RequestContext

RequestContext

RequestContext

The RequestContext holds information relevant to the current request, which may be required at various points of the stack.

It is a good practice to inject the RequestContext (using the Ctx decorator) into all resolvers & REST handlers, and then pass it through to the service layer.

This allows the service layer to access information about the current user, the active language, the active Channel, and so on. In addition, the TransactionalConnection relies on the presence of the RequestContext object in order to correctly handle per-request database transactions.

Example

@Query()
myQuery(@Ctx() ctx: RequestContext) {
  return this.myService.getData(ctx);
}

Signature

class RequestContext {
  static empty() => RequestContext;
  static deserialize(ctxObject: SerializedRequestContext) => RequestContext;
  userHasPermissions(permissions: Permission[]) => boolean;
  serialize() => SerializedRequestContext;
  copy() => RequestContext;
  req: Request | undefined
  apiType: ApiType
  channel: Channel
  channelId: ID
  languageCode: LanguageCode
  session: CachedSession | undefined
  activeUserId: ID | undefined
  isAuthorized: boolean
  authorizedAsOwnerOnly: boolean
  translate(key: string, variables?: { [k: string]: any }) => string;
}

Members

empty

static method
type:
() => RequestContext
Creates an “empty” RequestContext object. This is only intended to be used when a service method must be called outside the normal request-response cycle, e.g. when programmatically populating data.

deserialize

static method
type:
(ctxObject: SerializedRequestContext) => RequestContext
Creates a new RequestContext object from a serialized object created by the serialize() method.

userHasPermissions

method
type:
(permissions: Permission[]) => boolean
Returns true if there is an active Session & User associated with this request, and that User has the specified permissions on the active Channel.

serialize

method
type:
() => SerializedRequestContext
Serializes the RequestContext object into a JSON-compatible simple object. This is useful when you need to send a RequestContext object to another process, e.g. to pass it to the Job Queue via the JobQueueService.

copy

method
type:
() => RequestContext
Creates a shallow copy of the RequestContext instance. This means that mutations to the copy itself will not affect the original, but deep mutations (e.g. copy.channel.code = ‘new’) will also affect the original.

req

property
type:
Request | undefined
The raw Express request object.

apiType

property
type:
ApiType
Signals which API this request was received by, e.g. admin or shop.

channel

property
type:
Channel
The active Channel of this request.

channelId

property
type:
ID

languageCode

property
type:
LanguageCode

session

property
type:
CachedSession | undefined

activeUserId

property
type:
ID | undefined

isAuthorized

property
type:
boolean
True if the current session is authorized to access the current resolver method.

authorizedAsOwnerOnly

property
type:
boolean
True if the current anonymous session is only authorized to operate on entities that are owned by the current session.

translate

method
type:
(key: string, variables?: { [k: string]: any }) => string
Translate the given i18n key