Dear group,
I am Django learner.
I have two models.
1. ModelRegister
2. ModelGSP
ModelRegister returns model_name.
ModelGSP has a foreignkey to ModelRegister.
When we select a particular model from a ModelGSP model,i want to fill a
field in ModelGSP with the data for a selected model when ajax request is
made.
Input data and expected result shown in screen shot below.
*currently when i select any model from RegisteredModel, none of the data
is populated in get_model_nos_for_modelname field.*
*Please correct me if i am doing any mistake and how to proceed further.*
[image: query.png]
Below is my code snippet :
Enter code here...
Models.py:
=======
class ModelRegister(models.Model):
"""
This class is used to register the model.
"""
FLOAT_CHOICES = [[float(x), float(x)] for x in range(1, 21)]
model_name = models.CharField(max_length=128, verbose_name="ModelName")
model_no = models.CharField(max_length=128, verbose_name="ModelNo")
os_name = models.ForeignKey(OSName, on_delete=models.CASCADE,
verbose_name="OSName",default=" ")
chipset_type = models.ForeignKey(ChipsetType,on_delete=models.CASCADE,
verbose_name="chipsetType")
class Meta:
verbose_name_plural = "ModelRegisteredList"
def __str__(self):
return self.model_name
class ModelGSP(models.Model):
"""
This class is used to raise Model GSP request.
"""
registered_model =
models.ForeignKey(ModelRegister,on_delete=models.CASCADE,
verbose_name="ModelName")
model_nos_for_reg_model = models.ManyToManyField(ModelNumber)
model_gsp_requester = models.CharField("Model GSP Requester",
max_length=128,default=" ")
integrator = models.CharField("Integrator", max_length=100,default=" ")
class Meta:
verbose_name_plural = "ModelGSPRequests"
def __str__(self):
return self.model_gsp_requester + self.integrator + str(self.pk)
class ModelRegisterForm(ModelForm):
"""
This class is used to register the model information.
"""
class Meta:
model = ModelRegister
exclude = ['model_leader']
#fields = '__all__'
@property
def helper(self):
helper = FormHelper()
helper.form_tag = 'model_register_form'
helper.layout = Layout(
Fieldset(
'Registered Model Details',
#Row('model_leader' ),
Row('model_name','model_no'),
Row('os_name', 'os_version'),
Row('chipset_type','chipset_name')
)
)
return helper
class ModelGSPRequestForm(ModelForm):
"""
This class is used to define the form fields to raise the model GSP
request.
"""
registered_model = forms.ChoiceField(required=False,choices=unique_values)
#model_nos_for_reg_model =
forms.ModelMultipleChoiceField(required=False,queryset=)
class Meta:
model = ModelGSPRequest
exclude = ['model_gsp_requester']
#choices=[]
def __init__(self, *args, **kwargs):
super(ModelGSPRequestForm, self).__init__(*args, **kwargs)
#self.form_tag = False
self.helper = FormHelper()
self.helper.layout = Layout(
Fieldset("Add Model GSP Request",
Row('registered_model','model_nos_for_reg_model')
)
)
self.fields['model_nos_for_reg_model'].queryset =
ModelNumber.objects.none()
ajax.py:
========
def load_model_details(request):
print("load model details")
print("request method",request.method)
model_name_id = request.GET.get("model_name")
model_registered_instances =
ModelRegister.objects.filter(model_name_id=model_name_id)
model_number = []
for model in model_registered_instances:
model_number = model_number.append(model.model_no)
print("Model Number:", model_number)
return render(request, 'model_info_options.html',
{'model_registered_instances':model_registered_instances})
model_info_options.html:
========================
<!DOCTYPE html>
<html lang="en">
<option value="">---------</option>
{% for model in model_registered_instances %}
<option value="{{ model.pk }}">{{ model.model_no }}</option>
{% endfor %}
</html>
ModelGSP.html:
=============
<!DOCTYPE html>
{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% block static %}
{% endblock static %}
{% block content %}
<form class="form" form='model_gsp_form' id="gspmodelinfoForm" method="post"
model-details-url="{ %url 'ajax_load_model_details' %}" role="form">
{% csrf_token %}
<div class="container">
{% crispy form %}
<br>
<br>
<button type="submit" class="btn btn-primary">
{% if action == "add" %}
<span class="fas fa-plus"></span>Add
{% else %}
<span class="fas fa-edit"></span>Update
{% endif %}
</button>
<button type="reset" class="btn btn-primary" aria-label="Close"
data-dismiss="modal">
<span aria-hidden="true">×</span>Cancel
</button>
</div>
</form>
{% endblock content %}
{% block scripts %}
<script type="text/javascript">
$(document).ready(function(){
$("#id_registered_model").change(function () {
var url = $("#gspmodelinfoForm").attr("model-details-url"); # Get
the url of the 'gspmodelinfoForm' view
var model_name_id = $(this).val(); //get the selected model name id
from the HTML input
$.ajax({ //Initialize an ajax request
url: url, //Set the URL of the request
data: {
'model_name' : model_name_id // add the
model name to the GET parameters
},
success: function(data) { // 'data' is return of
'load_model_details' view function
$(#"id_registered_model_no").html(data) //
place the contents of the model no with the data came from server
}
});
});
});
</script>
{% endblock scripts %}
def create_model_gsp_request_form(request,id=None):
print("create_model_gsp_request_form:", id)
if id:
action = 'edit'
model = get_object_or_404(ModelGSPRequest, pk=id)
else:
action = 'submit'
model = ModelGSPRequest()
message = ""
if request.method == 'POST':
print("when the request is POST ,In ModelGSPRequestForm")
form = ModelGSPRequestForm(request.POST, instance=model)
if form.is_valid():
new_model_gsp_request = form.save(commit=False)
new_model_gsp_request.model_gsp_requester = request.user.username
new_model_gsp_request.save()
form.save_m2m()
return HttpResponseRedirect('/gspapp/ModelGSPRequestList')
else:
print("when the request is GET ,In ModelGSPRequestForm")
form = ModelGSPRequestForm(instance=model)
# apply_gsp_model_data =
serializerModelGSPRequestLists.serialize("json", ApplyGSP.objects.all())
# print("apply_gsp_model_Data:",apply_gsp_model_data)
context = {'form': form, 'Message': message, 'action': action}
context = {'form': form, 'Message': message, 'action': action}
return render(request, 'ModelGSP.html', context)
urls.py:
-------
urlpatterns = [
path('ModelGSPRequestList/',
login_required(views.ModelGSPRequestList.as_view(),
login_url='/gspapp/login/'), name='ModelGSPRequestList'),
path('ModelGSPRequestList/requestForm/', views.create_model_gsp_request_form,
name='ModelGSPRequestForm'),
re_path(r'^editModelGSPRequest/(?P<id>\d+)/$',
views.create_model_gsp_request_form, name='editModelGSPRequest'),
#path('',include(router.urls)),
path('ajax/load_model_details/',
ajax.load_model_details,name='ajax_load_model_details')]
Regards,
N.Dilip kumar.
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