Module: GraphSQL::Resolver::CountsByPrimaryKey

Defined in:
lib/graphsql/resolver.rb

Overview

select_columns always applies a multi-column .select() (primary key + every mapped column), which makes a bare .count ambiguous: Rails' default column inference joins every select_value into COUNT(col1, col2, ...), invalid SQL outside Postgres. The primary key is always among those columns and is always a safe, correct thing to count, so a bare .count/.count(&block) defaults to it instead of failing — while .count(:some_column) still passes straight through untouched.

Instance Method Summary collapse

Instance Method Details

#count(column_name = nil, &block) ⇒ Object 



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# File 'lib/graphsql/resolver.rb', line 18

def count(column_name = nil, &block)
  return super if column_name || block

  super(klass.primary_key)
end