I can't seem to make tailwind css work with my phoenix/react project

Ok, Now I came to realize that there is an apparent answer.

I have changed the UserMeal Schema to this

  schema "history_user_meals" do
    field :meal_datetime, :utc_datetime
    field :title, :string
    field :user_id, :id

    has_many :recipe_user_meals, RecipeUserMeal, on_replace: :delete

    timestamps()
  end

  @doc false
  def changeset(user_meal, attrs) do
    user_meal
    |> cast(attrs, [:title, :meal_datetime])
    |> cast_assoc(:recipe_user_meals, with: &RecipeUserMeal.changeset/2)
    |> validate_required([:title])
  end

So that the cast_assoc only modifies the middle table and I am just using an additional preloading when returning objects.