Enumerable not implemented for when rendering

Phoenix Forum Questions / Help
,
4

Ecto has already shown you that you can - reformatting from your post:

SELECT
  r0."id",
  r0."name",
  r0."topic",
  r0."inserted_at",
  r0."updated_at",
  u1."id"
FROM
  "rooms" AS r0
  INNER JOIN "users" AS u1 ON u1."id" = ANY($1)
  INNER JOIN "user_rooms" AS u2 ON u2."user_id" = u1."id"
WHERE
  (u2."room_id" = r0."id")
ORDER BY u1."id" [[10]]

or

SELECT
  rooms.*
FROM
  rooms
  INNER JOIN users ON users.id = :user_id
  INNER JOIN user_rooms ON user_rooms.user_id = users.id
WHERE
  user_rooms.room_id = rooms.id
ORDER BY
  users.id

I think it would be worth your time to go through something like http://www.postgresqltutorial.com/

There seems to be the notion that you can use Ecto without knowing SQL (in general) but my observation has been that not knowing SQL makes using Ecto effectively that much more difficult.

Ecto makes a lot more sense once you know SQL.

Programming Ecto (Beta 4) - Introduction, p. x

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