QSqlRelation ¶

概要 ¶

详细描述 ¶

class PySide.QtSql. QSqlRelation ¶

class PySide.QtSql. QSqlRelation ( QSqlRelation )

class PySide.QtSql. QSqlRelation ( aTableName , indexCol , displayCol )

参数：	aTableName – unicode displayCol – unicode indexCol – unicode QSqlRelation – PySide.QtSql.QSqlRelation

Constructs an invalid PySide.QtSql.QSqlRelation 对象。

For such an object, the PySide.QtSql.QSqlRelation.tableName() , PySide.QtSql.QSqlRelation.indexColumn() ，和 PySide.QtSql.QSqlRelation.displayColumn() functions return an empty string.

另请参阅

PySide.QtSql.QSqlRelation.isValid()

构造 PySide.QtSql.QSqlRelation object, where tableName is the SQL table name to which a foreign key refers, indexColumn is the foreign key, and displayColumn is the field that should be presented to the user.

另请参阅

PySide.QtSql.QSqlRelation.tableName() PySide.QtSql.QSqlRelation.indexColumn() PySide.QtSql.QSqlRelation.displayColumn()

PySide.QtSql.QSqlRelation. displayColumn ( ) ¶

返回类型：	unicode

Returns the column from table PySide.QtSql.QSqlRelation.tableName() that should be presented to the user instead of a foreign key.

PySide.QtSql.QSqlRelation. indexColumn ( ) ¶

返回类型：	unicode

Returns the index column from table PySide.QtSql.QSqlRelation.tableName() to which a foreign key refers.

PySide.QtSql.QSqlRelation. isValid ( ) ¶

返回类型：	PySide.QtCore.bool

返回 true 若 PySide.QtSql.QSqlRelation object is valid; otherwise returns false.

PySide.QtSql.QSqlRelation. tableName ( ) ¶

返回类型：	unicode

Returns the name of the table to which a foreign key refers.