NameError在TodoConroller＃添加

Question

應用程序/控制器/ todos_controller.rb

def add 
    todo = Todo.create(:todo_item => params[:todo_text]) 
    if !todo.valid? 
     flash[:error] = todo.errors.full_messages.join("<br>").html_safe 
    end 
    redirect_to :action => 'index' 
end 

錯誤消息：

NameError在TodosController＃添加未定義局部變量或方法 'TODO' 的＃

如何解決這些公關oblem？

Answer 1

試試這個：

def add 
    todo = Todo.create(:todo_item => params[:todo_text]) 
    if todo && !todo.valid? 
    flash[:error] = todo.errors.full_messages.join("").html_safe 
    end 
    redirect_to :action => 'index' 
end