5a3247dd8c
Fixes #1305
Before Rails 6 when the build_stubbed strategy assigned an id on a
record without a primary key column, the `id=` method would no-op, and
the record would end up looking like a new_record (i.e. `new_record?`
would return true because the id was nil).
This problem surfaced because of a [change in Rails 6][rails], which
caused `id=` to raise a potentially confusing
`ActiveModel::MissingAttributeError: can't write unknown attribute ''`
for records without a primary key column.
Since build_stubbed stubbed was calling `id=` for all instances,
regardless of whether they had primary keys, it was raising the above
error.
To avoid this error, we check whether the instance has a primary_key
defined before setting the id.
We also changed `persisted?` and `new_record?` to be less dependent on
the id. That way those methods will work as expected for records without
primary keys.
[rails]:
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|---|---|---|
| .github | ||
| features | ||
| gemfiles | ||
| lib | ||
| spec | ||
| .gitignore | ||
| .hound.yml | ||
| .rspec | ||
| .rubocop.yml | ||
| .simplecov | ||
| .travis.yml | ||
| .yardopts | ||
| Appraisals | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| GETTING_STARTED.md | ||
| Gemfile | ||
| Gemfile.lock | ||
| LICENSE | ||
| NAME.md | ||
| NEWS.md | ||
| README.md | ||
| RELEASING.md | ||
| Rakefile | ||
| cucumber.yml | ||
| factory_bot.gemspec | ||
README.md
factory_bot 
factory_bot is a fixtures replacement with a straightforward definition syntax, support for multiple build strategies (saved instances, unsaved instances, attribute hashes, and stubbed objects), and support for multiple factories for the same class (user, admin_user, and so on), including factory inheritance.
If you want to use factory_bot with Rails, see factory_bot_rails.
Interested in the history of the project name?
Transitioning from factory_girl?
Check out the guide.
Documentation
You should find the documentation for your version of factory_bot on Rubygems.
See GETTING_STARTED for information on defining and using factories. We also have a detailed introductory video, available for free on Upcase.
Install
Add the following line to Gemfile:
gem 'factory_bot'
and run bundle install from your shell.
To install the gem manually from your shell, run:
gem install factory_bot
Supported Ruby versions
The factory_bot 5.x series supports MRI Ruby 2.3+.
The factory_bot 3.x+ series supports MRI Ruby 1.9. Additionally, factory_bot 3.6+ supports JRuby 1.6.7.2+ while running in 1.9 mode. See GETTING_STARTED for more information on configuring the JRuby environment.
For versions of Ruby prior to 1.9, please use factory_bot 2.x.
More Information
Useful Tools
- FactoryTrace - helps to find unused factories and traits.
Contributing
Please see CONTRIBUTING.md.
factory_bot was originally written by Joe Ferris and is now maintained by Josh Clayton. Many improvements and bugfixes were contributed by the open source community.
License
factory_bot is Copyright © 2008-2019 Joe Ferris and thoughtbot. It is free software, and may be redistributed under the terms specified in the LICENSE file.
About thoughtbot
factory_bot is maintained and funded by thoughtbot, inc. The names and logos for thoughtbot are trademarks of thoughtbot, inc.
We love open source software! See our other projects or hire us to design, develop, and grow your product.