ruby-on-rails-3 - Rails 3 - 搜查 - check_box_tag

Question

Listing Model - belongs_to :area

Area Model - has_many :listings

我正在尝试使用带有复选框的 Ransack 来实现搜索；用户选中选定区域的地方，搜索返回选定区域的所有列表。

<%= search_form_for @search do |f| %>
<% areas = Area.all %>
    <% areas.each do |area| %>
        <%= check_box_tag('q[area_id_eq][]', area.id) %>
        <%= area.location%>
    <% end%>
<%= f.submit "SEARCH" %>
<% end %>

控制台输出:

Parameters: {"utf8"=>"✓", "q"=>{"area_id_eq"=>["1", "2"]}, "commit"=>"SEARCH"}
Completed 500 Internal Server Error in 4ms

NoMethodError - undefined method `to_i' for ["1", "2"]:Array:

只是不确定如何实现它以接受多个复选框值。

Answer 1

不要使用“area_id_eq”，而是使用“area_id_any”。您还需要检查以确保选择了参数:

<%= search_form_for @search do |f| %>
<% areas = Area.all %>
    <% areas.each do |area| %>
        <%= check_box_tag('q[area_id_eq_any][]', area.id,  (params[:q][area_id_eq_any].include? area.id.to_s) ? true : false ) %>
        <%= area.location%>
    <% end%>
<%= f.submit "SEARCH" %>
<% end %>