Question

I have a model “Post”:

class Post(db.Document):
    created_at = db.DateTimeField(default=datetime.datetime.now, required=True)
    title = db.StringField(max_length=255, required=True)
    slug = db.StringField(max_length=255, required=True)
    body = db.StringField(required=True)

Assuming I create a post variable with the Post object, but before I save it off I save it to a collection name other than the default (Post) for example:

post._meta['collection'] = "customcollection"
post.save();

Then how do I fetch all the documents in the customcollection with mongoengine?

Normally if I did not set customcollection I could do something like:

for item in Post.objects:
    print item.title

But since I set a customcollection, I want to be able to do something like:

for item in customcollection.objects:
    print item.title

Though I get a:

NameError: global name 'customcollection' is not defined

What do I need to do in syntax to be able to fetch all the Post objects in my customcollection?

Answer 1

If you want the Post document class to point to customcollection just do this:

class Post(db.Document):
    created_at = db.DateTimeField(default=datetime.datetime.now, required=True)
    title = db.StringField(max_length=255, required=True)
    slug = db.StringField(max_length=255, required=True)
    body = db.StringField(required=True)
    meta = {'collection': 'customcollection'}

Now when you do:

for item in Post.objects:
    print item.title

It should read its posts out of the customcollection collection.