Package django :: Package db :: Package models :: Module query :: Class _QuerySet

Class _QuerySet

object --+
         |
        _QuerySet

Represents a lazy database lookup for a set of objects

Instance Methods

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__init__(self, model=None)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

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__repr__(self)
repr(x)

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__len__(self)

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__iter__(self)

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__getitem__(self, k)
Retrieve an item or slice from the set of results.

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__and__(self, other)

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__or__(self, other)

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iterator(self)
Performs the SELECT database lookup of this QuerySet.

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count(self)
Performs a SELECT COUNT() and returns the number of records as an integer.

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get(self, *args, **kwargs)
Performs the SELECT and returns a single object matching the given keyword arguments.

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create(self, **kwargs)
Create a new object with the given kwargs, saving it to the database and returning the created object.

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get_or_create(self, **kwargs)
Looks up an object with the given kwargs, creating one if necessary.

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latest(self, field_name=None)
Returns the latest object, according to the model's 'get_latest_by' option or optional given field_name.

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in_bulk(self, id_list)
Returns a dictionary mapping each of the given IDs to the object with that ID.

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delete(self)
Deletes the records in the current QuerySet.

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values(self, *fields)

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dates(self, field_name, kind, order='ASC')
Returns a list of datetime objects representing all available dates for the given field_name, scoped to 'kind'.

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filter(self, *args, **kwargs)
Returns a new QuerySet instance with the args ANDed to the existing set.

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exclude(self, *args, **kwargs)
Returns a new QuerySet instance with NOT (args) ANDed to the existing set.

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_filter_or_exclude(self, mapper, *args, **kwargs)

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complex_filter(self, filter_obj)
Returns a new QuerySet instance with filter_obj added to the filters.

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select_related(self, true_or_false=True, depth=0)
Returns a new QuerySet instance with '_select_related' modified.

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order_by(self, *field_names)
Returns a new QuerySet instance with the ordering changed.

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distinct(self, true_or_false=True)
Returns a new QuerySet instance with '_distinct' modified.

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extra(self, select=None, where=None, params=None, tables=None)

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_clone(self, klass=None, **kwargs)

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_combine(self, other)

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_get_data(self)

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_get_sql_clause(self)

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Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, model=None)
(Constructor)

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x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__: (inherited documentation)

repr(self)
(Representation operator)

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repr(x)

Overrides: object.__repr__: (inherited documentation)

count(self)

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Performs a SELECT COUNT() and returns the number of records as an integer.

If the queryset is already cached (i.e. self._result_cache is set) this simply returns the length of the cached results set to avoid multiple SELECT COUNT(*) calls.

get_or_create(self, **kwargs)

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Looks up an object with the given kwargs, creating one if necessary. Returns a tuple of (object, created), where created is a boolean specifying whether an object was created.

complex_filter(self, filter_obj)

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Returns a new QuerySet instance with filter_obj added to the filters. filter_obj can be a Q object (has 'get_sql' method) or a dictionary of keyword lookup arguments.

Class _QuerySet

__init__(self, model=None) (Constructor)

__repr__(self) (Representation operator)

count(self)

get_or_create(self, **kwargs)

complex_filter(self, filter_obj)

init(self, model=None)
(Constructor)

repr(self)
(Representation operator)