Question

我在Rails 3应用程序中遇到错误，我无法确定其来源......当我尝试销毁某个对象时，我得到以下内容：

NameError (uninitialized constant Outcome::OutcomeAnalyAsis): app/controllers/outcomes_controller.rb:141:in `destroy'
Rendered C:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.0ms)
Rendered C:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (15.6ms)
Rendered C:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (15.6ms)

这是我的破坏功能。错误是由于 @ outcome.destroy 。

的行

 def destroy
    @outcome = Outcome.find(params[:id])

    @outcome_tps = OutcomeTimepoint.where(:outcome_id => @outcome.id).all
    @outcome_subs = OutcomeSubgroup.where(:outcome_id => @outcome.id).all
    @outcome_columns = OutcomeColumn.where(:outcome_id => @outcome.id).all
    @outcome_column_vals = OutcomeColumnValue.where(:outcome_id => @outcome.id).all
    @outcome_results = OutcomeResult.where(:outcome_id => @outcome.id).all

    @outcome_tps.each {|i| i.destroy}
    @outcome_subs.each {|i| i.destroy}
    @outcome_columns.each {|i| i.destroy}
    @outcome_column_vals.each {|i| i.destroy}
    @outcome_results.each {|i| i.destroy}
    @outcome.destroy  #error happens on this line

    respond_to do |format|
        @outcomes = Outcome.find(:all, :conditions => {:study_id => session[:study_id]})
        @study_arms = Arm.find(:all, :conditions => {:study_id => session[:study_id]})    
        format.js {
          render :update do |page|
                page.replace_html 'outcomes_table', :partial => 'outcomes/table'
          end
        }
    end
  end

有一个OutcomeAnalysis课程，但我无法弄清楚它与结果的关系。我已经对项目目录中的所有文件进行了搜索，搜索“OutcomeAnalyAsis”和“analyasis”，区分大小写和非区分大小写。它出现的唯一地方是来自这些错误的日志文件。

我知道这可能是在我的项目代码中的某个地方，但是有没有人对可能导致这种情况或我应该看的地方有任何建议？我正在尝试销毁所选的@outcome对象。使用params [：id]正确设置了@outcome对象的id。

如果有帮助，我可以发布更多代码段。提前谢谢！

Answer 1

Dude看着你的代码似乎首先需要使用的是

has_many :outcome_tps, :dependent => :destroy
has_many :outcome_subs, :dependent => :destroy

等.... 一旦你这件事，那么让我们知道问题是什么。

它将删除您的这些代码行

@outcome_tps = OutcomeTimepoint.where(:outcome_id => @outcome.id).all
@outcome_subs = OutcomeSubgroup.where(:outcome_id => @outcome.id).all
@outcome_columns = OutcomeColumn.where(:outcome_id => @outcome.id).all
@outcome_column_vals = OutcomeColumnValue.where(:outcome_id => @outcome.id).all
@outcome_results = OutcomeResult.where(:outcome_id => @outcome.id).all

@outcome_tps.each {|i| i.destroy}
@outcome_subs.each {|i| i.destroy}
@outcome_columns.each {|i| i.destroy}
@outcome_column_vals.each {|i| i.destroy}
@outcome_results.each {|i| i.destroy}

rails 3 uninitialized constant NameError在销毁对象时

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