If I want to construct this url: /categories/5/update/?hidden=1 how could I pass both {id} param and hidden param (as GET) ?
My route is:
Route::get('categories/{id}/update', 'CategoryController#update');
I don't want to make a form and put it as POST because I have a number of buttons which simply hides/shows/removes a category and dont want to make a lot of forms for simple actions, although it has nothing to do with the question
I'm just a little bit confused, because it seems like action('CategoryController#update', [$id, 'hidden' => 1]) constructs the right URL but I got no idea how it's distinguished that the first one ($id) must be in URL and the second is a GET param
You may also try this to generate the URL:
$action = action('CategoryController#update', [id => $id]) . '?hidden=1';
Also, query string could be passed with any route even without mentioning about that in Route declaration.
Related
URL: http://localhost/?v=
Code:
Route::get('/', ['as' => 'home', function()
{
dd(Request::has('v'));
}]);
Output: false
What is going on? Is this a bug or am I doing something wrong?
Request::has() will check if the item is actually set. An empty string doesn't count here.
What you are looking for instead is: Request::exists()!
Route::get('/', ['as' => 'home', function()
{
dd(Request::exists('v'));
}]);
tl;dr
Upgrade to Laravel 5.5 or higher. They changed this so now it works as you originally expected.
Explanation
In the Laravel 5.5 upgrade guide, we read the following:
The has Method
The $request->has() method will now return true even if the input value is an empty string or null. A new $request->filled() method has been added that provides the previous behaviour of the has() method.
The $request->exists() method still works, it is just an alias for $request->has().
Examining the source code
In Laravel 5.4:
$request->exists(): Determine if the request contains a given input item key.
$request->has(): Determine if the request contains a non-empty value for an input item.
In Laravel 5.5:
$request->exists(): Alias for $request->has
$request->has(): Determine if the request contains a given input item key.
$request->filled(): Determine if the request contains a non-empty value for an input item.
If you click to the commands above, you can check out the source code and see that they literally just renamed exists to has, has to filled, then aliased exists to has.
Use Request::filled() because unlike Request::has(), it also checks if the parameter is not empty.
You might wanna check this out. since the $request->has() method and it property can offer access to request origin.
It's ok to use $request->has('username') This will check if <input type="text" name="username" /> username attributes actually exist or the params/.query string actually have that key on the request global.
As to me it's not a bug, but feature :) In your example v is provided, but it's empty.
In framework code you'll find this:
if ($this->isEmptyString($value)) return false;
So, if empty string is provided has() method will return false. It makes sense to me, in most cases I want this behavior.
Let's say my controller function is expecting 2 parameters: page_name, and user_name
The URL would be in the format http://mysite.com/controller_name/function_name/page_name/user_name
Assuming that sometimes I can have a blank user_name, and other times I can have blank page_name, can I pass a blank page_name by loading this URL?
http://mysite.com/controller_name/function_name//user_name
If the controller function is:
function function_name($page_name="default", $user_name=null)
...
Would the $page_name value be "default" for the 2nd URL stated above?
You can't. Server will simply ignore the extra slash.
Since both parameters are optional, you should use request parameters.
http://mysite.com/controller_name/function_name?page_name=p1&user_name=u1
And in your controller, use $this->input->get('page_name') and $this->input->get('user_name') to get the value and check if the values are empty.
I know this is an old question but the solution I came up with is simple. It goes something like this:
$this->input->get('limit') ? $this->input->get('limit') : 20;
I am trying to create a router which will take a dynamic value and forward it to the actual route. In normal case it would be like
$route['login'] = 'auth/login';
It is possible to catch a parameter before the login in the above parameter and pass it to as the first parameter to the actual route ? like
$route['^(.+)/login$'] = "$1/user/login";
Check out the documentation[docs]. There is a very easy way to do this.
$route['(:any)/login'] = '$1/auth/login';
Starx answer is correct but I wouldn't do that, as your first param will be your controller, and if you don't know what's in the dynamic value that's impossible to manage.
I would do :
$route['(:any)/login'] = 'user/login/$1';
This way, 'anything/login' would be redirected to your User controller, to the Login function with the parameter 'anything'.
Let's say I have a method at Controller named
book($chapter,$page);
where $chapter and $page must be integer. To access the method, the URI will look like
book/chapter/page
For example,
book/1/1
If user try to access the URI without passing all parameter, or wrong parameter, like
book/1/
or
book/abcxyz/1
I can do some if else statements to handle, like
if(!empty($page)){
//process
}else{
//redirect
}
My question is, is there any best practice to handle those invalid parameters passed by user? My ultimate goal is to redirect to the main page whenever there is an invalid parameter? How can I achieve this?
Using the CodeIgniter routing in config/routes.php is pretty useful here, something like this:
$route['book/(:num)/(:num)'] = "book/$1/$2";
$route['book/(:any)'] = "error";
$route['book'] = "error";
Should catch everything. You can have pretty much any regular expressions in the routes, so can validate that the parameters are numeric, start with a lowercase letter, etc..
The best logic here seems to be adding the default values:
book($chapter = 1, $page = 1);
and then checking if they are numeric
So it automatically opens the 1st page of the 1st chapter if there are parameter missing or non-numeric.
Please excuse me if this is an incredibly stupid question, as I'm new to CodeIgniter.
I have a controller for my verification system called Verify. I'd like to be able to use it something like site.com/verify/123/abcd, but I only want to use the index function, so both URL segments need to go to it.
I'm sure this can be done with URL routing somehow, but I can't figure out how to pass both URL segments into Verify's index function..
Something like this in routes.php should do the job:
$route['verify/(:any)/(:any)'] = "verify/index/$1/$2";
I'm pretty sure you can just pass any controller method in CodeIgniter multiple arguments without modifying routes or .htaccess unless I misunderstood the problem.
function index($arg_one, $arg_two)
{
}
$arg_one representing the 123 and $arg_two representing the abcd in your example URI.
You will either need to edit the routes or write an htaccess rule, however i didn't understand why you want to limit to just the index function.
If you didnt wanna use routes for some reason, then you could add this function to the controller in question.
public function _remap($method_in, $params = array()) {
$method = 'process_'.$method_in;
if (method_exists($this, $method)) {
return call_user_func_array(array($this, $method), $params);
}
array_unshift($params, $method_in);
$this->index($params);
}
Basically it does the same as default behavior in CI, except instead of sending a 404 on 'cant find method', it sends unfound method calls to the index.
You would need to alter your index function to take an array as the first argument.
OR if you know that you only ever want 2 arguments, you could change the last 2 lines to
$this->index($method_in, $params[0]);
Of course both solutions fail in someone uses an argument which is the same as a method in your controller.