django使用search_fields報錯（in get_lookup_constraint）
FieldError at /api/workorder/order/
Related Field got invalid lookup: icontains
| Request Method: | GET |
|---|---|
| Request URL: | http://127.0.0.1:8000/api/workorder/order/?search=1 |
| Django Version: | 2.0 |
| Exception Type: | FieldError |
| Exception Value: | Related Field got invalid lookup: icontains |
| Exception Location: | C:\Users\WM\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\models\sql\query.py in build_lookup, line 1075 |
| Python Executable: | C:\Users\WM\AppData\Local\Programs\Python\Python36\python.exe |
| Python Version: | 3.6.5 |
| Python Path: | ['F:\git_code\emergency_itil\EmergencyResponse', 'F:\git_code\emergency_itil\EmergencyResponse', 'E:\PyCharm 2019.1.1\helpers\pycharm_display', 'C:\Users\WM\AppData\Local\Programs\Python\Python36\python36.zip', 'C:\Users\WM\AppData\Local\Programs\Python\Python36\DLLs', 'C:\Users\WM\AppData\Local\Programs\Python\Python36\lib', 'C:\Users\WM\AppData\Local\Programs\Python\Python36', 'C:\Users\WM\AppData\Roaming\Python\Python36\site-packages', 'C:\Users\WM\AppData\Local\Programs\Python\Python36\lib\site-packages', 'E:\PyCharm 2019.1.1\helpers\pycharm_matplotlib_backend'] |
| Server time: | 星期一, 22 七月 2019 21:07:21 +0800 |
異常原因：
search_fields = ('content', 'detail','submitter')
這是在view中模糊查詢的字段，其中submitter字段是一個外鍵ForeignKey字段，而作為一個外鍵，它所對應的不是一個具體的字段，而是一個類。
所以我們應該將其對應成為一個外鍵關聯的摸一個具體的字段，如submitter__username
search_fields = ('content', 'detail','submitter__username')