Current section
Files
Jump to
Current section
Files
lib/exzeitable/validation.ex
defmodule Exzeitable.Validation do
@moduledoc "Using these instead of Keyword.fetch! to provide nice easily resolvable errors."
@doc "The required options"
@spec required_options(map) :: map | nil
def required_options(session) do
%{
"repo" => repo,
"query" => query,
"routes" => routes,
"path" => path
} = session
cond do
repo == nil ->
raise "You need to set the repo, i.e. MyApp.Repo"
query == nil ->
raise "You need to set the query, i.e. from(s in Site, select: [:id, :number, :address])"
routes == nil ->
raise "You need to set the routes module, i.e. MyAppWeb.Router.Helpers"
path == nil ->
raise "You need to set the path, i.e. :user_path"
true ->
session
end
end
@doc "If you have parent then you need belongs_to, and vice versa."
@spec paired_options(map) :: map | nil
def paired_options(%{"parent" => parent, "belongs_to" => belongs_to} = session) do
cond do
parent == nil && belongs_to != nil ->
raise "[:parent] record needs to be defined if belongs_to is defined, i.e. Repo.find(site.id)"
parent != nil && belongs_to == nil ->
raise "[:belongs_to] needs to be defined if parent is defined, i.e. :site"
true ->
session
end
end
end