django-tables2 customize table visualization

Question

I am working on a web app with Django (first time using this) and I have successfully rendered a table with django-tables2 and it looks like this:

Sequence     Epitope     Score

sequence1    name1       0.5    
sequence1    name2       0.7
sequence2    name1       0.4
sequence2    name2       0.2
...          ...         ...

But I would like to switch the columns and rows to get it to look like:

Sequence     name1     name2     ...
sequence1    0.5       0.7       ...
sequence2    0.4       0.2       ...
...          ...       ...

Is there a way to change this without changing my models? I have been searching for a while now but I can't find a way to change this. Can anyone help me with this?

Here is my table from tables.py

class CSVTables(tables.Table):

class Meta:
    model = CSV_Results
    attrs = {
        'class': 'output_table',
        'th': {'class': 'output_table_header'}
        }
    template_name = 'django_tables2/bootstrap.html'
    fields = ('TCRsequence', 'Epitope', 'Score')#,"Submission_ID")

The model is linked to a form, depending on the input from the user, there could be 10 names in 'Epitope', 50 or just 2,... . My model:

class CSV_Results(models.Model):
TCRsequence = models.CharField(max_length=100)
Epitope = models.CharField(max_length=100)
Score = models.FloatField()
Submission_ID = models.ForeignKey('Info_Submission',on_delete=models.CASCADE)

class Meta:
    verbose_name_plural = "CSV_results"

My views.py:

table = CSVTables(CSV_Results.objects.filter(Submission_ID__Submission_ID__exact=submission_id))
    RequestConfig(request, paginate={'per_page': 50}).configure(table)

And in my html I just rendered the table with:

{% render_table table %}

Thanks!

Answer 1

For fixed set of columns which are not generated dynamically, define table as below and do not associate it with model

class CSVTables(Table):
   sequence = Column(verbose_name='Sequence')
   name1 = Column(verbose_name='Name1')
   name2 = Column(verbose_name='Name2')

Then iterate over queryset objects to generate list of dictionary objects matching to table, which will be passed as argument during table initialization. Each dictionary object should be of format

{ 'sequence' : 'xxxx',
   'name1' : 'yyy',
   'name2' : 'zzz'}

Update:

django-tables2 will not suite for dynamic columns generation. For Dynamic columns client side rendering is a better option. There are couple of JS libraries like datatables might help at client side. A django view app for datatables is django-datatable-view , but I have not tried the dynamic tables in this app. If not, a simple view which can serialize the JSON data as per datatables requirement, which is quite simple, is all what is needed.