E07690: HTTP access verb not supported in this context

What went wrong

A parameter of a method that is NOT an HTTP endpoint carries an HTTP access marker (':=: CONTENT', ':=: PATH', ':=: QUERY "q"', ':=: HEADER "h"', ':=: REQUEST', ':=: CONTEXT'). Only a service's HTTP methods and operators receive a request, so only their parameters can be read from one. A private helper of a service takes ordinary parameters.

Worked examples

Compilable examples demonstrating this error and the correct fix:

• ek9 -q 1323 (Why does EK9 reject an HTTP access marker (:=: PATH) o...)

How to fix it

1. Read the value in the HTTP method (its parameter keeps the marker)
2. Pass it to the helper as an ordinary parameter (no ':=:' marker)

The [EXAMPLE] section below shows a private helper whose parameter reads CONTENT, and the POST method taking the CONTENT and passing it to the helper.

See also

• E07690: an HTTP access marker on a method that is not an HTTP endpoint (this error)
• E07700: invalid path parameter format

Examples

Every example is compiled by the EK9 compiler: the first fails exactly as captioned, the others fix it.

Fails with E07690: HTTP access verb not supported in this context

#!ek9
defines module error.e07690.bad

  defines class

    TextResponse with trait of HTTPResponse
      text as String?

      default private TextResponse()

      TextResponse()
        -> body as String
        this.text: body

      override contentType() as pure
        <- rtn as String: "text/plain"

      override content()
        <- rtn as Bytes: Bytes().withUtf8(text)

      override status() as pure
        <- rtn as Integer: 200

      default operator ?

  defines service

    Addresses for :/addresses open

      create() as POST for :/
        -> incoming as String :=: CONTENT
        <- response as HTTPResponse: TextResponse(normalise(incoming))

      //Not an HTTP method, so there is no request to take CONTENT from
      private normalise()
        -> text as String :=: CONTENT
        <- rtn as String: text.trim()

Fixed: Bind HTTP values only on the HTTP method

#!ek9
defines module error.e07690.good

  defines class

    TextResponse with trait of HTTPResponse
      text as String?

      default private TextResponse()

      TextResponse()
        -> body as String
        this.text: body

      override contentType() as pure
        <- rtn as String: "text/plain"

      override content()
        <- rtn as Bytes: Bytes().withUtf8(text)

      override status() as pure
        <- rtn as Integer: 200

      default operator ?

  defines service

    Addresses for :/addresses open

      //The HTTP method takes the CONTENT...
      create() as POST for :/
        -> incoming as String :=: CONTENT
        <- response as HTTPResponse: TextResponse(normalise(incoming))

      //...and passes it to a helper with an ordinary parameter
      private normalise()
        -> text as String
        <- rtn as String: text.trim()

Questions and answers

These Q&A entries show E07690 and its fix:

• Q1323: Why does EK9 reject an HTTP access marker (:=: PATH) on a service operation's returning parameter?