我设法制作了一个链式下拉列表，但我不能让它们具有初始值。我正在做这样的事情：
<select ng-model="check" ng-options="check.name for check in checks"></select>
<select ng-show="check.params" ng-model="parameter" ng-options="p.name for p in check.params"></select>
以下是单次检查的示例：
[0] => Array
(
[id] => 1
[name] => existing_client
[params] => Array
(
[0] => Array
(
[id] => 3
[name] => IsEnabled
[type] => boolean
[check_id] => 1
)
[1] => Array
(
[id] => 18
[name] => country
[type] => country_comparison
[check_id] => 1
)
[2] => Array
(
[id] => 19
[name] => affiliate_id
[type] => string_comparison
[check_id] => 1
)
[3] => Array
(
[id] => 14
[name] => created_at
[type] => date
[check_id] => 1
)
[4] => Array
(
[id] => 15
[name] => muid
[type] => string_comparison
[check_id] => 1
)
[5] => Array
(
[id] => 20
[name] => region
[type] => string_comparison
[check_id] => 1
)
[6] => Array
(
[id] => 24
[name] => created_at_interval
[type] => interval
[check_id] => 1
)
)
)