AshPhoenix.Form does not implement the Access behaviour

I'm having this problem when I try to use AshPhoenixForms. I have a liveview with this mount function:

  @impl true
  def mount(_conn, _session, socket) do
    current_merchant = socket.assigns.current_merchant

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant
      )
    {:ok, assign(socket, form: form)}
  end

  @impl true
  def mount(_conn, _session, socket) do
    current_merchant = socket.assigns.current_merchant

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant
      )
    {:ok, assign(socket, form: form)}
  end

But when I try to use in heex template the form with the following code:

      <.simple_form
        for={@form}
        as={:merchant}
        id="merchant-form"
        phx-submit="save"
      >
        <.input field={@form[:company_name]} />
        <:actions>
          <.button phx-disable-with="Saving...">Save Tweet</.button>
        </:actions>
      </.simple_form>
    </div>

      <.simple_form
        for={@form}
        as={:merchant}
        id="merchant-form"
        phx-submit="save"
      >
        <.input field={@form[:company_name]} />
        <:actions>
          <.button phx-disable-with="Saving...">Save Tweet</.button>
        </:actions>
      </.simple_form>
    </div>

I get the following in the picure attached. I can't figure out what I'm doing wrong.

20 Replies

ZachDaniel•3y ago

In the new phoenix versions, it is expected that you will assign the result of calling to_form/1 on the ash form We’ve updated all of the functions to be able to take a phoenix form as input

samooraiOP•3y ago

ok thanks to be clear do I only have to add this?

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant,
        forms: [auto?: true]
      )
    |> to_form()

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant,
        forms: [auto?: true]
      )
    |> to_form()

cause now the form works but it doesn't autopopulate the input fields

ZachDaniel•3y ago

That should be it, yes. What do you mean when you say that it doesn't auto populate the input fields?

samooraiOP•3y ago

The input fields of the form should have the values of the resource in this case the merchant resource

ZachDaniel•3y ago

🤔 AFAIK the to_form/1 shouldn't affect that. Are you using phoenix's builtin components? like the core_components.ex?

samooraiOP•3y ago

Yes I'm using the simple_form and the input components But the fileds are blank Although current_merchant has values

ZachDaniel•3y ago

but not when you do to_form/1?

samooraiOP•3y ago

Yes even when I use that

ZachDaniel•3y ago

So after making the form, try doing AshPhoenix.Form.value(form, :company_name) and see what it says

samooraiOP•3y ago

Ok it returns nil strange tried with some other values and the result is the same maybe I did something wrong it's not the forms fault because current_merchant has nil values I checked now

ZachDaniel•3y ago

strange, but yeah in that case likely something in the way current_merchant is set

samooraiOP•3y ago

It's set by ash auth beacuse merchant is a user What I could do is query the database for the merchant but seems a waste Maybe there is a better way But right now I can't think of anything

ZachDaniel•3y ago

🤔 Ash auth should select everything by default

samooraiOP•3y ago

now I'm at the point where current_merchant has the values but doing AshPhoenix.Form.value returns nil

IO.inspect(current_merchant)
...
#Newco.Accounts.Merchant<
  __meta__: #Ecto.Schema.Metadata<:loaded, "merchants">,
  id: "1b450443-ed8c-4b1e-ad23-8a9a70d9983c",
  email: #Ash.CiString<"[email protected]">,
  company_name: nil,
  first_name: "Porco dio",
  last_name: "sdf",
  address: nil,
...

IO.inspect(current_merchant)
...
#Newco.Accounts.Merchant<
  __meta__: #Ecto.Schema.Metadata<:loaded, "merchants">,
  id: "1b450443-ed8c-4b1e-ad23-8a9a70d9983c",
  email: #Ash.CiString<"[email protected]">,
  company_name: nil,
  first_name: "Porco dio",
  last_name: "sdf",
  address: nil,
...

    IO.inspect(AshPhoenix.Form.value(form, :first_name))

    IO.inspect(AshPhoenix.Form.value(form, :first_name))

nil

nil

should return Porco dio the complete mount code is:

  @impl true
  def mount(_conn, _session, socket) do
    current_merchant = socket.assigns.current_merchant
    IO.inspect(current_merchant)

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant,
        forms: [auto?: true]
      )
    |> to_form()

    IO.inspect(AshPhoenix.Form.value(form, :first_name))


    {:ok, assign(socket, form: form)}
  end

  @impl true
  def mount(_conn, _session, socket) do
    current_merchant = socket.assigns.current_merchant
    IO.inspect(current_merchant)

    form =
      AshPhoenix.Form.for_action(current_merchant, :update_details,
        as: "merchant",
        api: Newco.Accounts,
        actor: current_merchant,
        forms: [auto?: true]
      )
    |> to_form()

    IO.inspect(AshPhoenix.Form.value(form, :first_name))


    {:ok, assign(socket, form: form)}
  end

very strange It's driving me insane I tried with other fields and with another merchant but the result is the same nil

ZachDaniel•3y ago

Is :update_details an update action in the resource? What does form.source.type say

samooraiOP•3y ago

yes it is defined like so:

    update :update_details do
      accept [
        :company_name,
        :address,
        :first_name,
        :last_name,
        :zip_code,
        :city,
        :fiscal_code,
        :vat,
        :phone,
        :sdi,
        :pec
      ]

      change set_new_attribute(:company_name, arg(:company_name))
      change set_new_attribute(:address, arg(:address))
      change set_new_attribute(:first_name, arg(:first_name))
      change set_new_attribute(:last_name, arg(:last_name))
      change set_new_attribute(:zip_code, arg(:zip_code))
      change set_new_attribute(:city, arg(:city))
      change set_new_attribute(:fiscal_code, arg(:fiscal_code))
      change set_new_attribute(:vat, arg(:vat))
      change set_new_attribute(:phone, arg(:phone))
      change set_new_attribute(:sdi, arg(:sdi))
      change set_new_attribute(:pec, arg(:pec))
    end

    update :update_details do
      accept [
        :company_name,
        :address,
        :first_name,
        :last_name,
        :zip_code,
        :city,
        :fiscal_code,
        :vat,
        :phone,
        :sdi,
        :pec
      ]

      change set_new_attribute(:company_name, arg(:company_name))
      change set_new_attribute(:address, arg(:address))
      change set_new_attribute(:first_name, arg(:first_name))
      change set_new_attribute(:last_name, arg(:last_name))
      change set_new_attribute(:zip_code, arg(:zip_code))
      change set_new_attribute(:city, arg(:city))
      change set_new_attribute(:fiscal_code, arg(:fiscal_code))
      change set_new_attribute(:vat, arg(:vat))
      change set_new_attribute(:phone, arg(:phone))
      change set_new_attribute(:sdi, arg(:sdi))
      change set_new_attribute(:pec, arg(:pec))
    end

it says :update

ZachDaniel•3y ago

Hmm…what happens if you take this set_new_attribute calls out?

samooraiOP•3y ago

okay that was the problem now works I think I didn't understand change corretly in this case it is not needed to explicitly set change (?)

ZachDaniel•3y ago

Yeah, so all public attributes are accepted by defaults You don’t need to ferry them through with arguments accept [:foo, :bar, :baz] let’s you control which attributes are accepted

samooraiOP•3y ago

oh I see understood thanks a lot

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AshPhoenix.Form does not implement the Access behaviour

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