content: cbv-updateview

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ryan technology From [Classy Class Based Views](http://ccbv.co.uk/projects/Django/2.2/django.views.generic.edit/UpdateView/) `UpdateView` > > View for updating an object, with a response rendered by a template. ## Attributes Two attributes are required to get the template to render. We’ve seen `queryset` before and in [CreateView](/cbv-createview/) we saw `fields`. As a brief refresher * fields: specifies what fields from the model or queryset will be displayed on the rendered template. You can you set `fields` to `__all__` if you want to return all of the fields * success_url: you’ll want to specify this after the record has been updated so that you know the update was made. ## Example views.py class myUpdateView(UpdateView): queryset = Person.objects.all() fields = '__all__' extra_context = { 'type': 'Update' } success_url = reverse_lazy('rango:list_view') urls.py path('update_view/<int:pk>', views.myUpdateView.as_view(), name='update_view'), \<template>.html {% block content %} <h3>{{ type }} View</h3> {% if type == 'Create' %} <form action="." method="post"> {% else %} <form action="{% url 'rango:update_view' object.id %}" method="post"> {% endif %} {% csrf_token %} <table> {{ form.as_p }} </table> <button type="submit">SUBMIT</button> </form> {% endblock %} ## Diagram A visual representation of how `UpdateView` is derived can be seen here: ![UpdateView](https://yuml.me/diagram/plain;/class/%5BSingleObjectTemplateResponseMixin%7Bbg:white%7D%5D%5E-%5BUpdateView%7Bbg:green%7D%5D,%20%5BTemplateResponseMixin%7Bbg:white%7D%5D%5E-%5BSingleObjectTemplateResponseMixin%7Bbg:white%7D%5D,%20%5BBaseUpdateView%7Bbg:white%7D%5D%5E-%5BUpdateView%7Bbg:green%7D%5D,%20%5BModelFormMixin%7Bbg:white%7D%5D%5E-%5BBaseUpdateView%7Bbg:white%7D%5D,%20%5BFormMixin%7Bbg:white%7D%5D%5E-%5BModelFormMixin%7Bbg:white%7D%5D,%20%5BContextMixin%7Bbg:white%7D%5D%5E-%5BFormMixin%7Bbg:white%7D%5D,%20%5BSingleObjectMixin%7Bbg:white%7D%5D%5E-%5BModelFormMixin%7Bbg:white%7D%5D,%20%5BContextMixin%7Bbg:white%7D%5D%5E-%5BSingleObjectMixin%7Bbg:white%7D%5D,%20%5BProcessFormView%7Bbg:white%7D%5D%5E-%5BBaseUpdateView%7Bbg:white%7D%5D,%20%5BView%7Bbg:lightblue%7D%5D%5E-%5BProcessFormView%7Bbg:white%7D%5D.svg) ## Conclusion A simple way to implement a form to update data in a model. Step 3 for a CR **U** D app is now complete! 2019-12-08 cbv-updateview From [Classy Class Based Views](http://ccbv.co.uk/projects/Django/2.2/django.views.generic.edit/UpdateView/) `UpdateView` > > View for updating an object, with a response rendered by a template. ## Attributes Two attributes are required to get the template to render. We’ve seen `queryset` before and in [CreateView](/cbv-createview/) we saw `fields`. As a brief refresher * fields: specifies what fields from the … CBV - UpdateView https://www.ryancheley.com/2019/12/08/cbv-updateview/