How to have single view for multiple HTML forms - Django

Question

This is my view.So I want to keep 2 different HTML forms in same view ,But I am unable to do so beacuse whenever I add 1 form , I get the error of other on being none.

def home(request):
    name = None
    if request.method == 'POST':
        name = request.POST.get('name')
        choices = request.POST.get('choices')
        subtest = request.POST.get('subtest')
        reference = request.POST.get('reference')
        unit = request.POST.get('unit')
        test = Test()
        test.name = name
        test.save()
        subtest = Subtest()
        subtest.test = Test.objects.get(name=choices)
        subtest.name = subtest
        subtest.unit = unit
        subtest.reference_value = reference
        subtest.save()
        # print(name)
        return redirect('home')
    return render(request,'main.html',{})

I have got 2 different forms . I didn't use django forms because I wanted to try something new.

MY FIRST FORM

<form method="POST">
        {% csrf_token %}
        <div class="icon-holder">
          <i data-modal-target="test-popup" class="icon-cross"></i>
        </div>
        <div class="input-group">
          <input type="text" name="name" placeholder="Test name" />
        </div>
        <div class="button-group">
          <button type="submit">Submit</button>
        </div>
      </form>

MY SECOND FORM

<form method="POST">
        {% csrf_token %}
        <div class="icon-holder">
          <i data-modal-target="menu-test-popup" class="icon-cross"></i>
        </div>
        <div class="input-group">
          <label for="test-select">Test Name:</label>
          <select name="choices" id="test-select">
            {% for test in test %}
            <option value="{{test.name}}" name='choices'>{{test.name|title}}</option>
            {% endfor %}
          </select>
        </div>
        <div class="input-group">
          <input type="text" name="subtest" placeholder="SubTest name" />
        </div>
        <div class="input-group">
          <input type="text" name="reference" placeholder="Reference rate" />
        </div>
        <div class="input-group">
          <input type="text" name="unit" placeholder="Unit" />
        </div>
        <div class="button-group">
          <button type="submit">Submit</button>
        </div>
      </form>

@Lag11 IntegrityError at / NOT NULL constraint failed: lab_test.name — manish
– manish, Commented Feb 15, 2020 at 13:21

ishak O. · Accepted Answer · 2020-02-15 17:39:12Z

2

first form

<form method="POST">
...
<input name="form_type" value="first-form" type="hidden">
</form>

second form

<form method="POST">
...
<input name="form_type" value="second-form" type="hidden">
</form>

view function

def view(request):
  if method == "POST":

    form_type = request.POST.get('form_type')

    if form_type == "first-form":
      # first form's process
    elif form_type == "second-form":  
      #second form's process

edited Feb 15, 2020 at 17:39

answered Feb 15, 2020 at 13:30

ishak O.

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3 Comments

manish Over a year ago

I have already done this. I wanted to have something new like django forms where we can have 2 forms with 1 view and 1 url

ishak O. Over a year ago

then add extra hidden input named "form_type" to both forms one's value is "first-form" other's ''second-value".

form_type = request.POST.get('form_type')  if form_type == "first-form":     #Do first form process else:     # Do second form process

manish Over a year ago

can you please explain and write some code for me . That would mean a lot

Lag11 · Accepted Answer · 2020-02-15 13:28:55Z

0

You have two forms here, when you submit the second form, only the fields from the second form gets submitted.

so from this line

name = request.POST.get('name')

name will become None. But I believe your Test model does not take any None value for name field( the reason for you " IntegrityError at / NOT NULL constraint failed: lab_test.name ").

To overcome this, first check if there is any value for 'name' then proceed with creating the test instance

if name:
    test = Test()
    test.name = name
    test.save()

Similarly check if the other fields are present for the second form before creating and saving the instance.

answered Feb 15, 2020 at 13:28

Lag11

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4 Comments

manish Over a year ago

Let me break down the senario.. I got 2 different Html forms.I want both on one view and one urls. So if I submit 1 view ofcourse the other one is None.

Lag11 Over a year ago

yes so check the presence of the data before creating the instance since your Test model cannot save name as None

manish Over a year ago

When I submit the second form I have none value for first form, Which raises error. Is there any way possible to ignore 1 form when we have other form filled

Lag11 Over a year ago

That is exactly what I have mentioned in the answer, "if name:" this first checks if the name has any value in it(it will be None if the second form is submitted). If and only if the name has some value(when the first form is submitted), test instance is created and saved

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