Get Django API data from a non-static url using Ajax-Jquery [Without REST Framework]-CodePudding

In my server-side app created with Django, I need to show articles based on the url, which contains year, month and user_id of articles. blog/1/2022/8 should shows all articles of august.

In client-side app (Jquery), I have to call an API which returns all articles filtered by year and month.

How can I set the url in ajax with the variable informations of year and month?

urls.py (I have to use these urlpatterns):

app_name = 'blog'

urlpatterns = [
    #link to API
    path('API/<int:user_id>/<int:year>/<int:month>', views.get_articles, name='get_articles'),
    
    #link to html file
    path('<int:user_id>/<int:year>/<int:month>', views.index, name='index'),
]

Model:

from django.contrib.auth.models import User

class Article(models.Model):
    author =  models.ForeignKey(User, on_delete=models.CASCADE)
    pub_date = models.DateTimeField()
    title = models.CharField(max_length=50)
    content = models.TextField()

    def __str__(self):
        return self.title

    def get_year(self):
        return self.pub_date.year

    def get_month(self):
        return self.pub_date.month

Views:

def index(request, **kwargs):
    return render(request, template_name='blog/index.html', context={'user_id':kwargs.get('user_id')})

#return json data with articles filtered by year and month of url
def get_articles(request, **kwargs):
    articles = Article.objects.filter(
        pub_date__year = kwargs.get('year'),
        pub_date__month = kwargs.get('month'),
    ).values('title','author','pub_date')

    data = {
        'articles' : list(articles)
    }
    return JsonResponse(data)

index.html:

{% block content %}
<div >
    <br><h3>Articoli</h3>
    
    <div id="article_list"></div>
</div>
{% endblock content %}

blog.js:

$(document).ready(function(){
    $.ajax({
        url: WHICH URL?,
        dataType:'json',
        success: function(data){
            for(var i=0; i < data.length; i  ){
                var item = $('<p>ID: '  data[i].id  '<br>Titolo: '  data[i].title  '<br>Autore: '  
                    data[i].author    '<br>Data: '   data[i].pub_date  '</p>');
                $('#article_list').append(item);
            }
        }
    });
});

Bonus question: I should serialize data used by API, but How can I do without rest_framework?

If you are wondering why without REST Framework, It's for educational purpose.

CodePudding user response：

First you need to clean the urlpatterns

urlpatterns = [
    # API url
    path('api/<int:author_id>/<int:year>/<int:month>/', views.get_articles, name='get_articles'),
    
    # view url
    path('<int:user_id>/', views.index, name='index'),
]

For your API view, you can use check if request is request.is_ajax() then do something within the if statement block.

def get_articles(request, author_id, year, month):
    if request.is_ajax():
        articles = Article.objects.filter(
            author_id=author_id,
            pub_date__year=year,
            pub_date__month=month,
        ) 

        data = {
            'articles' : list(articles)
        }
        return JsonResponse(data)
    else:
        raise Http404

Now you can use the api endpoint with AJAX as follows

$(document).ready(function(){
    $.ajax({
        url: `localhost:8000/api/${1}/${2022}/${8}/`,
        dataType:'json',
        success: function(data){
            for(var i=0; i < data.length; i  ){
                var item = $('<p>ID: '  data[i].id  '<br>Titolo: '  data[i].title  '<br>Autore: '  
                    data[i].author    '<br>Data: '   data[i].pub_date  '</p>');
                $('#article_list').append(item);
            }
        }
    });
});

CodePudding user response：

This is one possible solution, after the contribution of Mathews Musukuma in answers.

urls.py

#link to html files
path('<int:user_id>/<int:year>/<int:month>', views.index, name='index'),
#link to api
path('api/blog/<int:user_id>/<int:year>/<int:month>', views.get_articles, name='get_articles'),

I edited the view get_article() which creates the JSON file with objects. The is_ajax() method suggested is deprecated, so I overwrote it like this:

def is_ajax(request):
    return request.META.get('HTTP_X_REQUESTED_WITH') == 'XMLHttpRequest'

def get_articles(request, **kwargs):
    if is_ajax(request=request):
        articles = Article.objects.filter(
            pub_date__year = kwargs.get('year'),
            pub_date__month = kwargs.get('month'),
        ).values('id','title','author','pub_date')

        data = {
            'articles': list(articles),
            'path_info': {
                    'month': kwargs.get('month'),
                    'year': kwargs.get('year'),
                    'user_id': kwargs.get('user_id'),
            }   
        }
        
        return JsonResponse(data, safe=False)
    else:
        raise Http404

In jquery I used window.location (https://stackoverflow.com/a/4944460/16057975) to get the current url. So I edited it to match the correct url of api.

$(document).ready(function(){
    $url = window.location.pathname
    $url_api = 'http://127.0.0.1:8000/api' $url
    $.ajax({
        data: $(this).serialize(),
        url: $url_api,
        dataType:'json',
        success: function(data){
           ...
        }
    });
});