Thanks guys.. Here is some further information to help you determine
what the problem is..
*************Index View(Store)*******************
<% if @cameras.count > 1 then %>
<% @cameratypes.each do |camera| -%>
<% @image_url = find_first_in_group(camera.camtype)%>
<%= link_to(image_tag(@image_url)) %>
<div>
<h3><%=h camera.camtype%></h3>
</div>
<% end %>
<% end %>
*************Store_controller*******************
class StoreController < ApplicationController
def index
@cameras = Camera.find_cameras_for_sale
@cameratypes = Camera.find_cameras_by_camtype
@cameramakes = Camera.find_cameras_by_make
end
##This is only suppose to pass the value on to the main camera model
def find_first_in_group(camtype)
Camera.find_first_group_image(camtype)
end
end
*************Camera model***********************
####Just an extract of the specific method being used
def self.find_first_group_image(camtype)
find(:first,
:select => "image_url",
:conditions => ["camtype = ?", camtype])
end
****************Error message*******************
NoMethodError in Store#index
Showing app/views/store/index.html.erb where line #5 raised:
undefined method `find_first_in_group' for
#<ActionView::Base:0x7f6bef401980>
Extracted source (around line #5):
2:
3: <% if @cameras.count > 1 then %>
4: <% @cameratypes.each do |camera| -%>
5: <% @image_url = find_first_in_group(camera.camtype)%>
6: <%= link_to(image_tag(@image_url)) %>
7: <div>
8: <h3><%=h camera.camtype%></h3>
************************************************
The code is supposed to step through all the different camera types and
then look up the first table entry for every type. It should then just
extract the image_url value of that first entry of the unique camera
type. I then wish to turn this into clickable links which will display
the camera models of every type.
I have managed to get this working by doing the SQL(find) from the index
view, but will be penalized for my assignment if I leave it like that,
because we are told to do all processing in the model itself.
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