1 files changed, 38 insertions, 0 deletions
diff --git a/app/models/ml/model_version.rb b/app/models/ml/model_version.rb
new file mode 100644
index 00000000000..540fe6018a1
--- /dev/null
+++ b/app/models/ml/model_version.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module Ml
+  class ModelVersion < ApplicationRecord
+    validates :project, :model, presence: true
+
+    validates :version,
+      format: Gitlab::Regex.ml_model_version_regex,
+      uniqueness: { scope: [:project, :model_id] },
+      presence: true,
+      length: { maximum: 255 }
+
+    validate :valid_model?, :valid_package?
+
+    belongs_to :model, class_name: 'Ml::Model'
+    belongs_to :project
+    belongs_to :package, class_name: 'Packages::Package', optional: true
+
+    delegate :name, to: :model
+
+    private
+
+    def valid_model?
+      return unless model
+
+      errors.add(:model, 'model project must be the same') unless model.project_id == project_id
+    end
+
+    def valid_package?
+      return unless package
+
+      errors.add(:package, 'package must be ml_model') unless package.ml_model?
+      errors.add(:package, 'package name must be the same') unless package.name == name
+      errors.add(:package, 'package version must be the same') unless package.version == version
+      errors.add(:package, 'package project must be the same') unless package.project_id == project_id
+    end
+  end
+end