Use accross multiple modules

[bb78657]

I'm not clear on how to use connect (Thingy.connect) across multiple modules in a Flask app, and how to drop to using raw pymongo. In PyMongo I can create a module level variable (or use Flask-PyMongo to handle this)

client = MongoClient()

then just re-use that connection from other modules by importing it. Could I just create a single Thingy and connect instance for the app then import these:

connection_reference.py

`

 from mongo_thingy import connect, Thingy

 connect("mongodb://localhost/test")

`

module_2.py: `

where I want to use Thingy for Thingy defined objects

  from connection_reference import Thingy`

module_3.py

`

in 90% of my app I want to use pymongo directly

 from connection_reference import Thingy

 db = Thingy._database
 #standard pymongo code

`

[ramnes]

Hi @bb78657! :wave:

connect is just an helper that calls Thingy.connect. You can use one or the other, the effect is the same: it creates a MongoClient and puts it inside the root Thingy class.

So basically, you just need to connect once, and from that moment the connection will be available in all your modules via Thingy or any of its children. That means that you don't have to import Thingy between your different modules, you can always import it from mongo_thingy.

On how to use PyMongo directly, the proper way of doing it is to use Thingy.collection, Thingy.database or Thingy.client.

If you often need to use the PyMongo database object directly inside Flask, I'd recommend you to put it in current_app during your application bootstrapping:

from flask import Flask
from mongo_thingy import Thingy

Thingy.connect("mongodb://localhost/test")

app = Flask(__name__)
app.database = Thingy.database

That way, you could reuse it nicely in another module:

from flask import current_app

current_app.database.do_something()

Does that answer your questions?

On a side note, our goal with Mongo-Thingy is that you don't need to use PyMongo directly and have all the tools needed directly inside your Thingy child classes. Please open another issue if you feel something is missing to that purpose. :+1:

[ramnes]

No news is good news, I'll close this for now. Feel free to reopen if needed!

[bb78657]

OK great, much appreciated