Functional equivalent to toPostgres

[moll]

Hey,

The toPostgres method is great for classes and objects one can edit, but unsuitable for closed classes one's not supposed to touch. What would the functional equivalent be that doesn't require mucking other classes?

I've so far wrapped pg/lib/utils's prepareValue, but I'm worried it's not part of the public API. Also, its array preparing function arraySring calls prepareValue directly, rather than through the module.exports object, bypassing my modifications.

Thanks!

[brianc]

What about:

var makeConverter = function(converter) {
  var ConvertWrapper = function(raw) {
   this.raw = raw
  }
  ConvertWrapper.prototype.toPostgres = function( ) {
    return converter(raw)
  }
  return function(item) {
     return new ConvertWrapper(item)
  }
}


//in your code
var opaqueTypeConverter = makeConverter(function(raw) {
  return 1;
})

pg.query('INSERT INTO something', [opaqueTypeConverter(yourOpaqueType)])

On Wed, May 20, 2015 at 11:46 AM, Andri Möll notifications@github.com
wrote:

Hey,

The toPostgres method is great for classes and objects one can edit, but
unsuitable for closed classes one's not supposed to touch. What would the
functional equivalent be that doesn't require mucking other classes?

I've so far wrapped pg/lib/utils's prepareValue, but I'm worried it's not
part of the public API. Also, its array preparing function arraySring
calls prepareValue directly, rather than through the module.exports
object, bypassing my modifications.

Thanks!

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