For the `Select'of iView, how to set which one is selected by default?

when using iView"s Select selector , there is no default choice. How to solve this problem?

Feb.28,2021

isn't there a v-model

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b31c20-4ea23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b31c20-4ea23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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