search for: all_valid

I have a form that I want to use to update multiple objects. In the controller, @grades = Grade.find(params[:grade].keys) @grades.each_with_index do |grade, i| grade.update_attribute(params[:grade][i]) end all_valid = @grades.inject(true) {|memo, c| c.valid? && memo } this doesn''t update the attributes as I would expect. (I would just use Grade.update(params[:grade].keys,params[:grade].values) but I can''t figure out how to validate the data using that method. Could someone please e...

I''m trying to provide our customers with a page where they can add up to 20 items to their cart in one form. The form simply has 20 rows with each row containing a text input for product code and a text input for quantity. I''ve tried having the controller create an array that has an object for each row by looping through something like: @new_items[1] = Cart.new and the

I just put this up on the wiki, and thought I''d share in case it''s useful to anyone else. This is handy if you don?t want to wrap your input elements inside a div when an error occurs, but instead want to add some sort of CSS style to fields with errors: ActionView::Base.field_error_proc = Proc.new do |html_tag, instance| msg = instance.error_message error_style =

...ve was to use something like [in form] > <% for @comment in @post.comments %> > <%= text_field ''comment[]'', ''author'' %> > <%= text_field ''comment[]'', ''body'' %> > <% end %> [in controller] >all_valid = @post.comments.all? { |c| c.valid? } >or >all_valid = @post.comments.inject(true) {|memo, c| c.valid? && memo } but I''m not sure how @post.comments gets filled. I mean, I get how to send @post to the view, but when I return to the controller for validation, what is @post?...

Hello. I''ve been trying this out for the past two days and I can''t seem to get it. I''m going to have a page where you can upload x amount of images at once. Lets say 10 images need to be uploaded, all with a caption. I''d like to have a browse button to choose the file, then the caption. Now, if I put 10 of them in one form, fill them all out and submit, I get