Display a form and the output on the same page - django

This code will display the form. I can input data, submit the data and the data then displays along with the previous input data from the mySQL DB table where the dat is written, but when the data displays the input form goes away (all expect the submit button that is). I've come across this subject here, but could never quite find the answer that worked for me.
**`models.py`**
class UnitPool(models.Model):
# rack = models.ForeignKey(Rack)
# platform = models.ForeignKey(Group)
location = models.CharField(max_length=10, choices=LAB, default='Choose', blank=False)
rack = models.CharField(max_length=10, choices=RACKS, default='Choose', blank=False)
platform = models.CharField(max_length=10, choices = PLATFORM, default='Choose',blank=False)
unit_HW_Serial = models.CharField(max_length=20, blank=False, null=False)
unit_SW_Serial = models.CharField(max_length=20, blank=False, null=False)
unit_SKU = models.CharField(max_length=20, blank=False, null=False)
comments = models.CharField(max_length=64, blank=True, null=True, default='')
def __unicode__(self): # __unicode__ on Python 2
return '%s %s %s %s %s %s' % (self.rack,
self.platform,
self.unit_HW_Serial,
self.unit_SW_Serial,
self.unit_SKU,
self.comments)
class UUTForm(ModelForm):
class Meta:
model = UnitPool
widgets = {
'comments': TextInput(attrs={'size': 10}),
}
fields = ['location','rack', 'platform','unit_HW_Serial','unit_SW_Serial','unit_SKU','comments']
**forms.html**
{% extends "base.html" %}
{% load crispy_forms_tags %}
{% block content %}
<div class="container">
<div class='row'>
<div class='col-md-2'>
{% if title %}
<h1 class='{% if title_align_center %}text-align-center{% endif %}'>{{ title }}</h1>
{% endif %}
<form method='POST' action=''>{% csrf_token %}
{{ form|crispy }}
<input class='btn btn-primary' type='submit' value='Add Unit' />
</form>
</div>
</div>
</div>
{% if queryset %}
{% if rack != '' %}
<div class="container">
<div class="row">
<div class='col-md-8 col-md-offset-3'>
<h1>Unit Data Entered</h1>
<table class='table'>
<td><b>Item</b></td>
<td><b>Location</b></td>
<td><b>Rack#</b></td>
<td><b>Platform</b></td>
<td><b>HW SN</b></td>
<td><b>SW SN</b></td>
<td><b>SKU</b></td>
<td><b>Comment</b></td>
{% for instance in queryset %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ instance.location }}</td>
<td>{{ instance.rack }}</td>
<td>{{ instance.platform }}</td>
<td>{{ instance.unit_HW_Serial }}</td>
<td>{{ instance.unit_SW_Serial }}</td>
<td>{{ instance.unit_SKU }}</td>
<td>{{ instance.comments }}</td>
</tr>
{% endfor %}
</table>
</div>
</div>
</div>
{% endif %}
{% endif %}
{% endblock %}
**views.py**
from django.conf import settings
from django.shortcuts import render
from .models import UnitPool, UUTForm
def labunits(request):
title = 'Enter Info'
form = UUTForm(request.POST or None)
context = {
"title": title,
"form": form
}
if form.is_valid():
instance = form.save(commit=False)
instance.save()
queryset = UnitPool.objects.all().order_by('rack','platform')
context = {
"queryset": queryset
}
return render(request, "labunits/forms.html", context)

You need to pass the form in the context after calling .is_valid() as #Daniel also mentioned.
Since you are not passing the form in the context again after calling the .is_valid() function, the form does not get displayed again in the template.
So, when you are resetting the context, you need to pass the form also.
def labunits(request):
title = 'Enter Info'
form = UUTForm(request.POST or None)
context = {
"title": title,
"form": form
}
if form.is_valid():
instance = form.save(commit=False)
instance.save()
queryset = UnitPool.objects.all().order_by('rack','platform')
context = {
"queryset": queryset,
"form" : form # pass the form in the context
}
return render(request, "labunits/forms.html", context)

Related

For loop in template django with prefetch_related

I got an issue when trying to access values from other models by using prefetch_related
My model:
class testimport(models.Model):
id=models.AutoField(primary_key=True)
so_hd=models.CharField( max_length=50, unique=True)
ten_kh=models.CharField( max_length=500)
tien_dong=models.IntegerField(blank=True, null=True)
created_at=models.DateTimeField(auto_now_add=True)
objects=models.Manager()
def get_absolute_url(self):
return "/chi_tiet_hop_dong/%s/" % self.so_hd
class report(models.Model):
id=models.AutoField(primary_key=True)
so_hd=models.ForeignKey(testimport, on_delete=models.DO_NOTHING, to_field="so_hd")
nhan_vien=models.ForeignKey(Callers, on_delete=models.DO_NOTHING, null=True, blank= True, to_field="admin_id")
noi_dung=models.TextField()
My views:
....
get_contract_detail=testimport.objects.filter(so_hd__in=get_user).order_by("id").prefetch_related().values()
contract=get_contract_detail.filter(so_hd=so_hd).all()
return render(request, "caller_template/contract_detail.html", {"contract":contract,"the_next":the_next,"the_prev":the_prev, "so_hd":so_hd,"form":form,"form1":form1})
If I try to print out the content by values, it is ok:
print(get_contract_detail.filter(so_hd=so_hd).values("so_hd","report__noi_dung"))
In my template:
{% for report in contract %}
{% for content in report.so_hd.all%}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{content.noi_dung}}</td>
</tr>
{% endfor %}
{% endfor %}
There is no content in cells. How can I show the content
Please help
The reason this does not work is because of the use of .values(…) [Django-doc]. Furthermore you did not specify a related_name=… parameter [Django-doc], so that means that you access the reports with .report_set.all():
contract = testimport.objects.filter(
so_hd__in=get_user, so_hd=so_hd
).order_by('id').prefetch_related() # no .values()
context = {
'contract': contract,
'the_next': the_next,
'the_prev': the_prev,
'so_hd': so_hd,
'form': form,
'form1':form1
}
return render(request, 'caller_template/contract_detail.html', context)
and in the template render with .report_set.all:
{% for report in contract %}
{% for content in report.report_set.all %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ content.noi_dung }}</td>
</tr>
{% endfor %}
{% endfor %}

Invite Registered Users to vote in voting app

I'm trying to expand the Django tutorial for a school project and make it into a more usable voting app.
What I want is to allow users to create Polls and invite other registered users by email to vote on their Poll. Only the invited users will be allowed to vote.
My models.py:
class Poll(models.Model):
question_text = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published', auto_now_add=True)
is_active = models.BooleanField(default=True)
activation_date = models.DateTimeField('Activation Date', blank=True, null=True)
expiration_date = models.DateTimeField('Expiration Date', blank=True, null=True)
public_key = models.CharField(max_length=30, blank=True)
hash = models.CharField(max_length=128, blank=True)
timestamp = models.DateTimeField(auto_now=True)
def __str__(self):
return self.question_text
def was_published_recently(self):
now = timezone.now()
return now - datetime.timedelta(days=1) <= self.pub_date <= now
was_published_recently.admin_order_field = 'pub_date'
was_published_recently.boolean = True
was_published_recently.short_description = 'Published recently?'
class Choice(models.Model):
question = models.ForeignKey(Poll, on_delete=models.CASCADE)
choice_text = models.CharField(max_length=200)
votes = models.IntegerField(default=0)
def __str__(self):
return self.choice_text
class EligibleVoters(models.Model):
user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True)
poll = models.ForeignKey(Poll, on_delete=models.CASCADE)
email = models.EmailField(null=True)
I have a Poll table which contains the Poll Title and other information regarding the Poll. I also created a separate Choices table (like in the tutorial) which has a ForeignKey to the Poll table and contains the poll choices.
I figured that in order to invite users as eligible voters I needed a third table with ForeignKeys to the Poll and User tables. So i created one.
I should note that I'm using the build-in user model.
Here's my views.py:
class NewPoll(CreateView):
model = Poll
fields = ['question_text', 'is_active', 'activation_date', 'expiration_date']
success_url = reverse_lazy('voting:index')
def get_context_data(self, **kwargs):
data = super().get_context_data(**kwargs)
if self.request.POST:
data['choices'] = ChoiceFormSet(self.request.POST)
# data['eligible_voters_poll'] = EligibleVotersFormSetPoll(self.request.POST)
# data['eligible_voters_user'] = EligibleVotersFormSetUser(self.request.POST)
#data['eligible_voters'] = EligibleVotersFormSet(self.request.POST)
else:
data['choices'] = ChoiceFormSet()
# data['eligible_voters_poll'] = EligibleVotersFormSetPoll()
# data['eligible_voters_user'] = EligibleVotersFormSetUser()
# data['eligible_voters'] = EligibleVotersFormSet()
return data
def form_valid(self, form):
context = self.get_context_data()
choices = context['choices']
# eligible_voters_poll = context['eligible_voters_poll']
# eligible_voters_user = context['eligible_voters_user']
#eligible_voters = context['eligible_voters']
with transaction.atomic():
self.object = form.save()
if choices.is_valid():
choices.instance = self.object
choices.save()
# if eligible_voters_poll.is_valid() and eligible_voters_user.is_valid():
# eligible_voters_poll.instance = self.object
# eligible_voters_poll.save()
# eligible_voters_user.instance = self.object
# eligible_voters_user.save()
#if eligible_voters.is_valid():
# eligible_voters.instance = self.object
# eligible_voters.save()
return super().form_valid(form)
I have commented the lines that are previous attempt into making it work. Without the commented lines the user is able to create a poll and also create choices. I'm having trouble making the invite part working though.
Here is my forms.py:
class PollForm(ModelForm):
activation_date = forms.DateTimeField(required=False)
expiration_date = forms.DateTimeField(required=False)
class Meta:
model = Poll
fields = ['question_text', 'is_active', 'activation_date', 'expiration_date']
class ChoiceForm(ModelForm):
class Meta:
model = Choice
exclude = ['votes']
ChoiceFormSet = inlineformset_factory(Poll, Choice, form=ChoiceForm, extra=1)
def form_maker(parent2):
class EligibleVotersForm(ModelForm):
# def __init__(self, user, poll, *args, **kwargs):
# self.user = user
# self.poll = poll
# super().__init__(*args, **kwargs)
def save(self, commit=True):
instance = super(EligibleVotersForm, self).save(commit=False)
# instance.parent1 = parent1
instance.parent2 = parent2
if commit:
instance.save()
return instance
class Meta:
model = EligibleVoters
fields = ['email']
return EligibleVotersForm
# EligibleVotersFormSetPoll = inlineformset_factory(Poll, EligibleVoters, form=EligibleVotersForm, extra=1)
# EligibleVotersFormSetUser = inlineformset_factory(User, EligibleVoters, form=EligibleVotersForm, extra=1)
# EligibleVotersFormSet = inlineformset_factory(Poll, EligibleVoters, form=form_maker(User), extra=1)
Here I have commented out again the lines that belong to my failed attempts at making it work. The closer I got it to working is to be able to invite by any email (not just the registered ones, which is what I want) and fill the EligibleVoters table with the emails associated with the poll_id. The user_id column though remained, empty.
Here's my html file:
{% extends 'base.html' %}
{% block content %}
{% load static %}
<h2>Poll Creation</h2>
<div class="col-md-4">
<form action='' method="post">
{% csrf_token %}
{{ form.as_p }}
<table class="table">
{{ choices.management_form }}
{% for form in choices.forms %}
{% if forloop.first %}
<thead>
<tr>
{% for field in form.visible_fields %}
<th>{{ field.label|capfirst }}</th>
{% endfor %}
</tr>
</thead>
{% endif %}
<tr class="{% cycle 'row1' 'row2' %} formset_row1">
{% for field in form.visible_fields %}
<td>
{% if forloop.first %}
{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{% endif %}
{{ field.errors.as_ul }}
{{ field }}
</td>
{% endfor %}
</tr>
{% endfor %}
</table>
<table class="table">
{{ eligible_voters.management_form }}
{% for form in eligible_voters.forms %}
{% if forloop.first %}
<thead>
<tr>
{% for field in form.visible_fields %}
<th>{{ field.label|capfirst }}</th>
{% endfor %}
</tr>
</thead>
{% endif %}
<tr class="{% cycle 'row1' 'row2' %} formset_row2">
{% for field in form.visible_fields %}
<td>
{% if forloop.first %}
{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{% endif %}
{{ field.errors.as_ul }}
{{ field }}
</td>
{% endfor %}
</tr>
{% endfor %}
</table>
<input type="submit" value="Save"/> back to the list
</form>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="{% static 'voting/js/jquery.formset.js' %}"></script>
<script type="text/javascript">
$('.formset_row1').formset({
addText: 'add poll choice',
deleteText: 'remove',
prefix: 'choice_set'
});
$('.formset_row2').formset({
addText: 'add eligible voter',
deleteText: 'remove',
prefix: 'eligiblevoters_set'
});
</script>
{% endblock %}
Any ideas on how to make it work and only allow he eligible voters to vote for the polls they are invited to?
I was thinking that maybe my EligibleVoters model is wrong somehow and I need a ManyToMany field somewhere??

How to Query DB using .object in Django

I have few categories. Say Electronics and Toy. and i have mutiple shops in a mall. A shop is saved with a foreign key(category). Now in the navigation bar.. i want to list stores based on their categories. Thanks in anticipation
models.py
class ShopCategories(models.Model):
category = models.CharField(max_length=50, unique=True,)
def __str__(self):
return self.category
class NewShop(models.Model):
category = models.ForeignKey(ShopCategories)
name = models.CharField(max_length=100, unique=True)
tagline = models.CharField(max_length=50, default='Enter tagline here2')
description = models.TextField(default='enter shop description')
def __str__(self):
return self.name
views.py
def basefile(request):
shop_cat = NewShop.objects.filter(category_id=1)
shop_name = NewShop.objects.filter(name=shop_cat)
return render_to_response('base.html', {'Shopname':shop_name, 'Shopcat':shop_cat})
base.html
{% for category_id in Shopcat %}
<li>{{ Shopname }}</l>
{% endfor %}
To get all store use below query.
shopcat = NewShop.objects.filter(category__category="category name")
base.html
{% for shop in shopcat %}
<li>{{ shop.name }}</l>
{% endfor %}
Try do this:
urls.py
urlpatterns = [
...
url(r'^get_shops_by_category/(?P<id_category>\d+)/$', views.get_shops_by_category, name = "get_shops_by_category"),
]
views.py
def basefile(request):
categories = ShopCategories.objects.all()
shop_name = NewShop.objects.filter(name=shop_cat)
return render_to_response('base.html', {'Shopname':shop_name, 'categories': categories})
def get_shops_by_category(request, **kwargs):
categories = ShopCategories.objects.all()
current_category = ShopCategories.objects.get(id = kwargs['id_category']
shops = NewShop.objects.filter(category = current_category)
return render_to_response('base.html', {'shops': shops, 'categories': categories, 'current_category' current_category})
base.html
...
<select>
{% for category in categories %}
{% if current_category %}
<option value="{{ category.id }}">{{ category.category }}</option>
{% else %}
<option value="{{ category.id }}" onclick="location.href = '{% url 'your_app:your_url' category.id %}'">{{ category.category }}</option>
{% endfor %}
</select>
{% if shops %}
<table>
<thead>
<tr>
<th>Shop name</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
{% for shop in shops %}
<tr>
<td>{{ shop.name }}</td>
<td><!-- Buttons or links, ect ... --></td>
</tr>
{% endfor %}
</tbody>
</table>
{% endif %}
...
Thanks Guys. I know this isn't the best method but i was able to fix it this way
models.py
class ShopCategories(models.Model):
category = models.CharField(max_length=50, unique=True)
def __str__(self):
return self.category
class NewShop(models.Model):
category = models.ForeignKey(ShopCategories)
name = models.CharField(max_length=100, unique=True)
tagline = models.CharField(max_length=50, default='Enter tagline here2')
description = models.TextField(default='enter shop description')
def __str__(self):
return self.name
views.py
def basefile(request):
cat1 = NewShop.objects.filter(category_id=1)
cat2 = NewShop.objects.filter(category_id=2)
cat3 = NewShop.objects.filter(category_id=3)
cat4 = NewShop.objects.filter(category_id=4)
shop_name1 = ShopCategories.objects.filter(id=1)
shop_name2 = ShopCategories.objects.filter(id=2)
shop_name3 = ShopCategories.objects.filter(id=3)
shop_name4 = ShopCategories.objects.filter(id=4)
return render_to_response('base.html', {'Shop_cat1':cat1, 'Shop_cat2':cat2, 'Shop_cat3':cat3,
'Shop_cat4':cat4,'shop_name1':shop_name1, 'shop_name2':shop_name2,
'shop_name3':shop_name3, 'shop_name4':shop_name4})
base.html
{% for shop_name1 in shop_name1 %}
<li>
<h3> {{ shop_name1 }}</h3>
</li>
{% endfor %}
{% for Shop_cat1 in Shop_cat1 %}
<li>{{ Shop_cat1 }}</li>
{% endfor %}

How to upload a file from webpage and show the name in table in Django

I have been doing the research for a long time and cannot figure out. I have my Django app linked to mysql db which was created by my model "CostDetl", and I have a webpage to display my model table. In the table, I have a filefield "Agreement", where I would like the webpage to show browse and upload form in the cell for each table row, and if anything is uploaded and the filefield is not empty, the table cell would just show the file name with a link to open the uploaded file. I have no problem displaying the uploaded file with the link and I can upload the agreement in Admin, but I cannot figure out how to upload from the webpage. Please help! The following are all my code, much appreciated!
Settings:
MEDIA_ROOT = '/Users/username/myapp/media'
MEDIA_URL = '/media/'
In project urls.py, I added:
url(r'^media/', views.UploadAgreementView),
In models.py:
def content_file_name(instance, filename):
return os.path.join(['content', instance.user.username, filename])
class CostDetl(models.Model):
Provider = models.CharField(null=True, blank=True, max_length=200)
Description = models.CharField(null=True, blank=True, max_length=200)
Agreement = models.FileField(null=True, blank=True, upload_to=content_file_name)
def __unicode__(self):
return self.Provider+' | '+self.Description
def __str__(self):
return self.Provider+' | '+self.Description
Views:
def CostData(request):
costrecordset = CostDetl.objects.all()
context = {'CostDetl1': costrecordset}
return render(request, 'polls/CostDetl.html', context)
def UploadAgreementView(request):
if request.method == 'POST':
form = UploadAgreement(request.POST or None, request.FILES or None)
if form.is_valid():
newdoc = CostDetl(request.FILES['file'])
newdoc.save()
return HttpResponseRedirect(reverse('polls:AgreementUpload'))
else:
form = UploadAgreement()
documents = CostDetl.objects.all()
return render(request,
'polls/CostDetl.html',
{'CostDetl1': documents, 'AgreementUpload': form})
In forms.py:
from django import forms
from .models import CostDetl
class UploadAgreement(forms.Form):
title = forms.CharField(max_length=50)
file = forms.FileField()
In template:
{% if CostDetl1 %}
{% load humanize %}
<table>
<tr>
<th>Provider</th>
<th>Expense Description</th>
<th>Agreement</th>
</tr>
{% for i in CostDetl1 %}
<tr>
<td nowrap>{{ i.Provider }}</td>
<td nowrap>{{ i.Description }}</td>
<td nowrap>
{% if i.Agreement %}
<a href="/media/{{ i.Agreement }}">
{{ i.Agreement }}
</a>
{% else %}
<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<input type="file" name="myfile"/>
<input type="submit" name="submit" value="Upload"/>
</form>
{% endif %}
</td>
</tr>
{% endfor %}
</table>
{% endif %}
In urls.py:
url(r'^CostDetl/$', views.CostData, name='CostDetl1'),
url(r'^Agreement/$', views.UploadAgreementView, name='AgreementUpload'),

Django model cross reference in templatre

Ok So my mind is going to mush...
I have 2 models. One is a card location and the other holds card types. I've got a view and template which display's the cards in a specific chassis. What I can't seem to get to work is the foreign key reference. I want to display the CardType.sName in the template.
I'm certain i've just done something stupid ...
Models.py:
class CardLocation(models.Model):
chassis = models.ForeignKey(Chassis)
slot = models.CharField(max_length=20)
slot_sub = models.CharField(max_length=20)
CardType = models.ForeignKey(CardType)
PartNum = models.CharField(max_length=200)
ProdID = models.CharField(max_length=200)
versID = models.CharField(max_length=200)
serialNum = models.CharField(max_length=200)
cleiCode = models.CharField(max_length=200)
lastSeen = models.DateTimeField()
isActive = models.BooleanField(default=0)
def __unicode__(self):
return self.slot
class CardType(models.Model):
sName = models.CharField(max_length=5)
lName = models.CharField(max_length=200)
description = models.CharField(max_length=200)
def __unicode__(self):
return self.sName
views.py
class DetailView(generic.ListView):
model = CardLocation
template_name = 'chassis/detail.html'
context_object_name = 'cardLoc'
def get_queryset(self):
#chassis_id = get_object_or_404(CardLocation, chassis_id__iexact=self.args[0])
chassis_id = self.args[0]
return CardLocation.objects.filter(chassis_id=chassis_id)
def get_context_data(self, **kwargs):
# Call the base implementation first to get a context
context = super(DetailView, self).get_context_data(**kwargs)
# Add in the
context['chassisQ'] = Chassis.objects.get(id=self.args[0])
#context['CardType'] = CardType.objects.order_by()
return context
detail.html
{% load staticfiles %}
<h2>
<table>
<tr><td>Name:</td><td>{{ chassisQ.name }}<td></tr>
<tr><td>Owner:</td><td>{{ chassisQ.owner }}<td></tr>
<tr><td>ip Adress:</td><td>{{ chassisQ.ipAddr }}<td></tr>
<tr><td>Last updated:</td><td>{{ chassisQ.lastSeen }}<td></tr>
</table>
</h2>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
{% if cardLoc %}
<table border=1>
<tr><td>slot</td><td>Type</td><td>Part Number</td><td>Product ID/</td><td>Version ID</td><td>Serial Num</td><td>CLEI code</td></tr>
{% for card in cardLoc %}
<tr>
<td align="right">{{ card.slot }}</td>
<td>Type {{ card.cardtype__set.all.sName }} </td> <!-- DISPLAY sName HERE -->
<td>{{ card.PartNum }}</td>
<td align="right">{{ card.ProdID }}/</td>
<td align="left">{{ card.versID }}</td>
<td>{{ card.serialNum }}</td>
<td>{{ card.cleiCode }}</td>
</tr>
{% endfor %}
</table>
{% else %}
<p>No cards are available...</p>
{% endif %}
A Card has numerous CardTypes (as it's a ForeignKey relationship), not just one. You have:
<td>Type {{ card.cardtype__set.all.sName }} </td>
You need to loop through all the CardTypes related to the Card:
{% for card in cardLoc %}
...
{% for cardtype in card.cardtype__set.all %}
<td>Type {{ cardtype.sName }}</td>
{% endfor %}
...
{% endfor %}