source: subversion/sites/rails_port/app/controllers/trace_controller.rb @ 3301

Revision 3301, 7.6 KB checked in by dankarran, 7 years ago (diff)

Adding tag name to title if available.

Line 
1class TraceController < ApplicationController
2  before_filter :authorize_web 
3  before_filter :authorize, :only => [:api_details, :api_data, :api_create]
4  layout 'site'
5 
6  # Counts and selects pages of GPX traces for various criteria (by user, tags, public etc.).
7  #  target_user - if set, specifies the user to fetch traces for.  if not set will fetch all traces
8  #  paging_action - the action that will be linked back to from view
9  def list (target_user = nil, paging_action = 'list')
10    @title = 'public GPS traces'
11    @title += " tagged with #{params[:tag]}" if params[:tag]
12    @traces_per_page = 20
13    page_index = params[:page] ? params[:page].to_i - 1 : 0 # nice 1-based page -> 0-based page index
14
15    # from display name, pick up user id if one user's traces only
16    display_name = params[:display_name]
17    if target_user.nil? and display_name and display_name != ''
18      @paging_action = 'view'
19      @display_name = display_name
20      @title += " from #{@display_name}"
21      target_user = User.find(:first, :conditions => [ "display_name = ?", display_name])
22    end
23
24    opt = Hash.new
25    opt[:include] = [:user, :tags] # load users and tags from db at same time as traces
26
27    # four main cases:
28    # 1 - all traces, logged in = all public traces + all user's (i.e + all mine)
29    # 2 - all traces, not logged in = all public traces
30    # 3 - user's traces, logged in as same user = all user's traces
31    # 4 - user's traces, not logged in as that user = all user's public traces
32    if target_user.nil? # all traces
33      if @user
34        conditions = ["(public = 1 OR user_id = ?)", @user.id] #1
35      else
36        conditions  = ["public = 1"] #2
37      end
38    else
39      if @user and @user.id == target_user.id
40        conditions = ["user_id = ?", @user.id] #3 (check vs user id, so no join + can't pick up non-public traces by changing name)
41      else
42        conditions = ["public = 1 AND user_id = ?", target_user.id] #4
43      end
44    end
45    conditions[0] += " AND users.display_name != ''" # users need to set display name before traces will be exposed
46   
47    opt[:order] = 'timestamp DESC'
48    if params[:tag]
49      @tag = params[:tag]
50      conditions[0] += " AND gpx_file_tags.tag = ?"
51      conditions << @tag;
52    end
53   
54    opt[:conditions] = conditions
55
56    # count traces using all options except limit
57    @max_trace = Trace.count(opt)
58    @max_page = Integer((@max_trace + 1) / @traces_per_page) 
59   
60    # last step before fetch - add paging options
61    opt[:limit] = @traces_per_page
62    if page_index > 0
63      opt[:offset] = @traces_per_page * page_index
64    end
65
66    @traces = Trace.find(:all , opt)
67   
68    # put together SET of tags across traces, for related links
69    tagset = Hash.new
70    if @traces
71      @traces.each do |trace|
72        trace.tags.reload if params[:tag] # if searched by tag, ActiveRecord won't bring back other tags, so do explicitly here
73        trace.tags.each do |tag|
74          tagset[tag.tag] = tag.tag
75        end
76      end
77    end
78   
79    # final helper vars for view
80    @display_name = display_name
81    @all_tags = tagset.values
82    @paging_action = paging_action # the action that paging requests should route back to, e.g. 'list' or 'mine'
83    @page = page_index + 1 # nice 1-based external page numbers
84  end
85
86  def mine
87    if @user
88      list(@user, 'mine') unless @user.nil?
89    else
90      redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri
91    end
92  end
93
94  def view
95    @trace = Trace.find(params[:id])
96    unless @trace.public
97      if @user
98        render :nothing, :status => 401 if @trace.user.id != @user.id
99      end
100    end
101  end
102
103  def create
104    filename = "/tmp/#{rand}"
105
106    File.open(filename, "w") { |f| f.write(params[:trace][:gpx_file].read) }
107    params[:trace][:name] = params[:trace][:gpx_file].original_filename.gsub(/[^a-zA-Z0-9.]/, '_') # This makes sure filenames are sane
108    params[:trace].delete('gpx_file') # remove the field from the hash, because there's no such field in the DB
109    @trace = Trace.new(params[:trace])
110    @trace.inserted = false
111    @trace.user = @user
112    @trace.timestamp = Time.now
113
114    if @trace.save
115      saved_filename = "/home/osm/gpx/#{@trace.id}.gpx"
116      File.rename(filename, saved_filename)
117
118      logger.info("id is #{@trace.id}")
119      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."
120      redirect_to :action => 'mine'
121    end
122  end
123
124  def data
125    trace = Trace.find(params[:id])
126    if trace and (trace.public? or (@user and @user == trace.user))
127      send_file(trace.trace_name, :filename => "#{trace.id}.gpx", :type => trace.mime_type, :disposition => 'attachment')
128    else
129      render :nothing, :status => 404
130    end
131  end
132
133  def make_public
134    trace = Trace.find(params[:id])
135    if @user and trace.user == @user and !trace.public
136      trace.public = true
137      trace.save
138      flash[:notice] = 'Track made public'
139      redirect_to :controller => 'trace', :action => 'view', :id => params[:id]
140    end
141  end
142
143  def georss
144    traces = Trace.find(:all, :conditions => ['public = true'], :order => 'timestamp DESC', :limit => 20)
145
146    rss = OSM::GeoRSS.new
147
148    #def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=Time.now)
149    traces.each do |trace|
150      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)
151    end
152
153    response.headers["Content-Type"] = 'application/rss+xml'
154
155    render :text => rss.to_s
156  end
157
158  def picture
159    trace = Trace.find(params[:id])
160    if trace and (trace.public? or (@user and @user == trace.user))
161      send_file(trace.large_picture_name, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline')
162    else
163      render :nothing, :status => 404
164    end
165  end
166
167  def icon
168    trace = Trace.find(params[:id])
169    if trace and (trace.public? or (@user and @user == trace.user))
170      send_file(trace.icon_picture_name, :filename => "#{trace.id}_icon.gif", :type => 'image/gif', :disposition => 'inline')
171    else
172      render :nothing, :status => 404
173    end
174  end
175
176  def api_details
177    trace = Trace.find(params[:id])
178    doc = OSM::API.new.get_xml_doc
179    doc.root << trace.to_xml_node() if trace.public? or trace.user == @user
180    render :text => doc.to_s
181  end
182
183  def api_data
184    render :action => 'data'
185  end
186
187  def api_create
188    #FIXME merge this code with create as they're pretty similar?
189   
190    filename = "/tmp/#{rand}"
191    File.open(filename, "w") { |f| f.write(request.raw_post) }
192    params[:trace] = {}
193    params[:trace][:name] = params[:filename]
194    params[:trace][:tagstring] = params[:tags]
195    params[:trace][:description] = params[:description]
196    @trace = Trace.new(params[:trace])
197    @trace.inserted = false
198    @trace.user = @user
199    @trace.timestamp = Time.now
200
201    if @trace.save
202      saved_filename = "/home/osm/gpx/#{@trace.id}.gpx"
203      File.rename(filename, saved_filename)
204      logger.info("id is #{@trace.id}")
205      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."
206      render :nothing => true
207    else
208      render :nothing => true, :status => 400 # er FIXME what fricking code to return?
209    end
210
211  end
212end
Note: See TracBrowser for help on using the repository browser.