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0.1.0
The PostgreSQL data layer for Ash Framework
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Files
lib/custom_index.ex
defmodule AshPostgres.CustomIndex do
@moduledoc false
@fields [
:table,
:fields,
:name,
:unique,
:concurrently,
:using,
:prefix,
:where,
:include,
:message
]
defstruct @fields
def fields, do: @fields
@schema [
fields: [
type: {:list, {:or, [:atom, :string]}},
doc: "The fields to include in the index."
],
name: [
type: :string,
doc: "the name of the index. Defaults to \"\#\{table\}_\#\{column\}_index\"."
],
unique: [
type: :boolean,
doc: "indicates whether the index should be unique.",
default: false
],
concurrently: [
type: :boolean,
doc: "indicates whether the index should be created/dropped concurrently.",
default: false
],
using: [
type: :string,
doc: "configures the index type."
],
prefix: [
type: :string,
doc: "specify an optional prefix for the index."
],
where: [
type: :string,
doc: "specify conditions for a partial index."
],
message: [
type: :string,
doc: "A custom message to use for unique indexes that have been violated"
],
include: [
type: {:list, :string},
doc:
"specify fields for a covering index. This is not supported by all databases. For more information on PostgreSQL support, please read the official docs."
]
]
def schema, do: @schema
# sobelow_skip ["DOS.StringToAtom"]
def transform(%__MODULE__{fields: fields} = index) do
{:ok,
%{
index
| fields:
Enum.map(fields, fn field ->
if is_atom(field) do
field
else
String.to_atom(field)
end
end)
}}
end
def name(_resource, %{name: name}) when is_binary(name) do
name
end
# sobelow_skip ["DOS.StringToAtom"]
def name(table, %{fields: fields}) do
[table, fields, "index"]
|> List.flatten()
|> Enum.map(&to_string(&1))
|> Enum.map(&String.replace(&1, ~r"[^\w_]", "_"))
|> Enum.map_join("_", &String.replace_trailing(&1, "_", ""))
|> String.to_atom()
end
end