Django set field value after a form is initialized. For example, I have the following class. print self. While initializing a form with default values (using the `initial` parameter) is straightforward, there are many scenarios where you need to **dynamically set or update field values after the form has been initialized**. Is there a way so we can initialize form field in model form? views. Model. Jul 12, 2025 · Django offers multiple ways to set initial data for forms. . I was wondering how you can assign a value to a django form field in the template. Django : Django set field value after a form is initializedTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"As promised, I'm g Jul 31, 2021 · 2 I want to set initial data in model form, how can i do that? I've been looking for an answer but mostly the answer is using initial or instance in view. initial = 'something' In my case, I was trying to do a personalized auto-increment (based on current data and not a simple default) in a field of a django admin form. Aug 15, 2013 · 17 It seems like if a ModelForm is given an instance, it ignores any values you provide for initial and instead sets it to the value of the instance -- even if that instance is an empty model record. py def create_order(request, *args, **kwargs): # move this thing into model form initial_data = { 'user': request. Each attribute of the model represents a database field. fields['author'] = request. fields['email']. The basics: Each model is a Python class that subclasses django. If you study form. __init__ in your Form class, you should update the form. db. Is there any way to create a form with an instance and have it set initial data? We need what you want to do as well: set a default value, set a value if not value exist, correct a value if it's not good, etc. __init__), it will contain values for all the fields. initial property. There are several hooks on django forms. Dec 10, 2021 · 1 How can I set up a model/form combination so that the field in the model is initialized to a fixed value and there is no form element displayed when the form is presented to the user? I just want to initialize Source. initial (e. Other options include setting initial values directly on form fields or overriding the form’s __init__ method for more dynamic behavior. user. We need what you want to do as well: set a default value, set a value if not value exist, correct a value if it's not good, etc. datetime(2000, 1, 1, 0, 0, 0, 0) each time a new Source is created from a form. Lott's answer tells you how to initialize the form with some data in your view. Here's how you can approach this: I want to know how to set the default value for that tank hidden field. Here is my function to show/save the form so far: If you have already called super(). Having a value of None in that dict will override the field. I am trying to set the field to a certain value after the form is initialized. Form): Email = forms. For fields like ForeignKey that map to model instances, defaults should be the value of the field they reference (pk unless to_field is set) instead of model instances. g. user Aug 6, 2014 · But i am unable to set the fields with the username. models. updated = datetime. S. username form. class CustomForm(forms. The most common is passing a dictionary of initial values when initializing the form in your view. Nov 23, 2025 · Django forms are a powerful tool for handling user input, validation, and data processing. Tried them both before and after form. data['author'] = request. is_valid () EDIT: After trying out Levis Solution it still doesnt work. I have tried doing form. To render your form in a template, see the following section of the django docs which contain a number of examples: Mar 2, 2024 · If it’s not, then you can initialize the value for that form field in the form’s __init__ method Due the fact that value is not a known constant I set initial value to the field which works, however, I don’t know how to get rid of these -----. uorvu ace tjbe usyx befcvy bdj dvrbaa vzecee zuxoq cdly