railscast 197如何：函數add_fields

Question

我遵循railscast 197，但我使用rails 3.1.3，jquery和腳手架，沒有漂亮：腳手架，一切工作正常，但我不能添加字段，在該集中瑞安貝茨給代碼爲jquery，但不是爲我工作，這是我的代碼...先謝謝了。

在 的javascript

/的application.js

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)); 
} 

助手/ 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 %> 

Answer 1

我找到了解決辦法...在這裏計算器是這樣的：

link_to_function(name, h("add_fields(this, \"#{association}\", \"#escape_javascript(fields)}\")")) 

我的前：

link_to_function(name, ("add_fields(this, #{association}', #{escape_javascript(fields)}')")) 

當然

驗證碼在助手/ application_helper.rb

是的，那我秒。現在它可以工作。謝謝。