Javascript angularJS使用Json数据填充Select并选择所选值

我有两个实体。项目和项目类型。 一个项目有一个或多个项目类型

通过ajax（nginit）我获得了项目数据（以及该项目的相关项目类型） 以及所有项目类型（用于为项目选择一个或多个项目类型）：

所以在{{project}}范围内有一个json：

{"id":1,"slug":"test","active":1,"name":"Test","description":"dgdgdgdg","from":"2015-12-22 00:00:00","to":"2015-12-22 00:00:00","created_by":1,"updated_by":1,"created_at":"2015-12-22 12:08:47","updated_at":"2015-12-22 12:08:47","deleted_at":null,"from_date_time":"22.12.2015","to_date_time":"22.12.2015","formatted_description":"dgdgdgdg","users":[],"project_types":[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null,"pivot":{"project_id":1,"project_type_id":4,"created_at":"2015-12-22 13:13:12","updated_at":"2015-12-22 13:13:12"}}]}

[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null},{"id":5,"slug":"sfsfsfsfsfsfsfsfsfsf","active":1,"name":"sfsfsfsfsfsfsfsfsfsf","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:50:23","updated_at":"2015-12-22 09:50:23","deleted_at":null},{"id":6,"slug":"eteett","active":1,"name":"eteett","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 10:07:55","updated_at":"2015-12-22 10:07:55","deleted_at":null},{"id":7,"slug":"sfssfsf","active":1,"name":"sfssfsf","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 12:36:37","updated_at":"2015-12-22 12:36:37","deleted_at":null}]

[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null,"pivot":{"project_id":1,"project_type_id":4,"created_at":"2015-12-22 13:13:12","updated_at":"2015-12-22 13:13:12"}}]

在{{project_types}}范围内有一个json：

{"id":1,"slug":"test","active":1,"name":"Test","description":"dgdgdgdg","from":"2015-12-22 00:00:00","to":"2015-12-22 00:00:00","created_by":1,"updated_by":1,"created_at":"2015-12-22 12:08:47","updated_at":"2015-12-22 12:08:47","deleted_at":null,"from_date_time":"22.12.2015","to_date_time":"22.12.2015","formatted_description":"dgdgdgdg","users":[],"project_types":[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null,"pivot":{"project_id":1,"project_type_id":4,"created_at":"2015-12-22 13:13:12","updated_at":"2015-12-22 13:13:12"}}]}

[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null},{"id":5,"slug":"sfsfsfsfsfsfsfsfsfsf","active":1,"name":"sfsfsfsfsfsfsfsfsfsf","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:50:23","updated_at":"2015-12-22 09:50:23","deleted_at":null},{"id":6,"slug":"eteett","active":1,"name":"eteett","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 10:07:55","updated_at":"2015-12-22 10:07:55","deleted_at":null},{"id":7,"slug":"sfssfsf","active":1,"name":"sfssfsf","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 12:36:37","updated_at":"2015-12-22 12:36:37","deleted_at":null}]

[{"id":4,"slug":"event","active":1,"name":"Event","description":"","created_by":0,"updated_by":0,"created_at":"2015-12-22 09:49:43","updated_at":"2015-12-22 09:49:43","deleted_at":null,"pivot":{"project_id":1,"project_type_id":4,"created_at":"2015-12-22 13:13:12","updated_at":"2015-12-22 13:13:12"}}]

在我的html中，我创建了选择（多个）字段：

我不能让它工作。。。“我的选择”字段中不会默认选择任何值

谢谢你把我推向正确的方向

您是否尝试添加“跟踪方式”

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如果您有一个可用的代码片段或小提琴，帮助会更容易。

您能创建一个小提琴吗jsfiddle.net查看“跟踪方式”上的文档