Rails delete multiple objects checkboxes with fields_for

Question

I have two models - Campaigns & Cities (belongs to Campaign). On the create and edit form for Campaign I'm using fields_for to allow users to edit cities directly on the campaign edit page. I want to add a checkbox for each city, so that their ids will be sent in an array (delete_cities) in the params.

My attempt at it:

<%= f.fields_for :cities do | city_form | %>
      <%= city_form.label :name %>
      <%= city_form.text_field :name%>
      <%= city_form.label :phone_number %>
      <%= city_form.text_field :phone_number %>
      <%= city_form.label :zip_code %>
      <%= city_form.text_field :zip_code %>
      <%= city_form.check_box :delete_cities %>
      </br>
    <% end %>

I cant solve this any help is appeciated.

try using check_box_tag 'delete_cities[]'

jvnill
– jvnill

2018-03-27 23:23:25 +00:00
Commented Mar 27, 2018 at 23:23 — jvnill
– jvnill, Commented Mar 27, 2018 at 23:23

fongfan999 · Accepted Answer · 2018-03-28 00:43:55Z

2

According to the docs:

:allow_destroy

If true, destroys any members from the attributes hash with a _destroy key and a value that evaluates to true (eg. 1, '1', true, or 'true'). This option is off by default.

In order to allow users to delete cities, you can do like this:

<%= city_form.check_box :_destroy %>

And don't forget to permit :_destroy in the controller:

params.require(:campaign).permit(cities_attributes: [:id, :_destroy])

answered Mar 28, 2018 at 0:43

fongfan999

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