Not Existing Property

If you get the following error in your Medusa application's terminal:

Trying to query by not existing property LinkModel.X.

Where X is the name of a data model. For example, LinkModel.cart.

Why this Error Occurred

This error occurs when you're using Query and you're trying to filter by a linked module, which isn't allowed.

For example, assuming you have a Post data model and you linked it to the Cart data model, this isn't allowed:

const { data } = await query.graph({
  entity: "post",
  fields: ["*"],
  filter: {
    cart: {
      id: "cart_123",
    },
  },
})

You can't filter your custom post data model by the ID of their linked cart.

How to Fix it

You need to query the link's table directly and apply the filters on its ID columns. For example:

import PostCartLink from "../links/post-cart"

// ...

const { data } = await query.graph({
  entity: PostCartLink.entryPoint,
  fields: ["post.*", "cart.*"],
  filters: {
    cart_id: "cart_123",
  },
})

In the above example, you query the PostCartLink data model directly and apply the filters to the cart_id field, which holds the ID of the cart linked to the post. You'll then only retrieve the posts linked to the cart with the ID cart_123.

Additional Resources

• Query