How to Get Value from Form Field in Django Framework

How to get value from form field in django framework?

Using a form in a view pretty much explains it.

The standard pattern for processing a form in a view looks like this:

def contact(request):
    if request.method == 'POST': # If the form has been submitted...
        form = ContactForm(request.POST) # A form bound to the POST data
        if form.is_valid(): # All validation rules pass
            # Process the data in form.cleaned_data
            # ...

            print form.cleaned_data['my_form_field_name']

            return HttpResponseRedirect('/thanks/') # Redirect after POST
    else:
        form = ContactForm() # An unbound form

    return render_to_response('contact.html', {
        'form': form,
    })

How to get value from form and redirect to /value in Django 1.10

form.cleaned_data comes from form.is_valid(), so you sould change your views.py like this:

def index(request):
    [...]
        if request.method == 'POST':
            form = ApartmentForm(request.POST or None)
                if form.is_valid():
                    [...]
                    id = form.cleaned_data.get('id', None)
                    return redirect(id)

How do I get the values from input text fields from my custom form through the request: Django 3.0?

Your mistakes:

item_description(item_name=data.item_name, item_number=data.item_number, item_quantity=data.item_quantity)

data is a QueryDict, so you must access the data in it using data['item_name'] or data.get('item_name') as you would for a regular dict.
item_description(...) doesn't actually do anything. It does not save anything to the database. To save to the database, you must use item_description.objects.create(...).

Other problems with your code:

you render the form fields on your own
you extract the POST data on your own
you attempt to save to the database on your own
you are missing input validation (what if some required values are missing? e.g. what if item_name is not submitted?)
you did not provide a suitable error message as feedback to the user if he/she enters inappropriate values (e.g. a string of length 201).

Django's ModelForm is able to handle all of these issues, so please use ModelForm instead.

If models.py is this:

from django.db import models

class ItemDescription(models.Model):
    item_name = models.CharField(max_length=200)
    item_number = models.CharField(max_length=200)
    item_quantity = models.CharField(max_length=200)

    def __str__(self):
        return self.item_name

Then, create a ModelForm in forms.py:

from django import forms
from .models import ItemDescription

class ItemDescriptioneForm(forms.ModelForm):
    class Meta:
        model = ItemDescription
        fields = ['item_name', 'item_number', 'item_quantity']

In your views.py, use the ModelForm you just created:

from django.shortcuts import render, redirect
from .forms import ItemDescriptionForm

def addItem(request):
    if request.method == 'POST':
        form = ItemDescriptionForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('Items-list')
    else:
        form = ItemDescriptionForm()

    return render(request, 'ims/addItemForm.html', {
        'form': form,
    })

Show the form in your template:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Add Item</title>
</head>
<body>
    <form action="" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        <input type="submit" />
    </form>
</body>
</html>

Cannot set a field value of a Django form in views

You can set the .user attribute of the .instance wrapped in the form:

@login_required(login_url='todo:login')
def task_add(request):
    if request.method == 'POST':
        task_form = AddTask(request.POST)
        if task_form.is_valid():
            task_form.instance.user = request.user
            task_form.save()
            return redirect('todo:index')
    return render(request,'todo/task_add.html')

How do I display the value of a Django form field in a template?

The solution proposed by Jens is correct.
However, it turns out that if you initialize your ModelForm with an instance (example below) django will not populate the data:

def your_view(request):   
    if request.method == 'POST':
        form = UserDetailsForm(request.POST)
        if form.is_valid():
          # some code here   
        else:
          form = UserDetailsForm(instance=request.user)

So, I made my own ModelForm base class that populates the initial data:

from django import forms 
class BaseModelForm(forms.ModelForm):
    """
    Subclass of `forms.ModelForm` that makes sure the initial values
    are present in the form data, so you don't have to send all old values
    for the form to actually validate.
    """
    def merge_from_initial(self):
        filt = lambda v: v not in self.data.keys()
        for field in filter(filt, getattr(self.Meta, 'fields', ())):
            self.data[field] = self.initial.get(field, None)

Then, the simple view example looks like this:

def your_view(request):   if request.method == 'POST':
    form = UserDetailsForm(request.POST)
    if form.is_valid():
      # some code here   
    else:
      form = UserDetailsForm(instance=request.user)
      form.merge_from_initial()

How can I get custom form field value from within Django Admin's response_change?

If you add a name to your <textarea> you will be able to retrieve the contents on the server side. Without a name, the data is not being sent to the server (Django).

So something like this:

<textarea
    placeholder="If you find necessary, provide information on the reasons that led to the rejection of the suggestion"
    id="decline-reasons" name="decline-reasons" class="vLargeTextField" rows="5"></textarea>

Should allow you to retrieve the text on the Django side with request.POST["decline-reasons"].

Django: Set a dropdown form field to a value from the current detail view's Model

Found the answer after posting. For anyone else looking for the answer.

When creating a new form instance (in my case within the get_context_data of my detail view class) use the initial parameter:

context['change_stage_form'] = ChangeStageForm(initial={
         'assessment_stage': self.object.assessment_stage
})

Django Forms Docs: https://docs.djangoproject.com/en/dev/ref/forms/api/#initial-form-values

Thank you to: https://stackoverflow.com/a/813474/16395136

How set example of value in input box of django form

The way to do this is to use Django Forms' widget properties. Here, you can change the HTML that will be rendered client-side.

class YourForm(ModelForm):

    class Meta:
        model = YourModel
        fields = ('your', 'fields')
        widgets = {
            'form_field': forms.TextInput(attrs={'placeholder': "Search Content..."}
        }

The above code will render an input tag for the field form_field, and add an HTML attribute of placeholder with the value of Search Content...

How to Get Value from Form Field in Django Framework