Django CMS Placeholders API

openapi: 3.0.3
info:
  title: djangocms-rest Breadcrumbs Placeholders API
  description: Read-only REST/JSON API for Django CMS that enables decoupled frontend applications to consume CMS-managed content. Built on Django REST Framework with OpenAPI 3 schema generation via drf-spectacular. Supports multi-language, multi-site, draft/preview access, and is compatible with Redis/Memcached caching.
  version: 1.0.0
  contact:
    name: Django CMS Association
    email: info@django-cms.org
    url: https://www.django-cms.org/en/
  license:
    name: BSD 3-Clause
    url: https://github.com/django-cms/djangocms-rest/blob/main/LICENSE
  x-logo:
    url: https://www.django-cms.org/static/img/django-cms-logo.svg
servers:
- url: https://example.com/api
  description: Default server (customize per deployment)
tags:
- name: Placeholders
  description: Placeholder content with nested plugin data
paths:
  /{language}/placeholders/{content_type_id}/{object_id}/{slot}/:
    get:
      operationId: placeholder_detail_retrieve
      summary: Placeholder detail
      description: Retrieve the content of a placeholder by content type, object ID, and slot name. The response includes the nested plugin data as structured JSON. Add ?html=1 to also receive server-rendered HTML output.
      tags:
      - Placeholders
      parameters:
      - $ref: '#/components/parameters/language'
      - name: content_type_id
        in: path
        required: true
        description: Django content type ID for the placeholder's owner model
        schema:
          type: integer
      - name: object_id
        in: path
        required: true
        description: Primary key of the placeholder's owner object
        schema:
          type: integer
      - name: slot
        in: path
        required: true
        description: Slot name of the placeholder
        schema:
          type: string
      - $ref: '#/components/parameters/preview'
      - $ref: '#/components/parameters/html'
      responses:
        '200':
          description: Placeholder content
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Placeholder'
        '404':
          description: Placeholder not found
components:
  parameters:
    preview:
      name: preview
      in: query
      description: Set to 1 or true to include draft/unpublished content (requires appropriate permissions)
      schema:
        type: string
        enum:
        - '0'
        - '1'
        - 'true'
        - 'false'
    html:
      name: html
      in: query
      description: Set to 1 to include server-rendered HTML for placeholder content
      schema:
        type: string
        enum:
        - '0'
        - '1'
    language:
      name: language
      in: path
      required: true
      description: Language code (e.g. "en", "de", "fr")
      schema:
        type: string
        example: en
  schemas:
    Placeholder:
      type: object
      description: A placeholder containing structured plugin content
      properties:
        slot:
          type: string
          description: Template slot name for this placeholder
        label:
          type: string
          description: Human-readable label for the placeholder
        language:
          type: string
          description: Language code of the content
        content:
          type: array
          items:
            type: object
          description: Nested list of serialized plugin data objects. Each object has a "plugin_type" field identifying its type, plus plugin-specific properties.
        details:
          type: string
          format: uri
          description: API URL to retrieve this placeholder directly
        html:
          type: string
          default: ''
          description: Server-rendered HTML output (only present when ?html=1 is requested)
      required:
      - slot
      - label
      - language
      - details
externalDocs:
  description: djangocms-rest Documentation
  url: https://djangocms-rest.readthedocs.io/