Hi Folks,
since I have scruffy up and running now I´d like to integrate the
desired images on some of my rails views. But neither scruffy nor rails
docs say something about this and I cannot find examples or help on
this. So I hope somebody on this forum has experiences in integrating
scruffy images on rails views.
I find out how to go the easy and obvious way: Export image to a file
and then bind the exported file on the view template. But I wonder if I
cannot get scruffy images directly on my rails pages without exporting
it to disk first.
My approach with a simple example from Brastens page:
I created this method in my views helper class:
def generate_img()
graph = Scruffy::Graph.new
graph.title = "Comparative Agent Performance"
graph.value_formatter =
Scruffy::Formatters::Percentage.new(:precision => 0)
graph.add :stacked do |stacked|
stacked.add :bar, ''Jack'', [30, 60, 49, 29, 100, 120]
stacked.add :bar, ''Jill'', [120, 240, 0, 100, 140, 20]
stacked.add :bar, ''Hill'', [10, 10, 90, 20, 40, 10]
end
graph.point_markers = [''Jan'', ''Feb'',
''Mar'', ''Apr'', ''May'',
''Jun'']
graph.render(:width => 800, :as => ''JPG'')
end
And in my views rhtml page I put this:
<%= generate_img %>
Unfortunately it display rubbish instead of the expected image.
The encapsulation with the <img> tag is also not working.
Can anyone point me to the right direction?
Thanks & Regards,
Christian
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Okay I figured it out myself, should have had a closer look on this
forum before ;-)
Here we go:
In my controller I added this method:
def show_img
graph = Scruffy::Graph.new
graph.title = "Comparative Agent Performance"
graph.value_formatter =
Scruffy::Formatters::Percentage.new(:precision => 0)
graph.add :stacked do |stacked|
stacked.add :bar, ''Jack'', [30, 60, 49, 29, 100, 120]
stacked.add :bar, ''Jill'', [120, 240, 0, 100, 140, 20]
stacked.add :bar, ''Hill'', [10, 10, 90, 20, 40, 10]
end
graph.point_markers = [''Jan'', ''Feb'',
''Mar'', ''Apr'', ''May'',
''Jun'']
send_data(graph.render(:width => 800, :as => ''PNG''),
:type =>
''image/png'', :disposition=> ''inline'')
end
And in the views rhtml file I added this:
<img src="<%= url_for(:action => ''show_img'')
%>"/>
And now it works!
Regards,
Chris
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