1 # The ChangesetController is the RESTful interface to Changeset objects
3 class ChangesetsController < ApplicationController
8 before_action :authorize_web
9 before_action :set_locale
10 before_action -> { check_database_readable(:need_api => true) }, :only => [:index, :feed, :show]
11 before_action :require_oauth, :only => :show
12 before_action :check_database_writable, :only => [:subscribe, :unsubscribe]
16 around_action :web_timeout
19 # list non-empty changesets in reverse chronological order
21 @params = params.permit(:display_name, :bbox, :friends, :nearby, :max_id, :list)
23 if request.format == :atom && @params[:max_id]
24 redirect_to url_for(@params.merge(:max_id => nil)), :status => :moved_permanently
28 if @params[:display_name]
29 user = User.find_by(:display_name => @params[:display_name])
30 if !user || !user.active?
31 render_unknown_user @params[:display_name]
36 if (@params[:friends] || @params[:nearby]) && !current_user
41 if request.format == :html && !@params[:list]
43 render :action => :history, :layout => map_layout
45 changesets = conditions_nonempty(Changeset.all)
47 if @params[:display_name]
48 changesets = if user.data_public? || user == current_user
49 changesets.where(:user => user)
51 changesets.where("false")
54 changesets = conditions_bbox(changesets, BoundingBox.from_bbox_params(params))
55 elsif @params[:friends] && current_user
56 changesets = changesets.where(:user => current_user.friends.identifiable)
57 elsif @params[:nearby] && current_user
58 changesets = changesets.where(:user => current_user.nearby)
61 changesets = changesets.where("changesets.id <= ?", @params[:max_id]) if @params[:max_id]
63 @changesets = changesets.order("changesets.id DESC").limit(20).preload(:user, :changeset_tags, :comments)
65 render :action => :index, :layout => false
70 # list edits as an atom feed
77 @changeset = Changeset.find(params[:id])
78 @comments = if current_user&.moderator?
79 @changeset.comments.unscope(:where => :visible).includes(:author)
81 @changeset.comments.includes(:author)
83 @node_pages, @nodes = paginate(:old_nodes, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "node_page")
84 @way_pages, @ways = paginate(:old_ways, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "way_page")
85 @relation_pages, @relations = paginate(:old_relations, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "relation_page")
86 if @changeset.user.active? && @changeset.user.data_public?
87 changesets = conditions_nonempty(@changeset.user.changesets)
88 @next_by_user = changesets.where("id > ?", @changeset.id).reorder(:id => :asc).first
89 @prev_by_user = changesets.where("id < ?", @changeset.id).reorder(:id => :desc).first
91 render :layout => map_layout
92 rescue ActiveRecord::RecordNotFound
93 render :template => "browse/not_found", :status => :not_found, :layout => map_layout
97 # subscribe to a changeset
99 @changeset = Changeset.find(params[:id])
102 @changeset.subscribe(current_user) unless @changeset.subscribed?(current_user)
104 redirect_to changeset_path(@changeset)
106 rescue ActiveRecord::RecordNotFound
107 render :action => "no_such_entry", :status => :not_found
111 # unsubscribe from a changeset
113 @changeset = Changeset.find(params[:id])
116 @changeset.unsubscribe(current_user)
118 redirect_to changeset_path(@changeset)
120 rescue ActiveRecord::RecordNotFound
121 render :action => "no_such_entry", :status => :not_found
126 #------------------------------------------------------------
127 # utility functions below.
128 #------------------------------------------------------------
131 # if a bounding box was specified do some sanity checks.
132 # restrict changesets to those enclosed by a bounding box
133 def conditions_bbox(changesets, bbox)
135 bbox.check_boundaries
136 bbox = bbox.to_scaled
138 changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?",
139 bbox.max_lon.to_i, bbox.min_lon.to_i,
140 bbox.max_lat.to_i, bbox.min_lat.to_i)
147 # eliminate empty changesets (where the bbox has not been set)
148 # this should be applied to all changeset list displays
149 def conditions_nonempty(changesets)
150 changesets.where("num_changes > 0")