Refactor multiple models to remove foreign key references while maintaining required fields, enhancing data integrity and simplifying model definitions.

backend/models/community/folder.js

@@ -8,16 +8,12 @@ const Folder = sequelize.define('folder', {
         allowNull: false},
     parentId: {
         type: DataTypes.INTEGER,
-        allowNull: true,
-        references: {
-            model: 'folder',
-            key: 'id'}},
+        allowNull: true
+    },
     userId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'user',
-            key: 'id'}}}, {
+        allowNull: false
+    }}, {
     tableName: 'folder',
     schema: 'community',
     underscored: true,

backend/models/community/folder_image_visibility.js

@@ -10,22 +10,11 @@ const FolderImageVisibility = sequelize.define('folder_image_visibility', {
     },
     folderId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'folder',
-            key: 'id'
-        }
+        allowNull: false
     },
     visibilityTypeId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: {
-                schema: 'type', 
-                tableName: 'image_visibility_type'
-            },
-            key: 'id'
-        }
+        allowNull: false
     }
 }, {
     tableName: 'folder_image_visibility',

backend/models/community/folder_visibility_user.js

@@ -10,19 +10,11 @@ const FolderVisibilityUser = sequelize.define('folder_visibility_user', {
     },
     folderId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'folder',
-            key: 'id'
-        }
+        allowNull: false
     },
     visibilityUserId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'image_visibility_user',
-            key: 'id'
-        }
+        allowNull: false
     }
 }, {
     tableName: 'folder_visibility_user',

backend/models/community/guestbook.js

@@ -10,19 +10,11 @@ const GuestbookEntry = sequelize.define('guestbook_entry', {
         allowNull: false},
     recipientId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: User, 
-            key: 'id'
-        }
+        allowNull: false
     },
     senderId: {
         type: DataTypes.INTEGER,
-        allowNull: true, 
-        references: {
-            model: User, 
-            key: 'id'
-        }
+        allowNull: true
     },
     senderUsername: {
         type: DataTypes.STRING,

backend/models/community/image.js

@@ -18,16 +18,12 @@ const Image = sequelize.define('image', {
         unique: true},
     folderId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'folder',
-            key: 'id'}},
+        allowNull: false
+    },
     userId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'user',
-            key: 'id'}}}, {
+        allowNull: false
+    }}, {
     tableName: 'image',
     schema: 'community',
     underscored: true,

backend/models/community/image_image_visibility.js

@@ -10,22 +10,11 @@ const ImageImageVisibility = sequelize.define('image_image_visibility', {
     },
     imageId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: 'image', 
-            key: 'id'
-        }
+        allowNull: false
     },
     visibilityTypeId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: {
-                schema: 'type',
-                tableName: 'image_visibility_type'
-            },
-            key: 'id'
-        }
+        allowNull: false
     }
 }, {
     tableName: 'image_image_visibility',

backend/models/community/user_param.js

@@ -7,19 +7,11 @@ import { encrypt, decrypt } from '../../utils/encryption.js';
 const UserParam = sequelize.define('user_param', {
     userId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: User,
-            key: 'id',
-        },
+        allowNull: false
     },
     paramTypeId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: UserParamType,
-            key: 'id',
-        },
+        allowNull: false
     },
     value: {
         type: DataTypes.STRING,

backend/models/community/user_right.js

@@ -6,19 +6,11 @@ import UserRightType from '../type/user_right.js';
 const UserRight = sequelize.define('user_right', {
     userId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: User,
-            key: 'id'
-        }
+        allowNull: false
     },
     rightTypeId: {
         type: DataTypes.INTEGER,
-        allowNull: false,
-        references: {
-            model: UserRightType,
-            key: 'id'
-        }
+        allowNull: false
     }}, {
     tableName: 'user_right',
     schema: 'community',