diff options
Diffstat (limited to 'lib/python2.7/site-packages/django/contrib/admin/validation.py')
| -rw-r--r-- | lib/python2.7/site-packages/django/contrib/admin/validation.py | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/lib/python2.7/site-packages/django/contrib/admin/validation.py b/lib/python2.7/site-packages/django/contrib/admin/validation.py deleted file mode 100644 index fb9634d..0000000 --- a/lib/python2.7/site-packages/django/contrib/admin/validation.py +++ /dev/null @@ -1,429 +0,0 @@ -from django.core.exceptions import ImproperlyConfigured -from django.db import models -from django.db.models.fields import FieldDoesNotExist -from django.forms.models import BaseModelForm, BaseModelFormSet, _get_foreign_key -from django.contrib.admin.util import get_fields_from_path, NotRelationField - -""" -Does basic ModelAdmin option validation. Calls custom validation -classmethod in the end if it is provided in cls. The signature of the -custom validation classmethod should be: def validate(cls, model). -""" - -__all__ = ['BaseValidator', 'InlineValidator'] - - -class BaseValidator(object): - def __init__(self): - # Before we can introspect models, they need to be fully loaded so that - # inter-relations are set up correctly. We force that here. - models.get_apps() - - def validate(self, cls, model): - for m in dir(self): - if m.startswith('validate_'): - getattr(self, m)(cls, model) - - def check_field_spec(self, cls, model, flds, label): - """ - Validate the fields specification in `flds` from a ModelAdmin subclass - `cls` for the `model` model. Use `label` for reporting problems to the user. - - The fields specification can be a ``fields`` option or a ``fields`` - sub-option from a ``fieldsets`` option component. - """ - for fields in flds: - # The entry in fields might be a tuple. If it is a standalone - # field, make it into a tuple to make processing easier. - if type(fields) != tuple: - fields = (fields,) - for field in fields: - if field in cls.readonly_fields: - # Stuff can be put in fields that isn't actually a - # model field if it's in readonly_fields, - # readonly_fields will handle the validation of such - # things. - continue - try: - f = model._meta.get_field(field) - except models.FieldDoesNotExist: - # If we can't find a field on the model that matches, it could be an - # extra field on the form; nothing to check so move on to the next field. - continue - if isinstance(f, models.ManyToManyField) and not f.rel.through._meta.auto_created: - raise ImproperlyConfigured("'%s.%s' " - "can't include the ManyToManyField field '%s' because " - "'%s' manually specifies a 'through' model." % ( - cls.__name__, label, field, field)) - - def validate_raw_id_fields(self, cls, model): - " Validate that raw_id_fields only contains field names that are listed on the model. " - if hasattr(cls, 'raw_id_fields'): - check_isseq(cls, 'raw_id_fields', cls.raw_id_fields) - for idx, field in enumerate(cls.raw_id_fields): - f = get_field(cls, model, 'raw_id_fields', field) - if not isinstance(f, (models.ForeignKey, models.ManyToManyField)): - raise ImproperlyConfigured("'%s.raw_id_fields[%d]', '%s' must " - "be either a ForeignKey or ManyToManyField." - % (cls.__name__, idx, field)) - - def validate_fields(self, cls, model): - " Validate that fields only refer to existing fields, doesn't contain duplicates. " - # fields - if cls.fields: # default value is None - check_isseq(cls, 'fields', cls.fields) - self.check_field_spec(cls, model, cls.fields, 'fields') - if cls.fieldsets: - raise ImproperlyConfigured('Both fieldsets and fields are specified in %s.' % cls.__name__) - if len(cls.fields) > len(set(cls.fields)): - raise ImproperlyConfigured('There are duplicate field(s) in %s.fields' % cls.__name__) - - def validate_fieldsets(self, cls, model): - " Validate that fieldsets is properly formatted and doesn't contain duplicates. " - from django.contrib.admin.options import flatten_fieldsets - if cls.fieldsets: # default value is None - check_isseq(cls, 'fieldsets', cls.fieldsets) - for idx, fieldset in enumerate(cls.fieldsets): - check_isseq(cls, 'fieldsets[%d]' % idx, fieldset) - if len(fieldset) != 2: - raise ImproperlyConfigured("'%s.fieldsets[%d]' does not " - "have exactly two elements." % (cls.__name__, idx)) - check_isdict(cls, 'fieldsets[%d][1]' % idx, fieldset[1]) - if 'fields' not in fieldset[1]: - raise ImproperlyConfigured("'fields' key is required in " - "%s.fieldsets[%d][1] field options dict." - % (cls.__name__, idx)) - self.check_field_spec(cls, model, fieldset[1]['fields'], "fieldsets[%d][1]['fields']" % idx) - flattened_fieldsets = flatten_fieldsets(cls.fieldsets) - if len(flattened_fieldsets) > len(set(flattened_fieldsets)): - raise ImproperlyConfigured('There are duplicate field(s) in %s.fieldsets' % cls.__name__) - - def validate_exclude(self, cls, model): - " Validate that exclude is a sequence without duplicates. " - if cls.exclude: # default value is None - check_isseq(cls, 'exclude', cls.exclude) - if len(cls.exclude) > len(set(cls.exclude)): - raise ImproperlyConfigured('There are duplicate field(s) in %s.exclude' % cls.__name__) - - def validate_form(self, cls, model): - " Validate that form subclasses BaseModelForm. " - if hasattr(cls, 'form') and not issubclass(cls.form, BaseModelForm): - raise ImproperlyConfigured("%s.form does not inherit from " - "BaseModelForm." % cls.__name__) - - def validate_filter_vertical(self, cls, model): - " Validate that filter_vertical is a sequence of field names. " - if hasattr(cls, 'filter_vertical'): - check_isseq(cls, 'filter_vertical', cls.filter_vertical) - for idx, field in enumerate(cls.filter_vertical): - f = get_field(cls, model, 'filter_vertical', field) - if not isinstance(f, models.ManyToManyField): - raise ImproperlyConfigured("'%s.filter_vertical[%d]' must be " - "a ManyToManyField." % (cls.__name__, idx)) - - def validate_filter_horizontal(self, cls, model): - " Validate that filter_horizontal is a sequence of field names. " - if hasattr(cls, 'filter_horizontal'): - check_isseq(cls, 'filter_horizontal', cls.filter_horizontal) - for idx, field in enumerate(cls.filter_horizontal): - f = get_field(cls, model, 'filter_horizontal', field) - if not isinstance(f, models.ManyToManyField): - raise ImproperlyConfigured("'%s.filter_horizontal[%d]' must be " - "a ManyToManyField." % (cls.__name__, idx)) - - def validate_radio_fields(self, cls, model): - " Validate that radio_fields is a dictionary of choice or foreign key fields. " - from django.contrib.admin.options import HORIZONTAL, VERTICAL - if hasattr(cls, 'radio_fields'): - check_isdict(cls, 'radio_fields', cls.radio_fields) - for field, val in cls.radio_fields.items(): - f = get_field(cls, model, 'radio_fields', field) - if not (isinstance(f, models.ForeignKey) or f.choices): - raise ImproperlyConfigured("'%s.radio_fields['%s']' " - "is neither an instance of ForeignKey nor does " - "have choices set." % (cls.__name__, field)) - if not val in (HORIZONTAL, VERTICAL): - raise ImproperlyConfigured("'%s.radio_fields['%s']' " - "is neither admin.HORIZONTAL nor admin.VERTICAL." - % (cls.__name__, field)) - - def validate_prepopulated_fields(self, cls, model): - " Validate that prepopulated_fields if a dictionary containing allowed field types. " - # prepopulated_fields - if hasattr(cls, 'prepopulated_fields'): - check_isdict(cls, 'prepopulated_fields', cls.prepopulated_fields) - for field, val in cls.prepopulated_fields.items(): - f = get_field(cls, model, 'prepopulated_fields', field) - if isinstance(f, (models.DateTimeField, models.ForeignKey, - models.ManyToManyField)): - raise ImproperlyConfigured("'%s.prepopulated_fields['%s']' " - "is either a DateTimeField, ForeignKey or " - "ManyToManyField. This isn't allowed." - % (cls.__name__, field)) - check_isseq(cls, "prepopulated_fields['%s']" % field, val) - for idx, f in enumerate(val): - get_field(cls, model, "prepopulated_fields['%s'][%d]" % (field, idx), f) - - def validate_ordering(self, cls, model): - " Validate that ordering refers to existing fields or is random. " - # ordering = None - if cls.ordering: - check_isseq(cls, 'ordering', cls.ordering) - for idx, field in enumerate(cls.ordering): - if field == '?' and len(cls.ordering) != 1: - raise ImproperlyConfigured("'%s.ordering' has the random " - "ordering marker '?', but contains other fields as " - "well. Please either remove '?' or the other fields." - % cls.__name__) - if field == '?': - continue - if field.startswith('-'): - field = field[1:] - # Skip ordering in the format field1__field2 (FIXME: checking - # this format would be nice, but it's a little fiddly). - if '__' in field: - continue - get_field(cls, model, 'ordering[%d]' % idx, field) - - def validate_readonly_fields(self, cls, model): - " Validate that readonly_fields refers to proper attribute or field. " - if hasattr(cls, "readonly_fields"): - check_isseq(cls, "readonly_fields", cls.readonly_fields) - for idx, field in enumerate(cls.readonly_fields): - if not callable(field): - if not hasattr(cls, field): - if not hasattr(model, field): - try: - model._meta.get_field(field) - except models.FieldDoesNotExist: - raise ImproperlyConfigured("%s.readonly_fields[%d], %r is not a callable or an attribute of %r or found in the model %r." - % (cls.__name__, idx, field, cls.__name__, model._meta.object_name)) - - -class ModelAdminValidator(BaseValidator): - def validate_save_as(self, cls, model): - " Validate save_as is a boolean. " - check_type(cls, 'save_as', bool) - - def validate_save_on_top(self, cls, model): - " Validate save_on_top is a boolean. " - check_type(cls, 'save_on_top', bool) - - def validate_inlines(self, cls, model): - " Validate inline model admin classes. " - from django.contrib.admin.options import BaseModelAdmin - if hasattr(cls, 'inlines'): - check_isseq(cls, 'inlines', cls.inlines) - for idx, inline in enumerate(cls.inlines): - if not issubclass(inline, BaseModelAdmin): - raise ImproperlyConfigured("'%s.inlines[%d]' does not inherit " - "from BaseModelAdmin." % (cls.__name__, idx)) - if not inline.model: - raise ImproperlyConfigured("'model' is a required attribute " - "of '%s.inlines[%d]'." % (cls.__name__, idx)) - if not issubclass(inline.model, models.Model): - raise ImproperlyConfigured("'%s.inlines[%d].model' does not " - "inherit from models.Model." % (cls.__name__, idx)) - inline.validate(inline.model) - self.check_inline(inline, model) - - def check_inline(self, cls, parent_model): - " Validate inline class's fk field is not excluded. " - fk = _get_foreign_key(parent_model, cls.model, fk_name=cls.fk_name, can_fail=True) - if hasattr(cls, 'exclude') and cls.exclude: - if fk and fk.name in cls.exclude: - raise ImproperlyConfigured("%s cannot exclude the field " - "'%s' - this is the foreign key to the parent model " - "%s.%s." % (cls.__name__, fk.name, parent_model._meta.app_label, parent_model.__name__)) - - def validate_list_display(self, cls, model): - " Validate that list_display only contains fields or usable attributes. " - if hasattr(cls, 'list_display'): - check_isseq(cls, 'list_display', cls.list_display) - for idx, field in enumerate(cls.list_display): - if not callable(field): - if not hasattr(cls, field): - if not hasattr(model, field): - try: - model._meta.get_field(field) - except models.FieldDoesNotExist: - raise ImproperlyConfigured("%s.list_display[%d], %r is not a callable or an attribute of %r or found in the model %r." - % (cls.__name__, idx, field, cls.__name__, model._meta.object_name)) - else: - # getattr(model, field) could be an X_RelatedObjectsDescriptor - f = fetch_attr(cls, model, "list_display[%d]" % idx, field) - if isinstance(f, models.ManyToManyField): - raise ImproperlyConfigured("'%s.list_display[%d]', '%s' is a ManyToManyField which is not supported." - % (cls.__name__, idx, field)) - - def validate_list_display_links(self, cls, model): - " Validate that list_display_links is a unique subset of list_display. " - if hasattr(cls, 'list_display_links'): - check_isseq(cls, 'list_display_links', cls.list_display_links) - for idx, field in enumerate(cls.list_display_links): - if field not in cls.list_display: - raise ImproperlyConfigured("'%s.list_display_links[%d]' " - "refers to '%s' which is not defined in 'list_display'." - % (cls.__name__, idx, field)) - - def validate_list_filter(self, cls, model): - """ - Validate that list_filter is a sequence of one of three options: - 1: 'field' - a basic field filter, possibly w/ relationships (eg, 'field__rel') - 2: ('field', SomeFieldListFilter) - a field-based list filter class - 3: SomeListFilter - a non-field list filter class - """ - from django.contrib.admin import ListFilter, FieldListFilter - if hasattr(cls, 'list_filter'): - check_isseq(cls, 'list_filter', cls.list_filter) - for idx, item in enumerate(cls.list_filter): - if callable(item) and not isinstance(item, models.Field): - # If item is option 3, it should be a ListFilter... - if not issubclass(item, ListFilter): - raise ImproperlyConfigured("'%s.list_filter[%d]' is '%s'" - " which is not a descendant of ListFilter." - % (cls.__name__, idx, item.__name__)) - # ... but not a FieldListFilter. - if issubclass(item, FieldListFilter): - raise ImproperlyConfigured("'%s.list_filter[%d]' is '%s'" - " which is of type FieldListFilter but is not" - " associated with a field name." - % (cls.__name__, idx, item.__name__)) - else: - if isinstance(item, (tuple, list)): - # item is option #2 - field, list_filter_class = item - if not issubclass(list_filter_class, FieldListFilter): - raise ImproperlyConfigured("'%s.list_filter[%d][1]'" - " is '%s' which is not of type FieldListFilter." - % (cls.__name__, idx, list_filter_class.__name__)) - else: - # item is option #1 - field = item - # Validate the field string - try: - get_fields_from_path(model, field) - except (NotRelationField, FieldDoesNotExist): - raise ImproperlyConfigured("'%s.list_filter[%d]' refers to '%s'" - " which does not refer to a Field." - % (cls.__name__, idx, field)) - - def validate_list_select_related(self, cls, model): - " Validate that list_select_related is a boolean, a list or a tuple. " - list_select_related = getattr(cls, 'list_select_related', None) - if list_select_related: - types = (bool, tuple, list) - if not isinstance(list_select_related, types): - raise ImproperlyConfigured("'%s.list_select_related' should be " - "either a bool, a tuple or a list" % - cls.__name__) - - def validate_list_per_page(self, cls, model): - " Validate that list_per_page is an integer. " - check_type(cls, 'list_per_page', int) - - def validate_list_max_show_all(self, cls, model): - " Validate that list_max_show_all is an integer. " - check_type(cls, 'list_max_show_all', int) - - def validate_list_editable(self, cls, model): - """ - Validate that list_editable is a sequence of editable fields from - list_display without first element. - """ - if hasattr(cls, 'list_editable') and cls.list_editable: - check_isseq(cls, 'list_editable', cls.list_editable) - for idx, field_name in enumerate(cls.list_editable): - try: - field = model._meta.get_field_by_name(field_name)[0] - except models.FieldDoesNotExist: - raise ImproperlyConfigured("'%s.list_editable[%d]' refers to a " - "field, '%s', not defined on %s.%s." - % (cls.__name__, idx, field_name, model._meta.app_label, model.__name__)) - if field_name not in cls.list_display: - raise ImproperlyConfigured("'%s.list_editable[%d]' refers to " - "'%s' which is not defined in 'list_display'." - % (cls.__name__, idx, field_name)) - if field_name in cls.list_display_links: - raise ImproperlyConfigured("'%s' cannot be in both '%s.list_editable'" - " and '%s.list_display_links'" - % (field_name, cls.__name__, cls.__name__)) - if not cls.list_display_links and cls.list_display[0] in cls.list_editable: - raise ImproperlyConfigured("'%s.list_editable[%d]' refers to" - " the first field in list_display, '%s', which can't be" - " used unless list_display_links is set." - % (cls.__name__, idx, cls.list_display[0])) - if not field.editable: - raise ImproperlyConfigured("'%s.list_editable[%d]' refers to a " - "field, '%s', which isn't editable through the admin." - % (cls.__name__, idx, field_name)) - - def validate_search_fields(self, cls, model): - " Validate search_fields is a sequence. " - if hasattr(cls, 'search_fields'): - check_isseq(cls, 'search_fields', cls.search_fields) - - def validate_date_hierarchy(self, cls, model): - " Validate that date_hierarchy refers to DateField or DateTimeField. " - if cls.date_hierarchy: - f = get_field(cls, model, 'date_hierarchy', cls.date_hierarchy) - if not isinstance(f, (models.DateField, models.DateTimeField)): - raise ImproperlyConfigured("'%s.date_hierarchy is " - "neither an instance of DateField nor DateTimeField." - % cls.__name__) - - -class InlineValidator(BaseValidator): - def validate_fk_name(self, cls, model): - " Validate that fk_name refers to a ForeignKey. " - if cls.fk_name: # default value is None - f = get_field(cls, model, 'fk_name', cls.fk_name) - if not isinstance(f, models.ForeignKey): - raise ImproperlyConfigured("'%s.fk_name is not an instance of " - "models.ForeignKey." % cls.__name__) - - def validate_extra(self, cls, model): - " Validate that extra is an integer. " - check_type(cls, 'extra', int) - - def validate_max_num(self, cls, model): - " Validate that max_num is an integer. " - check_type(cls, 'max_num', int) - - def validate_formset(self, cls, model): - " Validate formset is a subclass of BaseModelFormSet. " - if hasattr(cls, 'formset') and not issubclass(cls.formset, BaseModelFormSet): - raise ImproperlyConfigured("'%s.formset' does not inherit from " - "BaseModelFormSet." % cls.__name__) - - -def check_type(cls, attr, type_): - if getattr(cls, attr, None) is not None and not isinstance(getattr(cls, attr), type_): - raise ImproperlyConfigured("'%s.%s' should be a %s." - % (cls.__name__, attr, type_.__name__ )) - -def check_isseq(cls, label, obj): - if not isinstance(obj, (list, tuple)): - raise ImproperlyConfigured("'%s.%s' must be a list or tuple." % (cls.__name__, label)) - -def check_isdict(cls, label, obj): - if not isinstance(obj, dict): - raise ImproperlyConfigured("'%s.%s' must be a dictionary." % (cls.__name__, label)) - -def get_field(cls, model, label, field): - try: - return model._meta.get_field(field) - except models.FieldDoesNotExist: - raise ImproperlyConfigured("'%s.%s' refers to field '%s' that is missing from model '%s.%s'." - % (cls.__name__, label, field, model._meta.app_label, model.__name__)) - -def fetch_attr(cls, model, label, field): - try: - return model._meta.get_field(field) - except models.FieldDoesNotExist: - pass - try: - return getattr(model, field) - except AttributeError: - raise ImproperlyConfigured("'%s.%s' refers to '%s' that is neither a field, method or property of model '%s.%s'." - % (cls.__name__, label, field, model._meta.app_label, model.__name__)) |