class TraceController < ApplicationController
+ layout 'site'
+
+ before_filter :authorize_web
+ before_filter :require_user, :only => [:mine, :edit, :delete, :make_public]
+ before_filter :authorize, :only => [:api_details, :api_data, :api_create]
+ before_filter :check_database_availability, :except => [:api_details, :api_data, :api_create]
+ before_filter :check_read_availability, :only => [:api_details, :api_data, :api_create]
+
+ # Counts and selects pages of GPX traces for various criteria (by user, tags, public etc.).
+ # target_user - if set, specifies the user to fetch traces for. if not set will fetch all traces
+ def list(target_user = nil, action = "list")
+ # from display name, pick up user id if one user's traces only
+ display_name = params[:display_name]
+ if target_user.nil? and !display_name.blank?
+ target_user = User.find(:first, :conditions => [ "visible = 1 and display_name = ?", display_name])
+ end
+
+ # set title
+ if target_user.nil?
+ @title = "Public GPS traces"
+ elsif @user and @user == target_user
+ @title = "Your GPS traces"
+ else
+ @title = "Public GPS traces from #{target_user.display_name}"
+ end
+
+ @title += " tagged with #{params[:tag]}" if params[:tag]
+
+ # four main cases:
+ # 1 - all traces, logged in = all public traces + all user's (i.e + all mine)
+ # 2 - all traces, not logged in = all public traces
+ # 3 - user's traces, logged in as same user = all user's traces
+ # 4 - user's traces, not logged in as that user = all user's public traces
+ if target_user.nil? # all traces
+ if @user
+ conditions = ["(gpx_files.public = 1 OR gpx_files.user_id = ?)", @user.id] #1
+ else
+ conditions = ["gpx_files.public = 1"] #2
+ end
+ else
+ if @user and @user == target_user
+ conditions = ["gpx_files.user_id = ?", @user.id] #3 (check vs user id, so no join + can't pick up non-public traces by changing name)
+ else
+ conditions = ["gpx_files.public = 1 AND gpx_files.user_id = ?", target_user.id] #4
+ end
+ end
+
+ if params[:tag]
+ @tag = params[:tag]
+
+ files = Tracetag.find_all_by_tag(params[:tag]).collect { |tt| tt.gpx_id }
+ conditions[0] += " AND gpx_files.id IN (#{files.join(',')})"
+ end
+
+ conditions[0] += " AND gpx_files.visible = 1"
+
+ @trace_pages, @traces = paginate(:traces,
+ :include => [:user, :tags],
+ :conditions => conditions,
+ :order => "gpx_files.timestamp DESC",
+ :per_page => 20)
+
+ # put together SET of tags across traces, for related links
+ tagset = Hash.new
+ if @traces
+ @traces.each do |trace|
+ trace.tags.reload if params[:tag] # if searched by tag, ActiveRecord won't bring back other tags, so do explicitly here
+ trace.tags.each do |tag|
+ tagset[tag.tag] = tag.tag
+ end
+ end
+ end
+
+ # final helper vars for view
+ @action = action
+ @display_name = target_user.display_name if target_user
+ @all_tags = tagset.values
+ end
+
+ def mine
+ list(@user, "mine")
+ end
+
+ def view
+ @trace = Trace.find(params[:id])
+
+ if @trace and @trace.visible? and
+ (@trace.public? or @trace.user == @user)
+ @title = "Viewing trace #{@trace.name}"
+ else
+ flash[:notice] = "Trace not found!"
+ redirect_to :controller => 'trace', :action => 'list'
+ end
+ rescue ActiveRecord::RecordNotFound
+ flash[:notice] = "Trace not found!"
+ redirect_to :controller => 'trace', :action => 'list'
+ end
+
+ def create
+ logger.info(params[:trace][:gpx_file].class.name)
+ if params[:trace][:gpx_file].respond_to?(:read)
+ do_create(params[:trace][:gpx_file], params[:trace][:tagstring],
+ params[:trace][:description], params[:trace][:public])
+
+ if @trace.id
+ logger.info("id is #{@trace.id}")
+ 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."
+
+ redirect_to :action => 'mine'
+ end
+ else
+ @trace = Trace.new({:name => "Dummy",
+ :tagstring => params[:trace][:tagstring],
+ :description => params[:trace][:description],
+ :public => params[:trace][:public],
+ :inserted => false, :user => @user,
+ :timestamp => Time.now})
+ @trace.valid?
+ @trace.errors.add(:gpx_file, "can't be blank")
+ end
+ end
+
+ def data
+ trace = Trace.find(params[:id])
+
+ if trace.visible? and (trace.public? or (@user and @user == trace.user))
+ if request.format == Mime::XML
+ send_file(trace.xml_file, :filename => "#{trace.id}.xml", :type => Mime::XML.to_s, :disposition => 'attachment')
+ else
+ send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+ end
+ else
+ render :nothing => true, :status => :not_found
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def edit
+ @trace = Trace.find(params[:id])
+
+ if @user and @trace.user == @user
+ if params[:trace]
+ @trace.description = params[:trace][:description]
+ @trace.tagstring = params[:trace][:tagstring]
+ if @trace.save
+ redirect_to :action => 'view'
+ end
+ end
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def delete
+ trace = Trace.find(params[:id])
+
+ if @user and trace.user == @user
+ if request.post? and trace.visible?
+ trace.visible = false
+ trace.save
+ flash[:notice] = 'Track scheduled for deletion'
+ redirect_to :controller => 'traces', :action => 'mine'
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def make_public
+ trace = Trace.find(params[:id])
+
+ if @user and trace.user == @user
+ if request.post? and !trace.public?
+ trace.public = true
+ trace.save
+ flash[:notice] = 'Track made public'
+ redirect_to :controller => 'trace', :action => 'view', :id => params[:id]
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def georss
+ conditions = ["gpx_files.public = 1"]
+
+ if params[:display_name]
+ conditions[0] += " AND users.display_name = ?"
+ conditions << params[:display_name]
+ end
+
+ if params[:tag]
+ conditions[0] += " AND EXISTS (SELECT * FROM gpx_file_tags AS gft WHERE gft.gpx_id = gpx_files.id AND gft.tag = ?)"
+ conditions << params[:tag]
+ end
+
+ traces = Trace.find(:all, :include => :user, :conditions => conditions,
+ :order => "timestamp DESC", :limit => 20)
+
+ rss = OSM::GeoRSS.new
+
+ traces.each do |trace|
+ rss.add(trace.latitude, trace.longitude, trace.name, trace.user.display_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)
+ end
+
+ render :text => rss.to_s, :content_type => "application/rss+xml"
+ end
+
+ def picture
+ trace = Trace.find(params[:id])
+
+ if trace.inserted?
+ if trace.public? or (@user and @user == trace.user)
+ send_file(trace.large_picture_name, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline')
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ else
+ render :nothing => true, :status => :not_found
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def icon
+ trace = Trace.find(params[:id])
+
+ if trace.inserted?
+ if trace.public? or (@user and @user == trace.user)
+ send_file(trace.icon_picture_name, :filename => "#{trace.id}_icon.gif", :type => 'image/gif', :disposition => 'inline')
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ else
+ render :nothing => true, :status => :not_found
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def api_details
+ trace = Trace.find(params[:id])
+
+ if trace.public? or trace.user == @user
+ render :text => trace.to_xml.to_s, :content_type => "text/xml"
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def api_data
+ trace = Trace.find(params[:id])
+
+ if trace.public? or trace.user == @user
+ send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+ else
+ render :nothing => true, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ end
+
+ def api_create
+ if request.post?
+ do_create(params[:file], params[:tags], params[:description], params[:public])
+
+ if @trace.id
+ render :text => @trace.id.to_s, :content_type => "text/plain"
+ elsif @trace.valid?
+ render :nothing => true, :status => :internal_server_error
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ else
+ render :nothing => true, :status => :method_not_allowed
+ end
+ end
+
+private
+
+ def do_create(file, tags, description, public)
+ # Sanitise the user's filename
+ name = file.original_filename.gsub(/[^a-zA-Z0-9.]/, '_')
+
+ # Get a temporary filename...
+ filename = "/tmp/#{rand}"
+
+ # ...and save the uploaded file to that location
+ File.open(filename, "w") { |f| f.write(file.read) }
+
+ # Create the trace object, falsely marked as already
+ # inserted to stop the import daemon trying to load it
+ @trace = Trace.new({
+ :name => name,
+ :tagstring => tags,
+ :description => description,
+ :public => public,
+ :inserted => true,
+ :user => @user,
+ :timestamp => Time.now
+ })
+
+ # Save the trace object
+ if @trace.save
+ # Rename the temporary file to the final name
+ FileUtils.mv(filename, @trace.trace_name)
+
+ # Clear the inserted flag to make the import daemon load the trace
+ @trace.inserted = false
+ @trace.save!
+ else
+ # Remove the file as we have failed to update the database
+ FileUtils.rm_f(filename)
+ end
+ end
+
end
projects / rails.git / blobdiff