How to determine if first segment exists or not at CodeIgniter? - codeigniter

I think I'll become a bald because of pulling my hairs...
According to CodeIgniter tutorial and also my previous experience, I can easily determine if 2nd, 3rd or 4th segments exist or what are their values.
if($this->uri->segment(3)) {
//do something
}
or
if($this->uri->segment(3)=="foo") {
//do something
}
Everything is okay for ALL other segments except the FIRST SEGMENT!
I can not use any conditional statements for FIRST SEGMENT!
if($this->uri->segment(1)) does not work. Because it always returns true. But I want to check if first segment exists or NOT. When I browse to my site, because of removing index.php, it looks like www.domain.com . All other controllers goes like domain.com/firstcontroller, domain.com/secondcontroller
BUT I need to create a condition for the WEB ROOT.
I tried __construct() function but it didn't work neither.
The thing I want to do is:
I will show some HTML if current page is NOT webroot (even without 1st segment) or it's not my main controller.
Can you help please?
EDIT:
Errr... I'm sorry. I've figured out the problem. It was about using correct operator. I was supposed to use XOR instead of OR. So there is no problem with determining $this->uri->segment(1) ... It's just same as other segments...

Have you tried type casting before running the function?
E.g
$seg = (int) 1; $this->uri->segment($seg);
Or you could try and grab the data from
$seg_array = $this->uri->segment_array();
and then just examine the returned array.

Not sure why you need this for and from where you would call it? The first segment is always the name of the controller executed, the second segment is the name of the function from that controller that is executed. If you haven't change the default routing.
$this->uri->uri_string() will return you the controller/method.You might also want to check $this->uri->ruri_string() and find more info here. Hope this helps you.

if ($this->router->class != $this->router->default_controller) {
// Run stuff here
}
Try this yourself: print_r($this->router)
You can be extra sure through:
if ($this->router->class != $this->router->default_controller or $this->router->directory or $this->router->method != 'index') {
// Run stuff here
}

I was supposed to use XOR instead of OR inside my conditional function. So there is no problem with determining $this->uri->segment(1) ... It's just same as other segments...

Related

Laravel 5.4 : Dynamic validation rule

I kind of struggle to find the answer to my question, and my test don't prove to be useful. So maybe someone here would have hit the same issue that I'm facing.
I have inputs with the following kind of patterned name projects-0-1, project-0-2, project-1-0 and so on... These are file inputs so people can upload a document/an image.
So basically, I've been trying to get a validation message that would (ideally) be something like that:
$validator->getMessageBag()->add('project-*-*', 'File is empty!');
OR
$validator->getMessageBag()->add('project-*', 'File is empty!');
I tried a couple of things already and nothing seems to work.
The reason I get to add a custom message is that file is simply not validated if it comes empty to the $request object. So I first need to check if the $request->hasFile and in case it doesn't I want to add the error message.
Things to consider:
inputs can be dynamically added to the form, so I don't know the exact number of file inputs I need to validate beforehand.
even if this should not impact the code and validation, it's worth noticing that everything happens through ajax as I embed the form on another website. Therefore I created endpoints etc...
Any hint ?
Right, coming back here in case someone faces that issue too. I found a "hacky" way to get there and it does the trick for me.
As each input file is dynamically added to the DOM, I add an extra hidden input that holds the name of the file input as a value.
Then in my controller I do smth like that:
public function createValuesKeyArray ($preset)
{
$regexPattern = '/^'. $preset .'-[0-9]*$/';
$customPresets = preg_grep($regexPattern, array_keys(Input::all()));
$keys = [];
foreach ($customPresets as $customPreset) {
array_push($keys, $customPreset);
}
return $keys;
}
// This allows me to get all hidden input names in an array in order to get its value from the $request
$hiddenInputs = $this->createValuesKeyArray('hidden-project-name');
Once I get this array, I can do stuff like that and dinamycally add my set of rules for the input files present in the DOM:
foreach($hiddenInputs as $hiddenInput){
$globalRules[$request[$hiddenInput]] = 'required';
}
Not sure if this the right way to get there, but it does the job for me and I don't find that code horrible. I'll stick with it until I find a better way.

prevent duplicate value using ajax in sugar crm

i have create module using module builder , now i am having a field called as book Name
now if i give same book name 2 time t is accepting .
i don't want to use and plug in for checking duplicate value because i want to learn the customization through code .
so i can call ajax and check in data base weather the same book name is exist in db or not but i don't know how controller works in sugar crm . and how to call ajax in sugar crm .
can any one guide me , your help is much appreciated .
If you really want to accomplish this using ajax then I'd recommend an entryPoint as the way to go. This customization will require a couple of simple things. First you'll write a little bit of javascript to perform the actual ajax call. That ajax call will post to the entryPoint you write. The entryPoint will run the query for you and return a response to you in the edit view. So lets get started by writing the entryPoint first.
First, open the file custom/include/MVC/Controller/entry_point_registry.php. If the folder structure and file do not exist yet, go ahead and create them.
Add the following code to the entry_point_registry.php file:
$entry_point_registry['test'] = array('file' => 'custom/test.php', 'auth' => true);
Some quick explanation about that line:
The index value of test can be changed to whatever you like. Perhaps 'unique_book_value' makes more sense in your case. You'll see how this value is used in a minute.
The file value in the array points to where you're gonna put your actual code. You should also give this a more meaningful name. It does NOT need to match the array key mentioned above.
The 'auth' => true part determines whether or not the browser needs to have an active logged in session with SugarCRM or not. In this case (and almost all) I'd suggest keeping this to true.
Now lets look at the code that will go in custom/test.php (or in your case unique_book_name.php):
/* disclaimer: we are not gonna get all crazy with using PDO and parameterized queries at this point,
but be aware that there is potential for sql injection here. The auth => true will help
mitigate that somewhat, but you're never supposed to trust any input, blah blah blah. */
global $db; // load the global sugarcrm database object for your query
$book_name = urldecode($_REQUEST['book_name']); // we are gonna start with $_REQUEST to make this easier to test, but consider changing to $_POST when confirmed working as expected
$book_id = urldecode($_REQUEST['book_id']); // need to make sure this still works as expected when editing an existing record
// the $db->quote is an alias for mysql_real_escape_string() It still does not protect you completely from sql injection, but is better than not using it...
$sql = "SELECT id FROM book_module_table_name WHERE deleted = 0 AND name = '".$db->quote($book_name)."' AND id <> '".$db->quote($book_id)."'";
$res = $db->query($sql);
if ($db->getRowCount($res) > 0) {
echo 'exists';
}
else {
echo 'unique';
}
A note about using direct database queries: There are api methods you can use to accomplish this. (hint: $bean->retrieve_by_string_fields() - check out this article if you wanna go that route: http://developer.sugarcrm.com/2012/03/23/howto-using-the-bean-instead-of-sql-all-the-time/) However, I find the api to be rather slow and ajax should be as fast as possible. If a client asked me to provide this functionality there's a 99% chance I'd use a direct db query. Might use PDO and parameterized query if I'm feeling fancy that day, but it's your call.
Using the above code you should be able to navigate to https://crm.yourdomain.com/index.php?entryPoint=test and run the code we just wrote.
However at this point all you're gonna get is a white screen. If you modify the url to include the entryPoint part and it loads your home page or does NOT go to a white screen there are 3 potential causes:
You put something different for $entry_point_registry['test']. If so change the url to read index.php?entryPoint=whatever_you_put_as_the_array_key
You have sugar in a folder or something on your domain so instead of crm.yourdomain.com it is located somewhere ugly and stupid like yourdomain.com/sugarcrm/ if this is the case just make sure that your are modifying the url such that the actual domain portion is preserved. Okay I'll spell it out for you... https://yourdomain.com/sugarcrm/index.php?entryPoint=test
This is more rare, but for some reason that I cannot figure out apache sometimes needs to be reloaded when adding a new entrypoint. If you have shell access a quick /etc/init.d/apache2 reload should do the trick. If you don't have shell access you may need to open a ticket with your hosting provider (or get a fricking vps where you have some control!!!, c'mon man!)
Still not working? Did you notice the "s" in https? Try http instead and buy a fricking $9 ssl cert, geez man!
Okay moving on. Let's test out the entryPoint a bit. Add a record to the book module. Let's add the book "War of Art" (no, not Art of War, although you should give that a read too).
Now in the url add this: index.php?entryPoint=test&book_name=Art%20of%20War
Oh gawd that url encoding is hideous right! Don't worry about it.
You should hopefully get an ugly white screen with the text "exists". If you do let's make sure it also works the other way. Add a 2 to the book name in the url and hopefully it will now say "unique".
Quick note: if you're using Sugar you're probably also using mysql which is case insensitive when searching on strings. If you really need case sensitivity check out this SO article:
How can I make SQL case sensitive string comparison on MySQL?
Okay so now we have our entryPoint working and we can move on to the fun part of making everything all ajaxical. There are a couple ways to go about this, but rather than going the most basic route I'm gonna show you what I've found to be the most reliable route.
You probably will need to create the following file: custom/modules/CUSTOM_BOOK_MODULE/views/view.edit.php (I hope by now I don't need to point out changing that path to use your module name...
Assuming this file did not exist and we are starting from scratch here is what it will need to look like:
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
class CUSTOM_BOOK_MODULEViewEdit extends ViewEdit
{
public function display()
{
// make sure it works in the subpanel too
$this->useForSubpanel = true;
// make the name value available in the tpl file
$this->ss->assign('name_value', $this->bean->name);
// load the parsed contents of the tpl into this var
$name_input_code = $this->ss->fetch('custom/modules/CUSTOM_BOOK_MODULE/tpls/unique_book_checker.tpl.js');
// pass the parsed contents down into the editviewdefs
$this->ss->assign('custom_name_code', $name_input_code);
// definitely need to call the parent method
parent::display();
}
}
Things are looking good. Now we gotta write the code in this file: custom/modules/CUSTOM_BOOK_MODULE/tpls/unique_book_checker.tpl.js
First a couple of assumptions:
We're going to expect that this is Sugar 6.5+ and jquery is already available. If you're on an earlier version you'll need to manually include jquery.
We're going to put the event listener on the name field. If the book name value that you want to check is actually a different field name then simply adjust that in the javascript below.
Here is the code for custom/modules/CUSTOM_BOOK_MODULE/unique_book_checker.tpl.js:
<input type="text" name="name" id="name" maxlength="255" value="{$name_value}" />
<span id="book_unique_result"></span>
{literal}
<script type="text/javascript">
$(document).ready(function() {
$('#name').blur(function(){
$('#book_unique_result').html('<strong> checking name...</strong>');
$.post('index.php?entryPoint=test', {book_name: $('#name').val(), book_id: $('[name="record"]').val()}, function(data){
if (data == 'exists') {
removeFromValidate('EditView', 'name');
addToValidate('EditView', 'name', 'float', true, 'Book Name Must be Unique.');
$('#book_unique_result').html('<strong style="color:red;"> ✗</strong>');
}
else if (data == 'unique') {
removeFromValidate('EditView', 'name');
addToValidate('EditView', 'name', '', true, 'Name Required');
$('#book_unique_result').html('<strong style="color:green;"> ✓</strong>');
}
else {
// uh oh! maybe you have php display errors on?
}
});
});
});
</script>
{/literal}
Another Note: When the code detects that the name already exists we get a little hacky and use Sugar's built in validation stuff to prevent the record from saving. Basically, we are saying that if the name already exists then the name value MUST be a float. I figured this is pretty unlikely and will do the trick. However if you have a book named 3.14 or something like that and you try to create a duplicate this code will NOT prevent the save. It will tell you that a duplicate was found, but it will not prevent the save.
Phew! Okay last two steps and they are easy.
First, open the file: custom/modules/CUSTOM_BOOK_MODULE/metadata/editviewdefs.php.
Next, find the section that provides the metadata for the name field and add this customCode attribute so that it looks like this:
array (
'name' => 'name',
'customCode' => '{$custom_name_code}',
),
Finally, you'll need to do a quick repair and rebuild for the metadata changes to take effect. Go to Admin > Repair > Quick Repair & Rebuild.
Boom! You should be good to go!

CodeIgniter model not right with where condition

I have this code in my model:
$this->db->where('transaction_income_barcode.barcode_number', $barcode_number);
The value of $barcode_number is 000500007301000005304778
So I compare using PHP it is the correct value:
if($_POST['barcode_number'] == '000500007301000005304778')
but somehow via the model it is not working correctly.
Any ideas?
Forget all the chatter of var_dump() or complicated last_query(), simply follow the CI process of profiling your code and add:
$this->output->enable_profiler(TRUE);
In your controller after the active call. This will show you your FULL SQL QUERY (actually, all queries on that page).
Cleanest way to go about it, my suspicion is that your value is being converted to a int and it STRIPS out the leading 000's
Take care of that by doing a cast:
$this->db->where('transaction_income_barcode.barcode_number', (string)$barcode_number );
As a side note:
Don't use $_POST['barcode_number'] instead be safe with CI's $this->input->post('barcode_number');

code igniter routing

I am trying to work out the code igniter routing
I have a url that will look like
http://example.com/register
I want that to hit
http://example.com/account/register/normal
I also have
http://example.com/invite/something_random_here
which I want to hit
http://example.com/account/register/invite/something_random_here
I also have
http://example.com/register/something_random_here
which I want to hit
http://example.com/account/register/subscribed/something_random_here
How do I setup these routes?
Pretty much Straight out of the User Guide
$route['register'] = "account/register/normal";
$route['invite/(:any)'] = "account/register/invite/$1";
Basically anything after invite/ will get tacked onto the end of account/register/invite. I believe it only works for one segment, if you want multiple segment support you'll have to use a regular expression:
$route['invite/(.+)'] = "account/register/invite/$1";
Another usefull one (because I believe (:any) only works for characters) would be:
$route['invite/([a-zA-Z0-9_-]+)'] = "account/register/invite/$1";
This will let all alpha-numeric values (single segment) with _ or - go through, great for GUIDs :)
I believe for your first URL, you would use the following route:
$route['register'] = "account/register/normal";
Your second URL, would make use of the following route:
$route['invite/(:any)'] = "account/register/invite/$1";
Both of these routes would need to be placed in your "config/routes.php" file.
Hope this helps?

Deciding whether or not a run a function, which way is better?

I have some data being loaded from a server, but there's no guarantee that I'll have it all when the UI starts to display it to the user. Every frame there's a tick function. When new data is received a flag is set so I know that it's time to load it into my data structure. Which of the following ways is a more sane way to decide when to actually run the function?
AddNewStuffToList()
{
// Clear the list and reload it with new data
}
Foo_Tick()
{
if (updated)
AddNewStuffToList();
// Rest of tick function
}
Versus:
AddNewStuffToList()
{
if (updated)
{
// Clear the list and reload it with new data
}
}
Foo_Tick()
{
AddNewStuffToList();
// Rest of tick function
}
I've omitted a lot of the irrelevant details for the sake of the example.
IMHO first one. This version separates:
when to update data (Foo_Tick)
FROM
how to loading data (AddNewStuffToList()).
2nd option just mixing all things together.
You should probably not run the function until it is updated. That way, the function can be used for more purposes.
Let's say you have 2 calls that both are going to come and put in data to the list. With the first set up, checking the variable inside of the function, you could only check if one call has came in. Instead, if you check it in the function that calls the data, you can have as many input sources as you want, without having to change the beginning function.
Functions should be really precise on what they are doing, and should avoid needing information created by another function unless it is passed in.
In the first version the simple variable check "updated" will be checked each time and only if true would AddNewStuffToList be called.
With the second version you will call AddNewStuffToList followed by a check to "updated" every time.
In this particular instance, given that function calls are generally expensive compared to a variable check I personally prefer the first version.
However, there are situations when a check inside the function would be better.
e.g.
doSomething(Pointer *p){
p->doSomethingElse();
}
FooTick(){
Pointer *p = new Pointer();
// do stuff ...
// lets do something
if (p){
doSomething(p);
}
}
This is clumbsy because every time you call doSomething you should really check you're
not passing in a bad pointer. What if this is forgotten? we could get an access violation.
In this case, the following is better as you're only writing the check in one place and
there is no extra overhead added because we always want to ensure we're not passing in a bad pointer.
doSomething(Pointer *p){
if (p){
p->doSomethingElse();
}
}
So in general, it depends on the situation. There are no right and wrong answers, just pros and cons here.

Resources