问题
I am trying to select specific record but when trying to save , employee_id is saved with a null value, and without putting any condition it works normally , is there any way to solve this ?
<%= f.association :employee , collection:
Employee.where('student_advisor' => true).map(&:full_name) %>
回答1:
This is what works for me:
<%= f.association :employee, :collection => Employee.where('student_advisor' => true), :label_method => :full_name, :value_method => :id %>
Though IMHO its better to set that query in your controller to keep the logic out of your views...
So in the controller:
@employee_list = Employee.where('student_advisor' => true)
And in the view:
<%= f.association :employee, :collection => @employee_list, :label_method => :full_name, :value_method => :id %>
来源：https://stackoverflow.com/questions/19262954/specify-values-in-simple-form-association