Trying to locate Codeigniter function executed in the view file - php

I'm trying to find where below query is coming from. Below is executed in view file which is resource_update.php but I cannot find add_resource function from resource controller...
Is there a reason why?
$this->resources->add_resource($desc_arr, $desc_limit, $new_clients);

Check if "resources" is actually a library or a model. I don't think we ever need to call another controller from a view (which is again loaded by a controller).
i.e., How is resources loaded?
$this->load->library('resources');
or
$this->load->model('resources');
Other than lack of sleep, I see no reason why you should not find the function that way. :)
If its really bothering you - try Changing your IDE to PhpDesigner, Netbeans etc. They have a cool way of finding the function definition and code hinting.
Cheers!

Related

CI constructor is failing to load

I have written a core controller in application/core--MY_Controller.php:
class MY_ProtectedController extends CI_Controller{
public function __construct(){
echo("I luv bd1"); //This echo's
parent::__construct();
echo("I luv bd2"); //this one even couldn't reached to
$this->CI=& get_instance();
$this->CI->load->library('permission');
$this->CI->load->library('authentication');
$this->CI->load->model('commonmodel');
$this->CI->load->model('admin/usermodel');
$this->CI->load->library('imagelib');
$this->CI->load->library('facebook');
}
As you could see the first echo is echoed but the second cant get reached because parent::__construct calls CI_Controllers's __construct which fails somewhere in method resolution order(successive calls to other methods in it---I guess). If I keep debugging I think it's gonna take me the whole day excepting I have already wasted two days behind this.
FYI: I'm on EC2 VPS. installed php5.4*,apache2.4*,mysql5.5* CI:2.1.3, php.ini:display_errors=On,
CI: error_reporting(E_ALL)
[But CI's error log is not being written may be for the same reason. I have given log folder 755 perm.]
More Debug: Calling controllers without inheriting from MY_protected also results in the same.
In the matter of course: autoload,library load, view load,helper load ALL ARE FAILING.
Please Help!
Try installing a fresh copy of codeigniter, i.e. Download Codeigniter and Paste only the files you have changed or added.
For instance you most likely added new files to the controllers folder, so move your work in to the, fresh install of codeigniter's, controllers folder. do this for all you work..
I know this is not a proper solution, but at least if you do it this way you can continue working. I can not see with the info you provided, why it would not run anything after parent::__construct(); or even run that line.
Hope this helps.

PHP Functions from included files don't execute on Web Server

I am in the process of migrating a site from my personal dev server onto Windstream's business hosting server. I've already run into the issue of having developed using PHP 5.4 only to find out that my static functions won't work on WS's 5.1.4 installation. I've since fixed those issues and am not facing one that I can't seem to find any help for on the internet.
All of the static functions I was using have been rewritten as functions outside the class scope. Instead of having
class Product{
...
public static function myFunction(){}
...
}
I now have
function myFunction(){}
class Product{...}
in my included Product.php file.
However, when I try to call myFunction() from my code, nothing happens. I know the nothingness comes from WS's error handling, but the point is, the function isn't working. To verify this, I have taken the following steps:
Inserted the line echo "entered included"; immediately following the <?php in Product.php. This prints "entered included" on the index page, indicating that my include is working. I have done the same thing before the final ?> with the same results, so I don't think it's getting hung up inside the included file.
I have changed myFunction() in the included file to be simply
function myFunction(){echo "myFunction works";}
A call to myFunction() still makes nothing happen.
I have moved myFunction() to the including file (myFunction() now lives in index.php instead of Product.php; index includes Product.php). This time, myFunction() executes without issue.
To my 'hack it til it does what it should' sensibilities, this tells me that the server is having a problem with functions that are declared in files that are included; honestly, though, I have absolutely no clue what's going on, and any help would be appreciated. Their website is currently down, and they were expecting it to only be offline for a day, so I'll try pretty much anything short of sacrificing a fatted calf.
I know I should be posting more specific code, but since this is a customer's actual website, I'm trying to put as little of the actual code out here as is possible. I'm happy to append specific sections of code to this entry as they are requested for clarification.
Thanks in advance for your consideration.
#Rottingham: First, thanks for the 3v4l link. Second, my assumption about static methods in 5.4 vs 5.1.4 came from this line of php.net's page on static members and methods:
"As of PHP 5.3.0, it's possible to reference the class using a variable. The variable's value can not be a keyword (e.g. self, parent and static)."
src - http://www.php.net/manual/en/language.oop5.static.php
Since my version and the server version were on different sides of the 5.3 mark mentioned, I incorrectly assumed that this was my problem.
Third, when I get in from my day job, I'll update my code to show errors and update this post if a solution has not yet been found.
Ultimately, my problem isn't with using static methods (since I don't have them anymore) but with using any function that is declared in an included .php file.

Reloading a Class

I have a PHP daemon script running on the command line that can be connected to via telnet etc and be fed commands.
What it does with the command is based on what modules are loaded, which is currently done at the start. (psuedocode below for brevity)
$modules = LoadModules();
StartConnection();
while(true){
ListenForCommands();
}
function LoadModules(){
$modules = Array();
$dir = scandir("modules");
foreach($dir as $folder){
include("modules/".$folder."/".$folder.".php");
$modules[$folder] = new $folder;
}
}
function ListenForCommands(){
if(($command = GetData())!==false){
if(isset($modules[$command])){
$modules[$command]->run();
}
}
}
So, an example module called "bustimes" would be a class called bustimes, living in /modules/bustimes/bustimes.php
This works fine. However, I'd like to make it so modules can be updated on the fly, so as part of ListenForCommands it looks at the filemtime of the module, works out if it's changed, and if so, effectively reloads the class.
This is where the problem comes in, obviously if I include the class file again, it'll error as the class already exists.
All of the ideas I have of how to get around this problem so far are pretty sick and I'd like to avoid doing.
I have a few potential solutions so far, but I'm happy with none of them.
when a module updates, make it in a new namespace and point the reference there
I don't like this option, nor am I sure it can be done (as if I'm right, namespaces have to be defined at the top of the file? That's definitely workaroundable with a file_get_contents(), but I'd prefer to avoid it)
Parsing the PHP file then using runkit-method-redefine to redefine all of the methods.
Anything that involves that kind of parsing is a bad plan.
Instead of including the file, make a copy of the file with everything the same but str_replacing the class name to something with a rand() on the end or similar to make it unique.
Does anyone have any better ideas about how to either a) get around this problem or b) restructure the module system so this problem doesn't occur?
Any advice/ideas/constructive criticism would be extremely welcome!
You should probably load the files on demand in a forked process.
You receive a request
=> fork the main process, include the module and run it.
This will also allow you to run several commands at once, instead of having to wait for each one to run before launching the next.
Fork in php :
http://php.net/manual/en/function.pcntl-fork.php
Tricks with namespaces will fail if module uses external classes (with relative paths in namespace).
Trick with parsing is very dangerous - what if module should keep state? What if not only methods changed, but, for example, name of implemented interface? How it will affect other objects if they have link to instance of reloaded class?
I think #Kethryweryn is something you can try.

TinyMVC always shows 'default' controller

I was following documentaion till the end, tested one html template with smarty and then cut it. Then I found out that controllers do not work as expected – whatever name I create in myapp/conrollers, 'hello.php' for example, that contains class described in docs, i. e.
class Hello_Controller extends TinyMVC_Controller
{
function index()
{
echo "Hello World.";
}
function time()
{
echo "The time is now.";
}
}
I can’t show it. So the name of the file is a prefix for the controller class name, all seems to be ok here, but going to /index.php/hello returns what is in 'default.php'. I’ve even tried to change default controller to 'hello' in myapp/configs/application.php by setting $config['default_controller'], but the framework behaves like if it’s always work with the 'default.php'. There is no errors on screen or in logs (I checked twice every option in configs of my web server and interpreter), I totally don’t know what to do with that goddamn piece of crap, I can’t even write on its forum because waiting for ‘administration approval’ for several days.
I had to dig inside of the framework to find an answer. And it is when it checks for a controller file it uses file_exists() which do not respect include path. Googling ‘TinyMVC+file_exists’ gave me link to that topic, where is written that they had fixed it in SVN version.

CodeIgniter: Can't Get My New Controller/View To Show

I am learning how to use codeIgniter as my php framework. I am reading through the documentation and watching the intro video and just generally following along with the first tutorial, but it's not working for me.
I have created a controller called "test.php" and a view called "test_view". The controller for this class is exactly like "welcome.php" and the view file just has some static html. However, when I go to index.php/test I get a 404 error.
I have also tried manipulating the original welcome files so that instead of calling a view it just echos "testing", yet I still see the original welcome message! I've tried clearing my browsing cash and refreshing, but to no avail.
Any suggestions? Thanks.
Edit: Here's the code for controllers/test.php
<?php
class Test extends Controller {
//Just trying to get it to echo test
public function index()
{
echo "test";
//$this->load->view('test_view');
}
}
?>
Try looking at this page in the documentation - this might solve your problem.
This basically means you should try typing index.php?/test/ instead (notice the question-mark).
First of all, check the above link. Might be useful.
If not, then...
Try changing the default controller in the config file ('routes.php') to something else (probably, to 'test'), then try loading index.php. Just to test whether the whole system works (or not).
Check whether mod_rewrite is loaded (in your server .conf-file, if you're using Apache).
Try using the latest build of the framework. AFAIK, the name of the controller class for now is "CI_Controller".
Finally, try removing the word 'public' before the declaration of the function. AFAIR, CI enable you to make private functions in controllers just by using prefix (which is set in the config file) at the beginning of the name of the function (thus making all the other functions public).
But most certainly the problem is with the mod_rewrite. If not, try debugging with die('Page found'); instead of echo - this will allow you to track possible redirects on the page.

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