Question 236196 in Html Question posted in
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Html – JS Appended Array in FomData not accessable in Django backend

In a django template i have this js script:

        const formData = new FormData(form);

        formData.append('taglist', JSON.stringify(selectedTagIds));

        console.log(JSON.parse(formData.get('taglist')))
        console.log(formData.get('title_raw'))
        
        form.submit()

selectedTagIds is an array. The console logs it correctly. After submitting I can access every standard form field in the django view but not the "taglist". The field doesn’t exist in the form. When I try to print it i get "None". What am I doing wrong?

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2

Answers


  1. 0

    If it isn’t a member in your form class, you can access it by calling

    j = json.loads(request.POST["taglist"])
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  2. 0

    One easy way would be to add the stringified array in the value of a hidden input in the form to submit.

    const additionalInput = document.createElement("input")
additionalInput.value = JSON.stringify(selectedTagIds)
additionalInput.name = 'taglist'
additionalInput.type = 'hidden'
form.append(additionalInput)

form.submit()
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