本文整理汇总了Python中wagtail.images.models.AbstractImage方法的典型用法代码示例。如果您正苦于以下问题：Python models.AbstractImage方法的具体用法？Python models.AbstractImage怎么用？Python models.AbstractImage使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类wagtail.images.models的用法示例。
在下文中一共展示了models.AbstractImage方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: get_field_display_value
# 需要导入模块: from wagtail.images import models [as 别名]
# 或者: from wagtail.images.models import AbstractImage [as 别名]
def get_field_display_value(self, field_name, field=None):
""" Return a display value for a field/attribute """
# First we check for a 'get_fieldname_display' property/method on
# the model, and return the value of that, if present.
val_funct = getattr(self.instance, 'get_%s_display' % field_name, None)
if val_funct is not None:
if callable(val_funct):
return val_funct()
return val_funct
# Now let's get the attribute value from the instance itself and see if
# we can render something useful. raises AttributeError appropriately.
val = getattr(self.instance, field_name)
if isinstance(val, models.Manager):
val = val.all()
if isinstance(val, models.QuerySet):
if val.exists():
return ', '.join(['%s' % obj for obj in val])
return self.model_admin.get_empty_value_display(field_name)
# wagtail.images might not be installed
try:
from wagtail.images.models import AbstractImage
if isinstance(val, AbstractImage):
# Render a rendition of the image
return self.get_image_field_display(field_name, field)
except RuntimeError:
pass
# wagtail.wagtaildocuments might not be installed
try:
from wagtail.documents.models import AbstractDocument
if isinstance(val, AbstractDocument):
# Render a link to the document
return self.get_document_field_display(field_name, field)
except RuntimeError:
pass
# Resort to returning the real value or 'empty value'
if val or val is False:
return val
return self.model_admin.get_empty_value_display(field_name)