Clear db with mongoid3

Question

I like to perform a set up before each time I run a unit test and clear my mongo db, how do I do it with mongoid?

I found some links about it while googling but nothing seemed to work.

score 5 · Accepted Answer · answered Jan 28 '14 at 09:16

5

Output of rake -T

rake db:drop           # Drops all the collections for the database for the current Rails.env
..
rake db:mongoid:drop   # Drops the database for the current Rails.env
rake db:mongoid:purge  # Drop all collections except the system collections
..
rake db:purge          # Drop all collections except the system collections

answered Jan 28 '14 at 09:16

Santhosh

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Apparently in more recent versions (7.3) `Mongoid.purge!` – B Seven Aug 03 '22 at 02:21

score 2 · Answer 2 · answered Nov 04 '12 at 14:28

This discussion(Delete All Collections in Mongoid 3) in mongoid group seems relevant. There are two methods purge! and truncate!. Purge drops the collections, which means also the indexes. Truncate only drops the documents in each collection, which means you retain indexes, but it is slower than purge.

score 2 · Answer 3 · answered Nov 04 '12 at 14:36

2

You might want to take a look at database_cleaner gem which abstracts cleaning databases in specs

answered Nov 04 '12 at 14:36

Alon Burg

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Thanks, I'm using this gem. – Chen Kinnrot Jan 25 '15 at 13:12
I think a gem is not necessary: `Mongoid.purge!` – B Seven Aug 03 '22 at 02:21

score 1 · Answer 4 · answered Mar 03 '13 at 13:58

1

If you're using Rails, you can run rake db:mongoid:purge to drop all collections except the system collections.

Or, run rake db:mongoid:drop to drop the database from the current Rails.env.

answered Mar 03 '13 at 13:58

Tonez

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Clear db with mongoid3

4 Answers4