undefined method `collect' for 2:Fixnum - ruby-on-rails

Question

def function1
#user=User.find(params[:user_id])
#participants=Participant.find_all_by_user_id(params[:user_id])
bar_1_data = #user.get_total
bar_2_data = params[:count]
color_1 = 'c53711'
color_2 = '0000ff'
min=0
max=100
puts(bar_1_data) # prints 2 on console
puts(bar_2_data) # prints 3 on console
puts (bar_1_data).is_a? Integer # prints true
puts (bar_2_data).is_a? Integer # prints false
bc=GoogleChart::BarChart.new("300x80", " ", :horizontal, false)
bc.data " ", [100], 'ffffff'
bc.data "Bar1", bar_1_data, color_1
bc.data "Bar2", bar_2_data.to_i, color_2
bc.axis :x, :range => [min,max]
bc.show_legend = true
bc.stacked = false
bc.data_encoding = :extended
#bc= bc.to_url
end
end
I am getting the argument error "comparison of String with 100 failed" int the above controller code. Then I changed the lines
bc.data "Bar1", bar_1_data, color_1
bc.data "Bar2", bar_2_data, color_2
to
bc.data "Bar1", bar_1_data.to_i, color_1
bc.data "Bar2", bar_2_data.to_i, color_2
which gives me undefined method collect for 2:Fixnum at line #bc= bc.to_url.
On console it gives the following error:
NoMethodError (undefined method `collect' for 2:Fixnum):
gchartrb (0.8) lib/google_chart/base.rb:499:in `extended_encode'
gchartrb (0.8) lib/google_chart/base.rb:461:in `encode_data'
gchartrb (0.8) lib/google_chart/bar_chart.rb:69:in `process_data'
gchartrb (0.8) lib/google_chart/bar_chart.rb:68:in `collect'
gchartrb (0.8) lib/google_chart/bar_chart.rb:68:in `process_data'
gchartrb (0.8) lib/google_chart/base.rb:440:in `add_data'
gchartrb (0.8) lib/google_chart/base.rb:305:in `prepare_params'
gchartrb (0.8) lib/google_chart/base.rb:77:in `to_url'
app/controllers/assess_controller.rb:139:in `function1'
gchartrb (0.8) lib/google_chart/bar_chart.rb:22:in `initialize'
app/controllers/assess_controller.rb:131:in `new'
app/controllers/assess_controller.rb:131:in `function1'
/Library/Ruby/Gems/1.8/gems/hoptoad_notifier-2.4.11/lib/hoptoad_notifier/rack.rb:27:in `call'
/Library/Ruby/Gems/1.8/gems/hoptoad_notifier-2.4.11/lib/hoptoad_notifier/user_informer.rb:12:in `call'
Rendering rescues/layout (internal_server_error)
Tried printing bc in the view as <p><img src="<%= puts (#bc) %>" ></p>,it doesn't print anything, but when I am printing bc in the controller it prints
#<GoogleChart::BarChart:0x103be9660>.
Am I not sending it correctly to the view? I have tried both #bc=bc.to_url and puts bc.to_url as in http://gchartrb.rubyforge.org/.
What am I missing?

Answer 1

Without knowing the api for google charts, I see this:
bc.data " ", [100], 'ffffff'
bc.data "Bar1", bar_1_data, color_1
bc.data "Bar2", bar_2_data.to_i, color_2
The parameters of the first line are of type String, Array, String.
The parameters of the next two are String, Fixnum, String
Your error message is undefined method collect for 2:Fixnum ... so perhaps you should change the Fixnum to Array.
bc.data " ", [100], 'ffffff'
bc.data "Bar1", [bar_1_data], color_1
bc.data "Bar2", [bar_2_data.to_i], color_2

Answer 2

It looks like you're loading bar_1_data and bar_2_data into arrays. Thus the error undefined method to_i for Array.
Instead of:
bar_1_data = [#user.get_total]
bar_2_data = [params[:count]]
Just try
bar_1_data = #user.get_total
bar_2_data = params[:count]
Note that putting your data inside [] brackets means it's now an array of one item.