Mongoose - Sharing models/schema between databases

[uma namasivayam]

Hi

I love mongoose for what it does.

I am wondering whether mongoose has the capability to share models and schema among database connection.

Here is the scenaro below

SchemaA and modelA are initialized to connA assigned to DBa (same localhost but different dbname)
SchemaB and modelB are initialized to connB assigned to DBb(same localhost but different dbname)

In this setup everything works perfect. I am able to query both in the same routine etc. But when i try to link document in DBb modelB (with SchemaA)

_ModelAid: {type: ObjectId, ref:SchemA}. I am able to run queries but when i run populate i get the missing Schema error.

Am i missing something here? or is there no such functionality?

What i am trying to accomplish is i want to segregate data in databases but still want to have a link between the two.

Thanks
Sam

[Anthony Ettinger]

you can make a schema plugin.

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Anthony Ettinger
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[uma namasivayam]

Is there a Tuturial or documentation please

[Anthony Ettinger]

probably documented somewhere, but here's a plugin I use for voting.

https://github.com/cristiandouce/mongoose-voting

On Sun, Mar 29, 2015 at 10:22 PM, uma namasivayam <umama...@gmail.com> wrote:

Is there a Tuturial or documentation please

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[uma namasivayam]

Hi Anthony,

I went through that plugin and i am not sure whether i will be able to share schemas or link populate schemas spanning different dbs.

Sam

[etti...@gmail.com]

You would create a module probably. 

-- Anthony

[Uma Namasivayam]

Has this been done before ? 

I doubt whether it is even possible to do so

Uma

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[Valeri Karpov]

Use the model name instead of the schema instance in your ref field: http://mongoosejs.com/docs/populate.html . Otherwise, should work so long as you have the correct model name

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[Uma Namasivayam]

Valeri

I should have been clear. I did use the model name in the ref field ref:'ModelA' but I still get the same error missing schema when I use populate. 

Uma

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[Uma Namasivayam]

I finally solved it after updating it to 4.0.1.

Great work!

Uma

On Mar 30, 2015, at 3:46 PM, Valeri Karpov <valeri...@10gen.com> wrote:

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[Valeri Karpov]

Glad to hear 4.0.1 helped :)

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