Laravel's dd() equivalent in django

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I am new in Django and having a hard time figuring out how to print what an object have inside. I mean type and value of the variable with its members inside. Just like Lara

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眼角桃花

2021-01-01 17:42
You are looking for __dict__ property or dir()
```
print(object.__dict__)
```
Use pprint for beautified output
```
from pprint import pprint
pprint(dir(object))
```
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醉梦人生

2021-01-01 17:47
Raise an exception. Assuming you've got debug on you'll see the exception message. It's crude but it's helped me in the past.

Just:
```
 raise Exception("I want to know the value of this: " + myvariable_as_a_string)
```
Other answers & commenters ignored the crucial "and die" part of the dd() function, which prevents things like subsequent redirects.
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执笔经年

2021-01-01 17:57

Actually Django does not provide this specialized function. So in order to get rid of this problem, I made a custom dd() type function and use this in all Django projects. Perhaps it can help someone.

Let's assume, we have a library folder named app_libs and in that folder we have a library file named dump.py. Like app_libs > dump.py:

from django.core import serializers
from collections.abc import Iterable
from django.db.models.query import QuerySet
from django.core.exceptions import ObjectDoesNotExist


def dd(request, data=''):
    try:
        scheme      = request.scheme
        server_name = request.META['SERVER_NAME']
        server_port = request.META['SERVER_PORT']
        remote_addr = request.META['REMOTE_ADDR']
        user_agent  = request.META['HTTP_USER_AGENT']
        path        = request.path
        method      = request.method
        session     = request.session
        cookies     = request.COOKIES

        get_data = {}
        for key, value in request.GET.lists():
            get_data[key] = value

        post_data = {}
        for key, value in request.POST.lists():
            post_data[key] = value

        files = {}
        for key, value in request.FILES.lists():
            files['name'] = request.FILES[key].name
            files['content_type'] = request.FILES[key].content_type
            files['size'] = request.FILES[key].size

        dump_data = ''
        query_data = ''
        executed_query = ''
        if data:
            if isinstance(data, Iterable):
                if isinstance(data, QuerySet):
                    executed_query = data.query
                    query_data = serializers.serialize('json', data)
                else:
                    dump_data = dict(data)
            else:
                query_data = serializers.serialize('json', [data])


        msg = f'''
            <html>
                <span style="color: red;"><b>Scheme</b></span>        : <span style="color: blue;">{scheme}</span><br>
                <span style="color: red;"><b>Server Name</b></span>   : <span style="color: blue;">{server_name}</span><br>
                <span style="color: red;"><b>Server Port</b></span>   : <span style="color: blue;">{server_port}</span><br>
                <span style="color: red;"><b>Remote Address</b></span>: <span style="color: blue;">{remote_addr}</span><br>
                <span style="color: red;"><b>User Agent</b></span>    : <span style="color: blue;">{user_agent}</span><br>
                <span style="color: red;"><b>Path</b></span>          : <span style="color: blue;">{path}</span><br>
                <span style="color: red;"><b>Method</b></span>        : <span style="color: blue;">{method}</span><br>
                <span style="color: red;"><b>Session</b></span>       : <span style="color: blue;">{session}</span><br>
                <span style="color: red;"><b>Cookies</b></span>       : <span style="color: blue;">{cookies}</span><br>
                <span style="color: red;"><b>Get Data</b></span>      : <span style="color: blue;">{get_data}</span><br>
                <span style="color: red;"><b>Post Data</b></span>     : <span style="color: blue;">{post_data}</span><br>
                <span style="color: red;"><b>Files</b></span>         : <span style="color: blue;">{files}</span><br>
                <span style="color: red;"><b>Executed Query</b></span>: <span style="color: blue;"><br>{executed_query}</span><br>
                <span style="color: red;"><b>Query Data</b></span>    : <span style="color: blue;"><br>{query_data}</span><br>
                <span style="color: red;"><b>Dump Data</b></span>     : <span style="color: blue;"><br>{dump_data}</span><br>
            </html>
        '''

        return msg
    except ObjectDoesNotExist:
        return False

when you need to use this function, just call it like this in any views.py:

from django.http import HttpResponse
from django.shortcuts import render
from django.views import View

from app_libs.dump import dd
from .models import Products

class ProductView(View):
    def get(self, request):
        data = {}
        data['page_title'] = 'products'
        data['products'] = Products.objects.get_all_product()

        template = 'products/collections.html'

        dump_data = dd(request, data['products'])
        return HttpResponse(dump_data)

        # return render(request, template, data)

that's it.

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