ruby-on-rails-3.2

问题 I'm using Spree for a ecommerece site, each product that will be sold comes in a large number of colors and most customers will want to purchase different colors of the same product (e.g. variants). I want customers to be allowed to add multiple variants of the same product on the same page, I currently have a list of variants with a radio button that allows a choice of variant and quantity to be purchased. Instead I just want a number of quantity boxes that default to zero so the customer

问题 I am newbie to rails , I am using devise from ryan bates video tutorial , and , i am stuck at one point I have created user , role relationship and in the sign up page , i need to provide select option group for existing roles , in my sign up view page i am writing <%= collection_select(:user,:roles,Role.find(:all),:id,:name) %> i dont precisely understand collection_select method , kindly help what i might be doing wrong my models 1 : user.rb class User < ActiveRecord::Base has_and_belongs

问题 I install rails admin and include all model in active record in rails admin, first time, when install rails admin display me this error NoMethodError in RailsAdmin::MainController#index undefined method `per_page_kaminari' for #<ActiveRecord::Relation:0x00000006713e18> and fixed it by added this configure Kaminari.configure do |config| config.page_method_name = :per_page_kaminari end when install acts_as_taggable_on gem in project, rails admin did't add tag model in it ( i added field tags

问题 I am trying to filter results by age using ransack, but ransack is giving me an undefined method error. I have the Users DOB in my database and in my users model I have an age method that calculates the age of the user. It works perfectly fine and I am able to call the users age like this: @user = User.find(1) @user.age Now for ransack I have the following in my controller: def index @search = User.search(params[:q]) @users = @search.result end In my view, I have: <%= search_form_for @search

问题 Where can i read more about Rails 3.2's Data Store feature, in which there's the option to store key-value in a textfield mentioned here: Is there a best practices/coherent way to update a database field that contains a hash key-value store? This is a seperate question because i was not able to comment on previous question. 回答1: Here is a nice blog post on the subject: http://rawonrails.blogspot.com/2012/02/using-activerecordstore-with-rails-32.html 来源： https://stackoverflow.com/questions

问题 I am getting error like [ pid=22895 thr=139814677706720 file=ext/apache2/Hooks.cpp:884 time=2013-04-18 21:10:56.113 ]: Unexpected error in mod_passenger: An error occurred while receiving HTTP upload data: End of file found (70014) Backtrace: in 'boost::shared_ptr<Passenger::BufferedUpload> Hooks::receiveRequestBody(request_rec*)' (Hooks.cpp:1321) in 'int Hooks::handleRequest(request_rec*)' (Hooks.cpp:585) 回答1: I got solution. If your server in cantos then change this line in your httpd.conf

问题 I got a scenario to have relational tables like a "section has many elements", so I thought of going for has_many relation model like a section has many elements. I got some suggestions from our client saying to save the data as JSON inside a column instead of multiple tables. I am bit confused which approach I should go with. Suggestions are welcome. This is the model am proposing eg : section has_many elements Table : sections id type 1 page Table : elements id type content section_id 1

问题 I am trying to rake erd to generate diagrams for models in my rails application. I am on windows 7 and graphviz is installed When I run rake erd OR rake erd filetype=dot I am getting following error $ rake erd --trace ** Invoke erd (first_time) ** Invoke erd:generate (first_time) ** Invoke erd:options (first_time) ** Execute erd:options ** Invoke erd:load_models (first_time) ** Execute erd:load_models Loading application environment... ** Invoke environment (first_time) ** Execute environment

问题 I am trying to create a form where I can edit all of the items in a collection individually in a single view. I used Railscast #198 ( http://railscasts.com/episodes/198-edit-multiple-individually ) as a general guide but did not include the checkboxes since I want to just edit every item in the collection at once (not select which ones to edit). With what I currently have, the form displays correctly but I get this type of error upon submit: ArgumentError in ProceduresController#update

问题 Using Rails 3.2 and Twitter Bootstrap “bootstrap-popover.js" and "bootstrap-tooltip.js" here This is what I'd like to happen : for when I hover over: <li> <a href="#" class="thumbnail"><img src="http://placehold.it/125x100" alt=""></a> </li> In both “bootstrap-popover.js" and "bootstrap-tooltip.js" I have $('a').popover(placement:'top'); . What other options could I possibly specify in order to have the popout appear like it is in the picture above, with options "A title" and "And here's some