Renaming sponsorship level delete its position

[alcalyn]

Current Behavior

When I rename a level, i.e "Level 0" to "Level 0 edited", its position changes. Also, when looking in database, its position is set to null.

How to reproduce scenario

• Go to levels page as admin
• Edit the first level
• Change its label
• Submit

Expected

• When on the level page, I should see the level at the same position it was before
• In database, the level position should not be null

Actual

• Level position is now the last
• I have its position at null

Database dump before and after:

root@1e9417d46674:/var/www/symfony# bin/console doctrine:query:sql "SELECT label, position from sponsorship_level"
array(4) {
  [0]=>
  array(2) {
    ["label"]=>
    string(7) "Level 0"
    ["position"]=>
    int(0)
  }
  [1]=>
  array(2) {
    ["label"]=>
    string(7) "Level 1"
    ["position"]=>
    int(1)
  }
  [2]=>
  array(2) {
    ["label"]=>
    string(7) "Level 2"
    ["position"]=>
    int(2)
  }
  [3]=>
  array(2) {
    ["label"]=>
    string(7) "Level 3"
    ["position"]=>
    int(3)
  }
}
root@1e9417d46674:/var/www/symfony# bin/console doctrine:query:sql "SELECT label, position from sponsorship_level"
array(4) {
  [0]=>
  array(2) {
    ["label"]=>
    string(7) "Level 1"
    ["position"]=>
    int(1)
  }
  [1]=>
  array(2) {
    ["label"]=>
    string(7) "Level 2"
    ["position"]=>
    int(2)
  }
  [2]=>
  array(2) {
    ["label"]=>
    string(7) "Level 3"
    ["position"]=>
    int(3)
  }
  [3]=>
  array(2) {
    ["label"]=>
    string(10) "Level 0 OK"
    ["position"]=>
    NULL
  }
}