I’m trying to figure out how to use cast_embed but I don’t understand what I’m doing wrong. defmodule Operation do use Ecto.Schema embedded_schema do field :amount, :integer field :type, :string embeds_one :item, Item end end defmodule Item do use Ecto.Schema embedded_schem…

Take a look at the documentation for cast_embed Specifically, note the :with option which states :with - the function to build the changeset from params. Defaults to the changeset/2 function in the embed module Basically, when you call cast_embed, it implicitly calls Item.changeset/2, but since…

Thanks, can you give an example of how that would be done with my above structs? I’m still trying to get it working but frustratingly just getting errors…

This post is a cast_assoc example but should apply to cast_embed. Check it out: [image] Handling nested associations with cast_assoc Questions / Help Hi everyone, I finally had a bit of time to followup on this post: Best way to handle associations in single html form I…

you want something like defmodule Item do use Ecto.Schema embedded_schema do field :item_code, :string field :item_name, :string end def changeset(schema, params) do schema |> cast(params, [:item_code, :item_name]) end end

Many thanks, that helped immensely and I get the gist of how it works now!

How do I use Ecto cast_embed correctly on this Map?

Questions & Help Questions

joaquinalcerro June 1, 2018, 6:48pm 4

This post is a cast_assoc example but should apply to cast_embed. Check it out:

Best regards,