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Scenario: Hari is creating a product form that should allow users to upload an image. The image size should not exceed 5MB and only PNG/JPG formats are allowed. How should he implement this?

  1. Use FileField with a custom validator that checks file size (5MB max) and allowed extensions (PNG/JPG)

  2. Use ImageField without any validators and handle validation in the view

  3. Use CharField and base64 encode the image data

  4. Use a hidden field and validate on the client side with JavaScript

Show answer & explanation

Correct answer

Use FileField with a custom validator that checks file size (5MB max) and allowed extensions (PNG/JPG)

Explanation

Use FileField with a custom validator that checks file size and extension, or override clean_image() method to validate these constraints.

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All 30 Django Forms and Validation questions

  1. 1.What is the primary purpose of Django Forms?
  2. 2.Which Django class is used to create a form?
  3. 3.What does the is_valid() method do in Django Forms?
  4. 4.Which field type in Django Forms is used for email validation?
  5. 5.What is the purpose of the clean() method in Django Forms?
  6. 6.How do you access form errors in Django?
  7. 7.What does ModelForm do in Django?
  8. 8.Which method is used to render form fields in a Django template?
  9. 9.What is the purpose of the required parameter in Django form fields?
  10. 10.Which validator ensures a field value is within a specific range?
  11. 11.Scenario:
  12. 12.What will be the output of the following Django form code?
  13. 13.Scenario:
  14. 14.What will be the output of the following code?
  15. 15.Scenario:
  16. 16.What will this code output?
  17. 17.Scenario:
  18. 18.What will be the output of the following ModelForm code?
  19. 19.Scenario:
  20. 20.What will this code output?
  21. 21.Understanding Django Form Validation Pipeline and Custom Validators
  22. 22.Django ModelForm Field Exclusion and Customization
  23. 23.Scenario:
  24. 24.Django Form Rendering with Widgets and HTML Attributes
  25. 25.Understanding Form.errors and Non-Field Errors
  26. 26.Django Form Inheritance and Method Resolution Order
  27. 27.Scenario:
  28. 28.Working with Form Bound and Unbound States
  29. 29.Custom Validators and Reusability Across Forms
  30. 30.Scenario: