Rob Lacey

Brighton, UK - contact@robl.me

Software Engineer working since 2008 with Ruby / Ruby on Rails, love a bit of Elixir / Phoenix. I also poke through other people's code and make PRs for OpenSource Ruby projects that sometimes make it. Currently working at Builder.ai making code out of bricks.


Rails 6.0.4 mangled SQL

Looks like Rails 6.0.4 upgrade has mangled the SQL JSONAPI-Resources is constructing.

Rswag::Specs::UnexpectedResponse:
        Expected response code '500' to match '200'
        Response body: {
          "errors": [
            {
              "title": "Internal Server Error",
              "detail": "Internal Server Error",
              "code": "INTERNAL_SERVER_ERROR",
              "status": "500",
              "meta": {
                "exception": "Mysql2::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.\"id\" AS \"users_id\", users.last_name, users.first_name FROM `users` INNER JOIN `' at line 1",

The backtrace has lead me here.

From: /Users/rl/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/activerecord-6.0.4/lib/active_record/relation/calculations.rb:186 ActiveRecord::Calculations#pluck:

    181: def pluck(*column_names)
    182:   if loaded? && (column_names.map(&:to_s) - @klass.attribute_names - @klass.attribute_aliases.keys).empty?
    183:     return records.pluck(*column_names)
    184:   end
    185: 
 => 186:   binding.pry
    187: 
    188:   if has_include?(column_names.first)
    189:     relation = apply_join_dependency
    190:     relation.pluck(*column_names)
    191:   else
    192:     klass.disallow_raw_sql!(column_names)
    193:     relation = spawn
    194:     relation.select_values = column_names
    195:     result = skip_query_cache_if_necessary { klass.connection.select_all(relation.arel, nil) }
    196:     result.cast_values(klass.attribute_types)
    197:   end
    198: end

[1] pry(#<User::ActiveRecord_Relation>)> column_names
=> ["\"users\".\"id\" AS \"users_id\"", "users.last_name", "users.first_name"]      
        
What’s up with that? Looking.