X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/4ec85171fd7b484ea701e5d9d6c009e72dbbd7de..6b633e9d4a49df1f9308ef392203437cb7742558:/app/controllers/api/changesets_controller.rb

diff --git a/app/controllers/api/changesets_controller.rb b/app/controllers/api/changesets_controller.rb
index 354b0b9c2..0a49a95f4 100644
--- a/app/controllers/api/changesets_controller.rb
+++ b/app/controllers/api/changesets_controller.rb
@@ -4,13 +4,13 @@ module Api
   class ChangesetsController < ApiController
     require "xml/libxml"
 
+    before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
+    before_action :check_api_readable, :except => [:create, :update, :upload, :download, :query, :subscribe, :unsubscribe]
     before_action :authorize, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]
 
     authorize_resource
 
     before_action :require_public_data, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]
-    before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
-    before_action :check_api_readable, :except => [:create, :update, :upload, :download, :query, :subscribe, :unsubscribe]
     before_action :set_request_formats, :except => [:create, :close, :upload]
 
     around_action :api_call_handle_error
@@ -19,6 +19,20 @@ module Api
     # Helper methods for checking consistency
     include ConsistencyValidations
 
+    ##
+    # Return XML giving the basic info about the changeset. Does not
+    # return anything about the nodes, ways and relations in the changeset.
+    def show
+      @changeset = Changeset.find(params[:id])
+      @include_discussion = params[:include_discussion].presence
+      render "changeset"
+
+      respond_to do |format|
+        format.xml
+        format.json
+      end
+    end
+
     # Create a changeset from XML.
     def create
       assert_method :put
@@ -35,20 +49,6 @@ module Api
       render :plain => cs.id.to_s
     end
 
-    ##
-    # Return XML giving the basic info about the changeset. Does not
-    # return anything about the nodes, ways and relations in the changeset.
-    def show
-      @changeset = Changeset.find(params[:id])
-      @include_discussion = params[:include_discussion].presence
-      render "changeset"
-
-      respond_to do |format|
-        format.xml
-        format.json
-      end
-    end
-
     ##
     # marks a changeset as closed. this may be called multiple times
     # on the same changeset, so is idempotent.
@@ -170,8 +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(100)
+      # sort the changesets
+      changesets = if params[:order] == "oldest"
+                     changesets.order(:closed_at => :asc)
+                   else
+                     changesets.order(:closed_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)
@@ -383,5 +390,19 @@ module Api
         changesets.where(:id => ids)
       end
     end
+
+    ##
+    # Get the maximum number of results to return
+    def result_limit
+      if params[: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 #{Settings.max_changeset_query_limit}"
+        end
+      else
+        Settings.default_changeset_query_limit
+      end
+    end
   end
 end