1 # The ChangesetController is the RESTful interface to Changeset objects
3 class ChangesetsController < ApplicationController
7 skip_before_action :verify_authenticity_token, :except => [:index]
8 before_action :authorize_web
9 before_action :set_locale
10 before_action(:only => [:index, :feed]) { |c| c.check_database_readable(true) }
14 around_action :web_timeout
16 # Helper methods for checking consistency
17 include ConsistencyValidations
20 # list non-empty changesets in reverse chronological order
22 @params = params.permit(:display_name, :bbox, :friends, :nearby, :max_id, :list)
24 if request.format == :atom && @params[:max_id]
25 redirect_to url_for(@params.merge(:max_id => nil)), :status => :moved_permanently
29 if @params[:display_name]
30 user = User.find_by(:display_name => @params[:display_name])
31 if !user || !user.active?
32 render_unknown_user @params[:display_name]
37 if (@params[:friends] || @params[:nearby]) && !current_user
42 if request.format == :html && !@params[:list]
44 render :action => :history, :layout => map_layout
46 changesets = conditions_nonempty(Changeset.all)
48 if @params[:display_name]
49 changesets = if user.data_public? || user == current_user
50 changesets.where(:user_id => user.id)
52 changesets.where("false")
55 changesets = conditions_bbox(changesets, BoundingBox.from_bbox_params(params))
56 elsif @params[:friends] && current_user
57 changesets = changesets.where(:user_id => current_user.friend_users.identifiable)
58 elsif @params[:nearby] && current_user
59 changesets = changesets.where(:user_id => current_user.nearby)
62 changesets = changesets.where("changesets.id <= ?", @params[:max_id]) if @params[:max_id]
64 @edits = changesets.order("changesets.id DESC").limit(20).preload(:user, :changeset_tags, :comments)
66 render :action => :index, :layout => false
71 # list edits as an atom feed
78 #------------------------------------------------------------
79 # utility functions below.
80 #------------------------------------------------------------
83 # if a bounding box was specified do some sanity checks.
84 # restrict changesets to those enclosed by a bounding box
85 # we need to return both the changesets and the bounding box
86 def conditions_bbox(changesets, bbox)
91 changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?",
92 bbox.max_lon.to_i, bbox.min_lon.to_i,
93 bbox.max_lat.to_i, bbox.min_lat.to_i)
100 # eliminate empty changesets (where the bbox has not been set)
101 # this should be applied to all changeset list displays
102 def conditions_nonempty(changesets)
103 changesets.where("num_changes > 0")