Adding style to model (paperclip)

Rails
1

hello,

I have a model (item) with one attachment (photo) and one style (small):

class Producto < ActiveRecord::Base
has_attached_file :photo, :styles => { :small => “50x50”},
end

I would like to add a new style (:large), so I modify item.rb:

class Producto < ActiveRecord::Base
has_attached_file :photo, :styles => {{ :small => “50x50”},{ :large =>
“150x150”}}
end

it seems to be ok, but when I submit in edit or new views, I get the
following error:

NoMethodError (undefined method []' for nil:NilClass): app/controllers/admin/items_controller.rb:64:inupdate’
app/controllers/admin/items_controller.rb:63:in `update’

Controller code:
def update
@item = Item.find(params[:id])
respond_to do |format|
if @item.update_attributes(params[:item])
format.html { redirect_to(admin_items_path, :notice => ‘OK’) }
else
format.html { render :action => “edit” }
end
end
end

If I remove the new style (:large) in item.rb everything works fine
again…

Could someone help me?

Thanks

2

Not sure, but have you tried using the syntax from the docs,
particularly the last example?

I wonder if yours is valid Ruby but invalid has_attached_file syntax.

3

I changed the following according with documentation:

has_attached_file :photo, :styles => {
:small => {:geometry => ‘50x50#’},
:large => {:geometry => ‘150x150#’}
}

And it works! Using syntax from the docs seems to be a very good idea!

:slight_smile:

Thanks