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enumsruby-on-rails-5nested-forms

Is there a new method to call enums on Rails 5.2?

I built an app with enums and all works perfectly. However, on a different app where I have nested forms I'm having a small problem. Even though everything seems to work fine in the backend, on my view does not shows the result and says that I have an undefined method

Do anyone has the same problem or is just me??

My Schema:

create_table "estimate_variants", force: :cascade do |t|
    t.integer "unit", default: 0
    t.bigint "estimate_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["estimate_id"], name: "index_estimate_variants_on_estimate_id"
end

My main model

class Estimate < ApplicationRecord
    has_many :estimate_variants
    accepts_nested_attributes_for :estimate_variants
end

My nested model

class EstimateVariant < ApplicationRecord
    enum unit: { SF: 0, LF: 1 }
    belongs_to :estimate
end

My view

<%= form.fields_for :estimate_variants do |builder| %>
<div class="field col s12">
    <%= builder.label :unit, 'Unit' %>
    <%= form.select(unit: EstimateVariant.units.keys) %>
</div>

And the error I get is this: enter image description here

Can someone please guide me a bit into this so I can fix it??

Solution

  • UPDATED

    I think the problem is the select helper in your view, try with:

     <%= builder.select(:unit, EstimateVariant.units.keys) %>

    I made an example to test and work for me, and the enums in the models also work defining only the keys, and the values increase in an ascending way.

    You can define:

    enum unit: { sf: 0, lf: 1 }

or

enum unit: [:sf, lf]
enum unit: %i[sf lf]