link-to

问题 I am using Ruby on Rails 3.0.7 and I would like to generate a link_to to the controller action edit , dynamically . I have to use it in a partial template but the issue is that I am rendering that same partial template for different model data (that is, I pass local variables of different class instances in that). So I can not use the route "magical RoR way" `edit_<singular_name_of_the_resource>_path(<resource_class_instance>)`. I would like to make something like the following: link_to(

问题 I am building a fairly simple recipe app to learn RoR, and I am attempting to allow a user to save a recipe by clicking a link rather than through a form, so I am connecting the user_recipe controllers 'create' function through a link_to. Unfortunately, for some reason the link_to is calling the index function rather than the create. I've written the link_to as <%= "save this recipe", :action => 'create', :recipe_id => @recipe %> this link is on the user_recipes/index.html.erb and is calling

问题 If i have the following javascript code var myVar = 0; function setNewValforVar(newValue){ myVar = newValue; } and i'm calling setNewValforVar function n times so when I click on a link it'd send myVar value to the controller action in a remote link like <%=link_to "My Link",{:action=>"myAction"},:data=>''sval='+myVar',:remote=>true%> I Rails 2.3.x I'd do this with <%=link_to_remote "My Link",:url=>{:action=>"myAction"},:with=>"'sval='+myVar"%> and i was getting this on the controller's

问题 I have the following link in my Rails 3 application: link_to("Invoice", "/jobs/#{job.id}/invoice") When user clicks it, the application shows an invoice. I would like to display a warning message when job.price is missing, asking the user whether to continue or not. Then, it should be redirected to the invoice page only if user chose "yes". What is the easiest way to implement this ? 回答1: This worked for me: link_to("Invoice", "/jobs/#{job.id}/invoice", :confirm => (job.price ? '' : "Job

问题 In my view I want the user to be able to browse a catalog of products. The hierarchy is as following: Category Product AdditionalInfoForm In my main view I render a partial for the categories: #opContent = render :partial => 'op_main_categories' The op_main_categories partial is defined as following: - @controller.getPortalCategories.each do |c| = link_to_function "#{c.name}", :class => 'opCategoryHeaderText' do |page| - partial = escape_javascript(render :partial => 'op_secondary_categories'

问题 I'm currently trying to use link_to with a helper method that creates links for creating items dynamically, rather than using the new_object_path methods. Rails 3 allows for polymorphic URLs, which fl00r helped me identify and use in the form I was originally searching for. However, while using Rails' polymorphic_url method as shown here does pass the argument in the http request, the related form field on the returned page isn't filled in, and isn't getting set. I'm trying to build an order

问题 We have a link_to sending an ajax post, and are wondering if there's a way to change the content of the sending tag. We basically want to update the database, then change the icon in the link_to block. <%= link_to add_favorite_path({type: type, id: id}), type:"button", disable_with: '...', :method => :post, :remote => true, class: 'btn btn-default btn-sm', id: "#{type}-#{id}" do %> <i class="fa fa-plus"></i> <% end %> Here's the favorites contoller: class FavoritesController <

问题 If I have a route like so get 'controller/:id/action/:param' => 'Controller#action' How can I use link_to to create a link like <a href="/controller/12345/action/abcde"> ? So far I have gotten link_to 'Link text', {:action => 'action'} To give me <a href="/controller/12345/action"> but using link_to 'Link text', {:action => 'action', :param => 'abcde'} will give me <a href="/controller/12345/action?param=abcde"> 回答1: You can name your route: get 'controller/:id/action/:param' => 'Controller

问题 I've created a rake task in my application and now I want the task to be accesible for app users from a link on a menu, but I don't know how to invoke it from there. Something like this...? <%= link_to t('backup'), Rake::Task['backup'].invoke %> 回答1: You can't do it. Link_to can link to something static or controller action. So you need to create some action, where you can invoke your Rake Task. class MyTasksController < ApplicationController def rake_it Rake::Task['backup'].invoke end end <%

问题 I've read through the relevant Stack questions but still seem to be hitting a routing error with the following code: Routes.rb resources :memberships do put :toggleon put :toggleoff end Memberships_controller.rb def toggleon @membership = Membership.find(params[:id]) @membership.update_attributes(:active => true) if user.id == membership_id redirect_to root_path else redirect_to group end end def toggleoff @membership = Membership.find(params[:id]) @membership.update_attributes(:active =>