Merge pull request #3495 from mmd-osm/patch/json_cs

JSON output added to changeset(s) endpoints

app/views/api/changesets/_changeset.json.jbuilder

@@ -0,0 +1,33 @@
+# basic attributes
+json.id changeset.id
+json.created_at changeset.created_at.xmlschema
+json.open changeset.open?
+json.comments_count changeset.comments.length
+json.changes_count changeset.num_changes
+
+json.closed_at changeset.closed_at.xmlschema unless changeset.open?
+if changeset.bbox.complete?
+  json.min_lat GeoRecord::Coord.new(changeset.bbox.to_unscaled.min_lat)
+  json.min_lon GeoRecord::Coord.new(changeset.bbox.to_unscaled.min_lon)
+  json.max_lat GeoRecord::Coord.new(changeset.bbox.to_unscaled.max_lat)
+  json.max_lon GeoRecord::Coord.new(changeset.bbox.to_unscaled.max_lon)
+end
+
+# user attributes
+if changeset.user.data_public?
+  json.uid changeset.user_id
+  json.user changeset.user.display_name
+end
+
+json.tags changeset.tags unless changeset.tags.empty?
+
+if @include_discussion
+  json.comments(changeset.comments) do |comment|
+    json.date comment.created_at.xmlschema
+    if comment.author.data_public?
+      json.uid comment.author.id
+      json.user comment.author.display_name
+    end
+    json.text comment.body
+  end
+end

app/views/api/changesets/changeset.json.jbuilder

@@ -0,0 +1,5 @@
+json.partial! "api/root_attributes"
+
+json.changeset do
+  json.partial! @changeset
+end

app/views/api/changesets/changesets.json.jbuilder

@@ -0,0 +1,5 @@
+json.partial! "api/root_attributes"
+
+json.changesets(@changesets) do |changeset|
+  json.partial! changeset
+end