Javascript: Can't get a secondary database instance by URL

[Michael]

Trying to connect to a second database instance by URL but keep getting an error.

Code: (Copied directly from the docs)

var database = firebase.database('https://MY-FIREBASE.firebaseio.com');

returns an error of:

vendors.js:150 database: Firebase: firebase.database() takes either no argument or a Firebase App instance. (app/invalid-app-argument).

Using the latest version:

/*!

 * @license Firebase v4.9.1

 * Build: rev-631e1ad

 * Terms: https://firebase.google.com/terms/

 */

Any ideas? 

[Kato Richardson]

Hey Michael,

Looking into this. I was able to repro.

☼, Kato

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Kato Richardson |

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775-235-8398

[Michael]

Thanks Kato.

Also having the same type of issue with functions:

const functions = require('firebase-functions');

const firebase = require('firebase-admin');

firebase.initializeApp(functions.config().firebase);

const DB = firebase.database("<database-name>");

firebase deploy --only functions    Returns an error message:

TypeError: ns.ensureApp(...).database is not a function

On Tuesday, February 27, 2018 at 11:34:52 AM UTC-5, Kato Richardson wrote:

Hey Michael,

Looking into this. I was able to repro.

☼, Kato

On Mon, Feb 26, 2018 at 2:40 PM, Michael <mi...@quickhuddle.com> wrote:

Trying to connect to a second database instance by URL but keep getting an error.

Code: (Copied directly from the docs)

var database = firebase.database('https://MY-FIREBASE.firebaseio.com');

returns an error of:

vendors.js:150 database: Firebase: firebase.database() takes either no argument or a Firebase App instance. (app/invalid-app-argument).

Using the latest version:

/*!

 * @license Firebase v4.9.1

 * Build: rev-631e1ad

 * Terms: https://firebase.google.com/terms/

 */

Any ideas? 

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[Kato Richardson]

So it looks like we need to update our docs. Using firebase.database(<string>) isn't actually supported yet. Not sure why. I'll work on that.

For now, you can use an approach like this, where you just pass the app instance in rather than the string. 

It's fine to call initializeApp() multiple times with the same credentials, and just change out the DB URL. Note the second argument (a string naming the app instance).

☼, Kato

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[Michael]

Cool! That seems to work. Thanks for the quick response.

Found another possible error using multiple databases with functions.

Using this example of a function::

exports.testFunction= functions.database.instance(<datbase-name').ref('/test/{requestId}/').onCreate(event => {

the event.params is set to:

{

        requestId: undefined

}

If I run the same function using the default database it returns the correct value:

exports.testFunction= functions.database.ref('/test/{requestId}/').onCreate(event => {

the event.params is set to:

{

        requestId: -L6PuS5Mhpk1K0hkszE5

}

Any ideas? 

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[Kato Richardson]

Another great find. Would you mind submitting that one as a bug? Support can investigate and find a workaround, but will probably need to work with you a bit to repro the problem.

☼, Kato

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[vik...@chotahospital.in]

Hi Kato, 

I am still facing the same problem as Michael. I have put the same question on stackoverflow as well. Any updates on support of firebase.database(<url>) implementation ?

FYI - Firebase version v5.0.4

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[Kato Richardson]

Use the app instance as I mentioned previously. Example here.

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