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# Canvas API Deprecation In the examples below, the deprecation dates should follow these rules: * The `NOTICE` date should be the date that the deprecation warning will first be visible in production. * To determine the `EFFECTIVE` date, add 90 days to the `NOTICE` date. If that day is a production release date, use that date. If that date is _not_ a production release date, use the next production release date after that date. * Both dates should be formatted as YYYY-MM-DD. ## API Method Deprecation To deprecate an API method, use the `@deprecated_method` tag. You must provide a `NOTICE` date and an `EFFECTIVE` date for the deprecation, along with a description for the deprecation. ### Deprecate a method with a replacement ```ruby # @deprecated_method NOTICE YYYY-MM-DD EFFECTIVE YYYY-MM-DD # A description of the deprecated method and why we're deprecating it. # Use {api:FooController#bar_action Foo#bar_action} instead. def foo_action end def bar_action end ``` ### Deprecate a method without a replacement ```ruby # @deprecated_method NOTICE YYYY-MM-DD EFFECTIVE YYYY-MM-DD # A description of the deprecated method and why we're deprecating it. def foo_action end ``` ## API Model Deprecation To deprecate an API model, add the `deprecated`, `deprecation_notice`, `deprecation_effective`, and `deprecation_description` keys. These keys can be applied at the base model level to deprecate the entire model, or they can be applied at the property level to individually deprecate model properties. ### Deprecate an entire API model ```ruby # @model Foo # { # "id": "Foo", # "description": "A description.", # "deprecated": true, # "deprecation_notice": "YYYY-MM-DD", # "deprecation_effective": "YYYY-MM-DD", # "deprecation_description": "A description of the deprecation.", # "properties": { # "bar": { # "description": "A property.", # "example": "baz", # "type": "string" # } # } # } ``` ### Deprecate an API model property ```ruby # @model Foo # { # "id": "Foo", # "description": "A description.", # "properties": { # "bar": { # "deprecated": true, # "deprecation_notice": "YYYY-MM-DD", # "deprecation_effective": "YYYY-MM-DD", # "deprecation_description": "A description of the deprecation.", # "description": "A property.", # "example": "baz", # "type": "string" # } # } # } ``` ## API Argument Deprecation To deprecate an API argument, rename the `@argument` tag to `@deprecated_argument`. You must provide a `NOTICE` date and an `EFFECTIVE` date for the deprecation, along with a description for the deprecation. Before: ```ruby # @argument foo [Required, String] # A description of the argument. ``` After: ```ruby # @deprecated_argument foo [Required, String] NOTICE YYYY-MM-DD EFFECTIVE YYYY-MM-DD # A description of the argument, along with a description of the deprecation. ``` ## API Response Field Deprecation To deprecate an API response field, rename the `@response_field` tag to `@deprecated_response_field`. You must provide a `NOTICE` date and an `EFFECTIVE` date for the deprecation, along with a description for the deprecation. Before: ```ruby # @response_field foo # A description of the response field. ``` After: ```ruby # @deprecated_response_field foo NOTICE YYYY-MM-DD EFFECTIVE YYYY-MM-DD # A description of the response field, along with a description of the # deprecation. ```