Your controller is not complete, have a look at the docs for the syntax of a controller. Also, the if (r::ajax) statement has to disappear from the if statememt. But you have to define the $projects and $morevariables.
Before we had content representations, we had to use the standard PHP template to handle both the standard HTML request and the requests coming from an AJAX call, therefore the need for the if statement with the if(r::ajax() condition.
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Ajax is a set of Web development techniques using many web technologies on the client side to create asynchronous Web applications. With Ajax, web applications can send and retrieve data from a server asynchronously without interfering with the display and behavior of the existing page.
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Unfortunately, different browsers implement the Ajax API differently. Typically this meant that developers would have to account for all the different browsers to ensure that Ajax would work universally. Fortunately, jQuery provides Ajax support that abstracts away painful browser differences. It offers both a full-featured $.ajax() method, and simple convenience methods such as $.get(), $.getScript(), $.getJSON(), $.post(), and $().load().
Every AJAX request goes through the admin-ajax.php file in the wp-admin folder. That this file is named admin-ajax might be a bit confusing. I quite agree, but this is just how the development process turned out. So, we should use admin-ajax.php for back-end and user-facing AJAX.
Each request needs to supply at least one piece of data (using the GET or POST method) called action. Based on this action, the code in admin-ajax.php creates two hooks, wp_ajax_my_action and wp_ajax_nopriv_my_action, where my_action is the value of the GET or POST variable action.
This concludes our quick tutorial on using AJAX in WordPress. A lot of functionality could still be added, but the main point of this article was to show how to properly add AJAX functionality itself to plugins. To recap, the four steps involved are:
If I wanted to change this into an extra, which would be the best approach?
I just need to know the best way to use javascript to add,push and delete data from the database.
I would like to try and develop a commenting extra later on.
My programming skills are in javascript and css.
I do need to learn php, but I will need to learn as I go along.
I did learn visual basic a long time ago.
I also have posted an issue with this tutorial
-modx/tutorials/using-custom-database-tables#
This is what I posted:
I get an error when trying to add namespace , Modx is running in Xampp.
The path in modx to xpdo is supposed to be core/vendor/xpdo/src/xPDO/ ,but my path is core/vendor/xpdo/xpdo/src/xPDO/
xpdo is 2 directories?
I will use the ExtraBuilder for now.
But is there a error in the tutorial?
I will have a look at an extra that uses endpoints.
Is this the only way ajax works, through endpoints?
Thanks for the help.
As an example, I made a super simple and silly function called t4a_ajax_call().
The only thing it does is dump the $_POST values, just to have some sorts of output, and to get an idea what kind of data is being relayed.
It is absolutely critical that you enter the correct function name at the action field, which is the name of the PHP function we defined and registered as the function to handle our Ajax call. In this example t4a_ajax_call.
Wow! This is the first wordpress ajax tutorial I have found that works and is clear and easy to follow! I would love something on using ajax to update the database with some userdata (either usermeta or custom field) .
Hello, I need tutorials for building frontend forms with Ajax. What I need to know is how to fill out select options from a model. Fill out input text fields or labels after selecting an option (a model object). Make some inputs in a table similar to the TODO Ajax app, which will be later assigned to the current model.
Now, if I load the ajax generated page normally (right click open in new tab), then the link loads the next page using Ajax just fine, but if I load the page using Ajax it just works like a regular link, no Ajax
There is a flaw in how Yii handles dealing with more complex ajax response that require javascript to make them work. You can use the post process option in renderPartial to get the javascript out with a rendered view.
Looking in firebug at the response on when process output is called vs my initial page load the link setup is in a script element on the ajax call vs the ready function for the initial load so the code somewhere knows something is up.
There is absolutely no technical merit to the ajaxLink() method. It does not separate logic, there is no less coding, it bloats the output source code, it adversely affects performance and relies on the client machine for processing and most importantly, is inherently buggy.
Ajax has become a fundamental technique for creating dynamic, usable web applications. In this tutorial, you'll learn about the Dojo Toolkit's Ajax communication methods, including basic XHR concepts, how to customize your Ajax calls, handling multiple types of data, and strategies for cross-domain JSON gathering (JSONP).
Welcome to this ASP.NET Ajax Tutorial, currently consisting of 7 articles covering all the most important AJAX.NET concepts. This tutorial is primarily for new users of this great technology, and we recommend you to go through all the chapters, to get the most out of it as possible. While each chapter can be used without reading the previous chapters, some of them may reference things done in earlier chapters.
Have a look at the Table of contents to the right, where all the chapters are listed. This tutorial is never done - we will keep adding new stuff to it, so check back regularly. We hope this tutorial helps you to get started with ASP.NET Ajax.
This tutorial is the final part of a two part series on Ajax based development with JSF and Facelets. The first part of this tutorial can be found here: Integrating Ajax, Facelets and JSF 2.0
In the previous tutorial we create the FacePainter class which is used by the Facelets framework to dynamically populate the content area of our web based application. By updating the mainContent property of the FacePainter on every Ajax based request, the central content in our web application is constantly updated, all of which happens using asynchronous, Ajax based request-response cycles. The page ends up transitioning from one screen to the next with the central content being updated, creating an Ajax based JSF experience that is diagramed in the image below:
Notice that the render attribute in f:ajax tag is set to both content and form. Setting the render attribute to content forces only the DIV element with the id of content to be refreshed when the commandLink is clicked. The form value is only in there because of a bug in the Mojarra release of JSF 2.2 which stops the page from loading properly. Hopefully that will be addressed in an upcoming release, but for now, the form value needs to be included in the render attribute. If there are any other parts of the page you would like refreshed through an Ajax based cycle, they can be listed here additionally as well.
Thank you for this tutorial. By going over it again and again I have managed to build the foundation of a basic app, which I'm very happy about!
In the app I'm building I don't need to have user login, but I would like to have information from the user kept while the user is accessing the app. In the app the user types in some numbers and then navigates to other pages to view graphs based on those numbers.
I've used Flask-Session for server side user-tracking, with sqlalchemy as the chosen database. So the database of my app is a bit simpler compared to this microblog.
in order to 'span id' the html tags to add the client side action feature, I've generated an id unique to the user with id(session) - object of Flask-Session, it's a 13-digit number. This has worked on my testing, but I'm wondering if you think this approach would work if the app went live. Do you think it would work if multiple users were accessing the app at the same time? Are there other approaches to consider?
Thank you for your response.
I'm trying to use an ajax call to display an image. I understand that the final returned object from the server(routes.py) to the client (html page) is a string. I have suceeded in displaying images before by sending a bytesio file. I want to use bytesio to avoid saving the images in files, to avoid clutter.
Can the final returned object be in bytesio format or can it only be string. One workaround I thought about was creating a javascript function to convert the string to bytearray on the html page, I read that TextEncoder() can do this. And then inserting the bytearray into the src in the img tag. But then I'm also not sure about how to span the src="" part.
doesn't seem to work. Nor does
This tutorial shows you how to develop an AJAX Dialog in JIRA. To do this, you create an add watchers plugin, a dialog that allows a user to specify watchers on the view issue page in JIRA or add other users to as watchers on the view issue page. As with all plugins, your plugin will consist of the following components: 0852c4b9a8
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