Question

Is there a way to handle table name and field name at run time ?

I have found references to an insert method that takes a dict as argument But assuming rd is a dict with 10 entries, key = name of the field, value = value to be inserted, the following code will fail

    db.OrdersFull.insert(rd)

With error :TypeError: insert() takes exactly 1 argument (2 given)
1)any clue?
2)with this solution, the table name (OrdersFull) must still be known at development time, any way to insert into a table whose name is known at run time only ?
3)Is there a place where one can found reference information for available web2py API calls ?

Answer 1

要访问基于产生其名称的Python表达式的表，您可以执行以下操作：

tablename = 'mytable'
db[tablename]

已记录在here中。

要将字典与.insert()方法一起使用，可以使用标准的Python关键字参数解包：

db[tablename].insert(**mydict)

这不是特定于web2py或DAL，而是标准的Python语法。

还有一种特殊的方法可用于过滤字典中不是表中字段的任何项目：

db.mytable.insert(**db.mytable._filter_fields(mydict))

如果要传递先前从表中选择的记录，则上述内容很有用，因为它会自动从记录中过滤出id字段（您不想指定{{1} }插入，因为数据库将自动创建一个。）

关于API参考，除了book之外，还有this API documentation。

web2py insert with variable table and field name e.g. with dict

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