How to "populate" related:oneToOne datatype in create endpoint

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2

It took me quite some hours, but (as usually with Strapi) the solution was very simple, it wasn’t just very straightforward. I had to set the permission of the users-permissions.user find value to true for authorised users. So when I finally figured this out, creating the controller for automatically adding the user id to the post, based on the authorisation header was fairly simple.

I couldn’t find this in the documentation tho, so I’d like to share it here so that whenever someone else is struggling to create a similar flow, this could help them.


async create(ctx) {
    const user = ctx.state.user
    
    if (!user) {
        return ctx.unauthorized("Missing credentials for new chat message")
    }

    // Allow requests that miss the data:{} wrapper
    if (!ctx.request.body.data) {
        const tmp = ctx.request.body
        ctx.request.body = {
            data: tmp
        }
    }

    if (!ctx.request.body.data.message) {
        return ctx.unauthorized("Missing required property: `message`")
    }

    ctx.request.body.data.sender = user.id  
    return await super.create(ctx)
},
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