我试图让一个元素索引视图显示关联的项目名称(来自 db 项目的字段)和来自 has_many_through 的实验类型(来自 db 实验的字段),并且属于/具有许多关联模型
模型元素.rb
class Element < ActiveRecord::Base
has_many :project_elements
has_many :projects, :through => :project_elements
has_many :experiments
attr_accessible :project_ids, :experiment_ids
模型项目.rb
class Project < ActiveRecord::Base
has_many :project_elements
has_many :elements, :through => :project_elements
attr_accessible :projectname, :element_ids
模型 project_element.rb
class ProjectElement < ActiveRecord::Base
belongs_to :project
belongs_to :element
attr_accessible :project_id, :element_id
模型实验.rb
class Experiment < ActiveRecord::Base
belongs_to :element
has_many :welldish_experiments
has_many :welldishs, :through => :welldish_experiments
attr_accessible :exptype, :element_id
元素控制器.rb
def index
@elements = Element.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: @elements }
end
/elements/index.html.erb
<% @elements.each do |element| %>
<tr>
<td><%= element.experiments %></td>
<td><%= element.projects %></td>
当我这样做时,它向我展示了整个相关的项目对象......对于实验来说也是如此,我无法弄清楚如何将显示限制为一个属性?
或者,因为数据是使用formtastic生成的:
元素/_form.html.erb
<%= semantic_form_for @element do |f| %>
<%= f.inputs do %>
<%= f.input :projects, :label => "projet associé", :required => true%>
<%= f.input :experiments, :label => "type d'experience",
:as => :radio, :collection => Experiment.all, :required => true %>
<% end %>
<%= f.actions :submit, :cancel %>
<% end %>
我想知道是否有一种快速的方法可以从那里生成索引视图(可能带有一些渲染“表单”选项?)任何帮助将不胜感激......