1 class TraceController < ApplicationController
2 before_filter :authorize_web
5 # Counts and selects pages of GPX traces for various criteria (by user, tags, public etc.).
6 # target_user - if set, specifies the user to fetch traces for. if not set will fetch all traces
7 # paging_action - the action that will be linked back to from view
8 def list (target_user = nil, paging_action = 'list')
10 page_index = params[:page] ? params[:page].to_i - 1 : 0 # nice 1-based page -> 0-based page index
12 # from display name, pick up user id if one user's traces only
13 display_name = params[:display_name]
14 if target_user.nil? and display_name and display_name != ''
15 target_user = User.find(:first, :conditions => [ "display_name = ?", display_name])
19 opt[:include] = [:user, :tags] # load users and tags from db at same time as traces
22 # 1 - all traces, logged in = all public traces + all user's (i.e + all mine)
23 # 2 - all traces, not logged in = all public traces
24 # 3 - user's traces, logged in as same user = all user's traces
25 # 4 - user's traces, not logged in as that user = all user's public traces
26 if target_user.nil? # all traces
28 conditions = ["(public = 1 OR user_id = ?)", @user.id] #1
30 conditions = ["public = 1"] #2
33 if @user and @user.id == target_user.id
34 conditions = ["user_id = ?", @user.id] #3 (check vs user id, so no join + can't pick up non-public traces by changing name)
36 conditions = ["public = 1 AND user_id = ?", target_user.id] #4
39 conditions[0] += " AND users.display_name != ''" # users need to set display name before traces will be exposed
41 opt[:order] = 'timestamp DESC'
44 conditions[0] += " AND gpx_file_tags.tag = ?"
48 opt[:conditions] = conditions
50 # count traces using all options except limit
51 @max_trace = Trace.count(opt)
52 @max_page = Integer((@max_trace + 1) / @traces_per_page)
54 # last step before fetch - add paging options
55 opt[:limit] = @traces_per_page
57 opt[:offset] = @traces_per_page * page_index
60 @traces = Trace.find(:all , opt)
62 # put together SET of tags across traces, for related links
65 @traces.each do |trace|
66 trace.tags.reload if params[:tag] # if searched by tag, ActiveRecord won't bring back other tags, so do explicitly here
67 trace.tags.each do |tag|
68 tagset[tag.tag] = tag.tag
73 # final helper vars for view
74 @display_name = display_name
75 @all_tags = tagset.values
76 @paging_action = paging_action # the action that paging requests should route back to, e.g. 'list' or 'mine'
77 @page = page_index + 1 # nice 1-based external page numbers
82 list(@user, 'mine') unless @user.nil?
84 redirect_to :controller => 'user', :action => 'login'
89 @trace = Trace.find(params[:id])
92 render :nothing, :status => 401 if @trace.user.id != @user.id
98 filename = "/tmp/#{rand}"
100 File.open(filename, "w") { |f| f.write(@params['trace']['gpx_file'].read) }
101 @params['trace']['name'] = @params['trace']['gpx_file'].original_filename.gsub(/[^a-zA-Z0-9.]/, '_') # This makes sure filenames are sane
102 @params['trace'].delete('gpx_file') # let's remove the field from the hash, because there's no such field in the DB anyway.
103 @trace = Trace.new(@params['trace'])
104 @trace.inserted = false
105 @trace.user_id = @user.id
106 @trace.timestamp = Time.now
107 saved_filename = "/tmp/#{@trace.id}.gpx"
108 # *nix - specific `mv #{filename} /tmp/#{@trace.id}.gpx`
109 File.rename(filename, saved_filename)
110 @trace.tmpname = saved_filename
112 logger.info("id is #{@trace.id}")
113 flash[:notice] = "Your GPX file has been uploaded and is awaiting insertion in to the database. This will usually happen within half an hour, and an email will be sent to you on completion."
118 redirect_to :action => 'mine'
122 traces = Trace.find(:all, :conditions => ['public = true'], :order => 'timestamp DESC', :limit => 20)
124 rss = OSM::GeoRSS.new
126 #def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=Time.now)
127 traces.each do |trace|
128 rss.add(trace.latitude, trace.longitude, trace.name, url_for({:controller => 'trace', :action => 'view', :id => trace.id, :display_name => trace.user.display_name}), "<img src='#{url_for({:controller => 'trace', :action => 'icon', :id => trace.id, :user_login => trace.user.display_name})}'> GPX file with #{trace.size} points from #{trace.user.display_name}", trace.timestamp)
131 response.headers["Content-Type"] = 'application/xml+rss'
133 render :text => rss.to_s
137 trace = Trace.find(params[:id])
138 send_data(trace.large_picture, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline') if trace.public
142 trace = Trace.find(params[:id])
143 send_data(trace.icon_picture, :filename => "#{trace.id}_icon.gif", :type => 'image/gif', :disposition => 'inline') if trace.public