Convex CommunityCCConvex Community
Powered by
Matt LuoM
Convex Communityโ€ข2y agoโ€ข
4 replies
Matt Luo

Convex Ents: when defining m:m relationships, must the junction table have its own defineEnt()

when defining many to many relationships using Convex Ents, must the junction table have its own defineEnt()?

- If I don't give the junction table its own defineEnt, then I get an error in npx convex dev like:

Argument of type 'myJunctionTable"' is not assignable to parameter of type 'TableNamesInDataModel<EntDataModelFromSchema<SchemaDefinition<{

If I do provide a defineEnt() for the junction table, then I will get the error:
400 Bad Request: FieldsNotUniqueWithinIndex: Hit an error while evaluating your schema:

In table "directMessageChannelMembers": In index "directMessageChannelId": Duplicate field "directMessageChannelId". Index fields must be unique within an index.

If I don't specify the field name in the edges() function, then Convex Ents will use my table name (which is in plural form) to generate the field names. That may be a separate issue, reported here:
support-communityConvex Ents: inconsistent singularization of field names

- Also, if I need to add more columns to the junction table beyond the foreign keys, then it seems I need to give the junction table its own defineEnt()
Convex Community banner
Convex CommunityJoin
Join the Convex Discord! Explore Convex, the backend platform that keeps your app in sync.
15,010Members
Resources

Similar Threads

Was this page helpful?
Recent Announcements
Recent Announcements
james

Hi @everyone with everything going on today I forgot to post on discord about our EU launch! We have a region in Dublin now! You can start using it immediately, even for folks on the free plan. https://news.convex.dev/we-finally-got-our-eu-visa/ Stay tuned for more regions but also stay tuned for more infra improvements where we improve latency for teams no matter where their servers are located. Just at the tip of the iceberg re all the optimizations we have lined up.

james ยท 23h ago

Wayne

Hi @everyone happy Monday. Components Authoring [Challenge](https://www.convex.dev/components/challenge) updates! Meet the second batch of community-approved components **Firecrawl Scrape **- Scrape any URL and get clean markdown, HTML, screenshots, or structured JSON - with durable caching and reactive queries. https://www.convex.dev/components/firecrawl-scrape Built by: Gitmaxd **Durable Agents **- A Convex component for building durable AI agents with an async tool loop. https://www.convex.dev/components/durable-agents Built by: Siegfried **Convex Debouncer** - A server-side debouncing component for debouncing expensive operations like LLM calls, metrics computation, or any heavy processing that should only run after a period of inactivity. https://www.convex.dev/components/debouncer Built by: Ilya **DatabaseChat **- A Convex component for adding natural language database queries to your app. https://www.convex.dev/components/database-chat Built by: Nick **Transloadit** - A Convex component for creating Transloadit Assemblies, handling resumable uploads with status, and persisting status/results in Convex. https://www.convex.dev/components/transloadit Built by: Kvz **Loops** - A Convex component for integrating with Loops.so email marketing platform. https://www.convex.dev/components/loops Built by: Bobby The [challenge](https://www.convex.dev/components/challenge) is now ongoing, so keep building, and we'll keep rewarding. Thanks, everyone!

Wayne ยท 2w ago

Liz C

Hi everyone! Have you ever wanted to get your hands on some convex swag? Well you're in luck! We just launched our Convex swag store. Check it out here ---> https://store.convex.dev/

Liz C ยท 3w ago

Similar Threads

Polymorphic relationships with Convex Ents
Convex BotCConvex Bot / support-community
2w ago
Convex ents
JamalJJamal / support-community
2y ago
anyone have done convex-helper triggers + convex-ents
ibrahimyaacobIibrahimyaacob / support-community
16mo ago
Can we use zodToConvex with defineEnt when defining ent schema?
anmot.Aanmot. / support-community
2y ago