thingspeak/app/controllers/charts_controller.rb

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2011-03-27 22:56:15 +02:00
class ChartsController < ApplicationController
before_filter :require_user, :only => [:edit]
def edit
# params[:id] is the windows ID
@channel = current_user.channels.find(params[:channel_id])
window_id = params[:id]
logger.debug "Windows ID is #{window_id}"
window_detail = @channel.windows.find(window_id).becomes(ChartWindow).window_detail
options = window_detail.options unless window_detail.nil?
logger.debug "Options for window #{window_id} are " + options.inspect
render :partial => "charts/config", :locals => {
:displayconfig => false,
:title => @channel.name,
:src => "/channels/#{@channel.id}/charts/#{window_id}",
:options => options,
:index => window_id,
:width => Chart.default_width,
:height => Chart.default_height
}
end
def index
set_channels_menu
@channel = Channel.find(params[:channel_id])
@channel_id = params[:channel_id]
@domain = domain
# default chart size
@width = Chart.default_width
@height = Chart.default_height
check_permissions(@channel)
end
def show
# allow these parameters when creating feed querystring
feed_params = ['key','days','start','end','round','timescale','average','median','sum','results','location','status']
# default chart size
@width = Chart.default_width
@height = Chart.default_height
# add extra parameters to querystring
@qs = ''
params.each do |p|
@qs += "&#{p[0]}=#{p[1]}" if feed_params.include?(p[0])
end
# fix chart colors if necessary
params[:color] = fix_color(params[:color])
params[:bgcolor] = fix_color(params[:bgcolor])
# set ssl
@ssl = (get_header_value('x_ssl') == 'true')
@domain = domain(@ssl)
# should data be pushed off the end in dynamic chart
@push = (params[:push] and params[:push] == 'false') ? false : true
@results = params[:results]
render :layout => false
end
# save chart options
def update
#Check to see if we're using the new options, or the old
@channel = Channel.find(params[:channel_id])
@status = 0
# check permissions
if @channel.user_id == current_user.id
logger.debug "Saving Data with new options " + params[:newOptions].to_s
# save data
if params[:newOptions]
logger.debug "Updating new style options on window id #{params[:id]} with #{params[:newOptions][:options]}"
chart_window = @channel.windows.find(params[:id]).becomes(ChartWindow)
chart_window.window_detail.options = params[:newOptions][:options]
if !chart_window.save
raise "Couldn't save the Chart Window"
end
end
if @channel.save
@status = 1
end
end
# return response: 1=success, 0=failure
render :json => @status.to_json
end
private
# fixes chart color if user forgets the leading '#'
def fix_color(color)
# check for 3 or 6 character hexadecimal value
if (color and color.match(/^([0-9]|[a-f]|[A-F]){3}(([0-9]|[a-f]|[A-F]){3})?$/))
color = '#' + color
end
return color
end
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end