How to display multiple tables in one view using django-tables2?

Question

Using djt2 v0.15/dj1.6/pyth2.6.6

djt2 doc example views file for multiple tables:

def people_listing(request) :

    config = RequestConfig(request)
    table1 = PeopleTable(Person.objects.all(), prefix="1-")
    table2 = PeopleTable(Person.objects.all(), prefix="2-")
    config.configure(table1)
    config.configure(table2)
    return render(request, "people_listing.html",
        {"table1": table1, "table2": table2})

This example first of all seems incorrect as to the quoted "table1", "table2" parameters. My tests show the the definition name "people_list" needs to be used in the quotes, at least on a single table. Besides why would anyone want to display the same table twice? Is this a bad example? Here is my app trying to use this structure:

def AvLabVw(request):

    config = RequestConfig(request)
    cmutbl = CmuTable(CmuVersion.objects.all(), prefix="1-")
    simtbl = SimTable(Simulator.objects.all(), prefix="2-")
    config.configure(cmutbl)
    config.configure(simtbl)
    return render(request, "AvRelInfo.html", {"AvLabVw":cmutbl, "AvLabVw":simtbl})

The url file picks up on AvLabVw and the html template uses render_table.

{% render_table AvLabVw %}

What happens with this code is only one table is still displayed, whichever is last on the return render line.

Elsewhere in the doc it says SingleTableView with get_context_data needs to be used, which I haven't figured out yet...

I have an attempt on this style implementation, I think it needs a table object and a list object?

views.py

from django_tables2 import views
from django_tables2 import SingleTableView
from django_tables2 import SingleTableMixin
from django.shortcuts import render
from django_tables2   import RequestConfig

def SimVers_lst(request):

     return render(request, 'AvRelInfo.html', {'SimVers_lst' : Simulator.objects.all()})

def AvLabVw(request):

    config = RequestConfig(request)
    simlst = SimVers_lst(Simulator.objects.all())
    table = CmuTable(CmuVersion.objects.all(), prefix="1-")
    Stv = views.SingleTableView()
    multitbl = Stv.get_context_data()
    config.configure(multitbl)
    return render(request, "AvRelInfo.html", { "AvLabVw" : multitbl })

barfs at {% render_table AvLabVw %} in the html template with the usual catch-all "ValueError at /AvCtlapp/ Expected table or queryset, not 'str'." ... getting some garbage... I guess I can try to see what it gets in a shell if I can set up that test...

Thanks for any help...

Joe

PS: Is a custom render needed, and how would that look?

Answer 1

Your first code example(and it was copied from django-tables2 documentation) was meant for rendering two tables in one single page. Its not a bad example (I think) because it showed how to render 2 tables from same table class with same query-set with different prefix.

And last code example from your question, you got it wrong about using SingleTableView. Its meant for rendering one table in template and its basically a Class Based View. Try like this:

class AvLabVw(SingleTableView):
    model = Simulator
    template_name = 'AvRelInfo.html'
    table_class = SimulatorTable

and template is like:

{% load render_table from django_tables2 %}
{% render_table table %}

Now if you want to render multiple tables, override the get_context_data() method from this view, like this:

class AvLabVw(SingleTableView):
    model = Simulator
    template_name = 'AvRelInfo.html'
    table_class = SimulatorTable


def get_context_data(self, **kwargs):
    context = super(AvLabVw, self).get_context_data(**kwargs)
    context['table_cmu'] =  CmuTable(CmuVersion.objects.all(), prefix="1-")
    return context

and template like:

{% load render_table from django_tables2 %}
{% render_table table %}
{% render_table table_cmu %}

and urls:

url(r'^something/$', AvLabVw.as_view(), name='avlabvw'),