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'
43 conditions[0] += " AND gpx_file_tags.tag = ?"
44 conditions << params[:tag];
47 opt[:conditions] = conditions
49 # count traces using all options except limit
50 @max_trace = Trace.count(opt)
51 @max_page = Integer((@max_trace + 1) / @traces_per_page)
53 # last step before fetch - add paging options
54 opt[:limit] = @traces_per_page
56 opt[:offset] = @traces_per_page * page_index
59 @traces = Trace.find(:all , opt)
61 # put together SET of tags across traces, for related links
64 @traces.each do |trace|
65 trace.tags.reload if params[:tag] # if searched by tag, ActiveRecord won't bring back other tags, so do explicitly here
66 trace.tags.each do |tag|
67 tagset[tag.tag] = tag.tag
72 # final helper vars for view
73 @display_name = display_name
74 @all_tags = tagset.values
75 @paging_action = paging_action # the action that paging requests should route back to, e.g. 'list' or 'mine'
76 @page = page_index + 1 # nice 1-based external page numbers
81 list(@user, 'mine') unless @user.nil?
83 redirect_to :controller => 'user', :action => 'login'
88 @trace = Trace.find(params[:id])
91 render :nothing, :status => 401 if @trace.user.id != @user.id
97 filename = "/tmp/#{rand}"
99 File.open(filename, "w") { |f| f.write(@params['trace']['gpx_file'].read) }
100 @params['trace']['name'] = @params['trace']['gpx_file'].original_filename.gsub(/[^a-zA-Z0-9.]/, '_') # This makes sure filenames are sane
101 @params['trace'].delete('gpx_file') # let's remove the field from the hash, because there's no such field in the DB anyway.
102 @trace = Trace.new(@params['trace'])
103 @trace.inserted = false
104 @trace.user_id = @user.id
105 @trace.timestamp = Time.now
107 logger.info("id is #{@trace.id}")
108 File.rename(filename, "/tmp/#{@trace.id}.gpx")
109 # *nix - specific `mv #{filename} /tmp/#{@trace.id}.gpx`
110 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."
113 redirect_to :action => 'mine'
117 traces = Trace.find(:all, :conditions => ['public = true'], :order => 'timestamp DESC', :limit => 20)
119 rss = OSM::GeoRSS.new
121 #def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=Time.now)
122 traces.each do |trace|
123 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)
126 response.headers["Content-Type"] = 'application/xml+rss'
128 render :text => rss.to_s
132 trace = Trace.find(params[:id])
133 send_data(trace.large_picture, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline') if trace.public
137 trace = Trace.find(params[:id])
138 send_data(trace.icon_picture, :filename => "#{trace.id}_icon.gif", :type => 'image/gif', :disposition => 'inline') if trace.public