railscasts

问题 Right now in app/views/microposts/home.html.erb I have.. <% form_tag purchases_path, :method => 'get', :id => "products_search" do %> <p> <%= text_field_tag :search, params[:search] %> <%= submit_tag "Search", :name => nil %> </p> <% end %> <% form_tag sales_path, :method => 'get', :id => "sales_search" do %> <p> <%= text_field_tag :search, params[:search] %> <%= submit_tag "Search", :name => nil %> </p> <% end %> and then in micropost.rb I have scope :purchases, where(:kind => "purchase")

问题 I followed the http://railscasts.com/episodes/362-exporting-csv-and-excel and set up an Excel Download in my Rails application. My controller code looks like this: def show @project = Project.find(params[:id]) @project.tasks.order(:name) respond_to do |format| format.html format.json { render json: @project } format.xls end end and in my view I create the link to download the excel file like this: .dl_xls= link_to "Download xls", url_for(:format => 'xls') Now the generated excel file is

问题 I am building an app that involves a calendar. I found that the railscast for building a calendar although dated proved to be very helpful. I have everything up and running I am just trying to allow for the contents on each date to be organized by the datetime and not just the date so they appear in the right chronological order. My current controller looks like this: def index @lessons = Lesson.all @lesson_by_date = @lessons.group_by { |i| i.lesson_date.to_date } @date = params[:date] ? Date

问题 I'm trying to create a record from a form. I've used railscast 136 as ground work. When I trying to submit I get a 500 error for missing partial. I've created the controller correlated javascript view but it is requesting a view with the same name as the model. error message Rendered appointments/create.js.erb (3.8ms) Completed 500 Internal Server Error in 12ms ActionView::Template::Error (Missing partial appointments/appointment with {:locale=>[:en], :formats=>[:js, :html], :handlers=>[:erb,

问题 i am following Ryan Bates episode on nested form fields and have added the bit of jquery suggested at the end of part 2. Everything works well(i am able to add fields and remove fields). i now want to limit the number of fields you can add in the form. in my application.js i have function add_fields(link, association, content) { var new_id = new Date().getTime(); var regexp = new RegExp("new_" + association, "g") $(link).parent().before(content.replace(regexp, new_id)); } as Ryan Bates has

问题 I'm following along with railscast 196. I've got two levels of associations. App -> Form -> Question. This is the new action in the form controller. def new @app = App.find(params[:app_id]) @form = Form.new 3.times {@form.questions.build } end the view is displaying all 3 questions fine and I can submit the form... but nothing is inserted into the database for the questions. Here is my create action def create @app = App.find(params[:app_id]) @form = @app.forms.create(params[:form]) respond

问题 can someone give me a quick solution please? I have done this: My routes: offline = Rack::Offline.configure do cache ActionController::Base.helpers.asset_path("application.css") cache ActionController::Base.helpers.asset_path("application.js") cache ActionController::Base.helpers.asset_path("jquery.min.css") cache ActionController::Base.helpers.asset_path("jquery.tmpl.min.css") cache ActionController::Base.helpers.asset_path("style.js") # cache ActionController::Base.helpers.asset_path(

问题 Just was checking this episode by Ryan Bates (http://railscasts.com/episodes/52-update-through-checkboxes) and it seems that Rails 3.2.x has different setup. Thus map.resources :tasks, :collection => { :complete => :put } does not produce expected result, as it drops an issue that complete_tasks_path does not exist. Could you please let me know how to customise routing in this particular situation? Also seems that check_box_tag requires different attributes other than Ryan puts in there. AS

问题 So this is the authorization code I wrote based on Railscast #386. The problem is that the block works on all controllers except for user_controller . In other words, any user can triger edit and update actions on any other user, even though the block given to it is the same as that of favors edit and update actions. def initialize(user) allow :users, [:new, :create, :show] allow :sessions, [:new, :create, :destroy] allow :favors, [:index, :show] if user allow :users, [:edit, :update] do |usr

问题 I'm following railscasts episode 381 in an attempt to allow multiple image uploads to my app with the carrierwave gem & jQuery File upload. My app is for a college project & is set up with a hikingtrails model which has many & accepts nested attributes for a pics model . After I set the multiple option of the file_field to true & hard-coding the input name attribute i.e. <%= form.file_field :image, multiple: true, name: "pic[image]" %> , carrierwave stops working, it doesn't upload a single