Django index value of array - django

Question

I am sending an array of arrays a post request through $ajax
ie:
[[1, "25, 25, 25", "pounds", "exercise note 1"],[2, "", "No Weight", "note 2"]]
My ajax:
$.ajax({
type: 'POST',
url: '',
dataType: 'json',
data:{
csrfmiddlewaretoken: csrftoken,
targets:JSON.stringify(targets),
// notes:notes,
// time:time,
// rating:rating
},
success: (res)=>{
console.log(res)
},
error: (error)=>{
console.log(error)
}
})
In django, when I print(request.POST), I get
'targets[0][]':[1, "25, 25, 25", "pounds", "exercise note 1"], 'target[1][0]':[2, "", "No Weight", "note 2"].
I have tried
JSON.stringify([[1, "25, 25, 25", "pounds", "exercise note 1"],[2, "", "No Weight", "note 2"]])
and I get back
'targets': ['[[2,"25, 25, 25","Pounds","note 1"],[1,"","NoWeights","note 2"]]'],
I've also tried:
ts.push(t)
django returns:
'targets[]': ['[2,"25, 25, 25","Pounds","note 1"]', '[1,"","NoWeights","note 2"]
which is what I want. But when I do
targets = request.POST.getlist('targets[])
for target in targets:
print(target[2]) -->I want either "25, 25, 25" or , ""
But all I get is , and when I print(len(target)) the first array returns 34. Why? How do I get the strings? What am I doing wrong? I want to assigned each index in the target array to a varible so I can save to the database

Answer 1

If you send targets as JSON in your request(NOTE: only the targets part is JSON) then you have to decode it when you get it on the server side.
targets = [[1, "25, 25, 25", "pounds", "exercise note 1"],[2, "", "No Weight", "note 2"]];
$.ajax({
type: 'POST',
url: '',
dataType: 'json',
data:{
csrfmiddlewaretoken: csrftoken,
targets:JSON.stringify(targets),
// notes:notes,
// time:time,
// rating:rating
},
success: (res)=>{
console.log(res)
},
error: (error)=>{
console.log(error)
}
}
});
targets_json = request.POST.get('targets')
targets = json.loads(targets_json)
for target in targets:
print(target[2])