django-admin - how to modify ModelAdmin to create multiple objects at once?

Question

let's assume that I have very basic model

class Message(models.Model):
      msg = models.CharField(max_length=30)

this model is registered with admin module:

class MessageAdmin(admin.ModelAdmin):
    pass
admin.site.register(Message, MessageAdmin)

Currently when I go into the admin interface, after clicking "Add message" I have only one form where I can enter the msg.

I would like to have multiple forms (formset perhaps) on the "Add page" so I can create multiple messages at once. It's really annoying having to click "Save and add another" every single time.

Ideally I would like to achieve something like InlineModelAdmin but it turns out that you can use it only for the models that are related to the object which is edited.

What would you recommend to use to resolve this problem?

Answer 1

This may not be exactly what you are looking for, but if you want to create multiple objects at the same time you could to somehthing like this:

#In /forms.py
MessageAdminForm(forms.ModelForm):
    msg = CharField(max_length=30)
    count = IntegerField()

#In /admin.py
from app.admin import MessageAdminForm
MessageAdmin(admin.ModelAdmin):
    form = MessageAdminForm
    fieldsets = (
        (None, {
            'fields' : ('msg','count')    
         }),)
    def save_model(self, request, obj, form, change):
        obj.msg = form.cleaned_data['msg']
        obj.save()
        for messages in range(form.cleaned_data['count']):
            message = Message(msg=form.cleaned_data['msg'])
            message.save()

Basicly what you are doing is creating a custom form for your admin template, which ask the user how many times the object shall be created. The logic is than interpreted in the save_model method.