Refs #20910 -- Replaced snippet directive with code-block.

docs/topics/class-based-views/generic-editing.txt

@@ -18,8 +18,8 @@ Basic forms
 
 Given a simple contact form:
 
-.. snippet::
-    :filename: forms.py
+.. code-block:: python
+    :caption: forms.py
 
     from django import forms
 
@@ -33,8 +33,8 @@ Given a simple contact form:
 
 The view can be constructed using a ``FormView``:
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from myapp.forms import ContactForm
     from django.views.generic.edit import FormView
@@ -96,8 +96,8 @@ add extra validation) simply set
 First we need to add :meth:`~django.db.models.Model.get_absolute_url()` to our
 ``Author`` class:
 
-.. snippet::
-    :filename: models.py
+.. code-block:: python
+    :caption: models.py
 
     from django.db import models
     from django.urls import reverse
@@ -112,8 +112,8 @@ Then we can use :class:`CreateView` and friends to do the actual
 work. Notice how we're just configuring the generic class-based views
 here; we don't have to write any logic ourselves:
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from django.urls import reverse_lazy
     from django.views.generic.edit import CreateView, DeleteView, UpdateView
@@ -146,8 +146,8 @@ and :attr:`~django.views.generic.edit.FormMixin.form_class` attributes, an
 
 Finally, we hook these new views into the URLconf:
 
-.. snippet::
-    :filename: urls.py
+.. code-block:: python
+    :caption: urls.py
 
     from django.urls import path
     from myapp.views import AuthorCreate, AuthorDelete, AuthorUpdate
@@ -187,8 +187,8 @@ To track the user that created an object using a :class:`CreateView`,
 you can use a custom :class:`~django.forms.ModelForm` to do this. First, add
 the foreign key relation to the model:
 
-.. snippet::
-    :filename: models.py
+.. code-block:: python
+    :caption: models.py
 
     from django.contrib.auth.models import User
     from django.db import models
@@ -203,8 +203,8 @@ In the view, ensure that you don't include ``created_by`` in the list of fields
 to edit, and override
 :meth:`~django.views.generic.edit.ModelFormMixin.form_valid()` to add the user:
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from django.views.generic.edit import CreateView
     from myapp.models import Author

docs/topics/class-based-views/mixins.txt

@@ -222,8 +222,8 @@ we'll want the functionality provided by
 We'll demonstrate this with the ``Author`` model we used in the
 :doc:`generic class-based views introduction<generic-display>`.
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from django.http import HttpResponseForbidden, HttpResponseRedirect
     from django.urls import reverse
@@ -255,8 +255,8 @@ mixin.
 
 We can hook this into our URLs easily enough:
 
-.. snippet::
-    :filename: urls.py
+.. code-block:: python
+    :caption: urls.py
 
     from django.urls import path
     from books.views import RecordInterest