timestamps()
end
- def get_by_name(name) do
- from(h in Hashtag)
- |> where([h], fragment("name = ?::citext", ^String.downcase(name)))
- |> Repo.one()
+ def normalize_name(name) do
+ name
+ |> String.downcase()
+ |> String.trim()
end
- def get_or_create_by_name(name) when is_bitstring(name) do
- with %Hashtag{} = hashtag <- get_by_name(name) do
- {:ok, hashtag}
- else
- _ ->
- %Hashtag{}
- |> changeset(%{name: name})
- |> Repo.insert()
- end
+ def get_or_create_by_name(name) do
+ changeset = changeset(%Hashtag{}, %{name: name})
+
+ Repo.insert(
+ changeset,
+ on_conflict: [set: [name: get_field(changeset, :name)]],
+ conflict_target: :name,
+ returning: true
+ )
end
def get_or_create_by_names(names) when is_list(names) do
- names = Enum.map(names, &String.downcase/1)
+ names = Enum.map(names, &normalize_name/1)
timestamp = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
structs =
try do
with {:ok, %{query_op: hashtags}} <-
Multi.new()
- |> Multi.insert_all(:insert_all_op, Hashtag, structs, on_conflict: :nothing)
+ |> Multi.insert_all(:insert_all_op, Hashtag, structs,
+ on_conflict: :nothing,
+ conflict_target: :name
+ )
|> Multi.run(:query_op, fn _repo, _changes ->
- {:ok,
- Repo.all(from(ht in Hashtag, where: ht.name in fragment("?::citext[]", ^names)))}
+ {:ok, Repo.all(from(ht in Hashtag, where: ht.name in ^names))}
end)
|> Repo.transaction() do
{:ok, hashtags}
def changeset(%Hashtag{} = struct, params) do
struct
|> cast(params, [:name])
- |> update_change(:name, &String.downcase/1)
+ |> update_change(:name, &normalize_name/1)
|> validate_required([:name])
|> unique_constraint(:name)
end