class TraceController < ApplicationController
+ before_filter :authorize_web
+ before_filter :authorize, :only => [:api_details, :api_data, :api_create]
+ layout 'site'
+
+ # 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
+ # paging_action - the action that will be linked back to from view
+ def list (target_user = nil, paging_action = 'list')
+ @title = 'public GPS traces'
+ @title += " tagged with #{params[:tag]}" if params[:tag]
+ @traces_per_page = 20
+ page_index = params[:page] ? params[:page].to_i - 1 : 0 # nice 1-based page -> 0-based page index
+
+ # 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 and display_name != ''
+ @paging_action = 'view'
+ @display_name = display_name
+ @title += " from #{@display_name}"
+ target_user = User.find(:first, :conditions => [ "display_name = ?", display_name])
+ end
+
+ opt = Hash.new
+ opt[:include] = [:user, :tags] # load users and tags from db at same time as traces
+
+ # 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 = ["(public = 1 OR user_id = ?)", @user.id] #1
+ else
+ conditions = ["public = 1"] #2
+ end
+ else
+ if @user and @user.id == target_user.id
+ conditions = ["user_id = ?", @user.id] #3 (check vs user id, so no join + can't pick up non-public traces by changing name)
+ else
+ conditions = ["public = 1 AND user_id = ?", target_user.id] #4
+ end
+ end
+ conditions[0] += " AND users.display_name != ''" # users need to set display name before traces will be exposed
+
+ opt[:order] = 'timestamp DESC'
+ if params[:tag]
+ @tag = params[:tag]
+ conditions[0] += " AND gpx_file_tags.tag = ?"
+ conditions << @tag;
+ end
+
+ opt[:conditions] = conditions
+
+ # count traces using all options except limit
+ @max_trace = Trace.count(opt)
+ @max_page = Integer((@max_trace + 1) / @traces_per_page)
+
+ # last step before fetch - add paging options
+ opt[:limit] = @traces_per_page
+ if page_index > 0
+ opt[:offset] = @traces_per_page * page_index
+ end
+
+ @traces = Trace.find(:all , opt)
+
+ # 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
+ @display_name = display_name
+ @all_tags = tagset.values
+ @paging_action = paging_action # the action that paging requests should route back to, e.g. 'list' or 'mine'
+ @page = page_index + 1 # nice 1-based external page numbers
+ end
+
+ def mine
+ if @user
+ list(@user, 'mine') unless @user.nil?
+ else
+ redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri
+ end
+ end
+
+ def view
+ @trace = Trace.find(params[:id])
+ unless @trace.public
+ if @user
+ render :nothing, :status => :forbidden if @trace.user.id != @user.id
+ end
+ end
+ end
+
+ def create
+ name = params[:trace][:gpx_file].original_filename.gsub(/[^a-zA-Z0-9.]/, '_') # This makes sure filenames are sane
+
+ do_create(name, params[:trace][:tagstring], params[:trace][:description], params[:trace][:public]) do |f|
+ f.write(params[:trace][:gpx_file].read)
+ end
+
+ 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
+ end
+
+ def data
+ trace = Trace.find(params[:id])
+ if trace and (trace.public? or (@user and @user == trace.user))
+ send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+ else
+ render :nothing, :status => :not_found
+ end
+ end
+
+ def make_public
+ trace = Trace.find(params[:id])
+ if @user and trace.user == @user and !trace.public
+ trace.public = true
+ trace.save
+ flash[:notice] = 'Track made public'
+ redirect_to :controller => 'trace', :action => 'view', :id => params[:id]
+ end
+ end
+
+ def georss
+ traces = Trace.find(:all, :conditions => ['public = true'], :order => 'timestamp DESC', :limit => 20)
+
+ rss = OSM::GeoRSS.new
+
+ #def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=Time.now)
+ traces.each do |trace|
+ 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)
+ end
+
+ render :text => rss.to_s, :content_type => "application/rss+xml"
+ end
+
+ def picture
+ begin
+ trace = Trace.find(params[:id])
+
+ 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, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def icon
+ begin
+ trace = Trace.find(params[:id])
+
+ 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, :status => :forbidden
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def api_details
+ begin
+ 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
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def api_data
+ render :action => 'data'
+ end
+
+ def api_create
+ do_create(params[:filename], params[:tags], params[:description], true) do |f|
+ f.write(request.raw_post)
+ end
+
+ if @trace.id
+ render :nothing => true
+ else
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+private
+
+ def do_create(name, tags, description, public)
+ filename = "/tmp/#{rand}"
+
+ File.open(filename, "w") { |f| yield f }
+
+ @trace = Trace.new({:name => name, :tagstring => tags,
+ :description => description, :public => public})
+ @trace.inserted = false
+ @trace.user = @user
+ @trace.timestamp = Time.now
+
+ if @trace.save
+ File.rename(filename, @trace.trace_name)
+ else
+ FileUtils.rm_f(filename)
+ end
+ end
+
end
projects / rails.git / blobdiff