feat: comment to test run's case (#390)

backend/models/comments.js

@@ -0,0 +1,47 @@
+function defineComment(sequelize, DataTypes) {
+  const Comment = sequelize.define('Comment', {
+    commentableType: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+    commentableId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    userId: {
+      type: DataTypes.INTEGER,
+      allowNull: true,
+    },
+    content: {
+      type: DataTypes.TEXT,
+      allowNull: false,
+    },
+  });
+
+  Comment.associate = (models) => {
+    // Polymorphic associations
+    Comment.belongsTo(models.RunCase, {
+      foreignKey: 'commentableId',
+      constraints: false,
+      as: 'runCase',
+    });
+    Comment.belongsTo(models.Run, {
+      foreignKey: 'commentableId',
+      constraints: false,
+      as: 'run',
+    });
+    Comment.belongsTo(models.Case, {
+      foreignKey: 'commentableId',
+      constraints: false,
+      as: 'case',
+    });
+    Comment.belongsTo(models.User, {
+      foreignKey: 'userId',
+      onDelete: 'SET NULL',
+    });
+  };
+
+  return Comment;
+}
+
+export default defineComment;

backend/models/runCases.js

@@ -23,6 +23,10 @@ function defineRunCase(sequelize, DataTypes) {
       foreignKey: 'caseId',
       onDelete: 'CASCADE',
     });
+    RunCase.hasMany(models.Comment, {
+      foreignKey: 'commentableId',
+      onDelete: 'CASCADE',
+    });
   };
 
   return RunCase;