Delete selected values

Phoenix Forum Questions / Help
,
1

I pasted the values in csv file and in select. How can I delete the selected values from select?
Here’s the code
contact.ex:

schema "contacts" do
field :iban, :string: 
timestamps()
  end

def changeset(contact, attrs) do
    contact
    |> cast(attrs, [:iban]) end

contact_view.ex:

 def random_index(list) do
    :rand.seed(:erlang.now())
    Enum.random(0..length(list) - 1)
   end
def random_iban(assigned_iban) do
ibans = File.stream!("priv/data/virtuelleskonto.csv") |> Enum.to_list()
index = random_index(ibans)
case List.delete_at(ibans, assigned_iban) do
       {iban, _rest} ->
        {iban, ibans}
      _ ->
        random_iban(assigned_iban)
      end
     end

form.html.heex:

<div class="col">
      <%= label(f, :iban, "IBAN", class: "form-label") %>
      <%= select(f, :iban, random_iban(f.object.iban) ,
          prompt: "Wählen Sie ein Konto",
          class: "form-select") %>
      <%= error_tag(f, :iban) %>
    </div>

Can anyone help me?

2

hello.

it’s super hard to read the code, can you please format it? use the 3 backticks: ```.

1 Like
3

What do you mean by that?

4

after I select a value from list, I want to delete this value, because only need to use a value once.