Add order parameter to changeset query api entry point

[rails.git] / app / controllers / api / changesets_controller.rb

diff --git a/app/controllers/api/changesets_controller.rb b/app/controllers/api/changesets_controller.rb
index a08edff53cd46f3f3f3404eb49cb7c9b28a1a8d7..66014042718126ceca06b3bd3f864a7bb6985be6 100644 (file)
--- a/app/controllers/api/changesets_controller.rb
+++ b/app/controllers/api/changesets_controller.rb
@@ -19,9 +19,6 @@ module Api
     # Helper methods for checking consistency
     include ConsistencyValidations
 
-    DEFAULT_QUERY_LIMIT = 100
-    MAX_QUERY_LIMIT = 100
-
     ##
     # Return XML giving the basic info about the changeset. Does not
     # return anything about the nodes, ways and relations in the changeset.
@@ -173,8 +170,15 @@ module Api
       changesets = conditions_closed(changesets, params["closed"])
       changesets = conditions_ids(changesets, params["changesets"])
 
-      # sort and limit the changesets
-      changesets = changesets.order("created_at DESC").limit(result_limit)
+      # sort the changesets
+      changesets = if params[:order] == "oldest"
+                     changesets.order("created_at ASC")
+                   else
+                     changesets.order("created_at DESC")
+                   end
+
+      # limit the result
+      changesets = changesets.limit(result_limit)
 
       # preload users, tags and comments, and render result
       @changesets = changesets.preload(:user, :changeset_tags, :comments)
@@ -391,13 +395,13 @@ module Api
     # Get the maximum number of results to return
     def result_limit
       if params[:limit]
-        if params[:limit].to_i.positive? && params[:limit].to_i <= MAX_QUERY_LIMIT
+        if params[:limit].to_i.positive? && params[:limit].to_i <= Settings.max_changeset_query_limit
           params[:limit].to_i
         else
-          raise OSM::APIBadUserInput, "Changeset limit must be between 1 and #{MAX_QUERY_LIMIT}"
+          raise OSM::APIBadUserInput, "Changeset limit must be between 1 and #{Settings.max_changeset_query_limit}"
         end
       else
-        DEFAULT_QUERY_LIMIT
+        Settings.default_changeset_query_limit
       end
     end
   end