sahilpaudel

sahilpaudel

I want to get just the id and name from the object the rest of the data are irrelevant to me.
Can you pleas help me how to go about that.

def call(param) do
    System.get_env("LOCATION_SERVICE_HOST") <> param
      |> HttpClient.get
      |> format_response
end

def format_response({ok, response}) do
    response
 end

The response of call function

[
    {
        "countryCode": "IN",
        "courierApplicable": false,
        "id": 1,
        "isActive": true,
        "name": "",
        "stateId": 5,
        "supplierCityId": 1
    },
    {
        "countryCode": "IN",
        "courierApplicable": false,
        "id": 2,
        "isActive": true,
        "name": "",
        "stateId": 1,
    },
  ...
]

Expected result

[
    {
        "id": 1,
        "name": ""
    },
    {
        "id": 2,
        "name": ""
    },
  ...
]

Showing Posts 1 to 5

benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

What have you tried so far?

sahilpaudel

sahilpaudel OP

I don’t know where to start

I tried this but obviously it failed

 def format_response({ok, response}) do
    response
      |> Enum.flat_map(fn params -> show(params) end)
 end

  def show(%{"id" => id, "name" => name}) do
    %{
      id: id,
      name: name
    }
  end
kokolegorille

kokolegorille

When it fails, You should always include error messages.

Also, it looks like a list of map, but You use it with tuple syntax.

Why Enum.flat_map? Enum.map should do the trick as well.

sahilpaudel

sahilpaudel OP

|> Enum.map(fn x -> %{id: x.id, name: x.name} end)

This seems to have worked

kokolegorille

kokolegorille

This would have worked too

|> Enum.map(& %{id: &1.id, name: &1.name})

BTW “id” is not equal to id:, but the working code uses :id…

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