Python django.forms.ImageField() Examples

def save(self, commit=True, use_card_filenames=False):
        instance = super(TinyPngForm, self).save(commit=False)
        for field in self.fields.keys():
            if (hasattr(instance, field)
                and field in dir(self.Meta.model)
                and type(self.Meta.model._meta.get_field(field)) == models.models.ImageField):
                image = self.cleaned_data[field]
                if image and (isinstance(image, InMemoryUploadedFile) or isinstance(image, TemporaryUploadedFile)):
                    filename = image.name
                    _, extension = os.path.splitext(filename)
                    if extension.lower() == '.png':
                        image = shrinkImageFromData(image.read(), filename)
                    if use_card_filenames and field in models.cardsImagesToName:
                        image.name = models.cardsImagesToName[field]({
                            'id': instance.id,
                            'firstname': instance.idol.name.split(' ')[-1] if instance.idol and instance.idol.name else 'Unknown',
                        })
                    else:
                        image.name = randomString(32) + extension
                    setattr(instance, field, image)
        if commit:
            instance.save()
        return instance 

def _check_image_library_installed(self):
        try:
            from PIL import Image  # NOQA
        except ImportError:
            return [
                checks.Error(
                    'Cannot use ImageField because Pillow is not installed.',
                    hint=('Get Pillow at https://pypi.python.org/pypi/Pillow '
                          'or run command "pip install Pillow".'),
                    obj=self,
                    id='fields.E210',
                )
            ]
        else:
            return [] 

def __init__(self, verbose_name=None, name=None, width_field=None,
            height_field=None, **kwargs):
        self.width_field, self.height_field = width_field, height_field
        super(ImageField, self).__init__(verbose_name, name, **kwargs) 

def contribute_to_class(self, cls, name):
        super(ImageField, self).contribute_to_class(cls, name)
        # Attach update_dimension_fields so that dimension fields declared
        # after their corresponding image field don't stay cleared by
        # Model.__init__, see bug #11196.
        signals.post_init.connect(self.update_dimension_fields, sender=cls) 

def formfield(self, **kwargs):
        defaults = {'form_class': forms.ImageField}
        defaults.update(kwargs)
        return super(ImageField, self).formfield(**defaults) 

def __set__(self, instance, value):
        previous_file = instance.__dict__.get(self.field.name)
        super(ImageFileDescriptor, self).__set__(instance, value)

        # To prevent recalculating image dimensions when we are instantiating
        # an object from the database (bug #11084), only update dimensions if
        # the field had a value before this assignment.  Since the default
        # value for FileField subclasses is an instance of field.attr_class,
        # previous_file will only be None when we are called from
        # Model.__init__().  The ImageField.update_dimension_fields method
        # hooked up to the post_init signal handles the Model.__init__() cases.
        # Assignment happening outside of Model.__init__() will trigger the
        # update right here.
        if previous_file is not None:
            self.field.update_dimension_fields(instance, force=True) 

def __init__(self, verbose_name=None, name=None, width_field=None,
            height_field=None, **kwargs):
        self.width_field, self.height_field = width_field, height_field
        super(ImageField, self).__init__(verbose_name, name, **kwargs) 

def check(self, **kwargs):
        errors = super(ImageField, self).check(**kwargs)
        errors.extend(self._check_image_library_installed())
        return errors 

def _check_image_library_installed(self):
        try:
            from PIL import Image  # NOQA
        except ImportError:
            return [
                checks.Error(
                    'Cannot use ImageField because Pillow is not installed.',
                    hint=('Get Pillow at https://pypi.python.org/pypi/Pillow '
                          'or run command "pip install Pillow".'),
                    obj=self,
                    id='fields.E210',
                )
            ]
        else:
            return [] 

def deconstruct(self):
        name, path, args, kwargs = super(ImageField, self).deconstruct()
        if self.width_field:
            kwargs['width_field'] = self.width_field
        if self.height_field:
            kwargs['height_field'] = self.height_field
        return name, path, args, kwargs 

def formfield(self, **kwargs):
        defaults = {'form_class': forms.ImageField}
        defaults.update(kwargs)
        return super(ImageField, self).formfield(**defaults) 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media 

def __set__(self, instance, value):
        previous_file = instance.__dict__.get(self.field.name)
        super(ImageFileDescriptor, self).__set__(instance, value)

        # To prevent recalculating image dimensions when we are instantiating
        # an object from the database (bug #11084), only update dimensions if
        # the field had a value before this assignment.  Since the default
        # value for FileField subclasses is an instance of field.attr_class,
        # previous_file will only be None when we are called from
        # Model.__init__().  The ImageField.update_dimension_fields method
        # hooked up to the post_init signal handles the Model.__init__() cases.
        # Assignment happening outside of Model.__init__() will trigger the
        # update right here.
        if previous_file is not None:
            self.field.update_dimension_fields(instance, force=True) 

def __init__(self, verbose_name=None, name=None, width_field=None, height_field=None, **kwargs):
        self.width_field, self.height_field = width_field, height_field
        super(ImageField, self).__init__(verbose_name, name, **kwargs) 

def check(self, **kwargs):
        errors = super(ImageField, self).check(**kwargs)
        errors.extend(self._check_image_library_installed())
        return errors 

def formfield(self, **kwargs):
        defaults = {'form_class': forms.ImageField}
        defaults.update(kwargs)
        return super(ImageField, self).formfield(**defaults) 

def deconstruct(self):
        name, path, args, kwargs = super(ImageField, self).deconstruct()
        if self.width_field:
            kwargs['width_field'] = self.width_field
        if self.height_field:
            kwargs['height_field'] = self.height_field
        return name, path, args, kwargs 

def formfield(self, **kwargs):
        defaults = {'form_class': forms.ImageField}
        defaults.update(kwargs)
        return super(ImageField, self).formfield(**defaults) 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media 

def __init__(self, *args, **kwargs):
        self._DjangoImageField = kwargs.pop('_DjangoImageField', DjangoImageField)
        super(ImageField, self).__init__(*args, **kwargs) 

def get_field_attrs(self, attrs, db_field, **kwargs):
        if isinstance(db_field, models.ImageField):
            attrs['widget'] = AdminImageWidget
            attrs['form_class'] = AdminImageField
            self.include_image = True
        return attrs 

def get_field_result(self, result, field_name):
        if isinstance(result.field, models.ImageField):
            if result.value:
                img = getattr(result.obj, field_name)
                result.text = mark_safe('<a href="%s" target="_blank" title="%s" data-gallery="gallery"><img src="%s" class="field_img"/></a>' % (img.url, result.label, img.url))
                self.include_image = True
        return result

    # Media