I'm struggling with the datatables reordering. I want when user reorder to update table in the database. For this to happen i need:
to configure the datatable to send request to the server.
send the information about reordered datatable to flask endpoint.
Process data on the backend and update database table.
I have read the documentation but it is not clear to me.
My code:
$(document).ready(function () {
var dt = $('#data').DataTable({
rowReorder: true,
dom: 'Bfrtip'
});
});
My own solution:
JavaScript code:
dt.on('row-reorder.dt', function (e, details, edit) {
var slownik = {};
for (var i = 0, ien = details.length; i < ien; i++) {
let id_asortymentu = details[i].node.id;
let nowa_pozycja = details[i].newPosition+1;
console.log(id_asortymentu);
console.log(nowa_pozycja);
slownik[id_asortymentu] = nowa_pozycja;
}
req = $.ajax({
url: 'asortymenty/tabela_reorder',
dataType: "json",
type: 'POST',
data : JSON.stringify(slownik)
});
req.done(function(data){
if (data.result == 1){
console.log('Table reordered.');
}
});
});
Flask backend code:
#admin.route('asortymenty/tabela_reorder', methods = ['GET','POST'])
def table_reorder():
slownik=request.get_json('data')
for key, value in slownik.items():
asort = Asortyment.query.get(key)
print(asort.pozycja)
asort.pozycja = value
db.session.add(asort)
db.session.commit()
return jsonify({'result' : '1'})
Related
I'm looking for assistance with translating a piece of sample code written in javascript into something that will work with Python. The sample code is for the 'POST Authenticate' Endpoint of CCH Axcess' Open Integration Kit, which sends a response containing a Security Token
URL: https://api.cchaxcess.com/api/AuthServiceHelp/v1.0/help/operations/Authenticate
Sample Code:
var _restIntegratorKey = "{User Integrator Key}"; // Please use this variable as global variable as all subsequent call required this integrator key to pass
var _restHostUrl = "{host url}"; // i.e. "{Protocol}://{host name}/api"
var request = $.ajax({
url: _restHostUrl + "/AuthService/v1.0/Authenticate",
contentType: "application/json; charset=utf-8",
type: "GET",
dataType: "json"
});
var request = {
UserName: "{username}", // Specify Username
UserSid: "anyone",
Password: "{password}", // Specify Password
Realm: "{accountnumber}" // Specify Account number
};
var request = $.ajax({
url: _restHostUrl + "/AuthService/v1.0/Authenticate",
data: JSON.stringify(request),
beforeSend: _setHttpHeader,
contentType: "application/json",
type: "POST",
dataType: "json"
});
request.done(function (data, textStatus, jqXHR) {
// This method block will be executed on succefull execution of api and will return security token.
// Below statement will store returned security token into browser cookie named: "CchNGAuthToken". you can use any other way to persist this token.
// This security token we required to pass in header for other rest api calls
document.cookie = "CchNGAuthToken=" + data.Token;
});
request.fail(function (jqXHR, textStatus, err) {
// This method block will be executed if API returns any error.
});
// Please keep these below two methods, As both will be used in subsequent call, to get SSOToken from Cookie
// set Security token and integratorkey into request header
function _setHttpHeader(xhr) {
var ssoToken = _getSessionCookie("CchNGAuthToken"); // Read security token from document cookie which we set during authentication rest api call
xhr.setRequestHeader("Security", ssoToken);
xhr.setRequestHeader("IntegratorKey", _restIntegratorKey);
};
// Get session cookie
function _getSessionCookie(name) {
var key = name + "=";
var cookie = "";
if (document.cookie.length > 0) {
var begin = document.cookie.indexOf(key)
if (begin != -1) {
begin += key.length
var end = document.cookie.indexOf(";", begin);
if (end == -1)
end = document.cookie.length;
cookie = unescape(document.cookie.substring(begin, end))
}
}
return cookie;
};
I have an LIC file with the IntegratorKey stored in XML format, like:
<?xml version="1.0"?>
<IntegratorInfo>
<IntegratorKey>XXXXX-XXX-XXX-XXXX</IntegratorKey>
</IntegratorInfo>
I think my primary issue is identifying the values of the 'ssoToken' and '_restIntegratorKey' variables once they're assigned inside the '_setHttpHeader' function.
My attempt:
def getcchauth():
import requests
integratorkey = getintkey()
cookie = getcookie()
authheaders = {
'Security': cookie,
'IntegratorKey': integratorkey,
'content-type': 'application/json; charset=utf-8'
}
cchlogin = {
'UserName':"user",
"UserSid": 'anyone',
'Password': 'password',
'Realm' : '123456',
}
authattempt = requests.post(resthosturl+endpoint, data = cchlogin,
headers=authheaders)
print(authattempt.headers)
def getcookie():
import requests
import json
cookieresponse = requests.get(resthosturl+apiservdir,
headers = headers)
cookieresponse = json.dumps(cookieresponse.headers.__dict__['_store'])
cookieresponse = json.loads(cookieresponse)
cookie = 'CchNGAuthToken=' + cookieresponse['set-cookie'][1].split(';')[0].strip() + ';'
print(cookie)
return cookie
Thanks!
I have a model that references other models, I am trying to save data using ajax
Example:
class Friend(models.Model):
name = ...
class Main(models.Model):
name = ....
friend = models.ForeignKey(Friend, on_delete=models.CASCADE)
All body comes from ajax(fetch) request
I have a table (html), and add data to cells, then with the
enter event, send data.
Like this:
input.addEventListener("keyup", function (e) {
//in this scenario I already have the whole row
// get full_row `row_data`
post_ajax = {
method: "POST",
headers: {
"X-CSRFToken": crf_token, // I get it with a regular expression
"Content-Type": "application/json",
"X-Requested-With": "XMLHttpRequest",
Accept: "application/json",
},
body: JSON.stringify(row_data),
};
fetch("my_url", post_ajax)
.then((res) => res.json())
.catch((error) => console.error("Error:", error))
.then((response) => console.log("Success:", response));
});
My view function
def save_post(request):
if request.is_ajax and request.method == "POST":
body_unicode = request.body.decode('utf-8')
data = json.loads(body_unicode)
print('here the data arrives',data)
# here the data arrives {'name': 'Ale', 'friend_id': 22}
Main.objects.create(name=data['name'], friends=data['friend_id'])
return JsonResponse({"instance": data}, status=200)
return JsonResponse({"error": ""}, status=400)
This is the error
raise TypeError("%s() got an unexpected keyword argument '%s'" %
(cls.__name__, kwarg))
TypeError: Main() got an unexpected keyword argument 'Friends'
Any idea or suggestion?
EDIT:
When you are creating the Main object, try making the "friend" attribute an object, like this:
friend = Friend.objects.get(id=data['friend_id'])
Main.objects.create(name=data['name'], friend=friend)
Also, the main issue appears to be you are calling the column "friends" but it should be "friend" when you are creating the Main object.
This:
Main.objects.create(name=data['name'], friends=data['friend_id'])
Should be:
Main.objects.create(name=data['name'], friend=data['friend_id'])
PREVIOUS ANSWER:
Assuming you are using JQuery in the template to send an AJAX request, since you did not specify.
In your urls.py:
...
path('/api/post_friend/', post_friend_api, name="post_friend_api"),
...
In your template :
<script type="text/javascript">
$("#myBurron").click(function(){
var csrfToken = $( "input[name='csrfmiddlewaretoken']"); // assuming this is a form
var friend_name = $("#friend_name").val();
$.ajax({ url: '{% url 'post_friend_api' %}',
type: "POST",
dataType: "json",
data: {'friend':friend_name, 'csrfmiddlewaretoken':csrfToken.val()},
cache: false
}).done(function(data) {
if (data.result === true){
alert(data.message);
}
});
});
});
</script>
In your views.py:
from django.http import JsonResponse
def post_friend_api(request):
data = {}
if request.POST.get('friend', None) is not None:
friend_name = request.POST.get('post_note')
# save the object and indicate success
data['result'] = True
data['message'] = "Friend saved successfully"
...
if request.is_ajax():
return JsonResponse(data)
else:
return HttpResponseBadRequest()
When you are sending data via POST don't forget to pass along your CSRF token as in the example above. This assumes you have a form on the page you can get it from, otherwise you can use something like this to get it:
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie !== '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = cookies[i].trim();
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) === (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
var csrftoken = getCookie('csrftoken');
If you don't want to deal with the CSRF token, you can mark the view with the #csrf_exempt decorator and remove the 'csrfmiddlewaretoken' data element from the Ajax call in the template, but it may not be ideal or the most secure. An example of that:
from django.views.decorators.csrf import csrf_exempt
from django.http import JsonResponse
#csrf_exempt()
def post_note_api(request):
...
If you post more details I can update my answer.
I'm confused about how to do it via Ajax or Json, but how can I send the selection array (curCheck) on-click to Django views and receive it as a python array
javascript
document.getElementById('results').addEventListener('click', function(){
html_table = '<thead><tr><th>Currency</th><th>Amount</th><th>Symbol</th>><tr/><thead/>'
var checkElements = document.getElementsByClassName('ch');
for(var i =0; i< curname.length; i++){
if (checkElements[i].checked) {
var curChecked = curname[i];
var JsonArr = JSON.stringify(curChecked);
postcurChecked(JsonArr)
html_table += '<tr><td>' + curname[i] + '</td>';
}
}
document.getElementById('result_table').innerHTML = html_table;
},false;
ajax
function postsubChecked(curChecked) {
$.ajax({
"url": "http://127.0.0.1:8000/results/",
"type": "POST",
"data": {"checkbox": curChecked},
"headers": { 'X-CSRFToken': getCookie('csrftoken')}
})
}
in django
def currencyChecked(request):
body_unicode = request.body.decode('utf-8')
body_unicode = body_unicode.replace('%22','')
print(body_unicode) json_data = json.loads(body_unicode.read())
I would like to see the python array print to see it is passed to the back
but I keep getting this error:
json_data = json.loads(body_unicode.read()) AttributeError: 'str' object has no attribute 'read'
For getting the selected checkbox values and sending as an array using ajax you can use jquery like this:
consider you have multiple checkboxes and a button.
<input type="checkbox" name="imageName">
<input type="checkbox" name="imageName">
.......
<button id="deletePhoto">Delete</button>
after selecting multiple checkbox values click on this button. On clicking the below jquery will be triggered to make an arrya of selected checkbox values.
//jquery for getting the selelcted checkbox values
$(document).on("click","#deletePhoto",function(){
var favorite = [];//define array
$.each($("input[name='imageName']:checked"), function(){
favorite.push($(this).val());
});
alert("Photo Selected: " + favorite.join(", "));
if(favorite.length == 0){
alert("Select Photo to delete");
return false;
}
//ajax for deleting the multiple selelcted photos
$.ajax({type: "GET",
url: "/olx/deletePhotoFromEdit",
data:{
favorite:favorite
},
success: function(){
// put more stuff here as per your requirement
});
}
});
});
In the view you can get the array like this:
selected_photo = request.GET.getlist('favorite[]')
I am a new to Ajax/Python, I don't know how to POST a json value to my python server.
Python code:
#app.route('/ajouterContact', methods = ['POST'])
def ajouterContact():
data = json.loads(request.data)
#nom = request.form['nomContact'];
contact.append(data)
ajouter.make_response(json.dumps(contact), 201)
ajouter.headers['Content-Type'] = 'application/json'
JS code
$('#buttonAjouter').click(function() {
var nom = 'Tom';
var myObj = new Object();
myObj.nom = nom;
var jsonText = JSON.stringify(myObj);
var i = 0;
$.ajax({
url: '/ajouterContact',
data: jsonText,
type: 'POST',
dataType: "json",
success: function(response) {
console.log(response);
},
error: function(error) {
console.log(error);
}
});
});
I am getting this error on server side :
ValueError: No JSON object could be decoded
If anyone can help me on this..
Thank you!
You need to provide the contentType in your ajax request:
contentType: 'application/json;charset=UTF-8',
Then in your server try to debug something like this:
request.json
I am new to web development and trying to solve the following problem. My app has several checkboxes and I need to get values of checked checkboxes. Later, I use those values in further data manipulations and pass the final result using ajax. When I try:
values = request.args.getlist('check')
print values
the list is empty.
values = request.values.getlist('check')
doesn't work ether.
Flask portion:
#app.route('/smiles_to_chemfig')
def smiles_to_chemfig():
smiles_mol = request.args.get("smiles_mol")
values = request.args.getlist('check')
print values
lst = ' '.join(values)
chemfig, pdflink = smiles_mol_to_chemfig(lst,'-i direct', smiles_mol)
return jsonify(outcome = chemfig, pdf_link = pdflink)
ajax:
$(function(){
$("button#smiles").on('click', function(){
if ($('textarea[name=smiles_mol]').val()=="") {
//$("#txt_area").html("PLEASE FILL OUT THIS FIELD !")
alert("PLEASE FILL OUT THIS FIELD !");
}
else {
$.getJSON('/smiles_to_chemfig', {
smiles_mol: $('textarea[name=smiles_mol]').val()
}, function(data) {
$("#txt_area").text(data.outcome);
console.log(data.outcome);
$("#pdf").attr('src', data.pdf_link);
});
}
return false;
});
});
I suspect, that it has something to do with ajax because if I do not implement ajax everything woks good but I need to use ajax. Any suggestions and comments are highly appreciated!