I am using laravel for this project, i'm newbie at laravel then i want to add validate data if there is true then go to pdf blade, unless the data is false or wrong (i don't know what is it call so i named it True and False, but i hope you understand what i mean)
there is code in controller method search pdf
$id = $request->id;
$date = $request->date;
$pegawai = DB::table('pegawais')
->where('id', $id)
->whereDate('date', $date)
->get();
$pdf = PDF::loadview('pegawai_pdf', [
'pegawai'=>$pegawai
]);
return $pdf->stream();
and this is the output blade when i searched the data is true or exist
here
and this is the output blade when i searched but the data is false or not found data exist
here
fyi the data are fake data from seeder,
From your example, I will assume that you want to check if there is a result or not in $pegawai right? Then just count it.
if (count($pegawai) > 0) {
// show your pdf output here
} else {
// there is no data, do something here
}
to check this does not need to be a true false variable you can check this like this
if($pegawai){
$pdf = PDF::loadview('pegawai_pdf', [
'pegawai'=>$pegawai
]);
return $pdf->stream();
}else{
//show error here
}
Related
I'm building a search functionality that returns large collections which are paginated using a LengthAwarePaginator. I'm trying to cache results using a key called $searchFilter_$query_$offsetPages for a single page of returned results (10 items). It goes into the cache just fine. However, it times out when I try to check using Cache::has($key) or fetch using Cache::get($key).
The same problem occurs in the browser as well as in artisan Tinker. Strangely, when I put a random set of 10 items into the cache in Tinker and fetch them back, everything works fine. I'm using Redis as the cache driver.
Here is my controller method:
public function search($filter, $query, $layout, Request $request) {
if($layout == "list-map") {
return view("list-map")->with(['filter' => $filter, 'query' => $query, 'layout' => 'list-map']);
} else {
$offsetPages = $request->input('page', 1) - 1;
$cacheKey = $filter . "_" . $query . "_" . $offsetPages;
if(Cache::has($cacheKey)) {
\Log::info("fetching results from cache");
$data = Cache::get($cacheKey);
$totalCt = $data[0];
$results = $data[1];
} else {
$results = $this->getResults($filter, $query);
$totalCt = $results->count();
$results = $results->slice($offsetPages, $this->resultsPerPage);
\Log::info("caching results");
Cache::put($cacheKey, [$totalCt, $results], 5);
}
$results = new LengthAwarePaginator($results,
$totalCt,
$this->resultsPerPage,
$request->input('page', 1),
['path' => LengthAwarePaginator::resolveCurrentPath()]
);
return view($layout)->with(['filter' => $filter, 'query' => $query, 'layout' => $layout, 'results' => $results]);
}
}
So, the issue was that many of the models in the collection returned from my getResults() method were obtained via relationship queries. When I would dd($results) on the single page of 10 results, I could see that there was a "relations" field on each model. Inside that array were thousands of recursively related models based on the relationship I originally queried. I was unable to find any information about an option to not eager load these related models. Instead I came up with a bit of a hacky workaround to fetch the models directly:
$results = $results->slice($offsetPages, $this->resultsPerPage);
//load models directly so they don't include related models.
$temp = new \Illuminate\Database\Eloquent\Collection;
foreach($results as $result) {
if(get_class($result) == "App\Doctor") {
$result = Doctor::find($result->id);
} else if(get_class($result == "App\Organization")) {
$result = Organization::find($result->id);
}
$temp->push($result);
}
$results = $temp;
\Log::info("caching results");
Cache::put($cacheKey, [$totalCt, $results], 5);
If anyone knows the best practice in this situation, please let me know. Thanks!
Edit:
I've found a better solution instead of the above workaround. If I query my relationships like this: $taxonomy->doctors()->get() rather than $taxonomy->doctors, it does not load in the huge recusive relations.
I dont really see why your code doesn't work. The only potential problems I see are the cache keys, which could contain problematic characters, as well as the way you check for a cached value. As you are using Cache::has($key) before Cache::get($key), you could end up with a race condition where the first call returns true and the latter null because the cached value timed out just between the two calls.
I tried to address both issues in the following snippet:
public function search($filter, $query, $layout, Request $request)
{
if($layout == "list-map") {
return view("list-map")->with(['filter' => $filter, 'query' => $query, 'layout' => 'list-map']);
} else {
$offsetPages = $request->input('page', 1) - 1;
$cacheKey = md5("{$filter}_{$query}_{$offsetPages}");
$duration = 5; // todo: make this configurable or a constant
[$totalCount, $results] = Cache::remember($cacheKey, $duration, function () use ($filter, $query) {
$results = $this->getResults($filter, $query);
$totalCount = $results->count();
$filteredResults = $results->slice($offsetPages, $this->resultsPerPage);
return [$totalCount, $filteredResults];
});
$results = new LengthAwarePaginator($results,
$totalCount,
$this->resultsPerPage,
$request->input('page', 1),
['path' => LengthAwarePaginator::resolveCurrentPath()]
);
return view($layout)->with(compact('filter', 'query', 'layout', 'results'));
}
}
The inbuilt function Cache::remember() doesn't use Cache::has() under the hood. Instead, it will simply call Cache::get(). As this function will return null as default if no cache was hit, the function can easily determine if it has to execute the closure or not.
I also wrapped the $cacheKey in md5(), which gives a consistently valid key.
Looking at the following part of your code
$results = $this->getResults($filter, $query);
$totalCount = $results->count();
$filteredResults = $results->slice($offsetPages, $this->resultsPerPage);
I am quite sure the whole search could be improved (independently of the caching). Because it seems you are loading all results for a specific search into memory, even if you throw away most parts of it. There is certainly a better way to do this.
I want create a DOMPDF with laravel, and I must passing my variable to view. I've been try passing variable like below, but it still not working yet.
here my Laravel Controller
public function pdf(Request $request, $id){
$salesorder = $this->show($id)->salesorder;
$detailservice = $this->show($id)->detailservice;
$detailemployee = $this->show($id)->detailemployee;
$data = [$salesorder, $detailemployee, $detailservice];
$pdf = PDF::loadView('summary.invoice', $data);
return $pdf->download('invoice.pdf');
}
the error on my view is :
Undefined variable: salesorder
How to passing some variable from Laravel controller to DOMPDF ?
PS : dd($data) result is correctly
You have to pass the data as below
$data = [
'salesorder' => $salesorder,
'detailemployee' => $detailemployee,
'detailservice' => $detailservice
];
or try using compact
$data = compact('salesorder', 'detailemployee', 'detailservice');
You may try this following
public function pdf(Request $request, $id){
$salesorder = $this->show($id)->salesorder;
$detailservice = $this->show($id)->detailservice;
$detailemployee = $this->show($id)->detailemployee;
$pdf = PDF::loadView('summary.invoice', array('salesorder' => $salesorder,'detailemployee'=>$detailemployee,'detailservice'=>$detailservice));
return $pdf->download('invoice.pdf');
}
You can use library function to do that easily.
$pdf_text = "It will be the text you want to load";
PDF::loadHTML($pdf_text)->save('public/you-file-name.pdf');
You can change the orientation and paper size, and hide or show errors (by default, errors are shown when debug is on)
PDF::loadHTML($pdf_text)->setPaper('a4', 'landscape')->setWarnings(false)->save('public/you-file-name.pdf')
You may try the following.
$html = view('summary.invoice', ['salesorder' => $salesorder, 'detailemployee' => $detailemployee, 'detailservice' => $detailservice])->render();
$pdf = App::make('dompdf.wrapper');
$invPDF = $pdf->loadHTML($html);
return $pdf->download('invoice.pdf');
I know this is old but this may help others. you need to use array key in your view.
Controller:
$data = [
'foo' => $bar,
];
$pdf = PDF::loadView('pdf.document', $data);
return $pdf->stream('doc.pdf');
View:
<p>{{$foo}}</p>
I have the following code which sends a passowrds recovery mail:
public function recovery(Request $request)
{
$validator = Validator::make($request->only('email'), [
'email' => 'required'
]);
if($validator->fails()) {
throw new ValidationHttpException($validator->errors()->all());
}
$response = Password::sendResetLink($request->only('email'), function (Message $message) {
$message->subject(Config::get('boilerplate.recovery_email_subject'));
});
switch ($response) {
case Password::RESET_LINK_SENT:
return $this->response->noContent();
case Password::INVALID_USER:
return $this->response->errorNotFound();
}
}
Which I found out uses the following template: resources/views/auth/emails/password.php
which is an empty file.
How I can access the token from this template?
Isn't there any built-in view to use from laravel?
The function in your questions doesn't return a view.
Also, I'm unfamiliar with that path to the view that is in your question. Which version of Laravel are you using?
Anyhow, you can get the reset token from the DB, just like any other value in the DB. E.g. from a controller that is returning a view:
$user = User::find(Auth::id());
$remeber_token = $user->remember_token;
return view('to_your_view.blade.php', compact('remember_token');
And then in the view file:
{{ $remember_token }}
This will output it, no need to use echo or anything.
But, again, the function you pasted into your question is not a function that is returning a view, so I'm not sure where to tell you to put the above code.
As for your questoin about Laravel having an in-built view for 'this', in Laravel 5.3, at least, the view I assume you want will be within `resources/views/auth/passwords/'.
I have the next code:
$fixed_events = EventMain::find()
->select(["id", "title", "files"])
//->joinWith(['files'])
//->with(['files'])
->asArray()
->all();
How can i get array with "files" value, taking into account, that the "files" is modle's getter like
public function getFiles()
{
return (json_decode($this->all_files, true)) ?: [];
}
Since files is not a relation with EventMain table, I guess the easiest approach would be handle the data and convert with ArrayHelper after coming from db:
<?php
use yii\helpers\ArrayHelper;
$models = EventMain::find()->select(['id', 'title'])->all();
$array = ArrayHelper::toArray($models, [
'app\models\EventMain' => ['id', 'title','files']
]);
var_dump($array);
?>
Consider the code
return User::find($user_id)->update($data_array)?true:false;
if $data_array have some columns that are not present in User related table.
then also above statement return true.
e.g: $data_array=['not_in_the_table'=>'value'];
return User::find($user_id)->update($data_array)?true:false;
returns true. What is the condition when update returns 0 i.e. false?
If you use where('id','=',$user_id) like below instead of find($id), you will get error like Column not found for the columns that are not present in User related table. So it is best way to do this :
User::where('id','=',$user_id)->update(['column_name'=>'value']);
Instead of :
User::find($user_id)->update($data_array)?true:false;
Update method always return int. For more info Check Here
or If you want to update the the record by using Object Relation Mapping way then you can do like this :
$user = User::find($user_id) ;
$user->column_name = 'value';
if($user->save()){
//do something when user is update
}else{
// do something wehn user is not update
}
You cannot get error into false there because validation of Laravel use library.
For Laravel 4.2
public function update($user_id) {
$data_array = Input::all();
$validator = Validator::make(
$data_array,
array('name' => 'required|min:5')
);
if ($validator->passes()) {
// success as true
User::find($user_id)->update($data_array)
} else {
//failed as false
}
}
For more information about validator
I hope this help you