1 files changed, 50 insertions, 0 deletions
diff --git a/app/models/concerns/exportable.rb b/app/models/concerns/exportable.rb
new file mode 100644
index 00000000000..066a44912be
--- /dev/null
+++ b/app/models/concerns/exportable.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module Exportable
+  extend ActiveSupport::Concern
+
+  def readable_records(association, current_user: nil)
+    association_records = try(association)
+    return unless association_records.present?
+
+    if has_many_association?(association)
+      DeclarativePolicy.user_scope do
+        association_records.select { |record| readable_record?(record, current_user) }
+      end
+    else
+      readable_record?(association_records, current_user) ? association_records : nil
+    end
+  end
+
+  def exportable_association?(association, current_user: nil)
+    return false unless respond_to?(association)
+    return true if has_many_association?(association)
+
+    readable = try(association)
+    return true if readable.nil?
+
+    readable_record?(readable, current_user)
+  end
+
+  def restricted_associations(keys)
+    exportable_restricted_associations & keys
+  end
+
+  def has_many_association?(association_name)
+    self.class.reflect_on_association(association_name)&.macro == :has_many
+  end
+
+  private
+
+  def exportable_restricted_associations
+    []
+  end
+
+  def readable_record?(record, user)
+    if record.respond_to?(:exportable_record?)
+      record.exportable_record?(user)
+    else
+      record.readable_by?(user)
+    end
+  end
+end