Django
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4.6 前后实例
版权声明: 转载请注明出处 http://www.codingsoho.com/Django DateTimeField add the get_previous_by_ only. If you want by title you must create your own methods. It doesn't show anything because Django template system fails silently.
Django Model class has a _get_next_or_previous_by_FIELD, and you can create the following:
class MyModel(models.Model):
[fields]
def get_next_by_title(self):
field = self.__class__._meta.get_field('title')
try:
return self._get_next_or_previous_by_FIELD(field , is_next=True)
except MyModel.DoesNotExist:
return None
def get_previous_by_title(self):
field = self.__class__._meta.get_field('title')
try:
return self._get_next_or_previous_by_FIELD(field , is_next=False)
except MyModel.DoesNotExist:
return None
Template:
<a class="col-md-6" href="{{ object.get_previous_by_title.get_absolute_url }}" title="{% trans "revious" %}">« {{ object.get_previous_by_title.title }}</a>
<a class="col-md-6" href="{{ object.get_next_by_title.get_absolute_url }}" title="{% trans "next" %}">» {{ object.get_next_by_title.title }}</a>
实例：英语联想记单词