小编Rob*_*b B的帖子

我对AngularJS的$ http有一个奇怪的行为,并没有真正理解transformResponse是如何工作的(文档在这一点上有点亮).

    WebAssets.get = function () {
        return $http.get('/api/webassets/list', {
            transformResponse: [function (data, headersGetter) {
                // not sure what to do here?!
                return data;
            }].concat($http.defaults.transformResponse) // presume this isn't needed, added for clarity
        }).then(function (response) {
            return new WebAssets(response.data);
        });
    };

api返回一个对象数组:

[{"webasset_name": "...", "application_id": "...", "etc": "..."}, ... ]

但是当transformResponse做了它的恶行时,数据已经变成了一个索引对象:

{"0":{"webasset_name":"...","application_id":"...", "etc": "..."}, "1":....}

我想保留原始数据结构(对象数组).

在localhost:8000上运行django dev服务器,在localhost:3000上运行nodejs服务器.我想将json导入nodejs服务器,但我收到此错误:

XMLHttpRequest无法加载 http://127.0.0.1:8000/api/presentation/?format=json.Access-Control-Allow-Origin不允许使用origin http:// localhost:3000

这是我第一次涉足跨领域的乐趣,所以我很想走出我的深度.

我已将此添加到节点(expressjs)中的路由中.

app.all('/', function(req, res){
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "X-Requested-With");
  res.render('index', {
    title: '...'
  });
});

我错过了什么/做错了什么？

curl --dump-header - -H "Content-Type: application/json" -X POST --data '{"latlong": "test"}' http://localhost:8000/geo/api/geolocation/

以上工作正常,但当我尝试在下面的ajax中复制POST时,我得到500错误.

$.ajax({
  type: 'POST',
  url: 'http://localhost:8000/geo/api/geolocation/',
  data: '{"latlong": "test"}',
  success: latlongSaved(),
  dataType: "application/json",
  processData:  false,
});

错误信息是:

{"error_message": "The format indicated 'application/x-www-form-urlencoded' had no available deserialization method. Please check your ``formats`` and ``content_types`` on your Serializer." .... }

值得注意的是这是跨域的,我正在使用通过git:gist找到的django-crossdomainxhr-middleware.py

如果我向ajax调用添加内容类型,如下所示:

contentType: "application/json"

我收到此错误:

XMLHttpRequest cannot load http://localhost:8000/geo/api/geolocation/. Request header field Content-Type is not allowed by Access-Control-Allow-Headers.
Request URL:http://localhost:8000/geo/api/geolocation/
Request Method:OPTIONS
Status Code:200 OK
Request Headersview source
Access-Control-Request-Headers:Origin, Content-Type, …

我正在尝试创建一个具有重复纹理的长走廊.如何添加重复纹理并以直角旋转对象(在本例中为平面)以创建走廊墙和天花板？

var texture, material, plane;

texture = THREE.ImageUtils.loadTexture( "../img/texture.jpg" );
texture.wrapT = THREE.RepeatWrapping;  // This doesn't seem to work;
material = new THREE.MeshLambertMaterial({ map : texture });
plane = new THREE.Mesh(new THREE.PlaneGeometry(400, 3500), material);
plane.doubleSided = true;
plane.position.x = 100;
plane.rotation.z = 2;  // Not sure what this number represents.
scene.add(plane);

inuse当我保存ModelForm时,我想将BooleanField设置为True(我在管理区域之外使用表单),我不确定如何做到这一点.

楷模:

class Location(models.Model):
    place = models.CharField(max_length=100)
    inuse = models.BooleanField()

class Booking(models.Model):
    name = models.CharField(max_length=100, verbose_name="Your name*:")
    place = models.ManyToManyField(Location, blank=True, null=True)

形式:

class BookingForm(ModelForm):

    class Meta:
        model = Booking

        def save(self, commit=True):
            booking = super(BookingForm, self).save(commit=False)
            if commit:
                booking.save()
                self.save_m2m()
                for location in booking.place.all():
                    location.inuse = True
                    print location #nothing prints
                    location.save()

视图:

def booking(request):
    form = BookingForm()
    if request.method == 'POST':
        form = BookingForm(request.POST)
        if form.is_valid():
            form.save()
        else:
            form = form

        return render_to_response('bookingform.html', {
                'form': form,
            }) …

我有一个后端渲染模板,它返回一个JSON对象,其中包含一个需要一些动态数据绑定的字符串,例如......

sampleLogic = {
  "1": "Sample static text and some {{ dynamic_text }}." 
}

默认情况下,字符串是转义的,在angular中转换dynamic_text以绑定到$ scope.dynamic_text的最佳方法是什么？

JS:

 var sampleLogic = {
    "1": "Sample static text and some {{ dynamic_text }}."
};

function parseMe($scope) {
    $scope.copy = sampleLogic['1'];
    $scope.dynamic_text = "dynamic text woooot";
}

HTML:

<div ng-app>
    <div ng-controller="parseMe">
        <div ng-bind-html-unsafe="copy"></div>
    </div>
</div>

小提琴:http: //jsfiddle.net/RzPM3/

models.py

class Category(models.Model):
    name = models.CharField(max_length=50)

class SubCatergory(models.Model):
    parent_category = models.ForeignKey(Category)
    name = models.CharField(max_length=100)

views.py

def all_products(request):
c = Category.objects.all()
s = SubCatergory.objects.all()

return render_to_response('all_products.html',
                          {'c':c, 's':s})

all_products.html

{% for category in c %}
    <h1>{{ category.name }}</h1>
    <ul>
        {% for sub in s  %}
        {% if category.id == sub.parent_category.id %}
            <li>{{ sub.name }}</li>
        {% endif %}
        {% endfor %}
    </ul>
{% endfor %}

只是想知道以上是否是外键查询的最佳实践.我在模板级别进行过滤(如果是category.id == sub ...),我应该将其移动到模型或视图级别吗？

顶部边框为6px和绿色.左,右和底1px #ccc.1px边框正在流入6px,请参阅小提琴示例. http://jsfiddle.net/AzHUt/34/

div汤以外的任何解决方案？

请原谅我的新手问题,但如何转换:

[<Location: London>]或[<Location: Edinburgh>, <Location: London>] 等

成:

'伦敦'或'爱丁堡,伦敦'

将其置于上下文中的一些背景信息:

Models.py:

class Location(models.Model):
    place = models.CharField(max_length=100)

    def __unicode__(self):
        return self.place

class LocationForm(ModelForm):
    class Meta:
        model = Location

forms.py

class BookingForm(forms.Form):  
    place = forms.ModelMultipleChoiceField(queryset=Location.objects.all(), label='Venue/Location:', required=False)

views.py

def booking(request):
    if request.method == 'POST':
        form = BookingForm(request.POST) 
        if form.is_valid():
                place = form.cleaned_data['place'] 
                recipients.append(sender)
                message = '\nVenue or Location: ' + str(place)
                send_mail('Thank you for booking', message, sender, recipients)
)

在内部管理员我想要list_display一个模型包括get_absolute_url和可点击.目前它只是显示/x/(x是ID).任何快速修复？

模型:

def get_absolute_url(self):  
    return "/%i/" % self.id

管理员:

list_display = ('name', 'get_absolute_url')