path value starts with a dot about express-openapi-validator HOT 3 CLOSED

@paulmarshall
This message is provided by Ajv. We do minimal processing on that message.

We could attempt to process that message further or perhaps even add a hook to allow you to transform the value. However, this can already by achieved fairly easily without any new change.

For example

The following error handler will strip the first qualifier (if present), returning the message in your preferred format
e.g.

  // Register error handler
  app.use((err, req, res, next) => {
    res.status(err.status || 500).json({
      errors: errors.map(p => ({
          ...p, 
          path: p.path.match(/^\.?(query|headers|path)?\.?(.*)/)[2]})
    });
  });

(Note, I'm sure there is a better regex than what I came up with above)

This custom error handler will transform the error message from e.g.

[ { path: '.query.limit',
    message: 'should have required property \'limit\'',
    errorCode: 'required.openapi.validation' },
  { path: '.query.test',
    message: 'should have required property \'test\'',
    errorCode: 'required.openapi.validation' } ]

to (which i believe is your preference)

[ { path: 'limit',
    message: 'should have required property \'limit\'',
    errorCode: 'required.openapi.validation' },
  { path: 'test',
    message: 'should have required property \'test\'',
    errorCode: 'required.openapi.validation' } ]

Hope this helps

from express-openapi-validator.

@paulmarshall please reopen if the proposed solution is not satisfactory. thanks!

from express-openapi-validator.

Good workaround - works for me, but puzzling why "Ajv" would think the dot prefix was acceptable in the first instance. Oh well - thanks for looking into this.

from express-openapi-validator.