How to set True as default value for BooleanField on Django

Question

I am using BooleanField in Django  By default  the checkbox generated by it is unchecked state  I want the state to be checked by default  How do I do that

User · Answer

In DJango 3 0 the default value of a BooleanField in model py is set like this   class model name models Model   example name   models BooleanField default False

User · Answer

from django db import models  class Foo models Model       any field   models BooleanField default True

User · Answer

I found the cleanest way of doing it is this  Tested on Django 3 1 5 class MyForm forms Form       my boolean   forms BooleanField required False  initial True   I found the answer here

User · Answer

If you re just using a vanilla form  not a ModelForm   you can set a Field initial value   https   docs djangoproject com en 2 2 ref forms fields  django forms Field initial   like  class MyForm forms Form       my field   forms BooleanField initial True    If you re using a ModelForm  you can set a default value on the model field   https   docs djangoproject com en 2 2 ref models fields  default    which will apply to the resulting ModelForm  like  class MyModel models Model       my field   models BooleanField default True    Finally  if you want to dynamically choose at runtime whether or not your field will be selected by default  you can use the initial parameter to the form when you initialize it   form   MyForm initial   my field  True

User · Answer

I am using django  1 11  The answer get the most vote is actually wrong  Checking the document from django  it says      initial -- A value to use in this Field s initial display  This value           is not used as a fallback if data isn t given    And if you dig into the code of form validation process  you will find that  for each fields  form will call it s widget s value from datadict to get actual value  so this is the place where we can inject default value   To do this for BooleanField  we can inherit from CheckboxInput  override default value from datadict and init function   class CheckboxInput forms CheckboxInput       def   init   self  default False   args    kwargs           super CheckboxInput  self    init    args    kwargs          self default   default      def value from datadict self  data  files  name           if name not in data              return self default         return super CheckboxInput  self  value from datadict data  files  name    Then use this widget when creating BooleanField   class ExampleForm forms Form       bool field   forms BooleanField widget CheckboxInput default True   required False

[python] How to set True as default value for BooleanField on Django?

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