# KnowledgeBaseTopic

**Type:** GraphQL objects

**Description:**
A knowledge base topic — the top-level organizational unit.
Topics are associated with a brand and contain categories of articles.
They can be styled with custom colors and background images.

## Fields
- _id (String)
- code (String): Unique code identifier for programmatic access.
- title (String): The topic title.
- description (String): Description of the topic.
- categories (KnowledgeBaseCategory): Categories within this topic.
  - _id (String)
  - code (String): Unique code identifier for programmatic access.
  - title (String): The category title.
  - description (String): Description of what this category covers.
  - articles (KnowledgeBaseArticle): Articles in this category, optionally filtered by status.
  - icon (String): Icon identifier for the category.
  - createdBy (String): User ID of the category creator.
  - createdDate (Date): When this category was created.
  - modifiedBy (String): User ID of the last modifier.
  - modifiedDate (Date): When this category was last modified.
  - parentCategoryId (String): Parent category ID for nested categorization.
  - firstTopic (KnowledgeBaseTopic): The first topic this category belongs to.
  - authors (User): Users who have authored articles in this category.
  - numOfArticles (Float): Count of articles in this category, optionally filtered by status.
  - countArticles (Int): Total article count in this category.
- workspace (Workspace): undefined
  - _id (String)
  - name (String)
  - description (String)
  - code (String)
  - userId (String)
  - createdAt (Date)
  - memberIds (String)
- color (String)
- backgroundImage (String): URL of the background image for the topic page.
- languageCode (String): ISO language code for the topic content (e.g. 'en', 'ar').
- createdBy (String): User ID of the topic creator.
- createdDate (Date): When this topic was created.
- modifiedBy (String): User ID of the last modifier.
- modifiedDate (Date): When this topic was last modified.
- parentCategories (KnowledgeBaseParentCategory): Top-level parent categories within this topic.
  - _id (String)
  - code (String): Unique code identifier.
  - title (String): The category title.
  - description (String): Description of what this category covers.
  - articles (KnowledgeBaseArticle): Articles directly in this parent category.
  - icon (String): Icon identifier.
  - createdBy (String): User ID of the creator.
  - createdDate (Date): When this category was created.
  - modifiedBy (String): User ID of the last modifier.
  - modifiedDate (Date): When this category was last modified.
  - parentCategoryId (String): Parent category ID (for deeper nesting).
  - firstTopic (KnowledgeBaseTopic): The first topic this category belongs to.
  - authors (User): Users who have authored articles in this category.
  - numOfArticles (Float): Count of articles, optionally filtered by status.
  - childrens (KnowledgeBaseCategory): Nested child categories.