Im creating a an instant messenger app and im having a little trouble routing it. So, once you go into the app. There is a list of available users. You can click on a user and start chatting. The issue I have is once I click send, the console show an Uncaught TypeError: Cannot read property 'value' of undefined. Im not sure what im doing wrong here. Also I need help show the chat messages sent above. As if you can see the recent and previous messages. Here are my codes. Any examples and helps would be great.
HTML
minstant
<body>
</body>
<!-- this is the main template used by iron:router to build the page -->
<template name="ApplicationLayout">
{{> yield "header"}}
<div class="container">
{{> yield "main"}}
</div>
</template>
<!-- top level template for the nav bar -->
<template name="navbar">
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="/">
Minstant!
</a>
</div>
<div class="nav navbar-nav">
{{> loginButtons}}
</div>
</div>
</nav>
</template>
<!-- Top level template for the lobby page -->
<template name="lobby_page">
{{> available_user_list}}
</template>
<!-- display a list of users -->
<template name="available_user_list">
<h2>Choose someone to chat with:</h2>
<div class="row">
{{#each users}}
{{> available_user}}
{{/each}}
</div>
</template>
<!-- display an individual user -->
<template name="available_user">
<div class="col-md-2">
<div class="user_avatar">
{{#if isMyUser _id}}
<div class="user_avatar">{{getUsername _id}} (YOU)
<br/>
<img src="/{{profile.avatar}}" class="avatar_img">
</div>
{{else}}
<a href="/chat/{{_id}}">
{{getUsername _id}}
<br/>
<img src="/{{profile.avatar}}" class="avatar_img">
</a>
{{/if}}
</div>
</div>
</template>
<!-- Top level template for the chat page -->
<template name="chat_page">
<h2>Type in the box below to send a message!</h2>
<div class="row">
<div class="col-md-12">
<div class="well well-lg">
{{#each recentMessages}}
{{> message}}
{{/each}}
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<form class="new-message">
<input class="input" type="text" name="chat" placeholder="type a message here...">
<button class="btn btn-default">Send</button>
</form>
</div>
</div>
</template>
<!-- simple template that displays a message -->
<template name="message">
<div class = "container">
<div class = "row">
<div class = "username">{{username}}
<img src="/{{profile.avatar}}" class="avatar_img">
</div>
<div class = "message-text"> said: {{messageText}}</div>
</div>
</div>
</template>
Here is my JS
Messages = new Mongo.Collection("messages");
if (Meteor.isClient) {
Meteor.subscribe("messages");
Meteor.subscribe("userStatus");
// set up the main template the the router will use to build pages
Router.configure({
layoutTemplate: 'ApplicationLayout'
});
// specify the top level route, the page users see when they arrive at the site
Router.route('/', function () {
console.log("rendering root /");
this.render("navbar", {to:"header"});
this.render("lobby_page", {to:"main"});
});
// specify a route that allows the current user to chat to another users
Router.route('/chat/:_id', function () {
this.render("navbar", {to:"header"});
this.render("chat_page", {to:"main"});
});
///
// helper functions
///
Template.available_user_list.helpers({
users:function(){
return Meteor.users.find();
}
})
Template.available_user.helpers({
getUsername:function(userId){
user = Meteor.users.findOne({_id:userId});
return user.profile.username;
},
isMyUser:function(userId){
if (userId == Meteor.userId()){
return true;
}
else {
return false;
}
}
})
Template.chat_page.helpers({
recentMessages: function () {
return Messages.find({}, {sort: {createdAt: 1}});
return Meteor.users.find();
},
});
Template.chat_page.events({
// this event fires when the user sends a message on the chat page
'submit .new-message':function(event){
event.preventDefault();
var text= event.target.text.value;
// stop the form from triggering a page reload
event.target.text.value = "";
// see if we can find a chat object in the database
// to which we'll add the message
Meteor.call("SendMessage", text);
},
});
};
Meteor.methods({
sendMessage: function (messageText) {
if (! Meteor.userId()) {
throw new Meteor.Error("not-authorized");
}
Messages.insert({
messageText: messageText,
createdAt: new Date(),
username: Meteor.user().username
});
}
});
// start up script that creates some users for testing
// users have the username 'user1#test.com' .. 'user8#test.com'
// and the password test123
if (Meteor.isServer) {
Meteor.startup(function () {
if (!Meteor.users.findOne()){
for (var i=1;i<9;i++){
var email = "user"+i+"#test.com";
var username = "user"+i;
var avatar = "ava"+i+".png"
console.log("creating a user with password 'test123' and username/ email: "+email);
Meteor.users.insert({profile:{username:username, avatar:avatar}, emails: [{address:email}],services:{ password:{"bcrypt" : "$2a$10$I3erQ084OiyILTv8ybtQ4ON6wusgPbMZ6.P33zzSDei.BbDL.Q4EO"}}});
}
}
},
),
Meteor.publish("messages", function () {
return Messages.find();
});
Meteor.publish("userStatus", function() {
return Meteor.users.find({ "status.online": true });
});
};
The error is with your form submit code. In the console you can see the error is in Template.chat_page.events.submit .new-message on line 73. That will take you right to the error code:
'submit .new-message':function(event){
event.preventDefault();
var text = event.target.text.value;
// stop the form from triggering a page reload
event.target.text.value = "";
}
event.target.text.value doesn't exist. event.target does, but there is no field for text. There is textContent, and you can access the children of the target (which in this case is the form). Put in a console.log(event); and figure out what you are trying to access within the javascript console and then use that to determine what your code should look like. This might work for you:
'submit .new-message':function(event){
event.preventDefault();
var text = event.target.elements.chat.value;
// stop the form from triggering a page reload
event.target.text.value = "";
}
event.target.elements.chat.value comes from the name field of the <input>.
Related
I am very new to meteorjs and to web development in general.
I have 2 templates, and one is housed inside another. Is it possible to get the instance of the one inside a template so I can perform some jquery actions in it?
<template name="customTemplate">
<div>
<button class="start">StartUpload</button>
</div>
</template>
.....
<template name="postItem">
<div class="container">
<h1>POST!!!!</h1>
{{> customTemplate }}
<button class="buttonPost">Post new item</button>
</div>
</template>
Template.postItem.events({
"click .buttonPost": function(e, template) {
// I'd like to get the instance of customTemplate here so I can
// manually click the "start" button
}
});
Use template instance:
This is an example:
HTML:
<body>
<h1>Welcome to Meteor!</h1>
{{> hello}}
</body>
<template name="hello">
<button class="sayHello">Click Me</button>
{{> sayGoodbye}}
</template>
<template name="sayGoodbye">
<button class="goodbye">
Goodbye
</button>
</template>
JS
Template.sayGoodbye.events({
"click .goodbye":function(evetnt){
console.log("sayGoodbye is clicked");
}
});
Template.hello.events({
"click .sayHello":function(event){
Template.instance("sayGoodbye").$(".goodbye").click();
}
});
This was a general example. In your occassion:
Template.postItem.events({
"click .buttonPost": function(e, template) {
// I'd like to get the instance of customTemplate here so I can
// manually click the "start" button
Template.instance("customTemplate").$(".start").click();
}
});
The code below should insert the selected item value in the Tasks collection, retain the info for later use, and a headerLabel should show the task selected. I am not able to get the headerLabel to show the task when the click .menuItem function runs. Thanks
Tasks = new Mongo.Collection('tasks');
Template.mainMenu.events({
'click .menuItem': function(event){
Tasks.insert({menuItem: $(event.currentTarget).data('value')});
}
});
Template.header.helpers({
headerLabel: function( id ){
return Tasks.findOne({_id: id}).menuItem;
},
tasks: function(){
return Tasks.find();
}
});
<template name="mainMenu">
<div class="container">
<div class="row">
<section class="col-xs-12">
<div class="list-group">
{{#each menuItems}}
<a href="#" class="list-group-item menuItem" data-value={{menuItem}}>
<img src="/abc.png">
{{menuItem}} <span class="badge">></span>
</a>
{{/each}}
</div>
</section>
</div>
<template name="header">
<h1><button class="col-xs-2 mainMenu" type="button">☰</button></h1>
<h3>
<label class="col-xs-8 text-center">
{{#if headerLabel}} {{headerLabel}} {{else}} Select an item {{/if}}
</label>
</h3>
<h1><button class="col-xs-2" type="button">⋮</button></h1>
</template>
Assuming that the click can happen multiple times, you'll need to pass an _id for the appropriate task into your helper:
Tasks = new Mongo.Collection('tasks');
Template.mainMenu.events({
'click .menuItem': function(event){
Tasks.insert({menuItem: $(event.currentTarget).data('value')});
}
});
Template.header.helpers({
headerLabel: function( id ){
var task = Tasks.findOne({_id: id});
if( task ) {
return task.menuItem;
}
},
tasks: function() {
return Tasks.find();
}
});
So what I'm doing there is saying find one task's menuItem that has the ID passed to the helper. I also added a tasks helper to get all tasks. So your template might look something like:
<template name="mainMenu">
{{#each task in tasks}}
<h4>{{headerLabel task._id}}</h4>
<!-- Additional code here... -->
{{/each}}
</template>
You'll obviously need to customize the HTML to your specific situation, but that should give you the gist. Hope that helps!
As mentioned in the title, the modal does not show up.
The content of the form is loaded via formly and the content of the template seems to load, but it only shows the modal very thin, with the overlay but not the content.
I have a main controller in which I have:
$scope.add = function(){
$modal.open({
templateUrl: 'app/js/templates/popupAddCarForm.html',
controller: 'FormsController',
controllerAs: 'vm',
backdrop: 'static',
resolve: {
formData: function(){
return {
fields: getFormFields(),
model: {}
}
}
}
});
};
My html is like so:
<script type="text/ng-template" id="popupAddCarForm">
<div class="modal">
<div class="modal-dialog">
<div class="modal-header">
<h3 class="modal-title">Adauga masina</h3>
</div>
<div class="modal-body">
<form name="vm.addCarForm">
<formly-form model="vm.formData.model" fields="vm.formData.fields">
</formly-form>
</form>
</div>
<div class="modal-footer">
<button class="btn btn-default" type="submit" >Adauga</button>
</div>
</div>
</div>
And my form controller like so:
davidintercar.controller('FormsController',
function($modalInstance, formData) {
var vm = this;
//debugger;
vm.formData = formData;
vm.originalFields = angular.copy(vm.formData.fields);
}
);
The result is like so:
LATER EDIT:
In order to rid ourselfes of other doubts, here is the code from the demo:
app.controller('ModalInstanceCtrl', function ($modalInstance, formData) {
var vm = this;
debugger;
// function assignment
vm.ok = ok;
vm.cancel = cancel;
// variable assignment
vm.formData = formData;
vm.originalFields = angular.copy(vm.formData.fields);
// function definition
function ok() {
$modalInstance.close(vm.formData.model);
}
function cancel() {
$modalInstance.dismiss('cancel');
};
});
Link: angular-formly.com/#/example/integrations/ui-bootstrap-modal
LATER, LATER EDIT:
Plunker: http://plnkr.co/edit/8wgL4t2oXsFFeLBKGGW8?p=preview
Folder Structure:
--app
----js
------controller
------services
------templates
------view
----app.js
intex.html
My popupAddCarForm.html is in the templates directory, but as you see in the plunker, it does not render my loaded content, even in the same directory although a separate template file.
The modal template don't need to have the modal and modal-dialog layer - they will be generated by bootstrap.
<script type="text/ng-template" id="popupAddCarForm.html">
<div class="modal-header">test
<h3 class="modal-title">Adauga masina</h3>
</div>
<div class="modal-body">
<form name="vm.addCarForm">
<formly-form model="vm.formData.model" fields="vm.formData.fields">
</formly-form>
</form>
</div>
<div class="modal-footer">
<button class="btn btn-default" type="submit" >Adauga</button>
</div>
</script>
I'm really struggling with this one. If you want to view what I have bludgeoned together, it is all in a repo on GitHub called instructor-oracle. What I would like to do is have the landing page be the layout at ./wbs. Then I would like the search to route to ./wbs/:_wbsCode and populate the sidebar with the appropriate record. I am thinking the router needs to be structured something like...
Router.configure({
layoutTemplate: 'layout'
});
Router.map(function () {
this.route('wbs', {
path: '/wbs'
}, function () {
this.render('wbs-detail', {
path: '/wbs/:_wbsAbbrev',
to: 'wbs-detail',
data: function () {
theOne = Wbs.findOne({abbrev: this.params._wbsAbbrev});
console.log(theOne.abbrev);
return theOne;
}
});
});
...and this would be paried with templates like...
<template name="layout">
<header class="container-fluid">
<nav class="navbar navbar-default" role="navigation">
<div class="navbar-header">
<a class="navbar-brand" href="{{pathFor 'wbs'}}">Instructor Oracle</a>
</div>
<div class="collapse navbar-collapse" id="bs-navbar-collapse">
<form class="navbar-form navbar-left" role="search" id="wbsSearchForm">
<div class="form-group">
<input
class="form-control typeahead"
name="wbsSearch"
id="wbsSearch"
type="text"
placeholder="Search"
autocomplete="on"
spellcheck="off"
autofocus="true"
/>
</div>
<button type="submit" class="btn btn-default">Find</button>
</form>
</div>
</nav>
</header>
<main class="container-fluid">
{{> yield}}
</main>
</template>
<template name="wbs">
<div class="col-sm-3" id="wbsCol">
{{> yield 'wbs-detail'}}
</div>
<div class="col-sm-9" id="timesheetCol">
<iframe src="http://iframeurl.html" id="timesheetFrame"></iframe>
</div>
{{#contentFor 'wbs-detail'}}
<h1>{{abbrev}} <small>{{code}}</small></h1>
{{/contentFor}}
</template>
...and an event handler for the form like this...
Template.layout.events({
// catch submit event for wbs form
'submit': function (event, template) {
// prevent default behavior and stop bubbling
event.preventDefault();
event.stopPropagation();
// store dom element in variable
var inputElement = template.find('input#wbsSearch');
// access value in form and extract abbreviation if found
var abbrev = Wbs.findOne({abbrev: (inputElement.value).toUpperCase()}).abbrev;
// clear input
inputElement.value = "";
// go to the page
Router.go('wbs-edit', {_wbsAbbrev: abbrev});
}
});
I have been trying to sort through this on the iron:router documentation, but right now I am all kinds of lost (obviously). Still, I need this to work to avoid reloads on the main layout template so the iframe does not reload while the sidebar can change along with the matching url so links to specific sidebar content can be bookmarked and shared.
Thank you in advance for your assistance. If I eventually sort all of this out, I am more than happy to contribute to the iron:router documentation so it makes sense for the next pea-brained idiot like myself who happens to need to sort this out.
I am developing a meteor.js application. I have two main templates/pages, home.html and groups.html. I render these templates according to the selection of main menu. In home template, I just show basic informations about the website. But in groups template, I have side menu which has timeline, chat, group blog options, and according to the selection of side menu, I render timeline or chat or groupblog templates inside groups template. I succeeded this with two different methods.
Can you please tell me if any of them is correct approach, and if they both are, which one is better to use?
In the first approach, is there any way to wait to render sub-template until data is ready, like waitOn property in iron-router?
First approach: I am using dynamic template, and rendering and setting data contex of sub-templates by using Session variable.
layout.html
<template name="layout">
<div>
{{> header}}
<div id="main" class="container">
{{> yield}}
</div>
</div>
</template>
groups.html
<template name="groups">
<div class="row">
<div class="row-fluid">
<div class="col-md-9 col-lg-9">
{{> dynamictemplate}}
</div>
</div>
</div>
</template>
dynamictemplate.html
<template name="dynamictemplate">
{{#DynamicTemplate template=getTemplate data=getData}}
Default content when there is no template.
{{/DynamicTemplate}}
</template>
dynamictemplate.js
Template.dynamictemplate.helpers({
getData: function () {
var tempname="timeline";
if(Session.get("menuitemselected")!=null){
tempname =Session.get("menuitemselected");
}
if(tempname=="timeline"){
return {test:123};
}else if(tempname=="calendar"){
return {groupId:this._id};
}
},
getTemplate: function () {
var tempname="timeline";
if(Session.get("menuitemselected")!=null){
tempname =Session.get("menuitemselected");
}
return tempname;
}
});
Second approach, I am defining new routes for all sub-templates in routes, and I am using yield with region property in home template.(I do not know if i am supposed to use yield in any place other than layout.html)
layout.html
<template name="layout">
<div>
{{> header}}
<div id="main" class="container">
{{> yield}}
</div>
</div>
</template>
groups.html
<template name="groups">
<div>
<div class="col-md-3">
{{> sidemenu}}
</div>
<div id="main" class="col-md-9">
{{> yield region="detailrender"}}
</div>
</div>
</template>
router.js
.....
this.route('groupdetail', {
path: '/groupsmain/:_id',
layoutTemplate: 'layout',
yieldTemplates: {
'timeline': {to: 'detailrender'}
},
data: function() { return Groups.findOne(this.params._id);
}
});
this.route('groupdetailcalendar', {
path: '/groupsmain/:_id/calendar',
layoutTemplate: 'layout',
template: 'groupdetail',
yieldTemplates: {
'calendar': {to: 'detailrender'}
},
data: function() { return Groups.findOne(this.params._id);
.....
});