[Answered ]-How to read/write input fields in Django-admin tabular inlines using ajax?

urls.py

from django.conf import settings


urlpatterns = patterns('',
    (r'^json/tshirt/$', json_order),
    (r'^site_media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT}),
    ...
)

views.py

from django.core import serializers


def json_order(request):
    search = request.GET.get('tshirt_id')
    if search:
        result = Tshirt.objects.filter(id=search)
        return HttpResponse(serializers.serialize('json', result, fields=('default_wording')), mimetype='application/json')
    return HttpResponse()

admin.py

class Order_Inline(TabularInline):
    model = Order_item
    fk_name = 'order'


class Order_Admin(ModelAdmin):
    inlines = [Order_Inline,]
    class Media:
        js = ('/media/js/jquery.js', '/site_media/js/tshirt.js',)

_settings.MEDIA_ROOT_/js/tshirt.js

$(document).ready(function() {
    $(".module").delegate("[id$=-tshirt]", "change", function() {
        var row = $(this).attr("id").split('id_order_item-')[1].split("-tshirt")[0];
        var tshirt_id = $(this).val();
        var data = {"tshirt_id":tshirt_id};
        $.getJSON("/json/tshirt", data, function(data) {
            var dw = data[0]["fields"]["default_wording"];
            $("input[id='id_item-"+row+"-wording']").val(dw);
        });
    });
});