Support for passthrough by default

[Turtleguyy]

Currently, there doesn't seem to be a way to only use Pretender for only a couple of specific paths, while allowing everything else to behave normally.

I'm trying to use Pretender to stub out data for one or two endpoints that aren't built out yet on the server. Since I do have a whole lot of other endpoints that are built out, I'd like to tell it to go ahead and treat all unhandled requests as passthroughs. Essentially, if I didn't tell it what to do for a path, let my server handle it.

[pangratz]

Hmm, I think it should be possible with something like this:

var server = new Pretender(function() {
  // all handled routes here ...
  this.get('/api/version', function(request) {
    return [200, {}, JSON.stringify({ version: "123" })];
  });

  // add wildcards for all other routes and pass them through
  this.get('/*youvegottacatchemall', this.passthrough);
  this.post('/*youvegottacatchemall', this.passthrough);
  this.put('/*youvegottacatchemall', this.passthrough);
  this.delete('/*youvegottacatchemall', this.passthrough);
});

EDIT: as pointed out by @NLincoln below, in newer versions, the shorter path /** works as well.

[Turtleguyy]

That did it! Not sure why though. I tried this.get('/*', this.passthrough); with no luck. Why does adding text after the asterisk make it work?

Leaving the issue open for now because it'd still be a nice feature to have, even though there does seem to be a workaround.

[pangratz]

That did it! Not sure why though. I tried this.get('/*', this.passthrough); with no luck. Why does adding text after the asterisk make it work?

I think it's because route-recognizer needs a name for the dynamic path so it can be accessed inside the handler. So that's a route-recognizer thing not related to pretender.

[trek]

Closing, since @pangratz's solution is how you'd do this.

[NLincoln]

Even though this is old, it's the top result for "pretender default passthrough", and a better solution I've found is similar to the one at the top, but instead of making the url /*youvegottacatchemall, you can simply put /**, which works just as well.

[geochronology]

2020 called to confirm that @NLincoln's solution still works.

[lecstor]

We needed to support hosts as well and ended up with this little hack..

/**
 * override Pretender's checkPassthrough to implement passthrough-by-default
 * ie any requests that do not have a handler get passed through.
 */
Pretender.prototype.origCheckPassthrough = Pretender.prototype.checkPassthrough;

Pretender.prototype.checkPassthrough = function (request) {
  var verb = request.method.toUpperCase();
  var path = request.url;
  var handler = this._handlerFor(verb, path, request);

  if (handler) return this.origCheckPassthrough(request);

  this.passthroughRequests.push(request);
  this.passthroughRequest(verb, path, request);
  return true;
};

may cover #210 too, depending on use-case