title: Customize Django Admin: Add More Than One Default Inline on Parent Add_View
body: <p>I have an admin model with a few inline models included with it (see the <strong>ResourceUserAdmin</strong> model below for full class):</p>
  
  <pre class="lang-py prettyprint-override"><code>    inlines = [ 
              ResourceLocationInlineAdmin ,
              ResourceCategoryInlineAdmin , 
              ResourceStageInlineAdmin ,
            ]
  </code></pre>
  
  <p>When a user clicks to create a new <strong>ResourceUserAdmin</strong>  I want the inlines of the class <strong>ResourceCategoryInlineAdmin</strong> to get initial values -- note that these relationships will not be saved to the database. I've tried to override parts of the <strong>add_view</strong> function to get what i want but I can't figure out how to pass multiple inline forms back to parent. </p>
  
  <p>Any ideas on how to achieve this?</p>
  
  <p><strong>Models</strong></p>
  
  <pre class="lang-py prettyprint-override"><code>class ResourceUserAdmin( admin.ModelAdmin ):
      inlines = [ 
              ResourceLocationInlineAdmin ,
              ResourceCategoryInlineAdmin , 
              ResourceStageInlineAdmin ,
            ]
  
      list_display = ( 
                   'user' , 
                   'name' ,
                   'state' ,
                   'email' ,
                   'website' ,
                   'phone' ,
                   'logo_url_link',
      )
  
      search_fields = ( 'name' , 'email' , 'website'  )
  
      list_filter = ( 'name' , 'state' , 'email' , 'website' )
  
      ordering = ( 'name', )
  
       fields = ( 
               'user' , 
               'name' ,
               'state' ,
               'email' ,
               'website' ,
               'phone' ,
               'logo' ,
               'ideal_candidate',
      )
  admin.site.register( ResourceUser, ResourceUserAdmin )
  </code></pre>
  
  <p>Here is the inline model I want to create many by default:</p>
  
  <pre class="lang-py prettyprint-override"><code>class ResourceCategoryInlineAdmin( admin.StackedInline ):
      model = ResourceCategory
      extra = 0
  
  class ResourceCategoryAdmin( admin.ModelAdmin ):
      list_display = ( 'user' ,
                       'category' , )
  
      ordering = ( 'user' , )
      fields = ( 'user' , 'category' )
  
      def formfield_for_foreignkey( self, db_field, *args, **kwargs ):
          if isinstance( db_field, models.ForeignKey ):
              if db_field.name == 'category':
                  kwargs['widget'] = forms.RadioSelect()
          return super( ResourceCategoryAdmin, self).formfield_for_foreignkey( db_field, **kwargs )
  
  admin.site.register( ResourceCategory, ResourceCategoryAdmin )
  </code></pre>