Strict Mode error when attempting to programmatically delete a relation field element

Questions and Answers
3

@Dmehaffy, thanks for your feedback. I followed the Strapi controller docs and after playing around with many different iterations of the code below, I’m still stuck.

`const { parseMultipartData, sanitizeEntity } = require(“strapi-utils”);

module.exports = {

async update(ctx) {
const { id } = ctx.params;
const { user } = ctx.state;

let entity;
if (ctx.is("multipart")) {
  const { data, files } = parseMultipartData(ctx);
  entity = await strapi.services.product.update({ id }, data, {
    files,
  });
} else {
  // return id; = 5fa47483e87eddaad31766c6 from const { id } = ctx.params;
  entity = await strapi.services.product
    .update({ id }, ctx.request.body, {
      $pull: {
        userCarts: {
          _id: "5f832758ef13ed4f801c8937",
        },
      },
    })
}
return sanitizeEntity(entity, { model: strapi.models.product });

}
}`

My product is returned but the userCarts item is not deleted.

I also tested code that was suggested on Strapi’s Slack channel by replacing:
entity = await strapi.services.product.update(

with

entity = await strapi.query("product").model.updateOne(

No joy on that code change, either.

Mongoose $pull seems to have a history of issues related to not working. From what I’ve read, it essentially depends on “_id”, though some have had success using other fields as target values. “_id” is my target value for userCarts.

Does Strapi have its own implementation for $pull?

Thoughts?

Thanks… Jim