How to use template helpers in meteor js? - mongodb

I am working on a project which needs to get parameters from url and insert it in mongodb.I i am using the below code,which is working but still some silly issues is causing a problem.
Below is the main.js code:
import { Template } from 'meteor/templating';
import { Dbs } from '../lib/collects.js';
import './main.html';
Router.route('/temp1/:ppid', function () {
this.render('temp1', {
data: function ()
{
var rpms = this.params.query.rpms;
return Dbs.findOne({patient_id:this.params.ppid});
}
});
});
Template.temp1.helpers({
'tempr': function() {
var p=Router.current().params.ppid;
var path1=Router.current().params.query.path;
var doc_id1 =Router.current().params.query.docid;
var temp1 = Router.current().params.query.temp;
var age1 = Router.current().params.query.age;
var gender1= Router.current().params.query.gender;
var height1= Router.current().params.query.height;
var weight1= Router.current().params.query.weight;
var tempr= Router.current().params.query.tempr;
Meteor.call('dbs.update',p,doc_id1,path1,temp1,age1,gender1,height1,weight1,tempr);
}
});
Below is main.html code:
<head>
<title>project1</title>
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
</head>
<body>
<nav class="#c5cae9 indigo lighten-4">
<div class="container">
<div class="nav-wrapper">
A3RMT
<ul id="nav-mobile" class="right hide-on-med-and-down">
</ul>
</div>
</div>
</nav>
<div class="row">
<div class="col s2">
</div>
</div>
</body>
<template name="a3">
<div class="row">
<div class="col s2">
<h4 class="black-text text-darken-4">INFORMATION</h4>
<table class="centered">
<form class="sub">
<tr>
<td><th>Doc_ID</th>{{doc_id}}</td>
<td><th>tempr</th>{{tempr}}</td>
<td><th>temp</th>{{temp}}</td>
</tr>
<tr>
<td><th>Path</th>{{path}}</td>
<td><th>age</th>{{age}}</td>
<td><th>gender</th>{{gendert}}</td>
<td><th>weight</th>{{weight}}</td>
<td><th>Height</th>{{height}}</td>
</tr>
</form></table></div></div>
</template>
The above code is working fine but the only issue is with line of code:"'tempr': function()".When i insert new parameters from url,its values are stored in database and even updated when i do update but it does not display value of "tempr" from database.And if i change 'tempr':function() to 'abc':function() i am not able to update nor insert anything into database. I am not understanding what am i suppose to use
Template.temp1.helpers({
'tempr': function() {
please anyone help me with this issue.How do i use template helpers
what do i need to specify at the place of "tempr" in
Template.temp1.helpers({'tempr': function()

The helper is used to work with data and supply it to the html dynamically. The template runs multiple times when the page loads. In your case, the dbs.update will be called many times over and over when the page loads. Ideally, any method call should be present in events. Eg. when you submit the form, update the db. If you want the update to happen each time the page loads, then have it put in the onRendered() method.
Probable solution:
Templates.<<template_name>>.events({
// on submit of a form or something similar
var p=Router.current().params.ppid;
var path1=Router.current().params.query.path;
var doc_id1 =Router.current().params.query.docid;
var temp1 = Router.current().params.query.temp;
var age1 = Router.current().params.query.age;
var gender1= Router.current().params.query.gender;
var height1= Router.current().params.query.height;
var weight1= Router.current().params.query.weight;
var tempr= Router.current().params.query.tempr;
Meteor.call('dbs.update',p,doc_id1,path1,temp1,age1,gender1,height1,weight1,tempr);
})

Related

Template not reactive in meteor on adding new data?

This are the event listeners for my two templates,specified in events.js
// event listeners on the addSiteForm template
Template.addCommentForm.events({
// this runs when they click the add button... you need to compete it
'click .js-add-comment':function(event){
var comment_text = $('#comment_input').val();// get the form value using jquery...
var user = 'anonymous person';
// the 'this' variable contains
// the data that this template is displaying
// which is the Website item
var site = this;
if (Meteor.user()){
user = Meteor.user().emails[0].address
}
var comment = {"text":comment_text,
"siteId":site._id,
"createdOn":new Date(),
"createdBy":user};// create a simple object to insert to the collectoin
Comments.insert(comment);
console.log("events start");
console.log("totla coomets are "+Comments.find({}).count()+"\n");
console.log("commenst in site "+Comments.find({siteId:site._id}).count()+"\n");
console.log("site id is "+site._id);
console.log("events end");
return false;
}
});
// event listeners on the addSiteForm template
Template.addSiteForm.events({
// this runs when they click the add button... you need to compete it
'click .js-add-site':function(event){
var url = $('#url_input').val();// get the form value using jquery...
var user = 'anonymous person';
if (Meteor.user()){
user = Meteor.user().emails[0].address
}
var site = {"url":url,
"createdOn":new Date(),
"createdBy":user};// create a simple object to insert to the collectoin
Websites.insert(site);
return false;
}
});
The router function is specified in router.js
Router.configure({
layoutTemplate: 'ApplicationLayout'
});
// the main route. showing the list of sites.
Router.route('/', function () {
this.render('siteList');
});
// this route is for the discussion page for a site
Router.route('/discussSite/:_id', function () {
var siteId = this.params._id;
site = Websites.findOne({_id:siteId});
this.render('discussSite', {data:site});
});
the main.js contain the collections
// shared code
Websites = new Mongo.Collection("websites");
Comments = new Mongo.Collection("comments");
helpers is
// this helper gets the data from the collection for the site-list Template
Template.siteList.helpers({
'all_websites':function(){
return Websites.find({});
},
'safer_email':function(email){
if (email.indexOf('#')!=-1){// we have an email
return email.split('#')[0];
}
else{// probably anonymouse.
return email;
}
}
});
Template.discussSite.helpers({
'comments':function(siteId){
//console.log("helper comments "+this.site);
// complete the code here so that it reruns
console.log(this.params.site._id);
return Comments.find({siteId:siteId});
// all the comments with a siteId equal to siteId.
}
});
the html file is in main.html.here it first displays the websites available in the webpage.On clicking this the user is routed to a new page.Here the user can add comments for the website
<head>
<title>week_4_peer_assessment</title>
</head>
<body>
</body>
<!-- this is the template that iron:router renders every time -->
<template name="ApplicationLayout">
<div class="container">
Home
{{>loginButtons}}
<h1>SiteAce - discuss your favourite websites</h1>
<!-- iron router will select what to render in place of yield-->
{{> yield }}
</div>
</template>
<template name="discussSite">
<h3>Discussing: {{url}} </h3>
{{> addCommentForm}}
<!-- write some code here that iterates through the comments and displays
the comment text and the author -->
<!-- clue - you have already written the 'comments' helper function -->
<ul>
{{#each comments}}
<li>{{text}} (added by {{safer_email createdBy}})
</li>
{{/each}}
</ul>
</template>
<template name="addCommentForm">
<div class="row">
<div class="col-lg-6">
<div class="input-group">
<input type="text" id="comment_input" class="form-control" placeholder="Enter your comment">
<input type="hidden" id="site_id" class="form-control" placeholder="Enter your comment">
<span class="input-group-btn">
<button class="btn btn-default js-add-comment" type="submit">Add!</button>
</span>
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
</div>
</template>
<template name="siteList">
Fill in the form and click submit to add a site:
{{>addSiteForm}}
<h3>Sites you have added:</h3>
<ul>
{{#each all_websites}}
<li>{{url}} (added by {{safer_email createdBy}})
<br/>discuss
<br/>visit site
</li>
{{/each}}
</ul>
</template>
<template name="addSiteForm">
<div class="row">
<div class="col-lg-6">
<div class="input-group">
<input type="text" id="url_input" class="form-control" placeholder="Enter website URL...">
<span class="input-group-btn">
<button class="btn btn-default js-add-site" type="submit">Add!</button>
</span>
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
</div>
</template>
The starup.js contains the start up code run by the server
Meteor.startup(function(){
if (!Websites.findOne()){// nothing in the database yet
var site = {"url":"http://www.google.com",
"createdOn":new Date(),
"createdBy":"Michael"};// create a simple object to insert to the collectoin
Websites.insert(site);
site = {"url":"http://www.yeeking.net",
"createdOn":new Date(),
"createdBy":"Janet"};// create a simple object to insert to the collectoin
Websites.insert(site);
site = {"url":"http://www.coursera.org",
"createdOn":new Date(),
"createdBy":"Jose"};// create a simple object to insert to the collectoin
Websites.insert(site);
}
});
This is what your template should be: (I removed safer_email. It was erroring. Not sure if it was something else you were working on.)
<template name="discussSite">
<h3>Discussing: {{url}} </h3>
{{> addCommentForm}}
<!-- write some code here that iterates through the comments and displays
the comment text and the author -->
<!-- clue - you have already written the 'comments' helper function -->
<ul>
{{#each comments}}
<li>{{text}} (added by {{createdBy}})</li>
{{/each}}
</ul>
</template>
helper:
your helper function is designed to take in siteId as an input, yet you are not passing one to it.
this._id or Router.current().params._id will get you the siteId that you are looking for. You'd used this.site._id which used to error out as this.site was not valid.You can further see what the this object contains by doing a console.log(this). That would have helped you sort this out faster.
'comments':function(){
console.log("site id in helper is ",this._id); // or Router.current().params._id;
console.log(Comments.find({siteId:this._id}).fetch());
return Comments.find({siteId:this._id});
}

Kendo UI Template with textfield and list of values

I have a form with a text field and a list of radiobuttons. It is displayed using a window popup. I can pass simple parameters to the template, but I don't know how could I pass a list of values. I need to generate dynamically the list of radiobuttons. I tested using the List View, but it repeats the textfields and labels on my form by each item in the list. Any suggestion?
<div id="products">
<div id="details" />
</div>
<script id="tmplSell" type="text/x-kendo-template">
<div align="left">
<p>Please, fill the fields </p>
<b>Product:</b> <br />
<input type="text" name="txtProduct" id="txtProduct" class ="k-textbox" /> <br />
<b>Specify Color:</b>
<!-- dynamic radio button list -->
<button type="button" id="Button1" class="k-button" onclick="send(); return false; ">Send</button>
</div>
</script>
<script>
var template = kendo.template($("#tmplSell").html());
var window = $("#products").data("kendoWindow");
record = {id:0}; //passing a simple value, I need to pass a list of objects like ({color:"red",available:"5"} {color:"blue", available:"1"}
var entryHtml = template(record);
$("#details").html(entryHtml);
window.open().center();
</script>
The following code is from kendo templates documentation (Overview of templates), Remember that inside the template you can use javascript expressions
<div id="example"></div>
<script id="javascriptTemplate" type="text/x-kendo-template">
<ul>
# for (var i = 0; i < data.length; i++) { #
<li>#= data[i] #</li>
# } #
</ul>
</script>
<script type="text/javascript">
//Get the external template definition using a jQuery selector
var template = kendo.template($("#javascriptTemplate").html());
//Create some dummy data
var data = ["Todd", "Steve", "Burke"];
var result = template(data); //Execute the template
$("#example").html(result); //Append the result
</script>
In your case, you can access any property using data[i].color or data[i].available

Error submitting form data using knockout and mvc

#model NewDemoApp.Models.DemoViewModel
#{
ViewBag.Title = "Home Page";
}
#*<script src="#Url.Content("~/Scripts/jquery-1.9.1.min.js")" type="text/javascript"></script>*#
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script src="#Url.Content("~/Scripts/knockout-3.3.0.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
<script type="text/javascript">
var viewModel;
var compViewModel, userViewModel;
$(document).ready(function () {
$(".wizard-step:visible").hide();
$(".wizard-step:first").show(); // show first step
$("#back-step").hide();
var result = #Html.Raw(Json.Encode(Model));
var viewModel = new DemoViewModel(result.userViewModel);
//viewModel.userViewModel.FirstName = result.userViewModel.FirstName;
//viewModel.userViewModel.LastName = result.userViewModel.LastName;
//viewModel.userViewModel.State = result.userViewModel.State;
//viewModel.userViewModel.City = result.userViewModel.City;
ko.applyBindings(viewModel);
});
var userVM = function(){
FirstName = ko.observable(),
LastName = ko.observable(),
State = ko.observable(),
City = ko.observable()
};
function DemoViewModel(data) {
var self = this;
self.userViewModel = function UserViewModel(data) {
userVM.FirstName = data.FirstName;
userVM.LastName = data.LastName;
userVM.State = data.State;
userVM.City = data.City;
}
self.Next = function () {
var $step = $(".wizard-step:visible"); // get current step
var form = $("#myFrm");
var validator = $("#myFrm").validate(); // obtain validator
var anyError = false;
$step.find("input").each(function () {
if (!validator.element(this)) { // validate every input element inside this step
anyError = true;
}
});
if (anyError)
return false; // exit if any error found
if ($step.next().hasClass("confirm")) { // is it confirmation?
$step.hide().prev(); // hide the current step
$step.next().show(); // show the next step
$("#back-step").show();
$("#next-step").hide();
//$("#myFrm").submit();
// show confirmation asynchronously
//$.post("/wizard/confirm", $("#myFrm").serialize(), function (r) {
// // inject response in confirmation step
// $(".wizard-step.confirm").html(r);
//});
}
else {
if ($step.next().hasClass("wizard-step")) { // is there any next step?
$step.hide().next().fadeIn(); // show it and hide current step
$("#back-step").show(); // recall to show backStep button
$("#next-step").show();
}
}
}
self.Back = function () {
var $step = $(".wizard-step:visible"); // get current step
if ($step.prev().hasClass("wizard-step")) { // is there any previous step?
$step.hide().prev().fadeIn(); // show it and hide current step
// disable backstep button?
if (!$step.prev().prev().hasClass("wizard-step")) {
$("#back-step").hide();
$("#next-step").show();
}
else {
$("#back-step").show();
$("#next-step").show();
}
}
}
self.SubmitForm = function (formElement) {
$.ajax({
url: '#Url.Content("~/Complaint/Save")',
type: "POST",
data: ko.toJS(self),
done: function (result) {
var newDiv = $(document.createElement("div"));
newDiv.html(result);
},
fail: function (err) {
alert(err);
},
always: function (data) {
alert(data);
}
});
}
self.loadData = function () {
$.get({
url: '#Url.Content("~/Complaint/ViewComplaint")',
done: function (data) {
debugger;
alert(data);
self.compViewModel(data);
self.userViewModel(data);
},
fail: function (err) {
debugger;
alert(err);
},
always: function (data) {
debugger;
alert(data);
}
});
}
}
</script>
<form class="form-horizontal" role="form" id="myFrm">
<div class="container">
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="wizard-step">
</div>
<div class="wizard-step" >
<h3> Step 2</h3>
#Html.Partial("UserView", Model.userViewModel)
<div class="col-md-3"></div>
<div class="col-md-6">
<input type="submit" id="submitButton" class="btn btn-default btn-success" value="Submit" data-bind="click: SubmitForm" />
</div>
<div class="col-md-3"></div>
</div>
<div class="wizard-step">
<h3> Step 3</h3>
</div>
<div class="wizard-step confirm">
<h3> Final Step 4</h3>
</div>
</div>
<div class="col-md-3"></div>
</div>
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6">
<input type="button" id="back-step" class="btn btn-default btn-success" value="< Back" data-bind="click: Back" />
<input type="button" id="next-step" class="btn btn-default btn-success" value="Next >" data-bind="click: Next" />
</div>
<div class="col-md-3"></div>
</div>
</div>
</form>
I am able to get the data from controller and bind it using knockout. There is a partial view that loads data from controller. But when submitting the updated data, I do not get the data that was updated, instead getting error that "FirstName" property could not be accessed from null reference. I just need to get pointers where I am going wrong especially the right way to create ViewModels and use them.
When you are submitting the form in self.SubmitForm function you are passing Json object which is converted from Knockout view model.
So make sure you are providing the data-bind attributes in all input tags properly. If you are using Razor syntax then use data_bind in Html attributes of input tags.
Check 2-way binding of KO is working fine. I can't be sure as you have not shared your partial view Razor code.
Refer-
http://knockoutjs.com/documentation/value-binding.html
In Chrome you can see what data you are submitting in Network tab of javascript developer console. The Json data that you are posting and ViewModel data structure you are expecting in controller method should match.
You can also change the parameters to expect FormCollection formCollection and check what data is coming from browser when you are posting.

create custom durandal modal

I am trying to develop custom modal plugin for durandal 2.1 to have my own logic and abstract it from the rest of my app here is what I have so far but something does not work and modal gets inserted in DOM twice
define(['jquery', 'knockout', 'plugins/dialog'], function ($, ko, dialog) {
var modal = {
install: function (config) {
dialog.addContext("Modal", {
addHost: function (theDialog) {
var body = $("body");
$('<div id="Dialog" class="AlignC"><div class="ModalHost"></div></div>').appendTo(body);
theDialog.host = $('#Dialog').get(0);
},
removeHost: function (theDialog) {
alert("demoving host");
$("#Dialog").remove();
},
compositionComplete: function (child, parent, context) {
var theDialog = dialog.getDialog(context.model);
}
});
}
};
return modal;
});
and here is how i call it from my viewmodel
dialog.show(this, null, 'Modal');
can anyone tell me what is wrang with this code why my model ELEMENT is inserted twice and ovelay each other. how can i fix that.
second element does not have content inside.
by the way here is view I am trying to show inside modal
<span class="Loader"></span>
<div class="Modal">
<h2 class="Caps">SomeName</h2>
<div class="Row">
<input type="text" />
</div>
<div class="Desc">
description
<br />
XXY YYX XXY
</div>
<div class="Buttons">
<span class="Green">Check</span>
<span>Add</span>
</div>
</div>
Ok I managed to fix this behavior. the problem with click binding was firing twice and this was the problem associated with inserting tow HTML elements in DOM after fixing click handler, everything works just fine.

Use code captcha in two forms

I have two forms on a page containing Google captcha code, but only one code works. Does anyone know if you can use the same code with the same key on two forms on the same page?,
Thks,
Yes, you can. But you have to explicitly render the widget as mentioned on the developer guide
you should use something like this on your front end(taken from the developer guide):
<html>
<head>
<title>reCAPTCHA demo: Explicit render for multiple widgets</title>
<script type="text/javascript">
var verifyCallback = function(response) {
alert(response);
};
var widgetId1;
var widgetId2;
var onloadCallback = function() {
// Renders the HTML element with id 'example1' as a reCAPTCHA widget.
// The id of the reCAPTCHA widget is assigned to 'widgetId1'.
widgetId1 = grecaptcha.render('example1', {
'sitekey' : 'your_site_key',
'theme' : 'light'
});
widgetId2 = grecaptcha.render(document.getElementById('example2'), {
'sitekey' : 'your_site_key'
});
grecaptcha.render('example3', {
'sitekey' : 'your_site_key',
'callback' : verifyCallback,
'theme' : 'dark'
});
};
</script>
</head>
<body>
<!-- The g-recaptcha-response string displays in an alert message upon submit. -->
<form action="javascript:alert(grecaptcha.getResponse(widgetId1));">
<div id="example1"></div>
<br>
<input type="submit" value="getResponse">
</form>
<br>
<!-- Resets reCAPTCHA widgetId2 upon submit. -->
<form action="javascript:grecaptcha.reset(widgetId2);">
<div id="example2"></div>
<br>
<input type="submit" value="reset">
</form>
<br>
<!-- POSTs back to the page's URL upon submit with a g-recaptcha-response POST parameter. -->
<form action="?" method="POST">
<div id="example3"></div>
<br>
<input type="submit" value="Submit">
</form>
<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit"
async defer>
</script>
</body>
</html>
I just wanted a HTML snipped which I can insert multiple times, each time displaying another captcha. Also, I did not want to take care for specific IDs assigned to the containers, which would be very annoying when multiple formulars still appearing on one page will be designed and rendered independently. Here is my solution.
<div class="g-recaptcha"></div>
<script type="text/javascript"><![CDATA[
function renderCaptchas() {
var captchaNodes = document.getElementsByClassName('g-recaptcha');
for (var i = 0; i < captchaNodes.length; i++) {
var captchaNode = captchaNodes[i];
if (!captchaNode.captchaRendered) {
captchaNode.captchaRendered = true;
grecaptcha.render(captchaNode, {"sitekey": "YOUR_SITE_KEY"});
}
}
}
]]></script>
<script src="https://www.google.com/recaptcha/api.js?onload=renderCaptchas&render=explicit" async="async" defer="defer"></script>