issue-218: create assertion model

app/models/assertion.rb

@@ -0,0 +1,18 @@
+# Copyright (c) Universidade Federal Fluminense (UFF).
+# This file is part of SAPOS. Please, consult the license terms in the LICENSE file.
+
+# frozen_string_literal: true
+
+class Assertion < ApplicationRecord
+  has_paper_trail
+
+  attr_accessor :args
+  belongs_to :query, inverse_of: :assertions, optional: false
+
+  validates :name, presence: true
+  validates :assertion_template, presence: true, on: :update
+
+  def to_label
+    "#{self.name}"
+  end
+end

app/models/query.rb

@@ -6,6 +6,7 @@
 # Represents a Query
 class Query < ApplicationRecord
   has_many :notifications, inverse_of: :query
+  has_many :assertions, inverse_of: :query
   has_many :params,
     class_name: "QueryParam",
     dependent: :destroy, validate: false,

db/migrate/20241209223140_create_assertions.rb

@@ -0,0 +1,9 @@
+class CreateAssertions < ActiveRecord::Migration[7.0]
+  def change
+    create_table :assertions do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20241209223141_add_query_id_to_assertions.rb

@@ -0,0 +1,5 @@
+class AddQueryIdToAssertions < ActiveRecord::Migration[7.0]
+  def change
+    add_reference :assertions, :query, null: true, foreign_key: true
+  end
+end

db/migrate/20241209223142_populate_query_id_in_assertions.rb

@@ -0,0 +1,10 @@
+class PopulateQueryIdInAssertions < ActiveRecord::Migration[7.0]
+  def up
+    default_query = Query.first
+    Assertion.update_all(query_id: default_query.id) if default_query
+  end
+
+  def down
+    # No need to revert data changes
+  end
+end

db/migrate/20241209223143_change_query_id_in_assertions.rb

@@ -0,0 +1,5 @@
+class ChangeQueryIdInAssertions < ActiveRecord::Migration[7.0]
+  def change
+    change_column_null :assertions, :query_id, false
+  end
+end