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, :show]
12 before_action :require_oauth, :only => :show
13 before_action :check_database_writable, :only => [:subscribe, :unsubscribe]
17 around_action :web_timeout
19 # Helper methods for checking consistency
20 include ConsistencyValidations
23 # list non-empty changesets in reverse chronological order
25 @params = params.permit(:display_name, :bbox, :friends, :nearby, :max_id, :list)
27 if request.format == :atom && @params[:max_id]
28 redirect_to url_for(@params.merge(:max_id => nil)), :status => :moved_permanently
32 if @params[:display_name]
33 user = User.find_by(:display_name => @params[:display_name])
34 if !user || !user.active?
35 render_unknown_user @params[:display_name]
40 if (@params[:friends] || @params[:nearby]) && !current_user
45 if request.format == :html && !@params[:list]
47 render :action => :history, :layout => map_layout
49 changesets = conditions_nonempty(Changeset.all)
51 if @params[:display_name]
52 changesets = if user.data_public? || user == current_user
53 changesets.where(:user => user)
55 changesets.where("false")
58 changesets = conditions_bbox(changesets, BoundingBox.from_bbox_params(params))
59 elsif @params[:friends] && current_user
60 changesets = changesets.where(:user => current_user.friends.identifiable)
61 elsif @params[:nearby] && current_user
62 changesets = changesets.where(:user => current_user.nearby)
65 changesets = changesets.where("changesets.id <= ?", @params[:max_id]) if @params[:max_id]
67 @changesets = changesets.order("changesets.id DESC").limit(20).preload(:user, :changeset_tags, :comments)
69 render :action => :index, :layout => false
74 # list edits as an atom feed
81 @changeset = Changeset.find(params[:id])
82 @comments = if current_user&.moderator?
83 @changeset.comments.unscope(:where => :visible).includes(:author)
85 @changeset.comments.includes(:author)
87 @node_pages, @nodes = paginate(:old_nodes, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "node_page")
88 @way_pages, @ways = paginate(:old_ways, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "way_page")
89 @relation_pages, @relations = paginate(:old_relations, :conditions => { :changeset_id => @changeset.id }, :per_page => 20, :parameter => "relation_page")
90 if @changeset.user.active? && @changeset.user.data_public?
91 @next_by_user = @changeset.user.changesets.where("id > ?", @changeset.id).reorder(:id => :asc).first
92 @prev_by_user = @changeset.user.changesets.where("id < ?", @changeset.id).reorder(:id => :desc).first
94 render :layout => map_layout
95 rescue ActiveRecord::RecordNotFound
96 render :template => "browse/not_found", :status => :not_found, :layout => map_layout
100 # subscribe to a changeset
102 @changeset = Changeset.find(params[:id])
105 @changeset.subscribe(current_user) unless @changeset.subscribed?(current_user)
107 redirect_to changeset_path(@changeset)
109 rescue ActiveRecord::RecordNotFound
110 render :action => "no_such_entry", :status => :not_found
114 # unsubscribe from a changeset
116 @changeset = Changeset.find(params[:id])
119 @changeset.unsubscribe(current_user)
121 redirect_to changeset_path(@changeset)
123 rescue ActiveRecord::RecordNotFound
124 render :action => "no_such_entry", :status => :not_found
129 #------------------------------------------------------------
130 # utility functions below.
131 #------------------------------------------------------------
134 # if a bounding box was specified do some sanity checks.
135 # restrict changesets to those enclosed by a bounding box
136 def conditions_bbox(changesets, bbox)
138 bbox.check_boundaries
139 bbox = bbox.to_scaled
141 changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?",
142 bbox.max_lon.to_i, bbox.min_lon.to_i,
143 bbox.max_lat.to_i, bbox.min_lat.to_i)
150 # eliminate empty changesets (where the bbox has not been set)
151 # this should be applied to all changeset list displays
152 def conditions_nonempty(changesets)
153 changesets.where("num_changes > 0")