[#2996] - Change boolean field to show dash when null (#2997)

* Change boolean field to show dash when null

* Update app/components/avo/fields/boolean_field/index_component.html.erb

* Update app/components/avo/fields/boolean_field/show_component.html.erb

---------

Co-authored-by: Paul Bob <69730720+Paul-Bob@users.noreply.github.com>

app/components/avo/fields/boolean_field/index_component.html.erb

@@ -1,3 +1,3 @@
-<%= index_field_wrapper **field_wrapper_args, dash_if_blank: false, flush: true do %>
+<%= index_field_wrapper **field_wrapper_args, flush: true do %>
   <%= render Avo::Fields::Common::BooleanCheckComponent.new checked: @field.value %>
 <% end %>

app/components/avo/fields/boolean_field/show_component.html.erb

@@ -1,3 +1,3 @@
-<%= field_wrapper **field_wrapper_args, dash_if_blank: false do %>
+<%= field_wrapper **field_wrapper_args do %>
   <%= render Avo::Fields::Common::BooleanCheckComponent.new checked: @field.value %>
 <% end %>

spec/system/avo/boolean_field_spec.rb

@@ -0,0 +1,17 @@
+require "rails_helper"
+
+RSpec.describe "BooleanField", type: :system do
+  describe "with regular input" do
+    let!(:post) { create :post, name: "My Post", is_featured: nil }
+
+    context "show" do
+      it "displays the post values" do
+        visit "/admin/resources/posts/#{post.id}"
+
+        expect(page).to have_text "IS FEATURED"
+
+        expect(find_field_value_element("is_featured")).to have_text empty_dash
+      end
+    end
+  end
+end