我正在尝试使用boss_db来访问pgsql。该表应具有列名,id,它应该是主键
Id类型只是uuid或serial。是不是?
我希望id为varchar(20),id的值由程序决定,而不是由DBMS自动决定。有可能吗?
create table operators(
id serial primary key, /*I want id is varchar(20), is it possible*/
tag_id varchar(20),
name text,
barcode varchar(20),
tel varchar(12),
mobile varchar(20),
email text,
ldap_user_id varchar(20),
operator_barcode varchar(20)
);
A = operator:new(id,"0102030405060708",
"operator_01","B001","12345678",
"13812345678",
"p001@gmail.com",
"ldap001",
"PB001"),
以下代码来自boss_sql_lib.erl
文件:
infer_type_from_id(Id) when is_list(Id) ->
[Type, TableId] = re:split(Id, "-", [{return, list}, {parts, 2}]),
TypeAtom = list_to_atom(Type),
IdColumn = proplists:get_value(id, boss_record_lib:database_columns(TypeAtom)),
IdValue = case keytype(Type) of
uuid -> TableId;
serial -> list_to_integer(TableId)
end,
{TypeAtom, boss_record_lib:database_table(TypeAtom), IdColumn, IdValue}.
答案 0 :(得分:1)
使用您自己的ID而不是原子id
创建BossRecord时分配ID:
> AutoId = operator:new(id,
"0102030405060708",
"operator_01","B001","12345678",
"13812345678",
"p001@gmail.com",
"ldap001",
"PB001"),
> ManualID = operator:new("operator-01",
"0102030405060708",
"operator_01","B001","12345678",
"13812345678",
"p001@gmail.com",
"ldap001",
"PB001"),
> AutoID:save(), % will just work
> ManualId:save(). % good luck
记录ID通常由框架创建。它们必须是全球唯一的。我建议允许框架分配自己的ID,而不是手动创建它们,因为您可能会遇到错误。然而,没有什么能阻止你做任何你想做的事。