2019-10-07 02:06:10 -04:00
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# Issuable-like Rails models utilities
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2019-11-21 10:06:17 -05:00
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GitLab Rails codebase contains several models that hold common functionality and behave similarly to
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[Issues](https://docs.gitlab.com/ee/user/project/issues/). Other examples of "issuables"
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are [Merge Requests](https://docs.gitlab.com/ee/user/project/merge_requests/) and
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[Epics](https://docs.gitlab.com/ee/user/group/epics/).
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2019-10-07 02:06:10 -04:00
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This guide accumulates guidelines on working with such Rails models.
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## Important text fields
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There are max length constraints for the most important text fields for `Issuable`s:
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- `title`: 255 chars
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- `title_html`: 800 chars
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- `description`: 1 megabyte
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- `description_html`: 5 megabytes
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