Working on an internal application and I have a Polymorphic association called Roles…
What I am trying to do is associate a user to different models with a role associated…
I have it “partially” working, however when I do an update it fails as one of the records in the params exists already and I don’t allow duplicates…
For an example, I have is a User Model, a LEA Model, a RoleType Model, and a Role Model that is polymorphic…
Here is my Role model:
class CreateRoles < ActiveRecord::Migration[6.0]
def change
create_table :roles do |t|
t.references :user
t.references :role_type
t.references :roleable, polymorphic: true, null: false
t.index [:user_id, :roleable_type, :roleable_id], unique: true
t.timestamps
end
end
end
So what I am doing in the User Controller is this on an Edit (straight build on a new)
def edit
n = RoleType.find_by_name('None')
@leas.where("leas.id NOT IN (?)", @user.roles.pluck('roles.roleable_id')).each do |lea|
@user.roles.build(roleable_id: lea.id, role_type_id: n.id, roleable_type: 'Lea')
end
end
And the role part in my form is like this:
<%= f.fields_for :roles do |e| %>
<li>
<%= e.hidden_field :roleable_type, value: 'Lea' %>
<%= e.collection_select :roleable_id, @leas.order(:name), :id, :name, class: 'form-control' %>
<%= e.collection_select :role_type_id, RoleType.order(:name), :id, :name, class: 'form-control' %>
</li>
<% end %>
I know this will be confusing so please ask questions… I am not sure what to explain for your assistance…
What I would “like” to do is include all of the target records in the selection and default to None on the role if not changed…
Is there a better way to do this?
John
