thingspeak/app/controllers/channels_controller.rb

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2011-03-27 22:56:15 +02:00
class ChannelsController < ApplicationController
before_filter :require_user, :except => [ :show, :post_data ]
before_filter :set_channels_menu
protect_from_forgery :except => :post_data
def index
@channels = current_user.channels
end
def show
@channel = Channel.find(params[:id]) if params[:id]
# if owner of channel
get_channel_data if current_user and @channel.user_id == current_user.id
end
def edit
get_channel_data
end
def update
@channel = Channel.find(params[:id])
# make sure channel belongs to current user
check_permissions(@channel)
# protect against bots
render :text => '' and return if params[:userlogin].length > 0
@channel.update_attributes(params[:channel])
@channel.name = "#{t(:channel_default_name)} #{@channel.id}" if params[:channel][:name].empty?
@channel.save
redirect_to channel_path(@channel.id) and return
end
def create
# protect against bots
render :text => '' and return if params[:userlogin].length > 0
# get default name for field
@d = t(:channel_default_field)
# add channel with defaults
@channel = Channel.new(:field1 => "#{@d}1")
@channel.user_id = current_user.id
@channel.save
# now that the channel is saved, we can create the default name
@channel.name = "#{t(:channel_default_name)} #{@channel.id}"
@channel.save
# create an api key for this channel
@api_key = ApiKey.new
@api_key.channel_id = @channel.id
@api_key.user_id = current_user.id
@api_key.write_flag = 1
@api_key.api_key = generate_api_key
@api_key.save
# redirect to edit the newly created channel
redirect_to edit_channel_path(@channel.id)
end
def destroy
@channel = Channel.find(params[:id])
# make sure channel belongs to current user
check_permissions(@channel)
# do the delete
@channel.delete
redirect_to channels_path
end
# response is '0' if failure, 'entry_id' if success
def post_data
status = '0'
feed = Feed.new
api_key = ApiKey.find_by_api_key(get_userkey)
# if write persmission, allow post
if (api_key && api_key.write_flag)
channel = Channel.find(api_key.channel_id)
# update entry_id for channel and feed
entry_id = channel.last_entry_id.nil? ? 1 : channel.last_entry_id + 1
channel.last_entry_id = entry_id
feed.entry_id = entry_id
# try to get created_at datetime if appropriate
if params[:created_at]
begin
@feed.created_at = DateTime.parse(params[:created_at])
# if invalid datetime, don't do anything--rails will set created_at
rescue
end
end
# strip line feeds from end of parameters
params.each do |key, value|
params[key] = value.sub(/\\n$/, '').sub(/\\r$/, '')
end
# set feed details
feed.channel_id = channel.id
feed.raw_data = params
feed.field1 = params[:field1] if params[:field1]
feed.field2 = params[:field2] if params[:field2]
feed.field3 = params[:field3] if params[:field3]
feed.field4 = params[:field4] if params[:field4]
feed.field5 = params[:field5] if params[:field5]
feed.field6 = params[:field6] if params[:field6]
feed.field7 = params[:field7] if params[:field7]
feed.field8 = params[:field8] if params[:field8]
feed.status = params[:status] if params[:status]
if channel.save && feed.save
status = entry_id
end
end
# output response code
render :text => '0', :status => 400 and return if status == '0'
render :text => status
end
end