Laravel routing behavior with PJAX not as expected - javascript

I'm building my first lavavel website from scratch and I've run into a behavioral issue with a few routes.
Here is the relevant code for my routes file:
Route::get('work', 'PageController#work');
Route::get('work/{item}', 'PageController#workitem');
And here are the relevant methods:
public function work() {
return view('pages.work');
}
public function workitem($item) {
$v = 'work.'.$item;
if(view()->exists($v)) {
return view($v);
} else {
return view('errors.noitem');
}
}
And here is the relevant part of my view:
#extends('layout')
#section('content')
...
<div class="workflex">
<a class="workitem" href="/work/test"></a>
<a class="workitem" href="/work/test2"></a>
</div>
<div id="loadContent" class="loadContent">
#yield('insert')
</div>
...
#stop
It is worth mentioning that I intend to load the individual workitem pages with PJAX. I have views that the PJAX loads into the the "insert" section based on the URL:
$(document).pjax('a.workitem', '#loadContent');
The user loads the initial work page at the /work subdirectory, and clicks a button to load /work/item pages with PJAX. As the routes suggest, I also want the user to be able to enter a workitem into the URL and be directed to the work page already loaded with that item. This whole system behaves as intended... until I added the following jquery to work.blade.php:
$(document).ready(function() {
$('#loadContent').load("/work/init", function() {
myFade('#loadContent > *', 1); //ignore this function, it's an animation irrelevant to my problem
});
});
This is here as an attempt to load a initial message inside the PJAX loading div #loadContent to tell the user to select a workitem. However, a side effect of this is that now whenever I browser to a /work/item directly (PJAX still loads the pages correctly) the document triggers this jquery and the message overrides the page content.
I was brainstorming ways to allow the work() method in my controller to trigger something that loads this script or passes just the work/init view into the "insert" section.
What do you think would be the best way to solve this? Your answers are greatly appreciated.

I was able to answer my own question. I forgot about the route optional parameters. I changed/added these things:
Route::get('work/{item?}', 'PageController#work');
and in my controller:
public function work($item = 'init') {
$v = 'work.'.$item;
if(view()->exists($v)) {
return view($v);
} else {
return view('errors.noitem');
}
}
Works perfectly now!

Related

jQuery load dynamic content and make it accessible with a url

I have little time studying JavaScript and jQuery and would like to learn how to load dynamic content in a div of the site by a button and the loaded content create a new url to be indexable and could share with friends social networks, etc.
I created a function that is called with the onclick event of a button. The function takes two parameters, the div where to load the content and the path where the content to be loaded is stored:
function contentLoad(nameDiv, url)
{
$(name).load(url, function() {
});
}
button:
Moon
I do not know if I'll be doing well. The code still being very simple and charge me works perfectly content. But I'd like to load content would generate a new url that was accessible and that the link could be shared. How could I get it?
I think we need to store data loaded into a content with jQuery url when attempting to access, mount everything automatically and show visitors the web with dynamic content already loaded.
See if you can guide me in the process and that steps need to get it. Thanks to all.
You can use "client routes", using the hash tag in your url, and than some js lib which can handle this routes, for instance you can use director js, here is an example:
$(function() {
var author = function () {
// Load your content using AJAX
$("#content").html("author");
};
var viewBook = function (bookId) {
$("#content").html("viewBook: bookId is populated: " + bookId);
};
var routes = {
'/author': author,
'/books/view/:bookId': viewBook
};
var router = Router(routes);
router.init();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Director/1.2.8/director.js"></script>
<div id="content"></div>
<ul>
<li>#/author</li>
<li>#/books/view/1</li>
</ul>

execute action (javascript function) after ember template is rendered

I have very small web page with emberjs, where I want to show some item list and openlayers map for them, and another map for selected item.
Something like that:
<script type="text/x-handlebars" id="list">
<div class="list">
<div id="list_map"></div>
</div>
{{outlet}}
</script>
<script type="text/x-handlebars" id="list/item" >
<div class="item">
<div id="item_map"></div>
</div>
</script>
<script>
function showListMap() {
listMap = new ol.Map({target:'list_map'});
}
function showItemMap() {
itemMap = new ol.Map({target:'item_map'});
}
</script>
There is no problem to display map for list:
model: function(params) {
var content = [];
var url = 'http://localhost:8080/app/list';
$.ajax({
url: url,
success: function(surveys) {
content.pushObjects(surveys);
showListMap();
}
});
return content;
}
and I have action in item controller that is executed, when opening selected item, but if I try to create item map there (in controllers action) it fails (afaik because there is no such div at that moment in DOM).
So if I could execute action or my function after div is already add to DOM, it should work.
And question would be, how to execute something after template is added to DOM, or that's completely wrong way to do such stuff (than what would be correct ember way)?
I can't say much with seeing full code. But to execute some code after the DOM is rendered you schedule a function on the the run loops afterRender queue.
Ember.run.scheduleOnce('afterRender', this, function() {
//The div should be available now.
});
But if you really need to touch the DOM I recommend you wrap your map code in a component. A component gets a didInsertElement where you can write your maps initialization code.
var component = Em.Component.extend({
setup: function() {
//Do you map init here.
}.on('didInsertElement')
});
There unfortunately isn't a really good route or controller hook that fires off after a page has already rendered. I believe the reason for this is that the developers of Ember think it is an anti-pattern to directly talk to the DOM.
That being said, I think it sometimes is quite handy for complex UI on otherwise static web pages. If you want to do some sort of jquery or use the DOM API after a route has rendered, you can do the following in your route file (as #Dainius correctly points out)
routeName.js
import Route from '#ember/routing/route';
import jQuery from 'jquery';
export default class myRouteFile extends Route {
manipulateDom = function() {
$("#myDiv").css( "color", "red" );
}
init() {
this._super(...arguments)
Ember.run.scheduleOnce('afterRender', this, this.manipulateDom)
}
}

JavaScript/jQuery - Navigation between pages

I would like to know which is the proper way to navigate between pages using ajax calls.
An example, we got this 3 html pages.
users.html (with users.js which initializes it and has its own functions)
cars.html (with cars.js which initializes it and has its own functions)
bills.html (with bills.js which initializes it and has its own functions)
What would be the proper way to go from users.html to cars.html ? I got this problem because I dont know how to "load" the cars.js after doing the ajax call in users.html.
¿If I load it with $.getScript(), how can I remove the users.js after adding the cars.js?
Thanks.
You can try to build a SPA (Single Page Application). You will have one index html file that uses the other html files as templates. For example you have a div main container whose content is replaced with users.html/cars.html/bills.html upon clicking a link.
Routing helps you get that done without refreshing the page. It also supports history.
Look up dependency injection so that you learn how you can download only the js files you depend on.
If you don't use routing and you only change the page content you lose history which is a really neat thing to have.
SPA with Routing and Templating
Routing with Sammy.js
Examples:
<body>
Cars
Bills
<div id="wrapper"></div>
<script src="jquery.js"></script>
<script src="sammy.js"></script>
<script>
(function() {
app.router = Sammy(function () {
var selector = '#wrapper';
this.get('#/cars', function() {
$.get('cars.html', function (view) {
$(selector).html(view);
});
this.get('#/bills', function() {
$.get('bills.html', function (view) {
$(selector).html(view);
});
});
});
app.router.run('#/cars'); //Link to load on app opening
}());
</script>
</body>
You can call page with $.get() like
$.get( "cars.html", function( data ) {
$(document).html(data);
alert( "Load was performed." );
});
In cars.js use all functions with $(document).ready()
but all functions must be:
$(document).on("yourevent","selector",function(){
});
while you load page cars.js will load if you import it in cars.html page
Read more about jquery.get() and jquery.on()

Using highlight.js in ember

My ember app is set up with a list of posts on the left and a view for an individual post on the right. When one of the posts on the left is clicked it's content is rendered in the view on the right.
This is the code I'm using to add syntax highlighting to a post.
App.PostView = Ember.View.extend({
didInsertElement: function() {
$('pre code').each(function(i, e) {hljs.highlightBlock(e)});
}
});
When the first post view is rendered, it has the syntax highlighting, but when I click on a different post and it's content gets loaded into the post view the syntax highlighting does not get applied. How can I make it so that the highlighting applied every time a post is rendered?
I can only guess without a more comprehensive example. Is PostView what gets created in the right panel? If so, then you need to constrain your view rendering to the stuff inside the view.
In your example, $('pre code') will target all pre code elements inside the document. Try this.$('pre code'), or whatever element/selector needs to be highlighted within the view.
This may be not the cleanest way to do the job, but you could try adding observer to the controller's model, and make required changes. But this will only work, if the model itself changes.
Like this:
postHasChanged: function() {
if (this.get('state') === 'inDOM') {
$('pre code').each(function(i, e) {
hljs.highlightBlock(e)
});
}
}.observes('controller.model')

Simple Javascript not working in my spa app

I am using the Hot Towel template by John Papa. I have a html view called nav.html, which contains the header portion of my spa. Within that, i need to display the name of the person that is logged into the system (i have a server side utility class that handles the query).
The following is from the html in the nav.html view for that-
data-bind="text: LoggedInAs"
Here is the viewmodel code (nav.js)-
define(['services/logger'], function (logger) {
var vm = {
activate: activate,
title: 'Nav View'
};
return vm;
//#region Internal Methods
function activate() {
logger.log('Nav View Activated', null, 'Nav', true);
return true;
}
//#endregion
});
My problem is that i am not sure how to do this. i tried adding nav.js to my viewmodels folder, but the javascript does not run. I thought durandal would have picked it up like the other viewmodels. The only difference between the nav.js and the other view models is that the other view models are triggered by clicking on a link (wired through route.mapnav).
What am i missing here? How do i get the javascript to run without a user clicking on a link? When the page loads, I need nav.js to run in order to populate the LoggedInAs data-bind.
Make sure that you are activating your nav view. In the example code you have given in the comment above, it would need to be this:
<header> <!--ko compose: {view: 'nav', activate: true} --><!--/ko--> </header>

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