Subscriptions with $contains and $search are not reactive

[jpsear]

Steps to reproduce

Subscribe to a service, using a $search query:

app.service('/service').find({ query: { firstName: { $search: '^james' } } }).subscribe(callback)

Expected behavior

The client receives updates when a document is added/removed/changed that matches the query

Actual behavior

The client does not receive the update

Upon calling the initial registration of the subscription, all data is returned as expected. But, the subscription isn't reactive — so we don't receive any more data.

[daffl]

Only the official query syntax is supported. $contains and $search are currently still database specific extensions.

[daffl]

To get updates for queries with those parameters the always list strategy can be used for now.

[DominikTrenz]

The official query syntax does not work for me. For example $gt and $gte

this.someService.find({ query: { $sort: { start: 1 }, start: { $gte: moment().startOf('day').toDate() } }, rx: { listStrategy: 'always' } });

This is not reactive - without the $gte it is reactive

[daffl]

@DominikTrenz This is unfortunately not enough information to reproduce and should also probably be a separate issue.

[DominikTrenz]

#62 I created a new issue. Please let me know if you need more information

[daffl]

#97 adds the ability to add custom sift expressions which allows to implement non-standard special keywords:

const feathersRx = require('feathers-reactive');

feathersRx.sift.use({
  $search(a, b) {
    return (a & b) ? 0 : -1; // 0 = exists, -1 = doesn't exist
  }
});

[jskrzypek]

Awesome! An elegant solution! Thanks, @daffl