In Laravel, CodeIgniter etc we do have the function to set some data in the Session for 1 request.
Does something like this exist for Zend? Should one even want to use this or is this considered a bad example?
Of course I know about the flashMessenger, but this is only intended for messages as the name says already. I googled about it alot, but cannot seem to find anything related to this topic.
So, to be clear, I want to know the following:
Is it a bad example or habit to use the session for data that is just used one request?
Does Zend Framework 2 include something like a (Laravel example) Session::flashdata($key, $value) ?
To store any data within a session in ZF2 you can (or rather should) use an instance of Zend\Session\Container.
Each 'container' accepts a 'namespace' parameter that allows you to maintain session information independently between containers.
For instance the Zend\Mvc\Controller\Plugin\FlashMessenger that you have mentioned internally uses a session container with a specific namespace, FlashMessenger.
You can create and add any data to a session container (Check out the Session Storage for more info, the default is Zend\Session\Storage\ArrayStorage)
use Zend\Session\Container;
$container = new Container('my_custom_namespace');
$container->foo = array('bar');
$container->hello = 'test';
Edit (Tabs)
The issue you will have with tabs is when you click on a new tab you will not be sending a new HTTP request (unless you use AJAX). Therefore you will need to either store the current tab in local storage or a cookie from javascript.
You can also pass the current tab via GET or POST parameters. I personally append to the HTML anchor # between requests (rather than storing it within sessions).
A basic example might be
// Append the currently selected tab in the anchor
$(document).on('shown.bs.tab', 'ul.nav-tabs > li > a', function (e) {
window.location.hash = $(e.target).attr("href").substr(1);
});
// check if there is already a value and display that tab
var hash = window.location.hash;
if (hash) $('.nav-tabs a[href="' + hash + '"]').tab('show');
So any URL with a anchor will show the matching tab. If you are posting from a form you can add it to the action attribute.
<form id="my-form" method="post" action="/the/form/target#tab-3">
See the namespace expiration section of the Zend Session "Advanced Usage" documentation. You can use a call to Zend_Session_Namespace::setExpirationHops(1) to emulate the 'flash' methods in Laravel.
EDIT: Sorry, I didn't realise that it had been removed in ZF2. Apparently, it does exist in ZF2, but they have moved it to the new container system, which seems to have replaced the old namespace system.
Related
I have an application in TYPO3 CMS. It has an extension test_extension that has a controller and an action. This action should return some JSON.
class TestRequestController extends ActionController
{
public function testAction(): void
{
echo json_encode([
'test' => 123
]);
}
}
I want to be able to request this action via Postman. How can I do that? TYPO3 version - 8.7. Thanks in advance!
Creating Links
Usually extbase-extensions are created with the help of the extension extension_builder. This extension creates by default templates and links to open list- and detail-view.
It's possible to add additional actions and to create according links.
Also the usage of the templates is not required and your way to return the result of the action without usage of a template is possible.
The logic of the links is this, I break the parts down in single lines:
tx_extension_plugin[controller]=TestRequest
tx_extension_plugin[action]=test
There are still more parameters commonly used like id or search, but it's also possible to define individual parameters.
In your case the listed parameters seem to be sufficient and the link would look like this now:
www.example.com/?id=123&tx_extension_plugin[controller]=TestRequest&tx_extension_plugin[action]=test
for the extension news this would look like this, this is with your parameter-values which are not available in news. This example shows only how the extension-related part is handled (tx_news_pi1):
www.example.com/?id=123&tx_news_pi1[controller]=TestRequest&tx_news_pi1[action]=test
id is for the page here and not a parameter for your extension, else id had to look like this tx_extension_plugin[id]=123. So all extension related parameters have the form tx_extension_plugin[parameter]=value.
While it's possible to create those links with the API, it's easier to create them with the view helpers for the fluid templates. Note that sometimes an hash is added at the end, like this example: &cHash=1234567890.
The cHash-value you can't create without viewHelper or API, so the knowledge about the parameters and the other values is not enough to create the links.
Calling the link
Most often links are directly called by the browser and visible in the URL-bar. But sometimes and in your case you might call the links by AJAX, so that the json is loaded without being directly shown to the user.
It's also possible to wrap the json in script-tags, so that it's every time loaded when the whole page is called, it's not dynamic then and without AJAX it can't adjust to some user-interaction without loading a whole page again.
AJAX responses can be realized in many ways in TYPO3, the most easy one is to define a special page-type and a special page in the pagetree for it. On this page you add the plugin of your extension to return the json. This "Ajax-page" has to be configured to have the correct header for Json and must not return anything else but the JSON, so all HTML-Output has to be disabled.
1) Is there a way to send a Tab key through to the browser to test the tab index of a page?
2) Is there a way to send a W key through to the browser while also simulating the holding down of the cmd key to close a tab in chrome?
We have tried using the keyPress() function, and have also used the following function with jQuery:
/**
* #Given /^(?:|I )manually press "([^"]*)"$/
*/
public function manuallyPress($key)
{
$script = "jQuery.event.trigger({ type : 'keypress', which : '" . $key . "' });";
$this->getSession()->evaluateScript($script);
}
Neither of them will behave as expected (they do not seem to be working at all).
Has anyone got a solution to this problem?
I've spent a fair bit of time on this issue and here are my results:
Behat does not have a pre-defined step to just send keys to any element on the page. It does have pressKey method (#Given I press the :char key in the :field field), but it works only with field as a target of the key event. You would have to write your own pressKey to send keys to a custom CSS element
Behat uses Selenium, which in its turn uses JS Syn library to symulate synthetic browser events. This library is injected into the page by Selenium.
Selenium uses Syn.trigger('keydown',...) to send characters to elements, but it does not seem to work as expected. Instead, using Syn.key(DOMElement, 'tab') would actually send the tab key to the DOMElement element. You would have to implement this as well to make your pressKey work as expected.
Behat is written using Symfony components and uses DriverFactory class to create drivers, including selenium driver. For some reason, the Selenium2Driver class is hardcoded, so there is no way to inject your own extended implementation of this class. You would have to use reflection to piggy-back on exiting protected methods of Selenium2Driver class to include Syn library and execute JS code from previous step.
There is a special case for tab key triggered in window without target element focused - this is the case when you want to test something like Skip to content accessibility link. Such link should appear on first Tab character press, but Syncan tab only from another element that can receive focus.
A working solution is to inject such element as a very first element after opening <body> tag. This element would be visually hidden, but compatible with screen readers. Then we trigger key on this element to make sure that an element that supposed to get the very first focus from tab index actually gets it. Note that injecting element and triggering key press on it does not make it focused itself.
The good news is that it is all doable and is working for me. The bad news is that, unfortunately, I cannot share the code (well, at least not this version and not just yet) :(
I have a webpage that needs to check to see if an app exists using a deep link, but it doesn't seem to work like it should. I have tried the following things.
Using a redirect in PHP (Doesn't work)
header('Location: exampleapp://param=test');
Using a redirect using JavaScript (Doesn't work)
var appurl = 'exampleapp://param=test';
var appstore = 'https://itunes.apple.com/us/app/...';
var timeout;
function preventPopup() {
clearTimeout(timeout);
timeout = null;
window.removeEventListener('pagehide', preventPopup);
}
function startApp() {
window.location = appurl;
timeout = setTimeout(function(){
if(confirm('You do not seem to have the App installed, do you want to go download it now?')){
document.location = appstore;
}
}, 100);
window.addEventListener('pagehide', preventPopup);
}
// app start is then called in the onload
Same as above but replace the the line window.location = appurl; with document.getElementById('deeplink').click(); and adding a link in the html's webpage. (Works) <a id="deeplink" href="exampleapp://param=test">Deep Link</a>
Is there a reason why you can't redirect using a header in PHP?
The PHP version doesn't work, because of the way HTTP works. The HTTP protocol doesn't specify that it should work to redirect to a different protocol from within the "Location:" header. There is nothing specific to PHP here, it's a HTTP issue.
The Javascript version doesn't work because you wanted to set the windows location. And the window cannot show the contents of "exampleapp://..." . You want the link to open like when the user clicks on it. Instead of using window.location you may use document.location.href. That should work.
Another problem:
in your code you write exampleapp:// in 1) and 2). And in 3) you write testapp:// - make sure you use the same URL in all three cases, so that you can be sure that the URL can work eventually..
The answer is to use Apples implementation called 'Smart Banners'
<meta name="apple-itunes-app" content="app-id=myAppStoreID, affiliate-data=myAffiliateData, app-argument=myURL">
You can include three comma-separated parameters in the content
attribute:
app-id: (Required.) Your app's unique identifier. To find your app ID
from the iTunes Link Maker, type the name of your app in the Search
field, and select the appropriate country and media type. In the
results, find your app and select iPhone App Link in the column on the
right. Your app ID is the nine-digit number in between id and ?mt.
affiliate-data: (Optional.) Your iTunes affiliate string, if you are
an iTunes affiliate. If you are not, find out more about becoming an
iTunes affiliate at http://www.apple.com/itunes/affiliates/.
app-argument: (Optional.) A URL that provides context to your native
app. If you include this, and the user has your app installed, she can
jump from your website to the corresponding position in your iOS app.
Typically, it is beneficial to retain navigational context because: If
the user is deep within the navigational hierarchy of your website,
you can pass the document’s entire URL, and then parse it in your app
to reroute her to the correct location in your app. If the user
performs a search on your website, you can pass the query string so
that she can seamlessly continue the search in your app without having
to retype her query. If the user is in the midst of creating content,
you can pass the session ID to download the web session state in your
app so she can nondestructively resume her work. You can generate the
app-argument of each page dynamically with a server-side script. You
can format it however you'd like, as long as it is a valid URL.
https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/PromotingAppswithAppBanners/PromotingAppswithAppBanners.html
I have a project where I need to write text from a database into an HTML5 canvas / Javascript application.
To select this content, I've specified an attribute "reference" where I can ask the database with the content id, for example: index.php?reference=exercise1.
I have used AJAX because I need to get the text content into a Javascript variable in order to write data on canvas.
My solution is working but I need to get the reference attribute value from Javascript document.URL and not PHP $_GET.
Here is the code:
var url = decodeURIComponent(document.URL);
var attr = "reference";
var attrPos = url.lastIndexOf(attr);
var referencePos = attrPos + attr.length + 1;
var reference = url.substr(referencePos,url.length);
What I'm doing seems not to be the clean way to me.
First, ?reference= should be used with PHP $_GET and not be hacked through Javascript.
Then, I have to use lastIndexOf() instead of the search() method in order to get the good value if my application is located in a folder named "reference".
Still, if I have my project in a folder named "reference" with a URI like localhost/reference/projectfolder/index.php and a reference named "projectfolder" in the database, it will load the content even if I have not asked for index.php?reference=projectfolder
From your experience, what is the best solution in my case: be able to get PHP/MySQL data to use with Javascript. Ajax seems to be the best way but as you can see it's not clean, at least my solution.
Thanks for your help.
Still, if I have my project in a folder named "reference" with a URI
like localhost/reference/projectfolder/index.php and a reference named
"projectfolder" in the database, it will load the content even if I
have not asked for index.php?reference=projectfolder
if you want the document to be empty when you are requesting just index.php, check if $_GET["reference"] is set and then return an empty body.
From your experience, what is the best solution in my case: be able to
get PHP/MySQL data to use with Javascript. Ajax seems to be the best
way but as you can see it's not clean, at least my solution.
Check this gist on how to return JSON in your body https://gist.github.com/2627924
I am working on my personal site, where I want to store my customers recent search result limited to that particular session.
I am using PHP platform and Javascripts.
Here is an example of what I am exactly looking at :
It stores your previously searched domain name for that particular session so that user can make decision by comparing those results.
Thanks.
EDIT- Well Thanks for all of your answers and suggestions.
But If you have noticed
above example
It looks like some kind of script loading a new content on the same page without refreshing it and keeping previous search content <div> as it is.
How to achieve this using javascripts or some sort of div layer ????
UPDATE START
This example uses page reload. If you want to do it without page reload, you can but you'll have to use AJAX to load new search results. But then, it's not a PHP question. I suggest looking at jquery library, as it makes it easy. Tutorials: http://docs.jquery.com/Tutorials and e.g. this one ( http://docs.jquery.com/Tutorials:Getting_Started_with_jQuery#Rate_me:_Using_Ajax ).
When loading data via AJAX, the page rendering result (in my example search.php) should return only HTML for results part, not whole HTML page. This is generally a first part of my tutorial (without session).
But I really think that AJAX in here is not really needed. Session is more reliable and allows access to your page from older / mobile browsers where not always JS works correctly.
UPDATE END
Ok then. Let's try the simple tutorial then. Sorry if too simple, but I don't know your exact level.
PHP has mechanism called sessions. In reality they are just bytes stored on server. Server knows which session is for each client by reading session cookie from client browser.
Not every page uses sessions (not every page needs it, and session uses server space, even if only temporarily), session is not enabled by default. To turn on session you use command
<?php session_start(); ?>
In most cases this is either run by PHP framework you use, or put near the top of your site. Session is definitely needed if you want to authenticate user somehow. Or in your case :)
To access session you can use superglobal $_SESSION variable (superglobal means that you can access it anywhere). It's an array, so session element will be e.g. $_SESSION['search'] etc.
As example, let's assume that your page looks like that
<html>
...
<form action="search.php" method="post">
Search: <input type="text" name="searchQuery" />
<input type="submit" value="Search" />
</form>
...
</html>
this very form will send user search to file named search.php. It can be the same file where the form resides - in simplest case when you put both your code and HTML in one file. Beginners often use this schema, although it's not advisable as result is a mess and hard to further change.
In search.php then, you'll use similar code:
<?php
if (!empty($_POST['searchQuery'])) //we have a new search
{
$result = do_search($_POST['searchQuery']);
}
?>
Then, somewhere below you'll display your search result ($result variable). do_search() function is your search mechanism, I guess you have it somewhere. You may have it not 'wrapped' in a function, then I advise to create it like that, it's much more useful.
function do_search($searchQuery)
{
...
return $result;
}
mind it, the above code doesn't use sessions yet. Let's add saving previous search results in session. The code may then look like that:
<?php
session_start(); //Starting session
//let's create session variable used to store results
if (!isset($_SESSION['searches']))
$_SESSION['searches'] = array();
if (!empty($_POST['searchQuery'])) //we have a new search
{
if (isset($_SESSION['searches'][$_POST['searchQuery']]) //User already searched on this value, delete previous result from sesion
{
unset($_SESSION['searches'][$_POST['searchQuery']]);
}
$result = do_search($_POST['searchQuery']);
//Let's add new search on the begining of session array to make iterations easier.
$result = array($_POST['searchQuery'] => $result); //convert result to same format as session table
$_SESSION['searches'] = array_merge($result, $_SESSION['searches']);
}
?>
In display you'll now not iterate on $result variable as before, but instead you will do something like
foreach ($_SESSION['searches'] as $query => $result)
{
...//display of single result
}
I haven't tested following code and it's not a full program. Parts to display result and to do actual search are not described but I guess you have them already prepared. Also, this is only one possible approach of countless possibilities. But I hope this helps :)
Possible modification - now I always perform search, even if user already searched on this term. You may want to receive the result from cache without second search. Then the code will look like
if (isset($_SESSION['searches'][$_POST['searchQuery']]) //User already searched on this value
{
$result = $_SESSION['searches'][$_POST['searchQuery']];
unset($_SESSION['searches'][$_POST['searchQuery']]);
}
else
{
$result = do_search($_POST['searchQuery']);
}
For more in-depth information about sessions and some other constructs used in my example I suggest PHP manual
http://pl.php.net/manual/en/book.session.php
and various tutorials over the network. Or you can add a comment here :)
Put this code near the beginning of your script(s):
if (!isset($_SESSION['previous_searches']) || !is_array($_SESSION['previous_searches'])) {
$_SESSION['previous_searches'] = array();
}
[edit]
This code snippet checks if if there is already an array with prevous searches and if not it will be created.
[/edit]
Then when the user hits the search page put this code in the receiving script of the search:
$_SESSION['previous_searches'][] = $_GET['what_ever_your_search_value_might_be'];
[edit]
This code snippet adds the current search value to the and of the array with previous search values
[/edit]
Now you have all previous search values in $_SESSION['previous_searches']
If your website is a web application where you never reload the page nor change the page, you can keep it JavaScript in a global store (declare at top level something like var StoredSearch = []; and use it). If not, then use $_SESSION to store this and AJAX to save/load searches from JavaScript to PHP.