### Using context managers in dependencies with `yield`

/// warning

This is, more or less, an "advanced" idea.

If you are just starting with **FastAPI** you might want to skip it for now.

///

func (db *DB) Limit(limit int) (tx *DB) {
	tx = db.getInstance()
	tx.Statement.AddClause(clause.Limit{Limit: &limit})
	return
}

// Offset specify the number of records to skip before starting to return the records
//
// Offset conditions can be cancelled by using `Offset(-1)`.
//
//	// select the third user
//	db.Offset(2).First(&user)
//	// select the first user by cancelling an earlier chained offset

#### CRD Watcher

For watches against custom types (CRDs), we want to gracefully handle missing CRDs. Naively starting informers against the missing types would result in errors and blocking startup. Instead, we introduce a "CRD Watcher" component that watches the CRDs in the cluster to determine if they are available or not.

In this section you will see how to manage authentication and authorization with the same OAuth2 with scopes in your **FastAPI** application.

/// warning

This is a more or less advanced section. If you are just starting, you can skip it.

You don't necessarily need OAuth2 scopes, and you can handle authentication and authorization however you want.

But OAuth2 with scopes can be nicely integrated into your API (with OpenAPI) and your API docs.

* In code blocks within the Markdown document, translate comments (`# a comment`), but leave the rest unchanged.

* Do not change anything enclosed in "``" (inline code).

* In lines starting with `///` translate only the ` "... Text ..."` part. Leave the rest unchanged.

nly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload" # - "s3:GetObject" # - "s3:DeleteObject" # - "s3:PutObject"...

nly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload" # - "s3:GetObject" # - "s3:DeleteObject" # - "s3:PutObject"...

nly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload" # - "s3:GetObject" # - "s3:DeleteObject" # - "s3:PutObject"...

nly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload" # - "s3:GetObject" # - "s3:DeleteObject" # - "s3:PutObject"...

nly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload" # - "s3:GetObject" # - "s3:DeleteObject" # - "s3:PutObject"...