1 # The ChangesetController is the RESTful interface to Changeset objects
3 class ChangesetsController < ApplicationController
9 before_action :authorize_web
10 before_action :set_locale
11 before_action -> { check_database_readable(:need_api => true) }, :only => [:index, :feed]
15 around_action :web_timeout
17 # Helper methods for checking consistency
18 include ConsistencyValidations
21 # list non-empty changesets in reverse chronological order
23 @params = params.permit(:display_name, :bbox, :friends, :nearby, :max_id, :list)
25 if request.format == :atom && @params[:max_id]
26 redirect_to url_for(@params.merge(:max_id => nil)), :status => :moved_permanently
30 if @params[:display_name]
31 user = User.find_by(:display_name => @params[:display_name])
32 if !user || !user.active?
33 render_unknown_user @params[:display_name]
38 if (@params[:friends] || @params[:nearby]) && !current_user
43 if request.format == :html && !@params[:list]
45 render :action => :history, :layout => map_layout
47 changesets = conditions_nonempty(Changeset.all)
49 if @params[:display_name]
50 changesets = if user.data_public? || user == current_user
51 changesets.where(:user => user)
53 changesets.where("false")
56 changesets = conditions_bbox(changesets, BoundingBox.from_bbox_params(params))
57 elsif @params[:friends] && current_user
58 changesets = changesets.where(:user => current_user.friends.identifiable)
59 elsif @params[:nearby] && current_user
60 changesets = changesets.where(:user => current_user.nearby)
63 changesets = changesets.where("changesets.id <= ?", @params[:max_id]) if @params[:max_id]
65 @changesets = changesets.order("changesets.id DESC").limit(20).preload(:user, :changeset_tags, :comments)
67 render :action => :index, :layout => false
72 # list edits as an atom feed
79 #------------------------------------------------------------
80 # utility functions below.
81 #------------------------------------------------------------
84 # if a bounding box was specified do some sanity checks.
85 # restrict changesets to those enclosed by a bounding box
86 # we need to return both the changesets and the bounding box
87 def conditions_bbox(changesets, bbox)
92 changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?",
93 bbox.max_lon.to_i, bbox.min_lon.to_i,
94 bbox.max_lat.to_i, bbox.min_lat.to_i)
101 # eliminate empty changesets (where the bbox has not been set)
102 # this should be applied to all changeset list displays
103 def conditions_nonempty(changesets)
104 changesets.where("num_changes > 0")