将params从select_tag传递给控制器​​模型

Question

我在视图上有这个代码，

<%=form_tag( '/price_verifications', method: "get", class: 'panel-body') do %>
  <div class="form-group">
    <%=select_tag :location, options_from_collection_for_select(Location.active_towns, :id, :name), prompt: "Select Location", class: 'form-control select2' %>
  </div>

  <div class="form-group">
    <%=submit_tag "Filter", disable_with: 'Filtering...', class: 'btn btn-block btn-default' %>
  </div>
  <% end %>

当我选择其中一个位置并单击过滤器时，我想将选定的位置ID（例如44）传递给我的控制器：

def index 
   @missing_prices = Price.all_missing_prices(:id) 
end

我的模特：

   def self.all_missing_prices(id)
     missing_prices = Product.find_by_sql("
        SELECT * 
        FROM products
        WHERE status = 1
        AND id NOT IN (
          SELECT product_id
          FROM prices
          WHERE CAST(created_at as date) = CAST(curdate() as date)
          AND location_id = "+id.to_s+"
          )

      ")

  end

当我在控制器中硬编码44作为参数时，它就像魅力一样。

Answer 1

您可以访问控制器中的位置值，如下所示

for (var i = 1; i < 101; i++) {
    if(i % 3 == 0){
        $("#main").append("divisible by 3");
    }
    else{
         $("#main").append(i + '<br />');
    }
}