Define a Contant String Value

[Greg Fox]

In my API I have a set of regex patterns that I use throughout the document for the "pattern" field. I want to make some sort of a constant values that I can re-use instead of having a bunch of copies of the same regex pattern. This is for readability and to reduce the locations that have to be updated if the regex is changed.

I've tried a few things. The most recent was to define an extension as shown below. The example shows two ways that I tried to do it. The first was just direct properties with values and the last one, "objected" was by creating an extension called "x-val" so that I could specify the type as "string.

Is there a way to do what I am trying to do with Swagger 2.0?

x-formatting:

  username: "/^[A-Z0-9][A-Z0-9-]+[A-Z0-9]$/i"

  targetname: "/^[A-Z0-9\\-\\._]+$/i"

  groupname: "/^[A-Z0-9][A-Z0-9-]+[A-Z0-9]$/i"

  email: "/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,20}$/i"

  objectid:

    type: string

    x-val: "/^[0-9a-fA-F]{24}$/"

... and here are the attempted references

pattern:

    $ref: "#/x-formatting/username"

pattern:

    $ref: "#/x-formatting/objectid/x-val"

The error I am getting is that the pattern field is expecting a "string"

[Ron Ratovsky]

Unfortunately, the spec doesn’t support referencing pattern values, you’d have to copy them, or reuse the object that contains them.

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