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();
}
});
Related
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>.
One template have button and another template have contains one text field.When ever button clicked that text filed append to the button template at the same time not remove the previous text fields that means the button clicked in 4 times 4 text fields add to the button template.
See the following code :
HTML Code :
<head>
<title>hello</title>
</head>
<body>
<h1>Welcome to Meteor!</h1>
{{> hello}}
</body>
<template name="hello">
Add Text Fields here :
<button>add another text box</button>
</template>
<template name="home">
<input type="text" id="name" />
</template>
JS Code :
if (Meteor.isClient) {
Template.hello.events({
'click button': function () {
//Here to write append logic
}
});
}
I didn't get any idea about this.So please suggest me what to do for this?
Use a client side only collection. Clicking adds a new record. Then in home template you loop on this. new Meteor.Collection(null) the null will tell it that it is local only and won't actually create the collection in the MongoDB.
if (Meteor.isClient) {
var buttonClicks = new Meteor.Collection(null),
clickCounter = 0;
Template.hello.events({
'click button': function () {
buttonClicks.insert({click: clickCounter++});
}
});
Template.home.helpers({
clicks: function () {
return buttonClicks.find({});
}
});
}
<template name="home">
{{#each clicks}}
<input type="text" id="name_{{click}}" />
{{/each}}
</template>
Code For LoginRegister.html
1.Main Page
2.All the templates are working fine.I think there is no issue regarding the html file
3.Problem is in the router.js file
<!--Home Template !-->
<template name="home">
{{> login}}
</template>
<!--Layout Template !-->
<template name="layout">
<header>
{{> topheader }}
</header>
{{> yield}}
</template>
<!--TopHeader Template !-->
<template name="topheader">
<h1>Welcome</h1>
</template>
<!--Login Template !-->
<template name="login">
<form class="form-horizontal">
<button type="submit" class="btn btn-default signin" id="signInBtn ">Sign in</button>
<button type="submit" class="btn btn-default signup" id="signUpBtn ">Sign Up</button>
</form>
</template>
<!--SignUP Template !-->
<template name="signup">
<h1>SIGNUP <small>Page</small></h1>
</template>
Router.js
This works correctly , When SignUp button is clicked , it flashes sigup template but again reloads home template with login page
Router.configure({
layoutTemplate: 'layout'
});
Router.map(function()
{
this.route('home',{path: '/'});
this.route('signup',{path: '/signup'});
})
loginRegister.js
Java Script File containing events for Both Button Click
if (Meteor.isClient) {
Template.login.events({
'click .signin': function(evt,tmpl){
alert("Sign in button is clicked");
console.log("Registration Form submitted.");
},
'click .signup':function(evt,tmpl)
{
Router.go('signup', {name: '/signup'});
}
});
}
Please help I am stuck and I am new to Meteor so unable to figure it out , and search does not generated good result
You need to prevent your button from submitting, so try something like this in your signup event handler code:
'click .signup':function(evt,tmpl)
{
evt.preventDefault(); // add this to prevent the button from submitting
Router.go('signup', {name: '/signup'});
}
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);
.....
});
i would like to trigger the visibility of a block in my handlebars template from an onclick function. i can use sessions and a helper function to get this to work but it seems overkill.
<template name="eventlist">
{{#each eventcollection}}
<div class="eventcontent">
name: {{name}} <br>
{{#if showdetail}}
detail: {{detail}}
{{/if}}
</div>
{{/each}}
</template>
could it be possible to make it work somehow like this?
Template.eventlist.events = {
'click .eventcontent': function() { this.showdetail = true}
}
meteor would just need to check if any attribute of this changed after the event completed and then rerender the template
Why bother Meteor? Such things were easy to achieve in the ancient Javascript days:
<template name="eventList">
{{#each eventCollection}}
<div class="eventContent">
name ...
<span class="eventHidden" style="display: none;">
detail ...
</span>
</div>
{{/each}}
</template>
Template.eventList.events({
'click .eventContent': function(e) {
$(e.target).find('.eventHidden').toggle();
},
});