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Update has_many-associations.md #1629

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Update has_many-associations.md #1629

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15 changes: 14 additions & 1 deletion docs/src/cookbook/has_many-associations.md
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,20 @@ create(:user_with_posts).posts.length # 5
create(:user_with_posts, posts_count: 15).posts.length # 15
```

Or, for a solution that works with `build`, `build_stubbed`, and `create`
A simple example that works for build without having to save to a database:
```ruby
trait :with_completed_survey_visit do
after(:build) do |home, evaluator|
survey_visit = build(:survey_visit, home: home) #belongs_to association
# Below line is required for the association to work from home.survey_visits without saving to the database
# Otherwise it only works in one direction: survey_visit.home
home.survey_visits << survey_visit # has_many association
end
end
end
```

Or, for another solution that works with `build`, `build_stubbed`, and `create`
(although it doesn't work well with `attributes_for`), you can use inline
associations:

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