_str = a.shift
       b_str = b.shift
-      return [ a_str + " and " + b_str ] + a + b
+      return [ a_str + " AND " + b_str ] + a + b
     elsif a 
       return a
     else b
@@ -349,7 +429,7 @@ private
   end
 
   ##
-  # restrict changes to those during a particular time period
+  # restrict changes to those closed during a particular time period
   def conditions_time(time) 
     unless time.nil?
       # if there is a range, i.e: comma separated, then the first is 
@@ -377,9 +457,28 @@ private
   end
 
   ##
-  # restrict changes to those which are open
+  # return changesets which are open (haven't been closed yet)
+  # we do this by seeing if the 'closed at' time is in the future. Also if we've
+  # hit the maximum number of changes then it counts as no longer open.
+  # if parameter 'open' is nill then open and closed changsets are returned
   def conditions_open(open)
-    return open.nil? ? nil : ['closed_at >= ?', DateTime.now]
+    return open.nil? ? nil : ['closed_at >= ? and num_changes <= ?', 
+                              Time.now.getutc, Changeset::MAX_ELEMENTS]
+  end
+  
+  ##
+  # query changesets which are closed
+  # ('closed at' time has passed or changes limit is hit)
+  def conditions_closed(closed)
+    return closed.nil? ? nil : ['closed_at < ? and num_changes > ?', 
+                                Time.now.getutc, Changeset::MAX_ELEMENTS]
   end
 
+  ##
+  # eliminate empty changesets (where the bbox has not been set)
+  # this should be applied to all changeset list displays
+  def conditions_nonempty()
+    return ['min_lat IS NOT NULL']
+  end
+  
 end