# /api/v3/activities/{id}
---
get:
  parameters:
  - description: Activity id
    example: '1'
    in: path
    name: id
    required: true
    schema:
      type: integer
  responses:
    '200':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _links:
                  self:
                    href: "/api/v3/activity/1"
                    title: Priority changed from High to Low
                  user:
                    href: "/api/v3/users/1"
                    title: John Sheppard - admin
                  workPackage:
                    href: "/api/v3/work_packages/1"
                    title: quis numquam qui voluptatum quia praesentium blanditiis
                      nisi
                _type: Activity::Comment
                comment:
                  format: markdown
                  html: "<p>Lorem ipsum dolor sit amet.</p>"
                  raw: Lorem ipsum dolor sit amet.
                createdAt: '2014-05-21T08:51:20Z'
                details:
                - format: markdown
                  html: "<p>Lorem ipsum dolor sit amet.</p>"
                  raw: Lorem ipsum dolor sit amet.
                id: 1
                version: 31
          schema:
            "$ref": "../components/schemas/activity_model.yml"
      description: OK
      headers: {}
  tags:
  - Activities
  description: ''
  operationId: View_activity
  summary: View activity
patch:
  parameters:
  - description: Activity id
    example: '1'
    in: path
    name: id
    required: true
    schema:
      type: integer
  responses:
    '200':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _links:
                  self:
                    href: "/api/v3/activity/1"
                    title: Priority changed from High to Low
                  user:
                    href: "/api/v3/users/1"
                    title: John Sheppard - admin
                  workPackage:
                    href: "/api/v3/work_packages/1"
                    title: quis numquam qui voluptatum quia praesentium blanditiis
                      nisi
                _type: Activity::Comment
                comment:
                  format: markdown
                  html: "<p>Lorem ipsum dolor sit amet.</p>"
                  raw: Lorem ipsum dolor sit amet.
                createdAt: '2014-05-21T08:51:20Z'
                details:
                - format: markdown
                  html: "<p>Lorem ipsum dolor sit amet.</p>"
                  raw: Lorem ipsum dolor sit amet.
                id: 1
                version: 31
          schema:
            "$ref": "../components/schemas/activity_model.yml"
      description: OK
      headers: {}
    '400':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:InvalidRequestBody
                message: The request body was not a single JSON object.
      description: Occurs when the client did not send a valid JSON object in the
        request body.
      headers: {}
    '403':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                message: You are not allowed to edit the comment of this journal entry.
      description: |-
        Returned if the client does not have sufficient permissions.

        **Required permission:** edit journals
      headers: {}
    '422':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:PropertyIsReadOnly
                message: The ID of an activity can't be changed.
      description: Returned if the client tries to modify a read-only property.
      headers: {}
  tags:
  - Activities
  description: Updates an activity's comment and, on success, returns the updated
    activity.
  operationId: Update_activity
  requestBody:
    content:
      application/json:
        schema:
          example:
            comment:
              raw: The updated comment
          properties:
            comment:
              properties:
                raw:
                  type: string
              type: object
          type: object
  summary: Update activity