$ .get（）コールバック（？）でエラーが発生します

Question

私はこのような多くの質問があることを知っていますが、私の問題の解決策を見つけることができません。

MyScript.js：

$('#id_tags').keyup(function(){ 
    var query; 
    query = $(this).val(); 
    $.get('/blog/suggest-category/', {suggestion: query}, function(data){ 
     console.log('data') 
     $('#suggestion_div').html(data); 
    }); 
    }); 

マイview.py：

def get_category_list(max_results=0, starts_with=''): 
    print('get_category_list') 
    cat_list = [] 
    if starts_with: 
     cat_list = Tag.objects.filter(slug__istartswith=starts_with) 
    if max_results > 0: 
     if len(cat_list) > max_results: 
      cat_list = cat_list[:max_results] 
    return cat_list 


def suggest_category(request): 
    print('suggest_category') 
    cat_list = [] 
    starts_with = '' 
    if request.method == 'GET': 
     starts_with = request.GET['suggestion'] 
     cat_list = get_category_list(5, starts_with) 
    print('cat_list', cat_list) 
    #return render(request, 'blog/suggest_tag.html', {'suggestions': cat_list }) 
    return cat_list 

query、MyScript.jsでは文字列です。ビューは（私はprint('cat_list', cat_list)を読むことができる）と呼ばれるが、それはエラーをスローされます。リストが空の場合

を=>AttributeError: 'list' object has no attribute 'get'

ときではありません（例：cat_list [<Tag: Home>]）=>ValueError: too many values to unpack (expected 2)

空cat_listと

トレースバックエラー：

cat_list [] 
Internal Server Error: /blog/suggest-category/ 
Traceback (most recent call last): 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\core\handlers\base. 
py", line 235, in get_response 
    response = middleware_method(request, response) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\middleware\clickjac 
king.py", line 31, in process_response 
    if response.get('X-Frame-Options') is not None: 
AttributeError: 'list' object has no attribute 'get' 
[28/Dec/2017 16:25:08] "GET /blog/suggest-category/?suggestion= HTTP/1.1" 500 14 
867 

または空でないcat_listと：

cat_list [<Tag: Home>] 
Internal Server Error: /blog/suggest-category/ 
Traceback (most recent call last): 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\core\handlers\base. 
py", line 235, in get_response 
    response = middleware_method(request, response) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\middleware\clickjac 
king.py", line 31, in process_response 
    if response.get('X-Frame-Options') is not None: 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\query.py" 
, line 378, in get 
    clone = self.filter(*args, **kwargs) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\query.py" 
, line 790, in filter 
    return self._filter_or_exclude(False, *args, **kwargs) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\query.py" 
, line 808, in _filter_or_exclude 
    clone.query.add_q(Q(*args, **kwargs)) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\sql\query 
.py", line 1243, in add_q 
    clause, _ = self._add_q(q_object, self.used_aliases) 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\sql\query 
.py", line 1269, in _add_q 
    allow_joins=allow_joins, split_subq=split_subq, 
    File "D:\Python\Envs\possedimenti\lib\site-packages\django\db\models\sql\query 
.py", line 1146, in build_filter 
    arg, value = filter_expr 
ValueError: too many values to unpack (expected 2) 
[28/Dec/2017 16:08:23] "GET /blog/suggest-category/?suggestion=h HTTP/1.1" 500 1 
5797 

たぶんTagモデルを助けることができる、それがtaggitから来ている：

@python_2_unicode_compatible 
class TagBase(models.Model): 
    name = models.CharField(verbose_name=_('Name'), unique=True, max_length=100) 
    slug = models.SlugField(verbose_name=_('Slug'), unique=True, max_length=100) 

    def __str__(self): 
     return self.name 

    class Meta: 
     abstract = True 

    def save(self, *args, **kwargs): 
     if not self.pk and not self.slug: 
      self.slug = self.slugify(self.name) 
      from django.db import router 
      using = kwargs.get("using") or router.db_for_write(
       type(self), instance=self) 
      # Make sure we write to the same db for all attempted writes, 
      # with a multi-master setup, theoretically we could try to 
      # write and rollback on different DBs 
      kwargs["using"] = using 
      # Be oportunistic and try to save the tag, this should work for 
      # most cases ;) 
      try: 
       with atomic(using=using): 
        res = super(TagBase, self).save(*args, **kwargs) 
       return res 
      except IntegrityError: 
       pass 
      # Now try to find existing slugs with similar names 
      slugs = set(
       self.__class__._default_manager 
       .filter(slug__startswith=self.slug) 
       .values_list('slug', flat=True) 
      ) 
      i = 1 
      while True: 
       slug = self.slugify(self.name, i) 
       if slug not in slugs: 
        self.slug = slug 
        # We purposely ignore concurrecny issues here for now. 
        # (That is, till we found a nice solution...) 
        return super(TagBase, self).save(*args, **kwargs) 
       i += 1 
     else: 
      return super(TagBase, self).save(*args, **kwargs) 

    def slugify(self, tag, i=None): 
     slug = default_slugify(unidecode(tag)) 
     if i is not None: 
      slug += "_%d" % i 
     return slug 


class Tag(TagBase): 
    class Meta: 
     verbose_name = _("Tag") 
     verbose_name_plural = _("Tags") 
     app_label = 'taggit' 

編集： 私は私のview.pyを変更：

def suggest_category(request): 
    print('suggest_category') 
    cat_list = [] 
    starts_with = '' 
    if request.method == 'GET': 
     starts_with = request.GET['suggestion'] 
     cat_list = get_category_list(5, starts_with) 
    print('cat_list', cat_list) 
    return render(request, 'blog/suggest_tag.html', {'suggestions': cat_list }) 

、ここでは私のテンプレートsuggest_tag.htmlです：

{% load i18n %} 

    <ul> 
     {% if suggestions %} 
      {% for c in suggestions %} 
       <li>{{ c.name }}</li> 
      {% endfor %} 
     {% else %} 
      <li>{% trans "There are no tag present." %}</li> 
     {% endif %} 
    </ul> 

今作成した部門に書き込みを行います（id='suggestion_div'）それで十分です。

/編集

Answer 1

あなたのエラーは、あなたのビューからのHttpResponseではない何かを返すことによって引き起こされます。

JavaScriptから送信したいものがコードから正確には分かりませんが、それが何であれ、HttpResponseまたはそのサブクラスにラップする必要があります。おそらくあなたはクエリーセットを連載したいのですか？