Question

我的模型上有一个保存方法，我想用它来验证字段（我之前在我的视图中做了这个，但它只是凌乱！）。我保存对象而不是表单，因为我在表单验证方面遇到了一些困难。

之前我还没有使用过save方法，但是我假设你在使用.save（）命令时会触发它们？我根本没有触发...另外根据我的理解，当你使用is_valid（）时，表格会运行一个clean（）方法，所以这对我有用吗？

以下是我使用ajax保存对象的视图

@login_required
def createtimesheet(request):
    if request.method == "POST":
        print "creating timesheet"
        # Get the person from the previous view
        person_object = request.session.get('person')
        person = Person.objects.get(id=person_object)
        # get the POST data
        start_date = request.POST.get('datestart')
        end_date = request.POST.get('dateend')
        start_date_formatted = datetime.strptime(start_date, "%m/%d/%Y")
        end_date_formatted = datetime.strptime(end_date, "%m/%d/%Y")
        start_date_print = start_date_formatted.strftime("%B")[0:3] + ". " + start_date_formatted.strftime("%d") + ", " + start_date_formatted.strftime("%Y")
        end_date_print = end_date_formatted.strftime("%B")[0:3] + ". " + end_date_formatted.strftime("%d") + ", " +  end_date_formatted.strftime("%Y")

        response_data = {}

        # create our messages
        message = ""
        error = ""

        todays_date = datetime.now()
        print_date = todays_date.strftime("%A")      

        # now we can create the timesheet!
        peach = TimeSheet(start_date=start_date_formatted, end_date=end_date_formatted, person_id=person)
        # need an if valid.....? 
        peach.save()
        message = "Created new timesheet"

        response_data['startdate'] = start_date_print
        response_data['enddate'] = end_date_print
        response_data['status'] = peach.status
        print response_data

        context = {
            "person": person,
            "message": message,
            "error": error,
            "print_date": print_date,
            "todays_date": todays_date,
        }

        return JsonResponse(response_data)

这是我尝试编写保存方法的地方......我计划使用更长的验证功能来检查日期是否在特定日期，但是现在我只想得到这个工作。

class TimeSheet(models.Model):

    O = "Open"
    S = "Submitted"
    A = "Approved"
    R = "Needs review"

    STATUS_CHOICES = (
    (O, "Open"),
    (S, "Submitted"),
    (A, "Approved"),
    (R, "Needs Reviewing"),
    )

    start_date = models.DateField()
    end_date = models.DateField()
    person_id = models.ForeignKey(Person)
    status = models.CharField(max_length= 50, default="Open", choices=STATUS_CHOICES)
    submitted_id = models.IntegerField(default=0)
    approved_id = models.IntegerField(default=0)
    submitted_date = models.DateTimeField(auto_now_add=True, blank=True)
    approved_date = models.DateTimeField(auto_now_add=True, blank=True)

    # def __str__(self):
    #   return self.id

    def get_absolute_url(self):
        return reverse('tande:timesheet', kwargs={'id': self.id})

    def __init__(self, *args, **kwargs):
        print "initiating a timesheet"
        super(TimeSheet, self).__init__(*args, **kwargs)

    def save(self, *args, **kwargs):
        print "something is trying to save!"
        ok_to_continue = True
        start_date = self.start_date
        end_date = self.end_date
        if ok_to_continue:
            if end_date < start_date:
                error = "Start date must be before end date"
                ok_to_continue = False
        if ok_to_continue:
            super(TimeSheet, self).save(*args, **kwargs)
        else: 
            print "def save did not work"

谢谢！

编辑：这是ajax调用

$( document ).ready(function()  {

$('#timesheet-form').on('submit', function(event){
    event.preventDefault();
    console.log("add a timesheet");
    createtimesheet();
});

function createtimesheet() {
    console.log("create timesheet is working!")
    $.ajax({
        url : "{% url 'tande:createtimesheet' %}",
        type: "POST",
        data: { datestart : $('#start').val(), dateend : $('#end').val()},

        success : function(json) {
            $('#start').val('');
            $('#end').val('');

            console.log(json);
            var html = '<tr><td>'+json.startdate+'</td><td>'+json.enddate+'</td><td>'+json.status+'</td><</tr>';
            console.log("success"); 
            // $('div#talk').html(html);
            $('#timesheet-list').append(html);
            console.log(html)
            overlay();
        },

        error : function(xhr,errmsg,err) {
            // $('#results').html("<div class='alert-box alert radius' data-alert>Oops! We have encountered an error: "+errmsg+
            //     " <a href='#' class='close'>&times;</a></div>"); // add the error to the dom
            console.log("uh oh"); 
            }
        });
    };
})

网址：

from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^people/$', views.people, name='people'),
    url(r'^people/create_person/$', views.create_person, name='create_person'),
    url(r'^(?P<person_id>[0-9]+)/person/$', views.person, name='person' ),
    url(r'^person/createtimesheet/$', views.createtimesheet, name='createtimesheet' ),

    url(r'^(?P<timesheet_id>[0-9]+)/person/timesheet/$', views.timesheet, name='timesheet' ),

]

Answer 1

表单ID没有匹配ajax调用中的id ...

html中的

id是＆＃39;创建时间表格式＆＃39;而ajax正在调用＆＃39; timesheet-form＆＃39;

-.-

Save方法不会在对象保存时触发

1 个答案: