I need to get database objects on the HTML only when the the SUBMIT is clicked and not on page load. I currently have an AJAX script running on the same form where it returns the text entered in textbox onto the HTML when submit is clicked. I want this feature to stay as well as add a new feature of retrieval of data. Below are some of the code snippets I am using:
views.py
#csrf_exempt
def chat(request):
resps = Responses.objects.all()
context = {'resps' : resps}
return render(request, "chat.html", context)
urls.py
path('chat/', views.chat, name='chat'),
chat.html
<form id="testForm" name="test-form" class="test-form" action="" method="POST">{% csrf_token %}
<input id="texting" name="texting" type="text" class="test-text" placeholder="Test here"/>
<div class="footer">
<input type="submit" value="SEND">
</form>
</div>
{% for r in resps %}
<div>
<p>{{r.response}}</p>
</div>
{% endfor %}
................................................
<script type="text/javascript">
$(document).on('submit','#testForm', function(e){
e.preventDefault();
$.ajax({
type : 'POST',
url : '/chat/',
data :{
text : $('#texting').val(),
csrfmiddlewaretoken: $('input[text=csrfmiddlewaretoken]').val()
},
success : function(){
// alert("Done!");
document.getElementById("userSpeaks").innerHTML = document.getElementById('texting').value;
}
});
});
</script>
Any help would be appreciated. I just need a way out to print the model objects on each click of the submit button and not automatically on page load. Thanks in advance.
Please change the line
csrfmiddlewaretoken: $('input[text=csrfmiddlewaretoken]').val()
to
csrfmiddlewaretoken: $('input[name=csrfmiddlewaretoken]').val()
So you will have to send your querylist as a json object if you want it to be sent through ajax
from django.http import JsonResponse
from django.core.serializers import serialize
#csrf_exempt
def chat(request):
data = {
'resps': serialize("json", Responses.objects.all())
}
return JsonResponse(data)
and you success will look something like this
success : function(data){
// alert("Done!");
resps = JSON.parse(data.resps);
var htmldata=""
for(var x in resps){
htmldata+="<p>"+resps[x].fields.xyz+"</p>"
}
$("#userSpeaks").html(htmldata);
}
Related
I would like to populate a django form field each time a dropdown value is selected inside a specific field.
Example :
I have a list of businesses (business A, business B, ...) and a list of countries. Each business is located in a specific country.
Business A --> France
Business B --> Germany
Business C --> England
In my form, when I select a specific business in my dropdown list, I would like to populate immediatly the country field with the associated country. If the business change, the associated country too.
I'm using Django 1.11.18
The context :
In my code, MemberState corresponds to the Country as my example above and RBI corresponds to the business.
My Model :
class MemberState(models.Model):
name = models.CharField(max_length=256, verbose_name=_('Name'))
code = models.CharField(max_length=256, verbose_name=_('Code'))
class RBI(models.Model):
short_name = models.CharField(max_length=256, verbose_name=_('Short name'), unique=True)
member_state = models.ForeignKey(MemberState, verbose_name=_('Member State'))
...
My Form :
class FinalProductSearchForm(forms.Form):
releasing_body = ShortNameModelChoiceField(queryset=RBI.objects.filter(active=True).order_by('short_name'), required=False,
widget=forms.Select(), empty_label=_('Select'), label=_('Releasing Body/Institution'))
member_state = forms.ModelChoiceField(queryset=MemberState.objects.filter(active=True).order_by('name'), required=False,
widget=forms.Select(), empty_label=_('Select'), label=_('Member state'))
...
I would like to select a releasing_body in my form and prefill the member_state field associated. Each time I change the realeasing_body it loads the associated member_state.
I tried some things in Django but I need AJAX request. Unfortunatly, I have never done this kind of things.
My work with AJAX part :
So, this is my first try (which doesn't work) :
I created this function in my views.py file :
def ajax_member_state_request(request):
if request.is_ajax():
release_body = request.GET.get('releasing_body', None)
print(release_body)
member_state_ini = ReleaseBodyInstitution.objects.values_list('member_state', flat=True).get(id=release_body)
print(member_state_ini)
member_state = MemberState.objects.get(id=member_state_ini)
print(member_state)
return JsonResponse({'member_state': member_state})
In my urls.py file, I added :
url(r'^finalproduct/list/$', FinalProductListView.as_view(),
name='finalproduct-list'),
url(r'^finalproduct/list/ajax_member_state_request/$', views.ajax_member_state_request, name='ajax_member_state_request'),
And finally in my HTML file :
<form id="providerForm" data-provider-url="{% url 'ajax_member_state_request' %}" class="navbar-search" method="GET" action="{{ url }}">
{% csrf_token %}
<div class="row">
<div class="col-md-5">
{{ search_form.releasing_body|as_crispy_field }}
</div>
<div class="col-md-5">
{{ search_form.member_state|as_crispy_field }}
</div>
</div>
<input type="submit" class="btn btn-default" value="{% trans 'Search' %}" />
<input type="button" class="btn btn-default" name="clear" value="Reset" onclick="clearForm(this.form);">
</form>
The AJAX part looks like this :
$("#id_releasing_body").change(function () {
var url = $("#providerForm").attr("data-provider-url");
var releasingBodyId = $(this).val();
$.ajax({
url: url,
type: 'GET',
dataType: 'json',
data: {
'releasing_body': releasingBodyId
},
success: function (data) {
$("#id_member_state").val(data.member_state);
}
});
});
I would implement a view that given a business name returns a JsonResponse with the country (following your example).
With that in place in the success section of the ajax request set the value of the country form field.
The view:
def contry_for_bussines(request):
if request.is_ajax():
member_state = ReleaseBodyInstitution.objects.get(id=release_body).member_state
return JsonResponse({'member_state': member_state})
In the ajax
$("#id_releasing_body").change(function () {
var url = $("#providerForm").attr("data-provider-url");
var releasingBodyId = $(this).val();
$.get(url, {'releasing_body': releasingBodyId}, function(data){
$("#id_member_state").text(data.member_state);
});
});
Check this approach if it helps, I followed those steps for my project and successfully populated choicefields with AJAX request. The only problem is the form is not binding when submitted despite a value is selected in all fields (working on that now)
https://simpleisbetterthancomplex.com/tutorial/2018/01/29/how-to-implement-dependent-or-chained-dropdown-list-with-django.html
i'm quite new using django and i've been stuck in this problem for several days.
I have a form.Form in a bootstrap modal on my template with only 1 field (email_field) and basically i need to submit that form via ajax, check if that email address is registered in the database, then send an invitation to that email and close the modal. if the email is not registered show the form errors without closing the modal. I've tried with different examples but can find the solution either because the examples don't handle errors or the form is not inside a modal or not using class based views
.
I'm having 2 issues with my code:
Not sure what to return in my view if the form is valid or invalid and how to handle errors in my js code to show them on the modal.(return tha form to render the errors or a JSON response??).
After the first success submission is made the form cannot be used again.(The size of the submit button changes and if you click it return a error : CSRF token missing or incorrect)
Form.py
class CollaboratorForm(forms.Form):
email_address = forms.EmailField(required=True,widget=forms.TextInput(attrs={'class': 'form-control focus-text-box', 'type': 'email',
'placeholder': 'Enter email'}))
def clean_email_address(self):
email = self.cleaned_data['email_address']
if not User.objects.filter(email=email):
raise forms.ValidationError('This user is not registered')
return email
def sendEmail(self, datas):
message = "Hello, " + datas['user_name']+" "+ datas['email_from'] + " invited you to collaborate in an existing project. Follow this link if you are interested " + datas['invitation_link']
msg = EmailMessage('Invitation from ' + datas['user_name'],
message, to=[datas['email_to']])
msg.send()
Template.html (project_detail.html)
<script src="{% static '/experiments/js/invite_collaborator.js' %}"></script>
<div class="bootstrap-modal modal fade in" id="collaboratorModal" style="display: none;">
<div class="modal-body">
<form action="{% url 'experiments:invite-collaborator' project_id=project.id %}" method="post" id=collaborator-form >
{% csrf_token %}
<div class="form-group">
{% if collaborator_form.errors %}
<ol>
{% for error in collaborator_form.errors %}
<li><strong>{{ error|escape }}</strong></li>
{% endfor %}
</ol>
{% endif %}
<label class="control-label">Invite someone by email</label>
<div class="input-group mt10">
{{ collaborator_form }}
<span class="input-group-btn">
<input name="collaborator-commit" onClick="invite({{project.id}});" class="btn btn-primary" data-disable-with="Send Invitation" id="invite-button" type="submit">
</span>
</div>
</div>
</form>
</div>
</div>
Url.py
urlpatterns = [
url(r'^(?P<project_id>[0-9]+)/invite_collaborator$', views.InviteCollaborator.as_view(), name='invite-collaborator'),
]
View.py
class ProjectDetail(DetailView):
model = Project
template_name = 'experiments/project_detail.html'
pk_url_kwarg = 'project_id'
def get_context_data(self, **kwargs):
context = super(ProjectDetail, self).get_context_data()
project = get_object_or_404(Project,pk=self.kwargs["project_id"])
context["project"] = project
context["collaborator_form"] = CollaboratorForm()
return context
class InviteCollaborator(FormView):
form_class = CollaboratorForm
template_name = 'experiments/project_detail.html'
def post(self, request, *args, **kwargs):
collaborator_form = CollaboratorForm(data=request.POST)
project_id = request.POST['project_id']
current_project = Project.objects.get(id=project_id)
datas={}
if collaborator_form.is_valid():
cleaned_data = collaborator_form.cleaned_data
email_address = cleaned_data.get('email_address')
user = User.objects.get(pk=request.user.id)
invitation_link = "http://exp.innovationhackinglab.com/projects/"+ str(current_project.id) + "/join/" + current_project.invitation_key
datas['user_name'] = user.first_name + ' ' + user.last_name
datas['email_from'] = user.email
datas['email_to'] = email_address
datas['invitation_link'] = invitation_link
collaborator_form.sendEmail(datas)
data = simplejson.dumps("Success")
return HttpResponse(data, content_type='application/json')
else:
return super(InviteCollaborator, self).form_invalid(collaborator_form)
invite_collaborator.js
function invite(project_id) {
$('#collaborator-form').submit(function(e) {
e.preventDefault();
$.ajax({
data: $(this).serialize()+'&'+$.param({ 'project_id': project_id }),
type: $(this).attr('method'),
url: $(this).attr('action'),
});
$('#collaboratorModal').modal('toggle');
$('#collaboratorModal').on('hidden.bs.modal', function () {
$(this).find("input,textarea,select").val('').end();
});
});
};
I've read about using success: & error: on the js file but don't know how to use it without the appropriate "return" in the view
You need to have two ajax methods, one to get the form (as raw html) and one to post the form. You will have a corresponding get and post method in your view too.
get function of your view class:
def get(self, request, *args, **kwargs):
form = CollaboratorForm()
return render(request,'template.html',{'form':form})
def post(self, request, *args, **kwargs):
form = CollaboratorForm(request.POST)
if form.is_valid():
//save form
//return whatever you want to show on successful form submission
else:
//return bound form as html with errors
return render(request,'template.html',{'form':form})
js functions
have two seperate ajax function one for get (showing form) one for post(submitting form)
If you want to use templates on server's side, with FormView and ajax, I would suggest splitting templates into two parts - wrapper and form, load only wrapper via TemplateView, then fetch form with ajax. That allows you to send form with ajax and put responses (like form with errors) in wrapper.
Change your HTML template - take modal body's to another file, ex.:
project_detail.html
<script src="{% static '/experiments/js/invite_collaborator.js' %}"></script>
<div class="bootstrap-modal modal fade in" id="collaboratorModal" style="display: none;">
<div class="modal-body" id="collaboratorModalContent">
</div>
</div>
project_detail_content.html
<form action="{% url 'experiments:invite-collaborator' project_id=project.id %}" method="post" id=collaborator-form >
{% csrf_token %}
<div class="form-group">
{% if collaborator_form.errors %}
<ol>
{% for error in collaborator_form.errors %}
<li><strong>{{ error|escape }}</strong></li>
{% endfor %}
</ol>
{% endif %}
<label class="control-label">Invite someone by email</label>
<div class="input-group mt10">
{{ collaborator_form }}
<span class="input-group-btn">
<input name="collaborator-commit" onClick="invite({{project.id}});" class="btn btn-primary" data-disable-with="Send Invitation" id="invite-button" type="submit">
</span>
</div>
</div>
</form>
FormView should handle GET and POST - first one to get the form in project_detail_content.html into modal, second for sending email. Fortunately, FormView can do all that for us! (I don't know from where you get that project variable though)
View.py
class InviteCollaborator(FormView):
form_class = CollaboratorForm
template_name = 'experiments/project_detail_content.html'
def form_valid(self, form):
# This method is called when valid form data has been POSTed.
# It should return an HttpResponse.
project_id = self.request.POST['project_id']
current_project = Project.objects.get(id=project_id)
datas={}
cleaned_data = form.cleaned_data
email_address = cleaned_data.get('email_address')
user = User.objects.get(pk=request.user.id)
invitation_link = "http://exp.innovationhackinglab.com/projects/"+ str(current_project.id) + "/join/" + current_project.invitation_key
datas['user_name'] = user.first_name + ' ' + user.last_name
datas['email_from'] = user.email
datas['email_to'] = email_address
datas['invitation_link'] = invitation_link
form.sendEmail(datas)
data = simplejson.dumps("Success")
return HttpResponse(data, content_type='application/json')
Note few things - we use FormView, so for GET request it will return content of project_detail_content.html with CollaboratorForm, and on POST, same template with form and errors if form is invalid, or JSON with Success message otherwise.
What happened to project_detail.html? We will use TemplateView to create thw wrapper:
Url.py
urlpatterns = [
url(r'^invite_collaborator$', TemplateView.as_view(template_name="project_detail.html")),
url(r'^(?P<project_id>[0-9]+)/invite_collaborator/form$', views.InviteCollaborator.as_view(), name='invite-collaborator'),
]
Finally, JS
invite_collaborator.js
// In JS you need to make sure you fetch form from /project_id/invite_collaborator/form each time you show modal
$(document).ready(function(e) {
$('#collaboratorModalContent').load('invite_collaborator');
});
// Then, on submit we simply send data and handle response with success and error.
// With our current View, invalid form will generate successful response with form and error, so we need to check
function invite(project_id) {
$('#collaborator-form').submit(function(e) {
e.preventDefault();
$.ajax({
type: $(this).attr('method'),
url: $(this).attr('action'),
data: $(this).serialize()+'&'+$.param({ 'project_id': project_id }),
success: function ( response, status, xhr, dataType ) {
if( dataType === 'json' ){
//Make sure response is 'Success' and close modal
$('#collaboratorModal').modal('toggle');
$('#collaboratorModal').on('hidden.bs.modal', function () {
$(this).find("input,textarea,select").val('').end();
});
});
};
}
else {
// It's not JSON, it must be HttpResposne with forms and errors, so it goes into modal's body
$('#collaboratorModalContent').html(response)
}
}
});
I still don't know where and how you get/set you project variable, so maybe TemplateView is bad choice...
I would like to implement some JQuery elements in my Django website application to render it dynamical.
For exemple, users are filling a form and an alertbox appears depending if my Django form is well filled or not.
If Django form is well filled it'll give : "Form has been created"
If Django form is not correctly filled it'll give : "Please, look your form"
I tried some things and my html file looks like this :
<form class = "form" method='POST' action=''> {% csrf_token %}
<br></br>
{{ form.as_p}} <!-- Display child part formulary -->
<br></br>
<button onclick="myFunction()">Valider le formulaire</button>
</form>
{% if form.is_valid %}
<script>
function myFunction() {
alert("Le formulaire a été créé");
}
</script>
{% else %}
<script>
function myFunction() {
alert("Le formulaire n'a pas été créé car champ(s) invalide(s)");
}
</script>
{% endif %}
My view looks like :
def BirthCertificate_Form_unique_number(request) :
validity = []
#User fill some fields
query_social_number = request.GET.get('social_number')
query_social_number_father = request.GET.get('social_number_father')
query_social_number_mother = request.GET.get('social_number_mother')
if request.method == 'POST':
form = BirthCertificateForm2(request.POST or None)
if form.is_valid() : # Vérification sur la validité des données
post = form.save()
return HttpResponseRedirect(reverse('BC_treated2', kwargs={'id': post.id}))
...
How I could write this AlertBox in my files ?
Thank you !
PS : I am very new with JQuery. First time I'm using it
EDIT :
I tried something like this, but none alert appears :
<form class = "form" method='POST' action=''> {% csrf_token %}
<br></br>
{{ form.as_p}} <!-- Display child part formulary -->
<br></br>
<button type="input">Valider</button>
</form>
<script type="text/javascript" >
$(document).on('Valider', 'form.form', function(form) {
var $form = $(form);
$.ajax({
url:"/path_to_directory/BC_form2.html",
type: "POST",
success: function(form) {
alert("L'acte de naissance a été créé");
}
});
});
</script>
You can use ajax to submit your data to view then validate the data and return the json of your response. After that you can show the alert based on your return. You can use $.ajax(), $.get(), $.post() and other function based on what you need. Just make sure you can handle the data in ajax based on your response from view.
UPDATED
For you edit case you have to know more about the jQuery. Instead of
$(document).on('Valider', 'form.form', function(form)
you should
$(document).on('event', 'selector', function(form)
For event is kind of input or something happen that you would like to handle, for example when you want to handle click then you use click or something change you can use change.
For selector are some kind of id, class or other type that you got from you html element. So in your case if you want to use click event the code would be like
$(document).on('click', '.btn-validate', function(e){
var form = $(".form").serialize();
$.ajax({
url: "url_on_your_view and already registered in you url.py",
type: "POST",
success:function(response){
alert("L'acte de naissance a été créé");
}
});
}
for your button you have to update to
<button type="input" class="btn-validate">Valider</button>
I want to put loading image while saving data in database. So ,I Ajax call to do it. I use Django 1.8 and after put Ajax call Django not redirect default page after adding data successfully.I check data in save successfully and view.py method also run.
Before put Ajax call when I submit invalid data to forum and when submit it ,show validation errors.but now only view Ajax error message.
but after add ajax , now I enter submit without data didn't show above instruction(validation error). I used Django default validation an they are defined model class when create form.
----------------keylist.html------------------------------
{ % extends "base.html" %}
{% load crispy_forms_tags %}
{% block title %}
{% if create %}Create{% else %}New Key{% endif %}Serious
{% endblock %}
{% block heading %}
<h2>
Create New Serial Keys
</h2>
{% endblock %}
{% block content %}
{% if create %}
{% url "marcador_key_create" as action_url %}
{% else %}
{% url "marcador_bookmark_search" pk=form.instance.pk as action_url %}
{% endif %}
<form action="{{ action_url }}" method="post" accept-charset="utf-8" id="createForm" >
{{ form|crispy }}
{% csrf_token %}
<div id="submit_loader"></div>
<p> <b>Expiry Date*:</b> <input type="date" id="datepicker" name="expier_date"></p>
<p><input type="submit" class="btn btn-default" value="Save" id="save_button"> </p>
</form>
{% endblock %}
-------base.html (ajax method )-------------------------------------
<script>
// Attach a submit handler to the form
$("#createForm").submit(function (event) {
event.preventDefault();
//var formData = new FormData($("#createForm")[0]);
var serverUrl =$("#createForm").attr('action');
$.ajax({
url: serverUrl,
type: 'POST',
data: $("#createForm").serialize(),
beforeSend: function() {
$('#submit_loader').css('display','block');
},
complete: function(){
$('#submit_loader').css('display','none');
},
success: function (returndata) {
alert("succsesfully generate keys");
//window.location("xsd");
//return false;
},
error: function(data){
alert("please ,check you fill form correctly");
}
});
//return false;
});
</script>
---------view.py (calling method )----------------------------------
#login_required
def key_create(request):
#print(request.POST)
if request.method == 'POST':
form = KeyGenarateForm(data=request.POST)
expier_date = request.POST['expier_date']
#print(expier_date=="")
if(expier_date==""):
form.is_valid= False;
if form.is_valid():
#request.POST._mutable = True
Key_Gen = form.save(commit=False)
Key_Gen.save(expier_date)
return redirect('marcador_bookmark_user',username=request.user.username)
else:
print('form not valied')
return render('marcador_bookmark_user',username=request.user.username)
else:
form = KeyGenarateForm()
context = {'form': form, 'create_key': True}
return render(request, 'marcador/key_genarate_form.html', context)
I test when I enter valid data and submit , every thing successfully , but didn’t redirect my url.It show my old data in the field.
As,I noticed view.py return method not loading.
return redirect('marcador_bookmark_user',username=request.user.username)
not execute.
please , expect some expert help.
May be this will help you:
Instead of this redirection in views.py:
return redirect('marcador_bookmark_user',username=request.user.username)
use this:
return HttpResponse(json.dumps([{username=request.user.username}]),mimetype='text/json')
At last on ajax success function:
window.location.href = '/url-path'+data.username;
(username will be a key inside the context named "data").
I have a simple html page which renders with a number of nearly identical forms for the user to submit. Upon submit, the view is intended to add a row to the database, recreate the list of forms with slightly updated data, and send it back to the browser ('/route/complete/' maps to add_completed_route_view in urls.py).
This works perfectly the first time. Once the page has been redrawn with the new list of forms, however, the next submit will fail the request.is_ajax() test I have in the view. That causes it to skip to request.REQUEST['next'] and subsequently to home_view.
I've commented it out below, but I've also tried appending c['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest' to the view but it hasn't helped.
I'm looking for help in ensuring that the headers continue to have the appropriate XMLHttpRequest param while the user submits through AJAX. Code is below, and help is much appreciated.
script.js
<script>
$(document).ready(function() {
$(".doneForm").submit(function() {
var route_id = $(this).find('input[name=route_id]').val()
var next = $(this).find('input[name=next]').val()
var reqData = {route_id:route_id,next:next}
$.ajax({
type: "post",
url: "/route/complete/",
data: reqData,
success: function(data) {
$("#routeTable").html(data);
}
});
return false;
});
});
</script>
and
template.html
<div id="routeTable">
{% for route in route_list %}
<div id="routeDone">
<form class="doneForm" action="/route/complete/" method="post">
<input type="hidden" name="route_id" value="{{ route.route_id }}" />
<input type="hidden" name="next" value="{{ request.get_full_path }}" />
<input type="submit" value="Done" class="doneButton" />
</form>
</div>
{% endfor %}
</div>
and
views.py
def add_completed_route_view(request):
if request.method == 'POST' and request.user.is_authenticated():
add_completed_route(request)
if request.is_ajax():
wall_slug = get_wall_slug_from_route_id(request.REQUEST['route_id'])
c = get_context_for_wall_page(request, wall_slug)
# c['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
return render_to_response('m/js_route_table.html', c, context_instance=RequestContext(request))
else:
return HttpResponseRedirect(request.REQUEST['next'])
else:
return HttpResponseRedirect(reverse('home_view'))
The problem is that once the Ajax is completed, it replaces the original form with a new one - and this one no longer has the javascript event handler attached, so the next time the form submits via the normal POST method.
Luckily, jQuery has a couple of methods that handle this for you - live and delegate. So instead of $(".doneForm").submit(function() ..., do this:
$(".doneForm").live("submit", function() {...