Bit of an odd problem which is probably because I am finding my feet with Laravel.
I have an edit page which is accessed by:
Route::get('editRow/{id}', function($id){
$section = App\Section::where('id', $id)->with('panels')->first();
return view('front.editrow',['thesection'=>$section]);
});
This form then is completed and goes to a controller with a longish method to update the table and ends with:
return view('front.editrow',['message'=>'update successful','id'=>$request->id]);
The DB is updated OK. Initially I was getting an error so I copied the route and changed it from a get to a post:
Route::post('editRow/{id}', function($id){
$section = App\Section::where('id', $id)->with('panels')->first();
return view('front.editrow',['thesection'=>$section]);
});
Now although this is exactly the same parameters etc I always get;
Undefined variable: thesection
I am baffled and would greatly appreciate this mystery being solved!
Make sure that thesection variable is always passed to the view.
When you do:
return view('front.editrow',['message'=>'update successful', 'id'=>$request->id]);
this variable is not provided. You need to either provide it in the view or check for its existence in the blade template with:
#if(isset($thesection)
// whatever you want to do with the section
#endif
Related
I know that for some it might be stupid or funny question (but I am newbie) but I need to find know how to properly use DD() method in laravel projects.
For example - I have got tasks to debug some code and functionality in my project (PHP laravel). And it always takes me for ever to find the exact file or folder or code where the problem is.
My mentor says to use DD() method to find things faster (but for learning purposes he didn't explain me a lot about how to actually use it and said to find out my self), but said that I should start with Route (we use backpack as well for our project). So after finding Route (custom.php file) which controller connects to my required route what should I do next? How do I implement dd() method (or as my mentor says dd('call here') method) to fast find what I should be looking for to solve my problem and complete my task? Where should I write this dd() and how should I write it?
Thank you for the answer in advance!
for example I have a:
public function create(): View
{
return view('xxxxxx. \[
//
//
\]);
}
and if I put dd() anywhere in the code, I get error message in my URL :(
first of all ,in Laravel we use dd() before return in order to read any variable.
in controller we often use two kinds of variables : collection(which we get its members via foreach) or singular variable (we get it via its name)for example:$var = 1; dd($var).
notice:
if you are using ajax response you will not be able to see dd() results in page ,you can see the result via network tab in your browser (if u inspect your page).
dd stands for "Dump and Die."
Laravel's dd() function can be defined as a helper function, which is used to dump a variable's contents to the browser and prevent the further script execution.
Example:
dd($users,$variable1,$var2);
You can use dd() in blade
#foreach($users as $user)
#dd($user)
OR
{{dd($user)}}
#endforeach
#dd($var1)
You can read this article, the have more example and comparison
https://shouts.dev/articles/laravel-dd-vs-dump-vs-vardump-vs-printr-with-example
As Laravel is following model-view-controller or MVC design pattern. First go to the route and check which controller is called in the URL with the related URL.
Then go to the controller. **dd**() function is basically a dump and die. you also can do this by **print** or **echo** function too.
Lets assume that I have a controller name ProductController where I have method name index.From where I need to show a list of products in a table.
// in controller
public function index()
{
$products = Products::all();
// here you think ,I need to check whether I am getting the output or
not.
dd( $products );
//Or echo $products;
return view ('product.list',compact('products'));
}
let's suppose you are getting everything but in view when you loop through the products you declare the wrong variable name or mistakenly do some spelling mistakes. and want to see the result.
In view just do the dd() method by the following way:
{{ dd($products) }}
I have a bit of a complicated issue. I could use some help.
I have a form that is being handled by the following function:
$module = request('module');
$classe = request('classe');
$horaire = request('horaire');
$date = request('date');
$students = DB::select('SELECT * FROM `etudiants` WHERE etudiants.id_classe = '.$classe);
return view('g_absence.absence',['module'=> $module, 'classe'=>$classe,'horaire'=>$horaire,'date'=>$date,'students'=>$students]);
I take the values $module, $class, $horaire, $date and $students and need to use them inside a different view: g_absence.absence. This works fine and when the view is returned I have access to said variables.
The issue is, inside the g_absence.absence view, I have another form that also needs to be handled, and because the url remains the same even tho a different view is returned, I cant make two posts for the same path.
web.php:
Route::get('/testboy', [App\Http\Controllers\g_absence::class,'index'])->name('marquer');
Route::post('/testboy',[App\Http\Controllers\g_absence::class, 'marquer']);
Route::post('/testboy',[App\Http\Controllers\g_absence::class, 'ajoutabsence']);
The first line is the one that send to the form page just a simple
return view
The second one handle the form in that view
The third one, I want it to handle the form inside the
g_absence.absence view, but they share the same path.
Excuse me if I'm being unclear, I'm a bit of a beginner in Laravel
your problem is using the same route for different methods
basically the first route gets executed every time you use the '/testboy' action that is why your second function never get's called.
you can solve this issue by changing your urls for example:
Route::post('/testboy-marquer',[App\Http\Controllers\g_absence::class, 'marquer']);
Route::post('/testboy-ajoutabsence',[App\Http\Controllers\g_absence::class, 'ajoutabsence']);
Or you can use one function that's handle both with one url by pathing additional parameter to your url depending on your function call :
Route::post('/testboy?type=marquer',[App\Http\Controllers\g_absence::class, 'ajoutabsence']);
in your function check the type :
if(request('type') == 'marquer') {
execute marquer logic here...
} else {
execute absence logic here...
}
Using method and path with two functionalities is wrong, but if you want to somehow use both routes my same method and path which I don't recommend you must let the request to pass through like a middleware in your first block of code Instead of return a view.
Recommended way is to have 2 routes with different paths or at least one route with a parameter by which you can determine what code block must be executed.
I have the following code in my view:
#if(Session::has('quality-data'))
Submited Quality Check
#endif
Now when I open this view in the frontend I get the following error:
The method that's invoked when clicked on the a tag is the following:
public function showQualityResult($qualityData) {
return $qualityData;
// return view('quality-result' , compact($qualityData));
}
Now even though I have not clicked on the a tag I am still getting an error that the parameter for the function hasn't been passed. Why is this?
Just the fact that I have the below lines of code in my view:
#if(Session::has('quality-data'))
Submited Quality Check
#endif
Makes my application not work.
I think your error is due to the usage of compact .. that does not match with the expected data required.
Indeed, your route require the data argument. Compact will create an array where the key the string in parameter, and the value associated.
Is Session::get('quality-data') return 'data' ? And $data exists ?
So, you should write:
#if(Session::has('quality-data'))
Submited Quality Check
#endif
If this works ... so, you will be able to simplify the writing.
I am trying to pass data from my controller to my view, but am getting an undefined variable error. usersID is a column in my MySQL table.
Here is the code in my controller
$arrayWithCount = DB :: table("users_has_activities")
-> where("usersID", "=", 19)
-> pluck("usersID");
$countNumber = sizeof($arrayWithCount);
return view('pages.progress', ['countNumber' => $countNumber]);
I have also tried the following return statement without any success
return view::make('pages.progress') -> with('countNumber', $countNumber);
I have also tried reversing the puck and where clauses without any success, I didn't have high hopes that reversing them would fix the problem but thought I would try it any way. Below is the relevant code in the blade file.
<?php echo $countNumber; ?>
This is the error I am currently getting
Undefined variable: countNumber
You code looks fine, if dd() doesn't stop execution of the controller, then another controller is executing. So double check your routes and controllers.
First sizeof should be sizeOf, and is simply an alias for count(). Most people would prefer count over sizeOf as sizeOf (in many languages) would indicate something related to size on disk.
Anywho, being that pluck returns a collection, you have access to count() directly from the collection.
You can probably simply do something like:
$countNumber = $arrayWithCount->count();
Sidenote: Unless there is a particular reason why you are using <?php ?>, in blade, it would be preferred to use {{ and }}.
I had all the controller code in a method I wasn't calling, so the variable was never passed to the blade file. The method was set up to be called on a button press, after fixing that everything works. Thanks Alexey for the help.
I am trying to make commenting on my site modular, so I have attempted to use view::composer to run the queries that are required to populate the comment data whenever the comment view is called, then my plan was to include the comment view in any place i needed comments, and then connect it to the appropriate comment table in my database.
The functions I have made for commenting fit each of the comment tables I've created and I've made the view composer work, the only thing is now since the function to get all the comment data is being called by the view composer when the comment view is being set up, that function no longer has access to the id that was being passed to it ( normally it is in the route like: Route::get('/{id}', 'controller#method');).
I have been searching for hours trying to figure out how to pass the variable in, but with no luck.. Maybe I'm missing some really basic detail, Idk, but I can't figure it out and haven't found anything that solves the problem, please help..
It seems like it should be so simple, I've tried doing:
$var = Route::get('/{id}', function($id){ return $id; }
Which i thought might do it, but the result was an error saying whatever the response was couldn't be converted to string.
Option 1: Access the route parameter
View::composer('comment-view', function($view){
$id = Route::current()->getParameter('id');
});
Option 2: Use the view to access the id
In your controller: return View::make('view-name')->with('commentId', $id);
View::composer('comment-view', function($view){
$id = $view->commentId;
});