我想解决的问题:
仅当表my_table
不为空时才显示搜索栏,否则,将其隐藏。
这是我的views.py:
def my_table(request):
model1 = Model1.objects.all().filter(Q(some_query))
table = MyTable(model1)
RequestConfig(request).configure(table)
if not table:
print "table is empty"
table = None
else:
print "table is not empty."
return render(request, 'my_table.html', {'my_table':table,})
这是我的my_table.html
:
{% load render_table from django_tables2 %}
{% if my_table %}
Number of entries: {{ my_table|length }}.
<section>
<form method="post" action=".">
{% csrf_token %}
<input type="text" class="search-query span80" id="search" name="search" placeholder="Type to search">
<button type="submit" class="btn">Search</button>
</form>
</section>
{% else %}
<!-- There's no my_table. -->
{% endif%}
{% render_table my_table %}
但是,my_table(request)
views.py中的这个表对象实际上什么也没有,它不会在html中呈现任何内容,但它不是空的,并显示搜索栏。
请指教。我做错了什么?
回应评论,这是MyTable代码:
class MyTable(tables.Table):
entry1 = tables.Column(verbose_name="Entry 1")
entry2 = tables.Column(verbose_name="Entry 2")
class Meta:
model = MyModel
empty_text = "There is no entry record."
order_by = "entry1"
orderable = True
sequence = ('entry1', 'entry2')
fields = ('entry1', 'entry2')
attrs = {"class": "paleblue", "style": "width:380px"}
这是MyModel的代码:
class MyModel(models.Model):
entry1 = models.CharField(primary_key=True, max_length=11L, db_column='Entry1', blank=True) # Field name made lowercase.
entry2 = models.CharField(max_length=11L, db_column='Entry2', blank=True) # Field name made lowercase.
class Meta:
db_table = 'my_table'
答案 0 :(得分:2)
在views.py中,您可以使用:
if table.data.data.__len__ > 0:
在您的模板中,您可以使用:
{% if table.data|length > 0 %}
do whatever you want here...
{% endif %}