Create Helper Functions that Check for Role

[nelsonic]

Todo

• Create helper functions that can be used in any app that uses auth_plug for auth,
  that check if the given person has a specific role e.g.
  • RBAC.has_role/2 - check if the person has the required role.

[nelsonic]

I've got the has_role/2 function working: #7

rbac/lib/rbac.ex

Lines 117 to 126 in 0aa6124

	def has_role(conn, role_name) do
	role = get_role_from_cache(role_name)
	person_roles =
	conn.assigns.person.roles
	|> String.split(",", trim: true)
	|> Enum.map(&String.to_integer/1)
	Enum.member?(person_roles, role.id)
	end

Just need to document everything and can assign the PR. ⏳

[nelsonic]

Created has_role_any?/2 function to check for multiple roles at once:

rbac/lib/rbac.ex

Lines 135 to 152 in 7dcab44

	def has_role_any?(conn, roles_list) do
	list_ids = Enum.map(roles_list, fn role ->
	r = get_role_from_cache(role)
	r.id
	end)
	# list of integers
	person_roles =
	conn.assigns.person.roles
	|> String.split(",", trim: true)
	|> Enum.map(&String.to_integer/1)
	# find the first occurence of a role by id:
	found = Enum.find(person_roles, fn rid ->
	Enum.member?(list_ids, rid)
	end)
	not is_nil(found)
	end

I know this code isn't pretty.
Very happy for anyone else to refactor this.

[nelsonic]

The helper functions are included in #7