Python models.ManyToManyRel方法代码示例

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def display_for_field(value, field):
    from xadmin.views.list import EMPTY_CHANGELIST_VALUE

    if field.flatchoices:
        return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE)
    # NullBooleanField needs special-case null-handling, so it comes
    # before the general null test.
    elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField):
        return boolean_icon(value)
    elif value is None:
        return EMPTY_CHANGELIST_VALUE
    elif isinstance(field, models.DateTimeField):
        return formats.localize(tz_localtime(value))
    elif isinstance(field, (models.DateField, models.TimeField)):
        return formats.localize(value)
    elif isinstance(field, models.DecimalField):
        return formats.number_format(value, field.decimal_places)
    elif isinstance(field, models.FloatField):
        return formats.number_format(value)
    elif isinstance(field.rel, models.ManyToManyRel):
        return ', '.join([smart_text(obj) for obj in value.all()])
    else:
        return smart_text(value) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def display_for_field(value, field):
    from xadmin.views.list import EMPTY_CHANGELIST_VALUE

    if field.flatchoices:
        return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE)
    # NullBooleanField needs special-case null-handling, so it comes
    # before the general null test.
    elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField):
        return boolean_icon(value)
    elif value is None:
        return EMPTY_CHANGELIST_VALUE
    elif isinstance(field, models.DateTimeField):
        return formats.localize(tz_localtime(value))
    elif isinstance(field, (models.DateField, models.TimeField)):
        return formats.localize(value)
    elif isinstance(field, models.DecimalField):
        return formats.number_format(value, field.decimal_places)
    elif isinstance(field, models.FloatField):
        return formats.number_format(value)
    elif isinstance(field.remote_field, models.ManyToManyRel):
        return ', '.join([smart_text(obj) for obj in value.all()])
    else:
        return smart_text(value) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def get_field_instance(self, model, field_name):
        field = model._meta.get_field(field_name)
        field_kwargs = {'model': model, 'name': field.name}
        if field.is_relation:
            if not field.related_model:
                # GenericForeignKey
                return
            if self.excluded(field.related_model):
                return
            field_cls = RelationField
            field_kwargs['related_model'] = field.related_model
        else:
            field_cls = self.get_field_cls(field)
        if isinstance(field, (ManyToOneRel, ManyToManyRel, ForeignObjectRel)):
            # Django 1.8 doesn't have .null attribute for these fields
            field_kwargs['nullable'] = True
        else:
            field_kwargs['nullable'] = field.null
        field_kwargs['suggest_options'] = (
            field.name in self.suggest_options.get(model, [])
        )
        return field_cls(**field_kwargs) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def validate_local_fields(e, opts, field_name, fields):
    from django.db import models

    if not isinstance(fields, collections.Sequence):
        e.add(opts, 'all %s elements must be sequences' % field_name)
    else:
        for field in fields:
            try:
                f = opts.get_field(field, many_to_many=True)
            except models.FieldDoesNotExist:
                e.add(opts, '"%s" refers to %s, a field that doesn\'t exist.' % (field_name, field))
            else:
                if isinstance(f.rel, models.ManyToManyRel):
                    e.add(opts, '"%s" refers to %s. ManyToManyFields are not supported in %s.' % (field_name, f.name, field_name))
                if f not in opts.local_fields:
                    e.add(opts, '"%s" refers to %s. This is not in the same model as the %s statement.' % (field_name, f.name, field_name)) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def display_for_field(value, field):
    from xadmin.views.list import EMPTY_CHANGELIST_VALUE

    if field.flatchoices:
        return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE)
    # NullBooleanField needs special-case null-handling, so it comes
    # before the general null test.
    elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField):
        return boolean_icon(value)
    elif value is None:
        return EMPTY_CHANGELIST_VALUE
    elif isinstance(field, models.DateTimeField):
        return formats.localize(tz_localtime(value))
    elif isinstance(field, (models.DateField, models.TimeField)):
        return formats.localize(value)
    elif isinstance(field, models.DecimalField):
        return formats.number_format(value, field.decimal_places)
    elif isinstance(field, models.FloatField):
        return formats.number_format(value)
    elif isinstance(field.rel, models.ManyToManyRel):
        return ', '.join([smart_unicode(obj) for obj in value.all()])
    else:
        return smart_unicode(value) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def lookup_needs_distinct(opts, lookup_path):
    """
    Returns True if 'distinct()' should be used to query the given lookup path.
    """
    field_name = lookup_path.split('__', 1)[0]
    field = opts.get_field(field_name)
    if ((hasattr(field, 'rel') and
         isinstance(field.rel, models.ManyToManyRel)) or
        (is_related_field(field) and
         not field.field.unique)):
        return True
    return False 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def get_version_object(self, version):
        obj_version = version._object_version
        obj = obj_version.object
        obj._state.db = self.obj._state.db

        for field_name, pks in obj_version.m2m_data.items():
            f = self.opts.get_field(field_name)
            if f.rel and isinstance(f.rel, models.ManyToManyRel):
                setattr(obj, f.name, f.rel.to._default_manager.get_query_set(
                ).filter(pk__in=pks).all())

        detail = self.get_model_view(DetailAdminUtil, self.model, obj)

        return obj, detail 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def get_related_models(self, model):
        fields = model._meta.get_fields(include_hidden=True)
        def filter_fields(x):
            if any(map(lambda rel: isinstance(x, rel), [
                models.OneToOneRel,
                models.OneToOneField,
                models.ManyToOneRel,
                models.ManyToManyField,
                models.ManyToManyRel
            ])):
                return True
            return False
        return list(map(lambda x: x.related_model, filter(filter_fields, fields))) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def get_model_fields(self, model):
        fields = model._meta.get_fields()

        def filter_fields(x):
            if any(map(lambda rel: isinstance(x, rel), [
                models.ManyToOneRel,
                models.ManyToManyField,
                models.ManyToManyRel,
                GenericRel,
                GenericForeignKey,
                GenericRelation
            ])):
                return False
            return True
        return filter(filter_fields, fields) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def lookup_needs_distinct(opts, lookup_path):
    """
    Returns True if 'distinct()' should be used to query the given lookup path.
    """
    field_name = lookup_path.split('__', 1)[0]
    field = opts.get_field(field_name)
    if ((hasattr(field, 'remote_field') and
         isinstance(field.remote_field, models.ManyToManyRel)) or
        (is_related_field(field) and
         not field.field.unique)):
        return True
    return False 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def setup_db_compat_django():
    from tri_table import register_column_factory
    try:
        # noinspection PyUnresolvedReferences
        from django.db.models import IntegerField, FloatField, TextField, BooleanField, AutoField, CharField, DateField, DateTimeField, DecimalField, EmailField, TimeField, ForeignKey, ManyToOneRel, ManyToManyField, ManyToManyRel, UUIDField
    except ImportError:
        pass
    else:
        # The order here is significant because of inheritance structure. More specific must be below less specific.

        register_column_factory(CharField, Shortcut(call_target__attribute='text'))
        register_column_factory(UUIDField, Shortcut(call_target__attribute='text'))
        register_column_factory(TimeField, Shortcut(call_target__attribute='time'))
        register_column_factory(EmailField, Shortcut(call_target__attribute='email'))
        register_column_factory(DecimalField, Shortcut(call_target__attribute='decimal'))
        register_column_factory(DateField, Shortcut(call_target__attribute='date'))
        register_column_factory(DateTimeField, Shortcut(call_target__attribute='datetime'))
        register_column_factory(BooleanField, Shortcut(call_target__attribute='boolean'))
        register_column_factory(TextField, Shortcut(call_target__attribute='text'))
        register_column_factory(FloatField, Shortcut(call_target__attribute='float'))
        register_column_factory(IntegerField, Shortcut(call_target__attribute='integer'))
        register_column_factory(AutoField, Shortcut(call_target__attribute='integer', show=False))
        register_column_factory(ManyToOneRel, None)
        register_column_factory(ManyToManyField, Shortcut(call_target__attribute='many_to_many'))
        register_column_factory(ManyToManyRel, None)

        register_column_factory(ForeignKey, Shortcut(call_target__attribute='foreign_key')) 

# 需要导入模块: from django.db import models [as 别名]
# 或者: from django.db.models import ManyToManyRel [as 别名]
def get_reverse_fields(model, local_field_names):
    for name, attr in model.__dict__.items():
        # Don't duplicate any local fields
        if name in local_field_names:
            continue

        # "rel" for FK and M2M relations and "related" for O2O Relations
        related = getattr(attr, "rel", None) or getattr(attr, "related", None)
        if isinstance(related, models.ManyToOneRel):
            yield (name, related)
        elif isinstance(related, models.ManyToManyRel) and not related.symmetrical:
            yield (name, related)