--- lang: en title: 'API docs: context.bindingkey' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/context permalink: /doc/en/lb4/apidocs.context.bindingkey.html --- [Home](./index.md) > [@loopback/context](./context.md) > [BindingKey](./context.bindingkey.md) ## BindingKey class **Signature:** ```typescript export declare class BindingKey ``` ## Properties
Property Modifiers Type Description
[CONFIG\_NAMESPACE](./context.bindingkey.config_namespace.md) `static` string Name space for configuration binding keys
[key](./context.bindingkey.key.md) `readonly` string
[PROPERTY\_SEPARATOR](./context.bindingkey.property_separator.md) `static` `readonly` (not declared)
[propertyPath?](./context.bindingkey.propertypath.md) `readonly` string \| undefined _(Optional)_
## Methods
Method Modifiers Description
[buildKeyForConfig(key)](./context.bindingkey.buildkeyforconfig.md) `static` Build a binding key for the configuration of the given binding. The format is `:$config`
[create(key, propertyPath)](./context.bindingkey.create.md) `static` Create a new key for a binding bound to a value of type `ValueType`.
[deepProperty(propertyPath)](./context.bindingkey.deepproperty.md) Get a binding address for retrieving a deep property of the object bound to the current binding key.
[generate(namespace)](./context.bindingkey.generate.md) `static` Generate a universally unique binding key. Please note the format of they generated key is not specified, you must not rely on any specific formatting (e.g. UUID style).
[parseKeyWithPath(keyWithPath)](./context.bindingkey.parsekeywithpath.md) `static` Parse a string containing both the binding key and the path to the deeply nested property to retrieve.
[toString()](./context.bindingkey.tostring.md)
[validate(key)](./context.bindingkey.validate.md) `static` Validate the binding key format. Please note that `#` is reserved. Returns a string representation of the binding key.