我有以下表单,用户从活动中心页面上的数据库条目列表中选择一个部门。我正在尝试显示部门字符串 ( :department
) 而不是部门 ID。我试过@activity_center.department.department
了,但这不起作用。有什么建议么?
形式:
<%= f.select :department_id, options_from_collection_for_select(@departments, 'id', 'department'), hide_label: true, :multiple => false %>
部门型号:
class Department < ActiveRecord::Base
validates :department, :presence => true
has_many :activity_centers
end
活动中心模型:
class ActivityCenter < ActiveRecord::Base
validates :activity_center, :presence => true
validates :department_id, :presence => true
belongs_to :departments
end
活动中心索引页面:
<% @activity_centers.each do |activity_center| %>
<tr>
<td><%= activity_center.activity_center %></td>
<td><%= activity_center.department.department %></td>
<td style="text-align:right;">
<%= link_to 'View Activity Center', activity_center_path(activity_center), class: "btn btn-success btn-xs" %>
<%= link_to 'Edit', edit_activity_center_path(activity_center), class: "btn btn-default btn-xs" %>
<%= link_to 'Delete', activity_center_path(activity_center), class: "btn btn-danger btn-xs",
method: :delete,
data: { confirm: 'Confirm you want to delete this activity_center.' } %></td>
</tr>
<% end %>