How to refresh Image through ajax request


#1

Hi all ,
I am very new for ruby. I am using Ajax Request(Rmagick in controller)
for changing image on my DIV but the problem is it refresh for first
time only then after i have to refresh the browser always. If anybody
having any solution, Please let me know . I am posting my code here

Code in rhtml file

<%= form_remote_tag({:url=>{:controller=>‘image_builders’, :action
=>‘index’}, :update =>‘photo’})%>


Type
<%= submit_tag 'Create Image' %>
Image:
      <div id="photo" style="width:99%;">

      </div>
      </div>

===============================================================================
code in controller

def index
@Rows =20
@Cols = 120
@alpha = params[:alpha].to_i
@margin = params[:margin].to_i
if params[:height].to_i >9000 || params[:width].to_i > 9000
if params[:height].to_i >9000
params[:height] = 8999
end
if params[:width].to_i > 9000
params[:width] = 8999
end
end
if params[:height] && params[:width]
@Rows =params[:height].to_i
@Cols = params[:width].to_i
end
@Start = params[:input_field_1]
@End = params[:input_field_2]
if params[:type] == ‘gradation’
fill = Magick::GradientFill.new(0, 0, 0, @Cols, @Start, @End)
img = Magick::Image.new(@Rows, @Cols, fill)
img.opacity = @alpha/ 127.0 * Magick::TransparentOpacity if
@alpha != 0
img_new = img.rotate(90)
if params[:reverse]
img_rev = img_new.rotate(270)
img_rev.write(“public/images/xyz.jpg”)
render :text => “
else
img_new.write(“public/images/xyz.jpg”)
render :text => “
end
end
end


#2

On 17 Jan 2009, at 07:33, Kumar S. wrote:

Hi all ,
I am very new for ruby. I am using Ajax Request(Rmagick in controller)
for changing image on my DIV but the problem is it refresh for first
time only then after i have to refresh the browser always. If anybody
having any solution, Please let me know . I am posting my code here

Is it your browser caching the image?

Fred