Entities are one of the most important concepts in Drupal. If you truly understand entities, you unlock how Drupal stores data, displays content, powers Views, works with forms, and integrates with APIs.
This article explains what entities are, why they exist, and how they are used, using real-world scenarios.
We’ll keep the language simple, practical, and scenario-driven.
1. What Is an Entity in Drupal?
In simple terms:
An entity is a structured piece of data that Drupal knows how to store, load, display, and manage.
Entities are Drupal’s data model.
Examples of entities:
- Nodes (content)
- Users
- Taxonomy terms
- Media
- Files
- Custom entities
If something can be:
- Stored in the database
- Edited via a form
- Displayed on a page
- Listed in Views
…it is almost always an entity.
2. Real-World Analogy (Non-Technical)
Think of Drupal as a company filing system.
- An entity type is a file cabinet (Travel Packages, Events, Recipes)
- An entity is a single folder inside the cabinet
- Fields are documents inside the folder
Drupal does not care what the data is about. It only cares that the data is structured and consistent.
3. Entity Types vs Entity Instances
This distinction is critical.
Entity Type
Defines the structure and behavior.
Examples:
- Node
- User
- Taxonomy term
- Media
Entity Instance
A single record of that type.
Example:
- Node ID 25 ("Trip to Japan")
- User ID 3 ("editor@example.com")
Entity type = blueprint
Entity instance = actual data
4. Scenario 1 – Travel Company Website
Imagine a travel company website.
You might have:
Content Types (Node Entities)
- Travel Package
- Destination Guide
- Blog Article
Each Travel Package entity might have fields like:
- Title
- Description
- Price
- Duration
- Country
- Image
Drupal stores each package as a node entity.
Why this matters:
- Site builders create the structure
- Editors add content
- Developers extend behavior
- Frontend devs control display
All without changing the data model.
5. Scenario 2 – Event Hosting Platform
For an event-hosting site:
Entities could include:
- Event (node)
- Speaker (custom entity)
- Location (taxonomy)
- Attendee (user)
Each event entity may:
- Appear in Views
- Be exposed via JSON:API
- Have access control rules
- Be rendered differently per page
Entities allow reuse without duplication.
6. Scenario 3 – Recipe Website
For a recipe site:
Entity types:
- Recipe (node)
- Ingredient (taxonomy)
- Author (user)
Recipe entity fields:
- Title
- Ingredients
- Steps
- Prep time
- Difficulty
Same entity. Multiple displays:
- Full recipe page
- Card view
- API response
- Search results
Entities make this possible.
7. Content Entities vs Configuration Entities
Drupal has two main entity categories.
Content Entities
Store site content.
Examples:
- Nodes
- Users
- Media
- Comments
Stored in the database and change frequently.
Configuration Entities
Store site configuration.
Examples:
- Content types
- Views
- Image styles
- Roles
Stored in configuration (YAML) and deployed across environments.
This separation enables safe deployments and content stability.
8. Fields – Why Entities Are Powerful
Entities are powerful because of fields.
Fields:
- Are reusable
- Can be attached to multiple entity types
- Have widgets (forms)
- Have formatters (display)
A "Location" field can be used by:
- Events
- Travel packages
- Blog posts
One field, many uses.
9. Entities and Views (Very Important)
Views works almost entirely on entities.
When you build a View:
- You are querying entities
- Filtering by fields
- Sorting by properties
- Rendering via display modes
If you understand entities, Views becomes easy.
10. Entities for Developers (Backend)
Developers interact with entities via the Entity API.
Example:
$node = \Drupal::entityTypeManager()
->getStorage('node')
->load(1);
Entities provide:
- CRUD operations
- Access control
- Validation
- Translations
- Revisions
This is why Drupal scales well.
11. Entities for Frontend Developers
Frontend developers do not create entities, but they rely on them.
Entities provide:
- Predictable data
- Display modes
- Field-level theming
- Twig variables
Clean entity design = clean theming.
12. Entities and APIs
Entities power Drupal APIs:
- JSON:API
- REST
- GraphQL
If data is an entity, it can be:
- Exposed
- Filtered
- Secured
- Integrated
This is why Drupal is strong for enterprise integrations.
Simple Mental Model
Entity Type
→ Entity Instance
→ Fields
→ Display Modes
→ Twig / API
If you can picture this, entities will always make sense.
Why Entities Matter
Understanding entities helps you:
- Design better content models
- Avoid bad data structures
- Build scalable systems
- Work confidently with Views and APIs
- Communicate clearly with teams
Entities are the backbone of Drupal.
Quick Summary
- Entities are structured data in Drupal
- Nodes, users, taxonomy, and media are entities
- Fields make entities flexible
- Content vs configuration entities serve different purposes
- Entities power Views, forms, theming, and APIs