1---
2stage: Plan
3group: Project Management
4info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
5---
6# Issuable-like Rails models utilities
7
8GitLab Rails codebase contains several models that hold common functionality and behave similarly to
9[Issues](../user/project/issues/index.md). Other examples of "issuables"
10are [Merge Requests](../user/project/merge_requests/index.md) and
11[Epics](../user/group/epics/index.md).
12
13This guide accumulates guidelines on working with such Rails models.
14
15## Important text fields
16
17There are maximum length constraints for the most important text fields for issuables:
18
19- `title`: 255 characters
20- `title_html`: 800 characters
21- `description`: 1 megabyte
22- `description_html`: 5 megabytes
23