Rails - Nested Forms - Get a attribute from another model - ruby-on-rails

Question

I'm new to Rails so maybe this is a stupid question. I'm struggling to get a attribute from another model in a nested form. Let me explain:
I have 3 models linked each other. Poi -> PoiDescription <- DescriptionType
One Poi can have multiple descriptions and a description have only one description type. I'm creating the PoiDescriptions inside the Poi form with a nested form. Every thing is working well, but now, inside the fields_for I want a label before the textarea with the name of the description type. But I don't know how to get it...I can't do something like 'p.description_type.name' so how can I get that attribute?
Here is my code:
Poi Controller
def new
#poi = Poi.new
#descriptions = DescriptionType.all
#descriptions.each do |d|
#poi.poi_descriptions.new(description_type_id: d.id)
end
end
Poi form
<%= form_with model: #poi do |f| %>
...
<div class="col-md-12">
<%= f.fields_for :poi_descriptions do |p| %>
<%= p.hidden_field :description_type_id %>
<%= p.text_area :description %>
<% end %>
</div>
...
Schema
create_table "description_types", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "poi_descriptions", force: :cascade do |t|
t.text "description"
t.bigint "poi_id"
t.bigint "description_type_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.index ["description_type_id"], name: "index_poi_descriptions_on_description_type_id"
t.index ["poi_id"], name: "index_poi_descriptions_on_poi_id"
end
create_table "pois", id: :serial, force: :cascade do |t|
t.text "name"
t.float "longitude"
t.float "latitude"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "monument_id"
t.integer "beacon_id"
t.string "image_file_name"
t.string "image_content_type"
t.integer "image_file_size"
t.datetime "image_updated_at"
t.index ["beacon_id"], name: "index_pois_on_beacon_id"
t.index ["monument_id"], name: "index_pois_on_monument_id"
end
Hope you can help me! Thanks in advance.

Answer 1

To get from the form_builder_object to the actual object you can do p.object.description_type.name
If you just want that as a title and not as an input field you can either:
Add it in a p or span tag and make it look like a label with css or
Add a label_tag with a custom name and title as you need. https://apidock.com/rails/ActionView/Helpers/FormTagHelper/label_tag