Matt Luo Posts - Convex Community

Matt Luo

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CCConvex Community

•Created by Matt Luo on 3/22/2025 in #show-and-tell

matthewluo.com personal website for Convex experimentation and blog for Matt Luo

5 replies

CCConvex Community

•Created by Matt Luo on 1/18/2025 in #support-community

How to migrate personal deployment to another Convex team and project?

In my Convex plan, I have reached my seat max for teammates in my Convex team. We have a project with this max count of developers. My company just brought in a new colleague. If I remove a pre-existing teammate, Alice, from my Convex team, and then add Bob, the new colleague, to the Convex team, then what happens to Alice's non-production deployment? If Alice's personal deployment is deleted, what can be done to preserve Alice's personal deployment? She may very well create her own Convex team and project, but that particular personal deployment already has documents in the tables. Is there a native migration feature in Convex for deployments, or must she do a data export/import in order to replicate her old deployment in a new Convex project?

9 replies

CCConvex Community

•Created by Matt Luo on 1/17/2025 in #support-community

How do I navigate to a foreign key's document?

6 replies

CCConvex Community

•Created by Matt Luo on 1/14/2025 in #support-community

Can a Convex project can route exceptions to multiple Sentry DSNs simultaneously?

https://docs.convex.dev/production/integrations/exception-reporting Documentation shows a Configure Sentry popup that seems to have a single field for the Sentry Data Source Name (DSN).

3 replies

CCConvex Community

•Created by Matt Luo on 12/30/2024 in #support-community

Is Authenticated function required to integrate convex with clerk?

If so, it should be explicit and emphasized. Common mistakes in my team.

10 replies

CCConvex Community

•Created by Matt Luo on 12/6/2024 in #support-community

Docs feedback: CLERK_SECRET_KEY is not findable

This ~~critical~~ (edit: I'm not actually sure which scenarios it is required) environment variable, CLERK_SECRET_KEY, is not in plain text, so therefore not findable in documentation. It is burned into an image on https://docs.convex.dev/auth/clerk

8 replies

CCConvex Community

•Created by Matt Luo on 11/17/2024 in #support-community

Does Vercel charge bandwidth for Convex images?

My team’s building a messaging aspect to our Next.js app and this question came up: We’re pretty confident that Vercel bandwidth is charged for images in the /next directory. These are images distributed throughout the Vercel CDN. But do images in convex (file storage) get charged for Vercel bandwidth when displayed on the front end?

4 replies

CCConvex Community

•Created by Matt Luo on 10/4/2024 in #show-and-tell

Language Hopper: language learning based on interactive interlinear translations

3 replies

CCConvex Community

•Created by Matt Luo on 9/5/2024 in #support-community

Bug: Console missing CONVEX_DEPLOY_KEY

8 replies

CCConvex Community

•Created by Matt Luo on 9/4/2024 in #support-community

YouTube video watch party design

I have a use case of integrating with the YouTube player iframe API, so that there can be a watch party of multiple users watching the same YouTube video (w/ the video playing at the playing time for all watchers). How would I design a situation like this? What I'm currently thinking is writing the currentPlayingTime to the Convex database every time someone clicks somewhere on the playing bar. Alternatively, I could choose some repeating write logic, e.g. write the current playtime every second or so, but that would cause the video to have a skipping effect since YouTube API can only play to the nearest second.

1 replies

CCConvex Community

•Created by Matt Luo on 8/13/2024 in #support-community

Do geographically distant developers experience different errors?

18 replies

CCConvex Community

•Created by Matt Luo on 8/7/2024 in #support-community

Convex Ents: inconsistent singularization of field names

In Convex Ents many-to-many relationships, I noticed that Convex Ents generates field names that use tables names themselves, as opposed to the singular forms of those table names. This behavior is inconsistent with the one-to-one and one-to-many relationships, which generate fields using the singular form of table names. Let's take the example in https://labs.convex.dev/convex-ents/schema#manymany-edges. Here, I think Convex Ents generates field names in the messages_to_assignedTags junction table as tagsId and messagesId. If Convex Ents were consistent with one-to-many relationships, the generated fields would be tagId and messageId. 1) What is the expected behavior of Convex Ents? 2) My table names have a plural form, e.g. messages. To best use Convex Ents now and in the future, should the fields in junction tables use the singular or plural form of table names? i.e. messageId or messagesId?

2 replies

CCConvex Community

•Created by Matt Luo on 8/6/2024 in #support-community

Convex Ents: how to express optional reference in 1 to many relationship?

From this documentation https://labs.convex.dev/convex-ents/schema, I'm trying to figure out a common use case, how to express zero-or-many? Looking at the documentation's example, how can I express that a user can have zero or many messages?

defineEntSchema({
  users: defineEnt({
    name: v.string(),
  }).edges("messages", { ref: true }),
  messages: defineEnt({
    text: v.string(),
  }).edge("user"),
});

defineEntSchema({
  users: defineEnt({
    name: v.string(),
  }).edges("messages", { ref: true }),
  messages: defineEnt({
    text: v.string(),
  }).edge("user"),
});

30 replies

CCConvex Community

•Created by Matt Luo on 8/6/2024 in #support-community

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: https://discord.com/channels/1019350475847499849/1270846055017353328 - 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()

5 replies

CCConvex Community

•Created by Matt Luo on 8/5/2024 in #support-community

Does defineEntSchema have a way to set strictTableNameTypes: false ?

In the process of converting my schema.ts to use Convex Ents, I am getting an npx convex dev error for a table I had not previously defined in defineSchema(): Argument of type '"tableName"' is not assignable to parameter of type 'TableNamesInDataModel Adding strictTableNameTypes: false to my defineEntSchema() causes problems in functions.ts:

Argument of type 'EntDataModelFromSchema<SchemaDefinition<{ users: EntDefinition<VObject<{ name: string; tokenIdentifier: string; }, { name: VString<string, "required">; tokenIdentifier: VString<string, "required">; FieldName: VString<string, "required">; }, "required", "name" | "tokenIdentifier">, { ...; }, {}, {}, { ...; } & ... 6 ...' is not assignable to parameter of type 'GenericEntsDataModel'.
  Type 'EntDataModelFromSchema<SchemaDefinition<{ users: EntDefinition<VObject<{ name: string; tokenIdentifier: string; }, { name: VString<string, "required">; tokenIdentifier: VString<string, "required">; FieldName: VString<string, "required">; }, "required", "name" | "tokenIdentifier">, { ...; }, {}, {}, { ...; } & ... 6 ...' is not assignable to type 'Record<string, GenericEntModel>'.
    'string' index signatures are incompatible.
      Property 'edges' is missing in type '{ document: any; fieldPaths: string; indexes: {}; searchIndexes: {}; vectorIndexes: {}; }' but required in type 'GenericEntModel'.

Argument of type 'EntDataModelFromSchema<SchemaDefinition<{ users: EntDefinition<VObject<{ name: string; tokenIdentifier: string; }, { name: VString<string, "required">; tokenIdentifier: VString<string, "required">; FieldName: VString<string, "required">; }, "required", "name" | "tokenIdentifier">, { ...; }, {}, {}, { ...; } & ... 6 ...' is not assignable to parameter of type 'GenericEntsDataModel'.
  Type 'EntDataModelFromSchema<SchemaDefinition<{ users: EntDefinition<VObject<{ name: string; tokenIdentifier: string; }, { name: VString<string, "required">; tokenIdentifier: VString<string, "required">; FieldName: VString<string, "required">; }, "required", "name" | "tokenIdentifier">, { ...; }, {}, {}, { ...; } & ... 6 ...' is not assignable to type 'Record<string, GenericEntModel>'.
    'string' index signatures are incompatible.
      Property 'edges' is missing in type '{ document: any; fieldPaths: string; indexes: {}; searchIndexes: {}; vectorIndexes: {}; }' but required in type 'GenericEntModel'.

1 replies

CCConvex Community

•Created by Matt Luo on 7/31/2024 in #support-community

Export of Convex Ents documentation

Is it possible to export the Convex Ents documentation into a single file? https://labs.convex.dev/convex-ents

16 replies

CCConvex Community

•Created by Matt Luo on 7/31/2024 in #support-community

Are there example repos using Convex Ents?

Are there open source or example repos using Convex Ents? I didn't get any search results from the GitHub search bar in the get-convex org. https://github.com/search?q=org%3Aget-convex%20defineEntSchema&type=code

23 replies

CCConvex Community

•Created by Matt Luo on 7/28/2024 in #support-community

Which identifier generator library to use for message channel and threads?

1) I am building a Discord-like messaging experience. For servers, channel, threads, etc. it appears that Discord uses Snowflake IDs, 18-integer long numeric values. What would you recommend for a Convex project? It seems that for a single Convex project, IDs that are unique over distributed database nodes is not important, but sort-ability and query performance are important.
If I wanted to keep my programming efforts really simple, I could simply use a _id field values themselves, but 32-characters is a lot of characters to put in URLs, especially when multiple resources are involved. 2) Likewise, what would you recommend for a user profile external identifier? Looks like LinkedIn appends a 8-character long suffix that uses a combination of all-lowercase letters and numbers.

12 replies

CCConvex Community

•Created by Matt Luo on 7/26/2024 in #support-community

How do you get the issuer for a new user account from Clerk webhooks?

I followed this documentation: https://docs.convex.dev/auth/database-auth#set-up-webhooks and was able to use a Clerk webhook in order to automatically insert a document in users Convex table. But, I'm trying to adhere to the pattern where the users table has a tokenIdentifier column. The problem is that I don't see a way to get the issuer value from the Clerk webhook.

20 replies

CCConvex Community

•Created by Matt Luo on 7/26/2024 in #support-community

Database filter operator, contains

Does Convex dashboard have a database column filter operator, contains?

9 replies