Commit c3c1a357 authored by Rémy Coutable's avatar Rémy Coutable

Merge branch 'note-on-mysql-for-db-seed' into 'master'

Add more notes about developer seeds

See merge request !12836
parents cca3d9bf 170ec4af
......@@ -12,6 +12,56 @@ The `setup` task is a alias for `gitlab:setup`.
This tasks calls `db:reset` to create the database, calls `add_limits_mysql` that adds limits to the database schema in case of a MySQL database and finally it calls `db:seed_fu` to seed the database.
Note: `db:setup` calls `db:seed` but this does nothing.
### Automation
If you're very sure that you want to **wipe the current database** and refill
seeds, you could:
``` shell
echo 'yes' | bundle exec rake setup
```
To save you from answering `yes` manually.
### Discard stdout
Since the script would print a lot of information, it could be slowing down
your terminal, and it would generate more than 20G logs if you just redirect
it to a file. If we don't care about the output, we could just redirect it to
`/dev/null`:
``` shell
echo 'yes' | bundle exec rake setup > /dev/null
```
Note that since you can't see the questions from stdout, you might just want
to `echo 'yes'` to keep it running. It would still print the errors on stderr
so no worries about missing errors.
### Notes for MySQL
Since the seeds would contain various UTF-8 characters, such as emojis or so,
we'll need to make sure that we're using `utf8mb4` for all the encoding
settings and `utf8mb4_unicode_ci` for collation. Please check
[MySQL utf8mb4 support](../install/database_mysql.md#mysql-utf8mb4-support)
Make sure that `config/database.yml` has `encoding: utf8mb4`, too.
Next, we'll need to update the schema to make the indices fit:
``` shell
sed -i 's/limit: 255/limit: 191/g' db/schema.rb
```
Then run the setup script:
``` shell
bundle exec rake setup
```
To make sure that indices still fit. You could find great details in:
[How to support full Unicode in MySQL databases](https://mathiasbynens.be/notes/mysql-utf8mb4)
## Run tests
In order to run the test you can use the following commands:
......
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