Using AshPhoenix.Form to update embedded resource

Questions & Help Questions
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1

I am unsure if this is the best way to present my issue. I have an embedded resource that I am trying to update via the AshPhoenix.Form.

  • Domain = Accounts
  • Resource = Organization
  • Embedded Resource = Config

get an organization resource

organization = Community.Accounts.get_organization_by_domain_slug!(“testinc-com”)

create an organization form

organization_form = Community.Accounts.form_to_update_organization(organization)

create an organization embedded “config” form

config_form_update = Community.Accounts.form_to_update_organization_config(organization)

favicon is the property to be updated

params = %{favicon: “https://www.testinc.com/images/favicon.ico”}

validate the form with the update and submit

submitted_config_form_update = config_form_update
|> AshPhoenix.Form.validate(params)
|> AshPhoenix.Form.submit!(params: params)

the ‘config’ favicon is updated correctly in the embedded ‘config’

iex(54)> submitted_config_form_update
%Community.Accounts.Config{
logo: “https://www.testinc.com/images/logo.svg”,
favicon: “https://www.testinc.com/images/favicon.ico”,
status: :setup,
supported_languages: [“en”],
supported_email_domains: [“testinc.com”],
meta: ###Ecto.Schema.Metadata<:built, “”>
}

update config in the organization resource

output = AshPhoenix.Form.submit!(organization_form, params: %{config: submitted_config_form_update})

unhappy face here

the favicon is not updated

iex(55)> output
%Community.Accounts.Organization{
id: “622032a8-8d7c-48ce-acf7-c946685e2a2f”,
name: “Test Inc.”,
url: “https://www.testinc.com”,
domain: “testinc.com”,
domain_slug: “testinc-com”,
status: :signed_up,
config: %Community.Accounts.Config{
logo: “https://www.testinc.com/images/logo.svg”,
favicon: nil,
status: :setup,
supported_languages: [“en”],
supported_email_domains: [“testinc.com”],
meta: #Ecto.Schema.Metadata<:built, “”>
},
organization_config_hash: “4b79239bf82e36870f0d2b640f911dcdbd7b7942ff2eb641c625c9642a99877e”,
inserted_at: ~U[2025-07-24 14:16:19.714496Z],
updated_at: ~U[2025-07-24 20:54:22.441046Z],
meta: #Ecto.Schema.Metadata<:loaded, “organizations”>
}

2

Found it! It isn’t calling the update action I thought it was and the one it is calling didn’t have “:config” in the accept.

3

Also you can skip the validate call if the next call is submit. Submit will automatically call validate.

4

Thanks good to know!!

5

New question on this topic. Is there a way to tell the AshPhoenix.Form.submit function to call a specific action? I see there is an “:action_opts” but I have not found an example of how to use it or more specifically what it does.

6

You choose the action when you create the form, i.e AshPhoenix.Form.for_create(...) or when using a form code interface.

7

That is what I thought should be happening but the call to “Accounts.form_to_update_organization_config(organization)” gives me a Form/Changeset for the embedded resource, which I thought was correct to allow validation of the embedded subform.

# get an organization resource
organization = Community.Accounts.get_organization_by_domain_slug!("testinc-com")
# get config_update form
config_update_form = Community.Accounts.form_to_update_organization_config(organization)
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

domain code

  resources do
    resource Community.Accounts.Organization do
      define :create_organization, action: :create_organization
      define :update_organization, action: :update_organization
      define :read_organizations, action: :read
      define :get_organization_by_domain_slug, action: :read, get_by: :domain_slug
      define :get_organization_by_id, action: :read, get_by: :id
      define :destroy_organization, action: :destroy_organization

      # embedded config schema
      define :update_organization_config, action: :update_organization_config
    end

resource code

defmodule Community.Accounts.Organization do
...
  actions do
    ...
    update :update_organization do
      accept [:name, :url, :config]         # i had to add :config here to make it work 
      require_atomic? false
    end

    update :update_organization_config do   # i thought this would be called
      accept [:config]
      require_atomic? false
    end

    destroy :destroy_organization do
    end
  end
  ...
8

:thinking: I’m not sure I understand what you’re looking to do unfortunately. form_to_update_organization_config would be giving you a form for this action: :update_organization_config on :organization. Are you looking to customize the action used on the embedded resource? Might need to see a more complete example to help.