Cannot read PG::{type}Array

will / crystal-pg

a postgres driver for crystal

BSD 3-Clause "New" or "Revised" License

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Closed vladfaust closed 6 years ago

vladfaust commented 6 years ago

Hello,

require "db"
require "pg"

db = DB.open(ENV["DATABASE_URL"])
db.query("SELECT '{1,2}'") do |rs|
  values = rs.read(PG::Int16Array)
end

in lib/pg/src/pg/result_set.cr:98: undefined constant T

  def read(t : Array(T)?.class) : Array(T)? forall T
                     ^

I suppose the issue is in this recursive alias:

/cc @will @asterite

vladfaust commented 6 years ago

Ah, so noone should read raw PG::{Type}Array. read(Array(Int16)) works as expected.