我遵循railscast 197,但我使用的是rails 3.1.3,jQuery和scaffold,没有任何精妙的东西:scaffold,一切正常,但我无法添加字段,在那一集中Ryan Bates提供了jQuery的代码,但是不适用于我,这是我的代码:
在javascript / application.js中>
function remove_fields(link) { $(link).prev("input[type=hidden]").val("1"); $(link).closest(".fields").hide(); } 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)); }
helper / application_helper.rb
module ApplicationHelper def link_to_remove_fields(name, f) f.hidden_field(:_destroy) + link_to_function(name, "remove_fields(this)") end def link_to_add_fields(name, f, association) new_object = f.object.class.reflect_on_association(association).klass.new fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder| render(association.to_s.singularize + "_fields", :f => builder) end link_to_function(name, h("add_fields(this, \"#{association}\", \"#{escape_javascript(fields)}\")")) end end
_ questions_fields.html.rb
<div class="fields"> <p> <%= f.label :content, "Pregunta" %> <%= link_to_remove_fields "remover", f%><br /> <%= f.text_area :content, :rows => 3 %><br /> </p> <p> <% f.fields_for :answers do |builder| %> <%= render 'answer_fields', :f => builder %> <% end %> </p> <p><%= link_to_add_fields "Agregar respuesta", f, :answers %></p> </div>
_ form.html.rb
<%= form_for @asurvey do |f| %>
<%= f.label :name, "Nombre de encuesta" %><br />
<%= f.text_field :name %>
</p>
<%= f.fields_for :questions do |builder| %>
<%= render 'question_fields', :f => builder %>
<% end %>
<p><%= link_to_add_fields "Agregar pregunta", f, :questions %>
<p><%= f.submit "Crear" %></p>
<% end %>
我遵循railscast 197,但我使用的是rails 3.1.3,jQuery和scaffold,没有任何精妙的东西:scaffold,一切正常,但我无法添加字段,在那一集中Ryan Bates提供了jQuery的代码,但是...
我找到了解决方案...在stackoverflow中,这是: