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 param! :max_id, Integer, :min => 1
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 @changeset = Changeset.find(params[:id])
80 @comments = if current_user&.moderator?
81 @changeset.comments.unscope(:where => :visible).includes(:author)
83 @changeset.comments.includes(:author)
85 @node_pages, @nodes = paginate(:old_nodes, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "node_page")
86 @way_pages, @ways = paginate(:old_ways, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "way_page")
87 @relation_pages, @relations = paginate(:old_relations, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "relation_page")
88 if @changeset.user.active? && @changeset.user.data_public?
89 changesets = conditions_nonempty(@changeset.user.changesets)
90 @next_by_user = changesets.where("id > ?", @changeset.id).reorder(:id => :asc).first
91 @prev_by_user = changesets.where("id < ?", @changeset.id).reorder(:id => :desc).first
93 render :layout => map_layout
94 rescue ActiveRecord::RecordNotFound
95 render :template => "browse/not_found", :status => :not_found, :layout => map_layout
99 # subscribe to a changeset
101 @changeset = Changeset.find(params[:id])
104 @changeset.subscribe(current_user) unless @changeset.subscribed?(current_user)
106 redirect_to changeset_path(@changeset)
108 rescue ActiveRecord::RecordNotFound
109 render :action => "no_such_entry", :status => :not_found
113 # unsubscribe from a changeset
115 @changeset = Changeset.find(params[:id])
118 @changeset.unsubscribe(current_user)
120 redirect_to changeset_path(@changeset)
122 rescue ActiveRecord::RecordNotFound
123 render :action => "no_such_entry", :status => :not_found
128 #------------------------------------------------------------
129 # utility functions below.
130 #------------------------------------------------------------
133 # if a bounding box was specified do some sanity checks.
134 # restrict changesets to those enclosed by a bounding box
135 def conditions_bbox(changesets, bbox)
137 bbox.check_boundaries
138 bbox = bbox.to_scaled
140 changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?",
141 bbox.max_lon.to_i, bbox.min_lon.to_i,
142 bbox.max_lat.to_i, bbox.min_lat.to_i)
149 # eliminate empty changesets (where the bbox has not been set)
150 # this should be applied to all changeset list displays
151 def conditions_nonempty(changesets)
152 changesets.where("num_changes > 0")