Tp5 model save and create, tp5 model savecreate

Tp5 model save and create, tp5 model savecreate

In the past, the method for inserting a model into a database in tp3.2 usually uses add

At the beginning of tp5, I found that both the save and create methods can insert data.

I don't know what the difference is. I usually use the create method later.

At last, when I joined the table, no primary key is returned because I used create.

As a result, another field in the joined table is not written to the called instance.

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