app-controlles-users-registrations_controller.rb

class Users::RegistrationsController < Devise::RegistrationsController
  before_action :configure_permitted_parameters

  # Handles editing when provider is facebook
  def update_resource(resource, params)
    if current_user.provider == "facebook"
      params.delete("current_password")
      resource.update_without_password(params)
    else
      resource.update_with_password(params)
    end
  end
end

app-views-devises-registrations-edit.html.erb

<...>

  <% if resource.provider != "facebook" %>
      <div class="form-group">
        <%= f.label :current_password, class: "col-lg-2 control-label" %>
        <i>(we need your current password to confirm your changes)</i>
        <div class="col-lg-10">
          <%= f.password_field :current_password, autocomplete: "off", class: 'form-control' %>
        </div>
      </div>

      <div class="form-group">
        <%= f.label :password, class: "col-lg-2 control-label" %>
        <i>(leave blank if you don't want to change it)</i>
        <div class="col-lg-10">
          <%= f.password_field :password, autocomplete: "off", class: 'form-control' %>
        </div>
      </div>
      <div class="form-group">
        <%= f.label :password_confirmation, class: "col-lg-2 control-label" %>
        <div class="col-lg-10">
          <%= f.password_field :password_confirmation, autocomplete: "off", class: 'form-control' %>
        </div>
      </div>
    <% end %>
    
<...>