QSqlRelation

The QSqlRelation class stores information about an SQL foreign key. More…

Synopsis

Functions

• def displayColumn ()

• def indexColumn ()

• def isValid ()

• def swap (other)

• def tableName ()

Detailed Description

QSqlRelation is a helper class for QSqlRelationalTableModel . See setRelation() and relation() for details.

See also

QSqlRelationalTableModel QSqlRelationalDelegate Relational Table Model Example

class QSqlRelation

QSqlRelation(QSqlRelation)

QSqlRelation(aTableName, indexCol, displayCol)

param QSqlRelation

QSqlRelation

param aTableName

unicode

param indexCol

unicode

param displayCol

unicode

Constructs an invalid QSqlRelation object.

For such an object, the tableName() , indexColumn() , and displayColumn() functions return an empty string.

See also

isValid()

Constructs a 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.

See also

tableName() indexColumn() displayColumn()

PySide2.QtSql.QSqlRelation.displayColumn()

Return type

unicode

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

PySide2.QtSql.QSqlRelation.indexColumn()

Return type

unicode

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

PySide2.QtSql.QSqlRelation.isValid()

Return type

bool

Returns true if the QSqlRelation object is valid; otherwise returns false .

PySide2.QtSql.QSqlRelation.swap(other)

Parameters

other – QSqlRelation

Swaps this with other .

PySide2.QtSql.QSqlRelation.tableName()

Return type

unicode

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