As far as I can tell, this is a views and controller problem.<\/p>\n
I need to allow users to edit multiple records in one of my database tables. Railscast 165 deals with a similar situation, but it’s not quite on point for me: http:\/\/railscasts.com\/episodes\/165-edit-multiple<\/p>\n
I have a fixed set of products, and I need to let users add associated varieties to those products. I’ve considered the easier solution of requiring the user to go to a product page, and edit one individual product at a time, but that won’t work for my app. Instead, I need to provide more of an admin style functionality for this one task.<\/p>\n
The model relationship here is simple. A product Currently, I’ve got the form rendering with the dropdown displaying the right product choices. The problem seems to be that the variety input is rendering in html like this:<\/p>\n To render parts of the form, I’m following the Advanced Rails Recipes multi-model form technique (i.e. the Ryan Bates way). I spent about 10 hours trying to do this and it seems that I’m now very close, but I don’t know what the problem is at this point.<\/p>\n Here’s my setup:<\/p>\n Note: For now, I’m not letting the users edit the varieties they submit. So I removed the following line from the Ryan Bates technique because it was throwing an error and I don’t think I need it, but I could be wrong:<\/p>\n Here’s what I have in this _variety partial:<\/p>\n NOTE: Currently the javascript stuff you see is working. On the edit_multiple view page, I can dynamically add and remove the products\/varieties inputs. As I mentioned, the dropdown is also populating properly. So it seems that I just need to get the variety input to render properly and get the controller to properly process it. Thanks for your help!<\/p>\n When I select one product from the dropdown and type a name in the variety input, the submit throws the following error and trace:<\/p>\n \/Users\/michael\/dev\/fresh\/app\/controllers\/products_controller.rb:73:in The log shows the correct product_id and the correct name I entered, but you can see it’s calling a nil class:<\/p>\n When I try to enter more than one product\/variety record, the log isn’t recognizing anything except the first one. I get the same result as when I type in just one product\/variety record.<\/p>\n Originally posted 2013-11-09 21:11:09. <\/small><\/p>","protected":false},"excerpt":{"rendered":" As far as I can tell, this is a views and controller problem. I need to allow users to edit multiple records in one of my database tables. Railscast 165 deals with a similar situation, but it’s not quite on point for me: http:\/\/railscasts.com\/episodes\/165-edit-multiple I have a fixed set of products, and I need to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-655","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=655"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/655\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}has_many<\/code> varieties, and variety belongs_to<\/code> product. In my user interface, I simply let the user select a product from a dropdown menu containing all of the available products on the site, and then the user can type the name of a variety in a text input. For example, if we’re talking about apples, then the user can select apples from the product dropdown, and he might type in “fuji” and a variety. I simply need to save the product_id<\/code> and the variety[name] to the varieties table. However, I need to do this for multiple records at one time.<\/p>\nVariety\n\n<\/code><\/pre>\nProducts Controller<\/h2>\n
def edit_multiple\n @products = Product.find(:all)\nend\n\n def update_multiple\n params[:product][:existing_variety_attributes] ||= {}\n\n @products = Product.find(:all)\n if @products.each do |product|\n product.update_attributes!(params[:product].reject { |k,v| v.blank? })\n end\n flash[:notice] = \"Updated products!\"\n redirect_to edit_user_path(self.current_user)\n else\n render :action => 'edit'\n flash[:error] = \"Something went wrong. Please try again.\"\n end\nend\n<\/code><\/pre>\nmap.resources :products, :collection => { :edit_multiple => :get, :update_multiple => :put}\n<\/code><\/pre>\n\n update_multiple_products_path, :html => { :method => :put } do |f| %>\n\n\n 'variety' %>\n\n\n
\n\n\n\n<\/code><\/pre>\n\n \n true}) %>\n \n \n\n\n<\/code><\/pre>\nUpdate<\/h3>\n
ActiveRecord::UnknownAttributeError in ProductsController#update_multiple\nunknown attribute: product_id\n\n\/Library\/Ruby\/Gems\/1.8\/gems\/activerecord-2.3.3\/lib\/active_record\/base.rb:2740:in `attributes='\n\/Library\/Ruby\/Gems\/1.8\/gems\/activerecord-2.3.3\/lib\/active_record\/base.rb:2736:in `each'\n\/Library\/Ruby\/Gems\/1.8\/gems\/activerecord-2.3.3\/lib\/active_record\/base.rb:2736:in `attributes='\n\/Library\/Ruby\/Gems\/1.8\/gems\/activerecord-2.3.3\/lib\/active_record\/base.rb:2628:in `update_attributes!'\n\/Users\/michael\/dev\/fresh\/app\/controllers\/products_controller.rb:74:in `update_multiple'\n<\/code><\/pre>\neach' \/Users\/michael\/dev\/fresh\/app\/controllers\/products_controller.rb:73:in<\/code> update_multiple’<\/p>\nProcessing ProductsController#update_multiple (for 127.0.0.1 at 2009-10-08 07:31:05) [PUT]\n Parameters: {\"commit\"=>\"Submit Varieties\", \"authenticity_token\"=>\"zzkveSe7qzv2NY8WPrR2cYS376u6DBiz8Vc9iNFLQy8=\", \"product\"=>{\"product_id\"=>\"5\"}, \"nil_class\"=>{\"name\"=>\"yellow\"}}\n<\/code><\/pre>\n