Creating buttons in a column of a table created by django tables2 - django

Question

I have an extended admin model that creates action buttons. I have created a view to do pretty much the same thing. I have used tables2 and everything is just fine except for the actions column. I cannot find a way to generate the same button in the table. Is there a way to do this at all?
tables.py
from .models import Ticket
import django_tables2 as tables
'''from .admin import river_actions, create_river_button'''
class TicketTable(tables.Table):
class Meta:
model=Ticket
template_name='django_tables2/table.html'
fields = ('id','subject','request_type','material_type','productline','business','measurement_system',
'created_at','updated_at','status','river_action','project') # fields to display
attrs = {'class': 'mytable'}
'''attrs = {"class": "table-striped table-bordered"}'''
empty_text = "There are no tickets matching the search criteria..."
admin.py (the part that includes the model etc)
# Define a new User admin to get client info too while defining users
class UserAdmin(BaseUserAdmin):
inlines = (UserExtendInline, )
def create_river_button(obj,proceeding):
return '''
<input
type="button"
style=margin:2px;2px;2px;2px;"
value="%s"
onclick="location.href=\'%s\'"
/>
'''%(proceeding.meta.transition,
reverse('proceed_ticket',kwargs={'ticket_id':obj.pk, 'next_state_id':proceeding.meta.transition.destination_state.pk})
)
class TicketAdmin(admin.ModelAdmin):
list_display=('id','client','subject','request_type','material_type','productline','business','measurement_system', \
'created_at','updated_at','created_by','status','river_actions')
#list_display_links=None if has_model_permissions(request.user,Ticket,['view_ticket'],'mmrapp')==True else list_display
#list_display_links=list_display #use None to remove all links, or use a list to make some fields clickable
#search_fields = ('subject','material_type')
list_filter=[item for item in list_display if item!='river_actions'] #exclude river_actions since it is not related to a field and cannot be filtered
#Using fieldset, we can control which fields should be filled by the user in the ADD method. This way, created_by will be the
#logged in user and not a drop down choice on the admin site
fieldsets = [
(None, {
'fields': ('client','subject','description','request_type','material_type', \
'productline','business','measurement_system', 'project')
} ), #to make some field appear horizontal, put them into a []
]
formfield_overrides = {
models.CharField: {'widget': TextInput (attrs={'size':'40'})},
models.TextField: {'widget': Textarea(attrs={'rows':4, 'cols':80})},}
def get_list_display(self, request):
self.user=request.user
return super(TicketAdmin,self).get_list_display(request)
def river_actions(self,obj):
content=""
for proceeding in obj.get_available_proceedings(self.user):
content+=create_river_button(obj, proceeding)
return content
river_actions.allow_tags=True
#override save_model method to save current user since it is not on the admin page form anymore
def save_model(self, request, obj, form, change):
if not change:
# the object is being created and not changed, so set the user
obj.created_by = request.user
obj.save()
views.py
def display_tickets(request):
table = TicketTable(Ticket.objects.all())
RequestConfig(request).configure(table)
'''table = CustomerTable(Customer.objects.filter(self.kwargs['company']).order_by('-pk'))'''
return render(request,'mmrapp/ticket_display.html',{'table':table})
buttons created in admin page:
table created using tables2 in views missing buttons:

Answer 1

You must pass empty_values=() to the column, because by default, django-tables2 only renders the column if the value is not contained in empty_values for that column.
import django_tables2 as tables
from .admin import river_actions, create_river_button
from .models import Ticket
class TicketTable(tables.Table):
river_action = tables.Column(empty_values=())
class Meta:
model=Ticket
template_name='django_tables2/table.html'
fields = (
'id', 'subject', 'request_type', 'material_type', 'productline', 'business', 'measurement_system',
'created_at', 'updated_at', 'status', 'river_action', 'project'
) # fields to display
attrs = {'class': 'mytable'}
empty_text = "There are no tickets matching the search criteria..."
def render_river_action(self, record):
return create_river_button(record, ...)
This is also documented as Table.render_foo methods