I have a Profile model, that accepts_nested_attributes_for :grades.
My Grade model looks like this:
# == Schema Information # # Table name: grades # # id :integer not null, primary key # subject :string # result :string # grade_type :integer # profile_id :integer # created_at :datetime not null # updated_at :datetime not null class Grade < ActiveRecord::Base belongs_to :profile enum grade_type: { csec: 0, cape: 1, sat: 2, g7: 3, g8: 4, g9: 5, g10: 6, g11: 7, g12: 8, g13: 9 } end In my profiles/_form.html.erb, I have the following:
<%= simple_form_for @profile, html: { class: "form-horizontal" } do |f| %> <%= f.simple_fields_for :grades, html: { class: "form-inline" } do |g| %> <%= g.input_field :grade_type, collection: Grade.grade_types.keys, include_blank: false, class: 'col-lg-8 form-control' %> <% end %> <% end %> So, that shows me the grade_types from the enum values like I would expect.
But what I want to happen is, when I am editing a record, and it shows the grades, it should have the grade_type pre-selected.
How do I do that?
3 Answers
Answers 1
simple_form has a nifty option to preselect a value. You could either use the :selected option for this as such:
<%= f.input_field :grade_type, collection: Grade.grade_types.keys, include_blank: false, class: 'col-lg-8 form-control', selected: @grade[:grade_type] %> I'm not really sure of doing the same for nested attributes though, but sure seems like something I'd love to learn
Answers 2
Get the grade_type from the grade object g.object and pass it to the input field via selected:
<%= f.input_field :grade_type, collection: Grade.grade_types.keys, selected: g.object.grade_type, include_blank: false, class: 'col-lg-8 form-control' %> Answers 3
The enum_help gem lets you do this:
<%= f.input :grade_type %> 
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