I am looking to manipulate the $session->flash() output in my CakePHP app, Currently I have the very simple default implementation of showing flash and auth error messages:
<?php
$session->flash();
$session->flash('auth');
?>
This produces a <div> with an ID and class that has the message inside. What I would like to do is wrap/replace the generated HTML, specifically with some jQuery UI classes, but wrapping is difficult as I am unable to tell when there is actually a message going to be displayed so I end up with an empty but style error div. What I really need for wrapping to work is to check in $session->flash() returns anything, but I get 'can't use method return value in write context' when checking it with empty();
As far as I can tell the generated HTML is hard coded into the session helper! Bonus points if you can work out how to change the class on the auth message and normal flash message independently.
To check if a message is going to be flashed, put this in the layout
<?php if($session->check('Message')){ echo $this->Session->flash();} ?>
CSS attributs can be set when you set the message to be flashed
http://book.cakephp.org/view/1311/Methods#setFlash-1313
read up on setFlash() and use the other params that the method takes to define your own elements. you can then do what ever you like.
http://book.cakephp.org/view/400/setFlash
A work-around solution I have found is to set $session->flash() to a variable and then check it with empty() so I can echo out the appropriate <div> if necessary.
$flashMessage = $this->flash();
$authMessage = $this->flash('auth');
.. and then check if each one is empty. Of course I have some unnecessary html inside there but as far as the auth message goes, I think this is as flexible as I can get.
Related
I came from CakePHP and just started playing with Django framework. In CakePHP, I have the habit of printing out all the returned array using pr() straight out to the webpage. For example:
A controller spits out a $result to a View, I use pr($result) and it will print out everything right on the webpage so I know how to travel through $result from my View.
A form POST a $request to a Controller, I use pr($request) to see what is sending in before processing it in the Controller. The content of $request will be displayed immediately on the webpage right after I hit Submit the form.
I'm wondering if I could do the same thing in django instead of going to the shell and try pprint (or could I just use pprint to print out to the web???)
This is a really simple example about what I'm talking about:
app_name/views.py:
def detail(request, soc_id):
soc = get_object_or_404(Soc, pk=soc_id)
return render(request, 'socs/detail.html', {'soc': soc})
How can I just view clearly what is in "soc". In cakephp, I could just pr($soc) right there and it will be displayed right on the detail.html page.
I have tried this and it didn't work (I'm sure it's basic but i'm just new to this)
import pprint
def detail(request, soc_id):
soc = get_object_or_404(Soc, pk=soc_id)
pprint.pprint(soc)
return render(request, 'socs/detail.html', {'soc': soc})
I have spent two days doing research but I couldn't find the answer. I'm hoping one of you can help this newbie out.
The way you're trying to print will show the print in the terminal that is running your Django server. If you just need to see it quick, check there.
If you want to output the value on to the rendered page, you'll have to include it in the template using template tages. It looks like you send {'soc': soc} to your template as context. Because of this, you should be able to use it in your template. So, in your template (socs/detail.html), just add {{ soc }} somewhere and it should print out the value. The template has full access to the object, so if you wanted something specific, you can also print that instead (like {{ soc.id }}).
If you want to see everything that's in the object without specifying all of the different fields yourself, send OBJECT.__dir__. For example, for this you'd send {'soc': soc.__dir__} as your context. Keep in mind that this likely should not be used for anything but inspection on your part.
If you'd like to learn more about Django's templating, check out the syntax and more.
Can you put PHP anywhere in a file? Inside tags and quotes? For example, is something like this guaranteed to work (even though it isn't always recognized by an IDE's syntax highlighter):
<tr><tbody <?php if(!$row) echo "style='display: none;'"; ?>>
<!-- stuff that we only want to show if $row exists -->
</tbody></tr>
Or for example:
<a href="http://www.google.com/search?q=<?= echo $searchTerm; ?>"</a>
I know I can test this sort of thing on my machine, but I'm wondering if it is guaranteed/defined behavior and if there are any edge cases that don't work that I've missed.
Also, is there good reason not to do this? Is it dangerous because the next person looking at the code might miss it? Should I put a comment in? Does having to add a comment defeat the purpose of this method - succinctness?
Yes you can put the php tags anywhere in the page (html) there is no stopping you on that.
If we go under the hood, your web server sends the code to the php interpreter via a handler and merges the output with your static html file and sends the merged file as the response.
To add to my answer, developers usually go for MVC based frameworks so that the php code inside html page is restricted to only printing the variables and the business logic is performed in the controllers. I personally prefer CakePHP. Apart from that you might not want to put code that manipulates session or performs redirection between html tags else you will recieve the headers already set error as you have already printed certain html code before modifying the headers.
I am just beginning to learn PHP, so I apologize if this is a basic question. I am using what I understand to be a CodeIgniter-like MVC framework (NOT CI though - a homegrown framework)
I am trying to pass two parameters to my index controller, each of which will display a different error message. The errors are generated from two individual post functions (i.e., if user's log in is incorrect and if email already exists at sign up).
public function index($error1=NULL, $error2=NULL) {
$this->template->content = View::instance('v_index_index');
$this->template->content->error1 = $error1;
$this->template->content->error2 = $error2;
echo $this->template;
}
What I am observing is that the only error displayed is the parameter that appears in the parentheses first (e.g., at index/index/error2 the error1 message is displayed). I've already tested the logic for determining the error type, so I know that is correct and believe it must have something to do with the above.
Any help is greatly appreciated!
I am slightly confused as to what the best method is of handling redirecting and displaying error/ success messages using an MVC framework, specifically Kohana.
I have a Controller User which extends the Base controller.
Am am trying to use the action_remove() function in the base controller then redirect back to the page they were on and display a message 'User has been removed....'
I don't want to pass the error message in the GET params. Is there a standard way of doing this?
You should try to use flash session data. It is very useful when You want to show errors as well as messages. At first access flash data is removed so it can be accessed only once.
http://docs.kohanaphp.com/libraries/session#flash_session_data
Also there was some related post about this here Which is the best way to display 'flash messages' in kohana v3?
You can use Message Modules in kohana 3.x. its used to display messages.
please download this module it from here and extract . Then paste it in modules folder.
https://github.com/GoldCoastMedia/kohana-flash
Then enable it in applications/bootstrap.php like as follows.
'message' => MODPATH.'message',
There are 5 type of messages are available. success, error, warning, info, notice. You can give styles for each messages . but you need to write class in the same name of message type.
Message::error('pls login to access');
//to assign message type.its error message.
echo Message::display();
//to display it
thats it. but remember that you need to create class in the name of success, error, warning, info, notice to apply styles.
to check condition in view file , you can use it.
$sucessful_message=Message::display();
if($sucessful_message) { ?>
<div id="messagedisplay" class="padding_150">
<div class="notice_message">
<?php echo $sucessful_message; ?>
</div>
</div>
<?php } ?>
After making a javascript variable accesable into a php file the $_GET['something'] keeps saying undefined index.
Although the proper result gets displayed and being written into the xml.
If i try to initialise it my score no longer shows up for some reason.
How can i initalise this without it showing anything at al on my screen?
Regards.
If you do this with javascript:
window.location.href="index.php?scoreresult="+score
you have to access the variable in PHP using
$_GET['scoreresult']
instead of
$_GET['score']
If you make use of XSL to transform the XML, XSLT::setParameter may be interesting to you. It allows you to register (PHP)-variables for use inside a XSL-stylesheet.