How to set Limit of a relation

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6

@Devarshivaidya I think the code you want to get maybe like under:

const { createCoreController } = require('@strapi/strapi').factories;

module.exports = createCoreController('api::article.article',
  ({ strapi }) => ({
    async create(ctx) {

      const response = await strapi.service('api::article.article').find({
        filters: {
          user: {   // this filter linked user, you also can use createdBy
            id: ctx.state.user.id
          }
        }
      }).then(
        res => {
          if (res.results.length >= 3) {
            return "You have already created 3 article"
          }
        }
      )

      // if not great than 3, then create article, if true return the message
      const finalRes = response ?? super.create(ctx)

      return finalRes
    }
  })
);

you can find here and run online
GavinXue/strapi-study-cases: strapi use cases when study, maybe it can help someone else.

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