Add variable value in render field in django template

[Rajshree Some]

Hi Users,
I have a value in variable occurence counter and I want to pass this value 
in this render field .Can anyone help it?

{% render_field class+='form-control' data-id="occurence_counter " %}

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How can i send formdata and other data in ajax post

[Rajshree Some]

I have a Ajax post method where I am sending mutiple data but now I want to 
add formdata and capture it in post method as object.Can I do that?

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join query to get the maximum value in django orm

[Rajshree Some]

Table1
id  namecomment

1

Item1

Bad

2

Item2

Good

 


 

Table2

Id 
table1_id   
 
 marks  

1.

1

23

2.

1

54

3.

2

66

4.

2

55

I want to write a single query to fetch the maxium marks of each item and 
update the parent table each item comment with bad if the max is less 60 
and good if the max is greater that 60

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how to retrieve maximum value in many to many field

[Rajshree Some]

Table1

id

1

Item1

Good

2

Item2

bad


  

Table2


Id 
table1_id   
 
 marks  

1.

1

23

2.

1

54

3.

2

66

4.

2

55

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raise DatabaseError('ORDER BY term does not match any column in the result set.')

[Rajshree Some]

how to send a union queryset in get_initial_queryset of django

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union in get_initial_queryset in datatable

[Rajshree Some]

list=Model1.objects.filter(
 reservation__in=Model.objects.filter(resource__in=resources).union(
Model2.objects.filter(
 
reservation__in=Model.object.filter(resource__in=resources).defer('col4','col5','col6'),
 
 Model3.objects.filter(
 reservation__in=Model.objects.filter(resource__in=resources),\
Model4.objects.filter(
 
reservation__in=Model.objects.filter(resource__in=resources).defer('col4')


I am trying to resturn this queryset in get_initial_queryset in datatable.But 
getting an error 

raise DatabaseError('ORDER BY term does not match any column in the result 
set.') 


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