I created a django model for applicants. i made it in such a way that the admin can delete an applicant's name from the model. But whenever an applicant's name is deleted the IDs remain the same, for exmaple if i delete an applicant with ID number 4 instead of the next applicant's number to become the new 4 it remains 5.
here is my code view code:
`def delete(request, id):
applicant = Applicants.objects.get(id=id)
applicant.delete()
return HttpResponseRedirect(reverse('applicants_list'))
html code:
<table border="1" >
{% for x in myapplicants %}
<tr>
<td>{{ x.id }}</td>
<td>{{ x.fname }}</td>
<td>{{ x.lname }}</td>
<td>{{ x.p_course }}</td>
<td>{{ x.total_grade }}</td>
<td><button><a href="delete/{{ x.id }}" >Reject Application</a></button></td>
</tr>
{% endfor %}
</table>`
Related
If a value is None I would like to show a - rather than rendering None in the table.
However I get the following error:
Could not parse the remainder: ' or '-'' from 'employee.full_name or '-''
I'd like to avoid doing a ton of if else statements if possible.
Here's my code:
{% for employee in employees %}
<tr>
<td>{{employee.full_name or '-'}}</td>
<td>{{employee.position or '-'}}}</td>
<td>{{employee.dob or '-'}}}</td>
<td>{{employee.phone or '-'}}}</td>
<td>{{employee.email or '-'}}}</td>
<td>{{employee.address or '-'}}}</td>
<td>{{employee.joined or '-'}}}</td>
</tr>
{% endfor %}
The following Python code works as expected:
dog = None
print(dog or '-')
You can work with the |default_if_none template filter [Django-doc]:
{% for employee in employees %}
<tr>
<td>{{ employee.full_name|default_if_none:'-' }}</td>
<td>{{ employee.position|default_if_none:'-' }}</td>
<td>{{ employee.dob|default_if_none:'-' }}</td>
<td>{{ employee.phone|default_if_none:'-' }}</td>
<td>{{ employee.email|default_if_none:'-' }}</td>
<td>{{ employee.address|default_if_none:'-' }}</td>
<td>{{ employee.joined|default_if_none:'-' }}</td>
</tr>
{% endfor %}
I'm just discovering Django and i'm still a total noob.
I got a view that return multiple query set.
class RouteDateView(ListView):
model = Tblsummary
template_name = 'reviewrouteassess/selectdaterange.html'
def get_context_data(self, *args, **kwargs):
context = super(RouteDateView, self).get_context_data(*args, **kwargs)
context['allroute'] = Tblsummary.objects.filter(off_no=self.request.GET.get('depotcode')[:4])
for p in context['allroute']:
context[p.res_route] = Tblsummary.objects.filter(res_route=p.res_route)
return context
Then in my template I would like to access those dynamically name context. That's where i'm stuck.
<table>
{% for a in allroute %}
<tr>
<td>{{ a.res_route }}</td>
<td>{{ a.hcalls }}</td>
</tr>
{% for d in a.res_route %}
<tr>
<td>{{ d.res_route }}</td>
<td>{{ d.hcalls }}</td>
</tr>
{% endfor %}
{% endfor %}
How can I evaluate a.res_route so that a.res_route return the context passed by the view?? Thanks you so much!!
{% for d in a.res_route %}
I would suggest adding a method to your model to access the second query:
class Tblsummary(models.Model):
... # or whatever is there currently
def sub_routes(self): # name this how you'd like
return Tblsummary.objects.filter(res_route=self.res_route)
And then in your template:
<table>
{% for a in allroute %}
<tr>
<td>{{ a.res_route }}</td>
<td>{{ a.hcalls }}</td>
</tr>
{% for d in a.sub_routes %}
<tr>
<td>{{ d.res_route }}</td>
<td>{{ d.hcalls }}</td>
</tr>
{% endfor %}
{% endfor %}
This isn't going to be ideal from an efficiency standpoint since the sub_routes query is called once per entry in allroute but right now allroute is limited to 4 results so that shouldn't be an issue in practice.
I have a project where when a user enters a vehicle no, the database is filtered and a table containing that vehicle no and the information corresponding to is displayed. I further want to filter this displayed table, eg: if the user chooses to see quantity greater than 18kl, then the matching vehicle number with quantity greater than 18 is displayed. Also I want to hide the columns selected by the users as there are many columns. Can someone tell me how to do this in django, or suggest some better ways. (I am providing only the related code snippet.)
forms.py
class VehicleSearch(forms.Form):
vehicl[![enter image description here][1]][1]e_no = forms.CharField(widget=forms.TextInput(attrs={'class': 'special'}), required=False)
#filter form
class Filter(forms.Form):
capacity_grp = forms.ChoiceField(label='Show only', widget=forms.RadioSelect,
choices=[('abv', '>18 kl'), ('blw', '<18 kl')], required=False)
views.py
def search(request):
form_1 = forms.VehicleSearch()
if request.method == 'POST' and 'btnform1' in request.POST:
form_1 = forms.VehicleSearch(request.POST)
if form_1.is_valid():
vehicle_no = form_1.cleaned_data['vehicle_no']
transport = models.Transport.objects.filter(vehicle=vehicle_no)
my_dict.update({'transport': transport})
return render(request, 'search.html', my_dict)
search.html
/Vehicle form/
<form id="f1" method="POST">
{% csrf_token %}
{{form_1.as_p}}
<p style="padding: 10px;"><button class="myButton" name="btnform1">Search</button></p>
</form>
/*Table display*/
<div class="submain">
{% if transport %}
<table id="transportation">
<thead>
<th>Vehicle</th>
<th>Carrier</th>
<th>Location No</th>
<th>MCMU</th>
<th>Location</th>
<th>Customer Code</th>
<th>Zone</th>
<th>Quantity</th>
<th>RTKM</th>
<th>KL* KM</th>
<th>Amount</th>
<th>Load</th>
<th>Capacity</th>
<th>Rate</th>
<th>Cost</th>
</thead>
{% for i in transport %}
<tr class="item">
<td>{{ i.vehicle }}</td>
<td>{{ i.carrier }}</td>
<td>{{ i.location_no }}</td>
<td>{{ i.mcmu }}</td>
<td>{{ i.location }}</td>
<td>{{ i.customer_code }}</td>
<td>{{ i.zone }}</td>
<td>{{ i.quantity }}</td>
<td>{{ i.rtkm }}</td>
<td>{{ i.klkm }}</td>
<td>{{ i.amount }}</td>
<td>{{ i.load }}</td>
<td>{{ i.capacity }}</td>
<td>{{ i.rate }}</td>
<td>{{ i.cost }}</td>
</tr>
{% endfor %}
</table>
</div>
In the table display you can add a loop with the name's field, something like that:
View:
def search(request):
form_1 = forms.VehicleSearch()
if request.method == 'POST' and 'btnform1' in request.POST:
form_1 = forms.VehicleSearch(request.POST)
columns = request.POST.getlist('filter_hide_columns')
if form_1.is_valid():
vehicle_no = form_1.cleaned_data['vehicle_no']
transport = models.Transport.objects.filter(vehicle=vehicle_no)
my_dict.update({'transport': transport}, {'columns': columns})
return render(request, 'search.html', my_dict)
TemplateTag
def lookup(model, attr):
if hasattr(model, attr):
return getattr(model, attr)
else:
return None
refer https://docs.djangoproject.com/en/2.2/howto/custom-template-tags/
Template:
{% if transport %}
<table id="transportation">
<thead>
<tr>
{% for field in columns %}
<th>{{ field.name }}</th>
{% endfor %}
</tr>
</thead>
<tbody>
{% for t in transport %}
<tr>
{% for field in columns %}
<td>{{ t|lookup:field.name }}</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
{% endif %}
Please refer https://docs.djangoproject.com/en/2.2/topics/forms/#looping-over-the-form-s-fields
As i am using Python for backend and Django for frontend.
Currently i am getting output in background as below from function:
d={'Testcase1': {'hydra.c': 10,'clone.c':5},
'Testcase2':{'hydra.c':337,'vendor.c':100 },
'Testcase3':{'hydra.c':100,'vendor.c':80}
'Testcase4':{'vendor.c':89,'template.c':98,'temp.c':92},
'Testcase5':{'vendor.c':83}
'Testcase6':{'template.c':34}....}
for key,values in d.iteritems():
so=sorted(values.iteritems(),key=operator.itemgetter(1))
print(key,so[-1][0],so[-1][1])
for backend i'm getting correct output but how to implement this function in Django frontend
{% for key,value in d.items() %}
{% for k,v in sorted(value.iteritems(), key=lambda (k,v): (v,k)):
<table>
<tr>
<td>{{ key }}</td>
<td>{{ k[-1] }}</td>
<td>{{ v[-1] }}</td>
</tr>
</table>
Why don't you build a dictionary on backend and then render the template with created dict.
d={'Testcase1': {'hydra.c': 10,'clone.c':5},
'Testcase2':{'hydra.c':337,'vendor.c':100 },
'Testcase3':{'hydra.c':100,'vendor.c':80}
'Testcase4':{'vendor.c':89,'template.c':98,'temp.c':92},
'Testcase5':{'vendor.c':83}
'Testcase6':{'template.c':34}....}
out_dict = {}
for key,values in d.iteritems():
so=sorted(values.iteritems(),key=operator.itemgetter(1))
out_dict[key] = [so[-1][0],so[-1][1]]
in UI,
{% for key, value in out_dict.items %}
<table>
<tr>
<td>{{ key }}</td>
<td>{{ value.0 }}</td>
<td>{{ value.1 }}</td>
</tr>
</table>
{% endfor %}
I have two related models:
class Package(models.Model):
package_name = models.CharField(max_length=64)
ptype = models.CharField(max_length=16)
class Extra(models.Model):
package = models.ForeignKey(Package, related_name='package')
data = models.DecimalField(max_digits=8, decimal_places=2, blank=True, null=True)
information = models.CharField(max_length=1024, blank=True)
view.py:
def show_package(request):
list = get_list_or_404(Package, ptype='sometype')
return render(request, 'table.html', {'list': list})
and template:
{% for row in list %}
<table class="provider_list">
<tr>
<td>{{ row.package_name}}</td>
<td>{{ row.ptype }}</td>
</tr>
</table>
{% endfor %}
How can I add an additional table (from Extra model) next to the prelated table?
Like:
<table>
{% for extra_row in extra_list %}
<tr>
<td>{{ extra_row.data }}</td>
<td>{{ extra_row.information }}</td>
</tr>
{% endfor %}
</table>
Thanks.
try this:
{% for package in list %}
<table class="provider_list">
<tr>
<td>{{ package.package_name}}</td>
<td>{{ package.ptype }}</td>
<td>
<!-- fetch the related data -->
<table>
{% for extra in package.extra_set.all %}
<tr>
<td>{{ extra.data }}</td>
<td>{{ extra.information }}</td>
</tr>
{% endfor %}
</table>
</td>
</tr>
</table>
{% endfor %}
You show modify your Extra related_name on package ForeignKey.
models.py
class Extra(models.Model):
extra = models.ForeignKey(Package,related_name='extra_related_name') #default for related_name would be 'extra_set'
You can access all extra fields via:
extras = list.extra_related_name.all()
Let's imagine you have only one extra existing on every Package model
views.py
def show_package(request):
list = get_list_or_404(Package, ptype='sometype')
list.extra = list.extra_related_name.all()[0]
return render(request, 'table.html', {'list': list})
template
{% for row in list %}
<table class="provider_list">
<tr>
<td>{{ row.package_name}}</td>
<td>{{ row.ptype }}</td>
<td>{{ row.extra.data }}</td>
<td>{{ row.extra.information }}</td>
</tr>
</table>
{% endfor %}
If you are sure that there is at most one extra per package you should look at OneToOneField for easier access. If you are unsure, stick to ForeignKey and add checks in the view to check that you are accessing valid data.