We Keep Coding

How can i grab an element from a row on a datatable?

I have a simple datatable that shows some JSON data, received from an API endpoint.
I added a column that will hold a button on each row of the table. This button, when hit, will fire an AJAX request with the value of id for that specific row.
This actual code works, but now, instead of only sending the value of id, i would also like to edit the table so that, when the button is hit, it will send the values of id and item for that row. Can someone give me some piece of advice on how to do that?
On another question, i've been told to use Data Attributes, but i don't really know how would i integrate this into my current code. Any advice is appreciated.
$(document).ready(function() {
$(document).on('click', '.btnClick', function() {
var statusVal = $(this).data("status");
console.log(statusVal)
callAJAX("/request_handler", {
"X-CSRFToken": getCookie("csrftoken")
}, parameters = {
'orderid': statusVal
}, 'post', function(data) {
console.log(data)
}, null, null);
return false;
});
let orderstable = $('#mytalbe').DataTable({
"ajax": "/myview",
"dataType": 'json',
"dataSrc": '',
"columns": [{
"data": "item"
}, {
"data": "price"
}, {
"data": "id"
},],
"columnDefs": [{
"targets": [2],
"searchable": false,
"orderable": false,
"render": function(data, type, full) {
return '<button type="button" class="btnClick sellbtn" data-status="replace">Submit</button>'.replace("replace", data);
}
}]
});
});

You could use the full parameter of the DataTables render function to store the values of the current seleceted row. In this way:
return '<button type="button" class="btnClick sellbtn" data-status="' + btoa(JSON.stringify(full)) + '">Submit</button>';
In the above code, the data-status data attribute will contains the stringified version of the current object value in base64 by using btoa(). In base64 because for some reason we cannot directly store the stringified version of the object in the button's data attribute.
Then, in the button's click event, you have to do:
Decode the stringified object by using atob().
Parse into object by using JSON.parse().
Something like this:
$(document).on('click', '.btnClick', function() {
var statusVal = $(this).data("status");
// Decode the stringified object.
statusVal = atob(statusVal);
// Parse into object.
statusVal = JSON.parse(statusVal);
// This object contains the data of the selected row through the button.
console.log(statusVal);
return false;
});
Then, when you click in the button you will see this:
So, now you can use this object to send in your callAJAX() function.
See in this example:
$(function() {
$(document).on('click', '.btnClick', function() {
var statusVal = $(this).data("status");
// Decode the stringified object.
statusVal = atob(statusVal);
// Parse into object.
statusVal = JSON.parse(statusVal);
// This object contains the data of the selected row through the button.
console.log(statusVal);
return false;
});
let dataSet = [{
"id": 1,
"item": "Item 1",
"price": 223.22
},
{
"id": 2,
"item": "Item 2",
"price": 243.22
},
{
"id": 3,
"item": "Item 3",
"price": 143.43
},
];
let orderstable = $('#myTable').DataTable({
"data": dataSet,
"columns": [{
"data": "item"
}, {
"data": "price"
}, {
"data": "id"
}, ],
"columnDefs": [{
"targets": [2],
"searchable": false,
"orderable": false,
"render": function(data, type, full) {
// Encode the stringified object into base64.
return '<button type="button" class="btnClick sellbtn" data-status="' + btoa(JSON.stringify(full)) + '">Submit</button>';
}
}]
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="//cdn.datatables.net/1.10.20/js/jquery.dataTables.min.js"></script>
<link href="//cdn.datatables.net/1.10.20/css/jquery.dataTables.min.css" rel="stylesheet" />
<table id="myTable" class="display" width="100%"></table>
Hope this helps!

Angularjs Load "$ scope" in a table based on a select

I try to view the "$ scope" in the table to be displayed according to the select chosen. Keeping the default selection in the select.
The $scope that are in the json just a server. example : " status " : $ scope.DC01_GF1_STATUS "
Here is modeled : https://plnkr.co/edit/CaWNeIDHe2nFyEgDABvg?p=preview
$scope.templates = {"webapp": {
"Dc01": [
{
"name": "Groupe Froid 1A",
"value": "gf1a",
"data": {
"status": $scope.DC01_GF1_STATUS,
"capacite": $scope.DC01_GF1_CAP_T
},
},
{
"name": "Groupe Froid 3A",
"value": "gf3a",
"data": {
"status": $scope.DC01_GF3_STATUS,
"capacite": $scope.DC01_GF3_CAP_T
},
}]
}
};
Thank you

You are missing some data. You'll need to import it.
Here's an example: https://plnkr.co/edit/NPfRM0
relevant code:
// loading dummy status codes:
$scope.DC01_GF1_STATUS = 'status GF1'
$scope.DC02_GF1_STATUS = 'status GF2'
$scope.DC01_GF1_CAP_T = 10
$scope.DC02_GF1_CAP_T = 5
...
$scope.testBat = function(arg) {
...
$scope.capacite = $scope.templates.webapp[arg][0].data.capacite;
$scope.status = $scope.templates.webapp[arg][0].data.status;
...
}
index.html change
<p class="gfInterface">{{capacite}} %</p>

the problem comes from the declaration of the "$scope". The problem comes when I select a title in the "select" for example "Groupe Froid 3A" values "$scope" name, capacite and status does not change. Because the $scope of such name is $scope.name = $scope.templates.webapp[building][0].name; but for the selection "Groupe Froid 3A" the $scope should be $scope.name = $scope.templates.webapp[building][1].name;. And it is like for the rest. I would have come to retrieve the id or the value of intitullé selected to generate the $scope.name example. As for building variable $scope.templates.webapp[building][number].name. The variable retrieves the id of the selection.

Javascript/Jquery push json objects into array

I have an json object coming from a $.post in jquery.
In order to loop through and store the data clientside I would like to add it to an array. For each search results that comes back I would like to "append" the array so it grows.
This is my json:
{
"companies": [
{
"companyid": "115",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
},
{
"companyid": "116",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
} ]
}
This is what I have come up with so far were data is the json
comming back fron the post ajax request. Obj is just an object holding the array
which I declared further up in my code. obj.companies = new Array();
obj.companies.push(data['companies']);
The next part I need to loop out the array. Trying to do it like this.
$.each(obj.companies, function(i, item) {
// Does not alert correctly.
alert(item.header);
});
So I need to push the full json object into the array. But I cannot alert the item.header within the loop, how can I accomplish this?
EDIT:
Thanks everyone. Sorry if my question wasnt detailed enough.
I ended up doing this:
getcompanies: function() {
obj = this;
$.post('api/finder/result.php', {}, function(data) {
$.each(data.companies, function(i, item) {
obj.companies.push(item);
});
obj.loadcompanies();
}, "json");
},
loadcompanies: function() {
$.each(this.companies, function(i, item) {
alert(item.header);
}
}

I believe there is a issue with your server side code which is responsible for building JSON object which is getting returned via Ajax. The Correct JSON should be as follows:
{
"companies": [
{
"companyid": "115",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
},
{
"companyid": "116",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
}
]
}
Please note that there is only single key with name "companies" which holds an array of objects. Please correct your server side code to get such valid JSON. You can use free online JSON validator tools such as http://jsonlint.com/ to validate your JSON objects.
Now once you get such response from server; you just need to do following steps to get the companies array (following code will go into $.post success handler):
var jsonResp = JSON.parse(postResponse); //postResponse is the success resp of $.post
var companiesArray = jsonResp.companies;
$.each(companiesArray , function (index, valueObj){
var compId = valueObj.companyid;
var isSaved = valueObj.saved;
});
I hope this will help you a bit.

if you want to append new company into your companies array you should
var json_obj = {
"companies": [
{
"companyid": "115",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
},
{
"companyid": "116",
"saved": false,
"orgnumber": "010101010",
"companyname": "TestCompany",
"header": "header info"
} ]
};
//adding new company into your companies array
json_obj.companies.push({
"companyid":"117",
"saved" : false,
"orgnumber": "20120313",
"companyname":"anotherCompany",
"header":"another header info"
});
//if you want to loop through your companies list you can:
json_obj.companies.map(function ( obj ){
console.log(obj.companyid);
console.log(obj.companyname);
etc..
});

How can I filter results in typeahead.js using a second variable?

I am trying to filter results using Typeahead.js. I can currently filter the results using a field called activity_title. This works fine.
How can I filter my results by a second value? In this case, I would like to select only the results that have a certain value for activity_level. I need to set this when the typeahead is initialised rather than hard coding it into the Bloodhound initialisation (e.g. I don't want to use url: 'api/activity/&range=1,3')
I have the following valid JSON that I access remotely:
{
"meta": [
{
"name": "activity_id",
"table": "table",
"max_length": 4
},
{
"name": "activity_title",
"table": "table",
"max_length": 91
},
{
"name": "activity_level",
"table": "table",
"max_length": 2
}
],
"detail": [
{
"activity_id": "57",
"activity_title": "Help old ladies to cross the road.",
"activity_level": "2"
},
{
"activity_id": "58",
"activity_title": "Help mum with the washing up.",
"activity_level": "3"
},
{
"activity_id": "59",
"activity_title": "Shine my shoes",
"activity_level": "1"
},
{
"activity_id": "60",
"activity_title": "Put the bins out",
"activity_level": "1"
}
]
}
I set up a Bloodhound instance like this:
var activities = new Bloodhound({
datumTokenizer: function (datum) {
return Bloodhound.tokenizers.whitespace(datum.activity_title);
},
queryTokenizer: Bloodhound.tokenizers.whitespace,
prefetch: {
url: '/api/activity/',
filter: function(data) {
return $.map(data['detail'], function(detail) {
return {
activity_id: detail.activity_id,
activity_title: detail.activity_title,
objective_level: detail.objective_level
};
});
}
}
});
I use Typeahead.js to do a lookup on the data as I type.
$( document ).on( "focus", ".typeahead-init", function() {
// + '&range=' + minimum + ',' + maximum
var minimum = $('#group-level-min-1').val();
var maximum = $('#group-level-max-1').val();
$(this).typeahead({
highlight: true
},
{
name: 'activity_title',
displayKey: 'activity',
source: activities.ttAdapter(),
templates: {
header: '<div class="header-name">Activities</div>',
empty: [
'<div class="empty-message">',
'No activities match your search',
'</div>'
].join('\n'),
suggestion: Handlebars.compile('<div class="typeahead-activity" id="typeahead-activity-{{activity_id}}"><strong>{{objective_level}}</strong> - {{activity_title}}</div>')
}
})
//info on binding selection at https://github.com/twitter/typeahead.js/issues/300
.bind('typeahead:selected', function(obj, datum, name) {
var target = $(this).closest('.activity-container');
var activityId = datum['activity_id'];
var url = '/api/activity/id/'+activityId;
$(target).children('.activity-id').val(activityId);
//http://runnable.com/UllA9u8MD5wiAACj/how-to-combine-json-with-handlebars-js-for-javascript-ajax-and-jquery
var raw_template = $('#activity-output').html();
// Compile that into an handlebars template
var template = Handlebars.compile(raw_template);
// Fetch all data from server in JSON
$.get(url,function(data,status,xhr){
$.each(data,function(index,element){
// Generate the HTML for each post
var html = template(element);
// Render the posts into the page
target.append(html);
});
});
});
$(this).removeClass("typeahead-init");
$(this).focus();
});
This has been cobbled together from several answers on Stackoverflow and others. Any help greatly appreciated.

Show tree structure data in select box - JQuery, jSon, Ajax

I want to show nested data in either "Ul" and "li" or box but have to show in tree structure.
So in Json, i am receiving folder structure and I don't know how many folders level Json file has. So I have to write my code to pull the data from JSon file and show the data as tree structure based on the levels.
I am also not sure how my JSon file should look like but i came up with this sample JSon file.
So what I need is if some one just point me to the correct direction that for achieve the functionality, what structure of JSon file i need to create and what my Ajax Jquery code should look like
JSON file
{
"folder": [
{
"id":"11"
"name: "test1",
"path": "site/test1",
"children": [
"12",
"13"
]
},
{
"id":"12",
"name":"sub test1",
"path":"site/test1/subtest1",
"children":[
"21"
]
},
{
"id":"13",
"name":"sub test 2",
"path":"site/test1/subtest2",
"children":[]
},
{
"id":"21",
"name":"sub sub test 1",
"path":"site/test1/subtest1/subsubtest1",
"children":[]
},
{
"id":14",
"name":"test2",
"path":"site/test2",
"children":[]
}
]
}
sample JQUERY Code
$.ajax({
dataType: "json",
url: "http://localhost/web/folder.json",
success: function(obj) {
$.each(obj.folder, function (key, value) { // First Level
console.log(value.name);
$.each(value.children, function (k, v) { // The contents inside stars
console.log(v);
});
});
}
});