Select2 initSelection已弃用

Question

I am now creating a Rails project and I am using select2 for the form.

form_for in View:

  <%= f.fields_for :ingredients do |ingredient_fields|%>
     Ingredients: <%= ingredient_fields.select(:name, @ingredients,
     {}, multiple: true)%>
   <% end %>

javascript file:

$('#cuisine_ingredients_name').select2();

I set @ingredients in the controller and this is working as it should be, but I don't know how to set the multiple default values for this select2 form.

It seems like initSelection method is deprecated in version 4.0.0 , and I couldn't find a good example using a new method.

Does anyone have an idea? Thank you in advance.

Answer 1

Okay, after working on this for a while, I figured it out myself.

  <%= f.fields_for :ingredients do |ingredient_fields|%>
 Ingredients: <%= ingredient_fields.select(:name, @ingredients,
 {selected: @selected_ingredients}, multiple: true)%>

Adding a selected option to select worked for me, as Kevin suggested (Thank you!).

In this example, @selected_ingredients is defined in edit method in cuisines_controller.

Thank you all for your help!