class QPersistentModelIndex#

The QPersistentModelIndex class is used to locate data in a data model. More…

Synopsis#

Methods#

def __init__()
def column()
def constInternalPointer()
def data()
def flags()
def internalId()
def internalPointer()
def isValid()
def model()
def __ne__()
def __lt__()
def __eq__()
def parent()
def row()
def sibling()
def swap()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description#

A QPersistentModelIndex is a model index that can be stored by an application, and later used to access information in a model. Unlike the QModelIndex class, it is safe to store a QPersistentModelIndex since the model will ensure that references to items will continue to be valid as long as they can be accessed by the model.

It is good practice to check that persistent model indexes are valid before using them.

Note

You cannot store a QStandardItemModel’s QPersistentModelIndex in one of the model’s items.

See also

QModelIndex QAbstractItemModel

__init__(index)#

Parameters:: index – QModelIndex

Creates a new QPersistentModelIndex that is a copy of the model index.

__init__(other)

Parameters:: other – QPersistentModelIndex

Creates a new QPersistentModelIndex that is a copy of the other persistent model index.

__init__()

column()#

Return type:: int

Returns the column this persistent model index refers to.

constInternalPointer()#

Return type:: void

data([role=Qt.DisplayRole])#

Parameters:: role – int
Return type:: object

Returns the data for the given role for the item referred to by the index.

See also

ItemDataRole setData()

flags()#

Return type:: Combination of ItemFlag

Returns the flags for the item referred to by the index.

internalId()#

Return type:: quintptr

internalPointer()#

Return type:: void

isValid()#

Return type:: bool

Returns true if this persistent model index is valid; otherwise returns false.

A valid index belongs to a model, and has non-negative row and column numbers.

See also

model() row() column()

model()#

Return type:: QAbstractItemModel

Returns the model that the index belongs to.

__ne__(other)#

Parameters:: other – QModelIndex
Return type:: bool

Returns true if this persistent model index does not refer to the same location as the other model index; otherwise returns false.

__ne__(other)

Parameters:: other – QPersistentModelIndex
Return type:: bool

Returns true if this persistent model index is not equal to the other persistent model index; otherwise returns false.

__lt__(other)#

Parameters:: other – QPersistentModelIndex
Return type:: bool

Returns true if this persistent model index is smaller than the other persistent model index; otherwise returns false.

The internal data pointer, row, column, and model values in the persistent model index are used when comparing with another persistent model index.

__eq__(other)#

Parameters:: other – QModelIndex
Return type:: bool

Returns true if this persistent model index refers to the same location as the other model index; otherwise returns false.

The internal data pointer, row, column, and model values in the persistent model index are used when comparing with another model index.

__eq__(other)

Parameters:: other – QPersistentModelIndex
Return type:: bool

Returns true if this persistent model index is equal to the other persistent model index; otherwise returns false.

The internal data pointer, row, column, and model values in the persistent model index are used when comparing with another persistent model index.

parent()#

Return type:: QModelIndex

Returns the parent QModelIndex for this persistent index, or an invalid QModelIndex if it has no parent.

See also

sibling() model()

row()#

Return type:: int

Returns the row this persistent model index refers to.

sibling(row, column)#

Parameters:

row – int
column – int

Return type:

Returns the sibling at row and column or an invalid QModelIndex if there is no sibling at this position.

See also

parent()

swap(other)#

Parameters:: other – QPersistentModelIndex

Swaps this persistent modelindex with other. This function is very fast and never fails.