Ciboulette

Ciboulette

Hi everybody,

I would like to know how can I insert data which can be a Map, String, List, Integer, Float in a jsonb PostgresSQL column ?

PostgreSQL is capable of doing such insertion in a jsonb field. I would like to find a way where Ecto (as an ORM) let me do this. Because currently my field is:

field(:data, :map) and it does not work when I try to insert: "toto" or 12 or [1,2]. And I have no other options, As I do not decide which type of data I’m receiving. Thanks :slight_smile:

Showing Posts 1 to 10

dimitarvp

dimitarvp

You still have to wrap any data you want to persist in a map, like this:

%{string_field: "toto"}
%{integer_field: 12}
%{list_field: [1,2]}

Obviously, replace the field names with what you need.

Ciboulette

Ciboulette OP

It seems not appropriate from my point of view.

dimitarvp

dimitarvp

The DB column declaration says it’s a map, not any random piece of data you can throw at it though.

Can you describe your desired use case?

Ciboulette

Ciboulette OP

It’s an issue from Ecto ORM as it is possible to do it directly through PG method.

The type :json should exist in Ecto.Schema.Type

dimitarvp

dimitarvp

Can you show your table definition in raw SQL?

Ciboulette

Ciboulette OP

dimitarvp

dimitarvp

Interesting. I would guess PostgreSQL automatically wraps things in maps below but I haven’t read up on it.

Thanks for the tidbit.

LostKobrakai

LostKobrakai

You can always create your own. The ecto type is a map type not a json one. In the end ecto is not bound to any db at all and it makes way more sense to have types, which align well to elixir than ones that align well with a certain database.

50kudos

50kudos

I think wrapping into single key shouldn’t affect any business logic.

%{data: "toto"}
%{data: 12}
%{data: [1,2]}

Actually, to avoid struct.data.data just name it jsonb! so you retrieve it struct.data.jsonb .. I think it makes sense.

Eiji

Eiji

@50kudos: ok, now perform jsonb search query on 500_000_000 rows in order to return 1_000_000 rows. Just few lettters, but they would be repeated way too often. It’s not really scalable option. Of course one thing like that would not force 100% server usage, but we should develop best solution and not only working solution.

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