Ruby on rails Rails搜索-传递参数，不传递和#x27；t返回结果（错误）

我正在尝试在我的Rails应用程序上使用简单搜索。我只有两个选择器可供选择：（a）种类和（b）位置id。表单显示，值可选，参数在url中传递。然而，当我提交时，即使有匹配的内容，也不会显示任何内容。我签入了我的活动管理员，那里有匹配搜索参数的地方

这是我的places\u controller.rb

def index
   @places = Place.search(params[:kind],[:location_id])
end

def self.search(kind, location_id)
  return scoped unless kind.present? || location_id.present?
  where(['kind = ? AND location_id = ?', kind, location_id])
end

<%= form_tag places_path, :method => 'get' do %>
    <form class="form-inline text-center" role="form" action="/places">
        <div class="form-group">
           <%= label_tag :kind %>
           <%= select_tag :kind, options_for_select([['beer','0'],['chocolate','1'],['cocktail','2'], ['coffee','3'], ['tea','4'], ['wine','5'], ['juice','6']]), class: "form-control" %>
         /div>
 <br>
         <div class="form-group">
            <%= label_tag :location_id %><br>
            <%= select_tag :location_id, options_for_select([['Houston','0'],['San Francisco','1'],['Santiago','2'], ['Valparaiso','3'], ['Rio de Janeiro','4'], ['Milan','5'], ['Palo Alto','6'], ['Las Vegas','7'], ['New York','8'], ['San Diego','9']]), class: "form-control" %>
          </div>
 <br>
 <br>
          <div class="actions">
          <span itemprop="significantLink">
          <%= submit_tag 'Search', :name => nil, class: "btn btn-default" %>
          </span>
          </div>
 </form>
 <% end %>

我的位置。rb

def index
   @places = Place.search(params[:kind],[:location_id])
end

def self.search(kind, location_id)
  return scoped unless kind.present? || location_id.present?
  where(['kind = ? AND location_id = ?', kind, location_id])
end

<%= form_tag places_path, :method => 'get' do %>
    <form class="form-inline text-center" role="form" action="/places">
        <div class="form-group">
           <%= label_tag :kind %>
           <%= select_tag :kind, options_for_select([['beer','0'],['chocolate','1'],['cocktail','2'], ['coffee','3'], ['tea','4'], ['wine','5'], ['juice','6']]), class: "form-control" %>
         /div>
 <br>
         <div class="form-group">
            <%= label_tag :location_id %><br>
            <%= select_tag :location_id, options_for_select([['Houston','0'],['San Francisco','1'],['Santiago','2'], ['Valparaiso','3'], ['Rio de Janeiro','4'], ['Milan','5'], ['Palo Alto','6'], ['Las Vegas','7'], ['New York','8'], ['San Diego','9']]), class: "form-control" %>
          </div>
 <br>
 <br>
          <div class="actions">
          <span itemprop="significantLink">
          <%= submit_tag 'Search', :name => nil, class: "btn btn-default" %>
          </span>
          </div>
 </form>
 <% end %>

和我的搜索表单\u home.html.erb

def index
   @places = Place.search(params[:kind],[:location_id])
end

def self.search(kind, location_id)
  return scoped unless kind.present? || location_id.present?
  where(['kind = ? AND location_id = ?', kind, location_id])
end

<%= form_tag places_path, :method => 'get' do %>
    <form class="form-inline text-center" role="form" action="/places">
        <div class="form-group">
           <%= label_tag :kind %>
           <%= select_tag :kind, options_for_select([['beer','0'],['chocolate','1'],['cocktail','2'], ['coffee','3'], ['tea','4'], ['wine','5'], ['juice','6']]), class: "form-control" %>
         /div>
 <br>
         <div class="form-group">
            <%= label_tag :location_id %><br>
            <%= select_tag :location_id, options_for_select([['Houston','0'],['San Francisco','1'],['Santiago','2'], ['Valparaiso','3'], ['Rio de Janeiro','4'], ['Milan','5'], ['Palo Alto','6'], ['Las Vegas','7'], ['New York','8'], ['San Diego','9']]), class: "form-control" %>
          </div>
 <br>
 <br>
          <div class="actions">
          <span itemprop="significantLink">
          <%= submit_tag 'Search', :name => nil, class: "btn btn-default" %>
          </span>
          </div>
 </form>
 <% end %>

“get”do%>
/div>








无，类别：“btn btn默认值”%>

---

非常感谢您的帮助！环顾了一大群SO/铁路工人，不知道该怎么办

首先，我觉得有些不对劲。将索引定义为：

def index
   @places = Place.search(params[:kind], params[:location_id])
end

此外，您可能希望实际使用respond_块来协商响应应该是什么，例如html或json

respond_to do |format|
  format.html { YOUR STUFF HERE }
  format.json { YOUR STUFF HERE }
end

---

我最好的建议是在@places赋值之后放一个

debugger

语句，这样您就可以实际调试正在发生的事情，并查看正在发生的事情

在您的代码中，您在哪里使用设置为搜索结果的

@places

变量？在my index.html.erb/places中，谢谢！成功了！你是说像这样的事吗？我对编码很陌生，所以有点困惑。def index@places=Place.search（params[：kind]，params[：location_id]）respond_to do | format | if@Place.search format.html{redirect_to@places}format.json{redirect_to@places}else format.html{redirect_to@places.all}format.json{redirect_to@places.all}我首先在@后面加上空格。读取从视图传递的参数时，需要始终使用params[：VALUE]。值总是作为散列从表单传递回控制器。不管它是GET、POST、PUT、Form还是Querystring。