Then you change the constructor to take the name of the table, as well as the names of the fields in the table.
然后，把构造函数修改成接受表的名称和表中字段的名称。
From here you can change any fields in the table that you want in the editor that becomes available.
在这里，可以用编辑器修改表中的任何字段。
First, you must change the fields from individual instance variables to a hash table of field and value pairs.
首先，必须把字段从单个实例变量修改成字段和值组合构成的散列表。
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