Let's say I've two models:

class Book(models.Model):name = models.CharField(max_length=50)library = models.ForeignKeyField('Library')class Library(models.Model):name = models.CharField(max_length=50)   address = models.CharField(max_length=50)  tel = models.CharField(max_length=50)  

Is there a nice way to add some html(a readonly input field) between name and address in the Library change_form template?. I'm doing it overriding admin/includes/fieldset.html but it's getting messy and I can't find a way to display the html exactly where I want to. For example, if I want to add html displaying the amount of books that the library has below the name field I woul do this:

{% for field in line %}...{% if field.field.name == 'name' %}{{ field.field }}<div class="form-row total_books"><div><label for="total_books">Total books:</label><input type="text" maxlength="10" name="totbooks" id="totbooks" readonly="readonly"></div></div>{% else %}{{ field.field }}{% endif %}...
{% endfor %}

New solution:

I've found a nicer way I think, but I don't know why am I getting this error: "PresupuestoAdmin.readonly_fields1, 'name' is not a callable or an attribute of PresupuestoAdmin' or found in the model 'Presupuesto' ". It seems that the 'name' field is not added to the form used by the admin.

class FoooAdminForm(forms.ModelForm): name = models.CharField(max_length=100) class Meta: model = Foo class FooAdmin(admin.ModelAdmin): form = FooAdminForm fieldsets = ( (None, { 'fields': ('id', 'name', 'date')}), ) readonly_fields = ('id', 'name') admin.site.register(Foo, FooAdmin) 

models.py:

class Library(models.Model):name = models.CharField(max_length=50)   address = models.CharField(max_length=50)  tel = models.CharField(max_length=50)def book_count(self):return self.book_set.count()

admin.py:

class LibraryAdmin(admin.ModelAdmin): fieldsets = ( (None, { 'fields': ('name', 'book_count', 'address', 'tel' )}), ) readonly_fields = ('book_count',) admin.site.register(Library, LibraryAdmin)