basically I want to update this table in one go or bulk update.
I wanted to update the "image_id" field on this table.
This is my code in the Controller
public function storebulk(Request $request,$id)
{
$ids= ['8','9','10']; //sent from the front-end
$barcode = Barcode::where('id', $ids)->update(['image_id'=>$id]);
return 'Done';
}
but for some reason it doesn't work. if anyone can point out what I missed here it will be great.
thanks
You should use whereIn:
public function storebulk(Request $request, $id)
{
$ids= ['8','9','10']; //sent from the front-end
$barcode = Barcode::whereIn('id', $ids)->update(['image_id'=>$id]);
return 'Done';
}
In Laravel, If you want to update multiple rows or get multiple rows of same type always use whereIn.
The Docs Define whereIn as -
The whereIn method verifies that a given column's value is contained within the given array
public function storebulk(Request $request,$id)
{
$ids= ['8','9','10']; //sent from the front-end
$barcode = Barcode::whereIn('id', $ids)->update(['image_id'=>$id]);
return 'Done';
}
Link to docs
Related
In my app i have a Posts and a Reacts table both are connected with relationship.
In App user can react to a post(like or dislike) and for retrieve this i'm using this function :
public function feed()
{
$posts=Post::with('user')
->with('reacts')
->withCount('comments')
->orderBy('created_at', 'DESC')
->get();
return response()->json(["posts" => $posts]);
}
the response is:
i want to add one more field in Posts Object for isUserLiked and if the current authenticated user liked the post then value will be true or false for him something like this:
i can add a additional field but how can i set the value dynamically for that
this is what i am doing in my Post Model:
protected $appends = ['isUserLiked'];
public function getIsUserLikedAttribute($id)
{
$react=React::where('user_id',auth()->user()->id)->where('post_id',$id)->exists();
return $react;
}
this is returning false because i don't know any way to pass the arguments(Post id).
is there any better way i can get the desired response? Thanks!
public function getIsUserLikedAttribute($id)
{
return React::where('user_id',auth()->user()->id)->where('post_id',$this->id)->exists();
}
In your user model:
public function reacts(){
return $this->hasMany(React::class);
}
public function scopeReactOnPost($query, $post_id){
return $this->reacts()->where(function($query) use ($post_id){
$query->where('post_id',$post_id);
});
}
and in your controller:
$user->reactOnPost($post_id)->first();
or
$user->reactOnPost($post_id)->get()->count();
Will let you know if user had any reaction on the specified post.
and for adding this to your json output you can artisan make a resource for your post model. Laravel Resources
I'm using JSON request to get nation detail in my view, here is how I am doing it;
Controller:
public function ajaxrequest(Request $request)
{
$nations = Nation::all()->pluck('nation', 'id');
return response()->json($nations);
}
now I want to access data from Area table, I will have to create another controller? or I can add that in the above controller? I have 10 different tables like nation from where I want to get data through JSON. but I am not sure whether I can do everything in a single controller.
It all depends how do you want to access data and yes you can fetch data from one controller only if it's needed.
Also you can check it based on the request
EXAMPLE :
public function ajaxrequest(Request $request)
{
$check = $request->get('something_to_check");
if($check){
$data = Table1::all()->pluck('id');
}else{
$data = Table2::all()->pluck('id');
}
return response()->json([
'data' => $data,
//...
]);
}
Like #ViperTecPro mentioned, you can access multiple tables from the same method in a controller but if possible you should have separate endpoints for each case to you get rid of multiple if checks.
Just a thought.
I have the following data model:
(Publication) <-[belongsToMany]-> (Subscriber)
I want to create a Nova Partition Metric to display the number of Subscribers for each Publication.
The calculate method of my Partition class looks like this:
public function calculate(Request $request)
{
return $this->count($request, Subscriber::with('publications'), 'publication.id');
}
But I am getting an "unknown column" error. Anyone know how to make this work?
You could do something like this:
public function calculate(Request $request)
{
$subscribers = Subscriber::withCount('publications')->get();
return $this->result(
$subscribers->flatMap(function ($subscriber) {
return [
$subscriber->name => $subscriber->publications_count
];
})->toArray()
);
}
The count helper only allows to group by a column on model's table. It also don't allow to join tables.
If you want a more complex query, with a join and a group by column in another table, you can build your own array of results and return it with the results helper.
You can see the results helper docs here: https://nova.laravel.com/docs/1.0/metrics/defining-metrics.html#customizing-partition-colors
You should create your array (you can use eloquent or query builder here) inside the calculate function, then return that array with the results helper.
Hope this helps!
You can make the groupBy on publication_foreign_key in Subscriber table and edit the publication_foreign_key to publication_name using ->label() method
Like this
public function calculate(Request $request)
{
return $this->count($request, Subscriber::class, 'publication_id')
->label(function($publicationId)
{
switch($publicationId)
{
case publication_foreign_key_1 : return publication_name_1;
break;
case publication_foreign_key_2 : return publication_name_2;
break;
default: return 'Others';
}
});
}
I am using laravel eloquent. I have fetched data from two table using eloquent.
I have post table and chat table. For post table I have model Post.php and for chat table I have model Chat.php. Here is the the eloquent relation I have created to fetch chat for individual post for a user.
in Post.php
public function TeamMessage()
{
return $this->hasMany('App\Chat','post_id');
}
And in Chat.php
public function ChatRelation()
{
return $this->belongsTo('App\Post');
}
it is working perfect. But this relation fetch all messages for a specific post. I want to fetch all unread message from chat table. I have a column named unread in chat table.
Now my question is how I can fetch only unread message for a specific post.
While the other answers all work, they either depend on scopes (which are very useful in many circumstances) or on you having already instantiated an instance of $post, which doesn't let you eager load multiple posts with their messages.
The dynamic solution is this, which will let you fetch either 1 or more posts and eager load their messages with subquery:
$posts = Post::with(['TeamMessage' => function ($query) {
$query->where('unread', true); // This part applies to the TeamMessage query
}])->get();
See in documentation
Edit:
If you, however, want to filter the posts, to only show those that have unread messages, you need to use whereHas instead of with:
$posts = Post::whereHas(['TeamMessage' => function ($query) {
$query->where('unread', true); // This part applies to the TeamMessage query
}])->get();
More in the documentation.
You can also chain whereHas(...) with with(...).
For querying relationships, you have to call them as functions instead of properties, like this:
$unreadPosts = $post->TeamMessage()->where('unread', true)->get();
For more information on this you can take a look at the docs.
You need to create a local scope on your model, information on local scopes can be found here: https://laravel.com/docs/5.6/eloquent#local-scopes
public function scopeUnread($query)
{
return $query->where('unread', 1);
}
Then in your controller/view
$unread = $yourmodel->unread()
First I would change your relation names to the name of the entity in lower case:
in Post.php
public function chats()
{
return $this->hasMany('App\Chat','post_id');
}
And in Chat.php
public function post()
{
return $this->belongsTo('App\Post');
}
public function scopeUnread($query)
{
return $query->where('unread', 1);
}
Then you can use
$post->chats()->unread()->get();
On my User model I have the following:
public function isOnline()
{
return $this->hasMany('App\Accounting', 'userid')->select('rtype')->latest('ts');
}
The accounting table has activity records and I'd like this to return the latest value for field 'rtype' for a userid when used.
In my controller I am doing the following:
$builder = App\User::query()
->select(...fields I want...)
->with('isOnline')
->ofType($realm);
return $datatables->eloquent($builder)
->addColumn('info', function ($user) {
return $user->isOnline;
}
})
However I don't get the value of 'rtype' for the users in the table and no errors.
It looks like you're not defining your relationship correctly. Your isOnline method creates a HasMany relation but runs the select method and then the latest method on it, which will end up returning a Builder object.
The correct approach is to only return the HasMany object from your method and it will be treated as a relation.
public function accounts()
{
return $this->hasMany('App\Accounting', 'userid');
}
Then if you want an isOnline helper method in your App\User class you can add one like this:
public function isOnline()
{
// This gives you a collection of \App\Accounting objects
$usersAccounts = $this->accounts;
// Do something with the user's accounts, e.g. grab the last "account"
$lastAccount = $usersAccounts->last();
if ($lastAccount) {
// If we found an account, return the rtype column
return $lastAccount->rtype;
}
// Return something else
return false;
}
Then in your controller you can eager load the relationship:
$users = User::with('accounts')->get(['field_one', 'field_two]);
Then you can do whatever you want with each App\User object, such as calling the isOnline method.
Edit
After some further digging, it seems to be the select on your relationship that is causing the problem. I did a similar thing in one of my own projects and found that no results were returned for my relation. Adding latest seemed to work alright though.
So you should remove the select part at very least in your relation definition. When you only want to retrieve certain fields when eager loading your relation you should be able to specify them when using with like this:
// Should bring back Accounting instances ONLY with rtype field present
User::with('accounts:rtype');
This is the case for Laravel 5.5 at least, I am not sure about previous versions. See here for more information, under the heading labelled Eager Loading Specific Columns
Thanks Jonathon
USER MODEL
public function accounting()
{
return $this->hasMany('App\Accounting', 'userid', 'userid');
}
public function isOnline()
{
$rtype = $this->accounting()
->latest('ts')
->limit(1)
->pluck('rtype')
->first();
if ($rtype == 'Alive') {
return true;
}
return false;
}
CONTROLLER
$builder = App\User::with('accounting:rtype')->ofType($filterRealm);
return $datatables->eloquent($builder)
->addColumn('info', function (App\User $user) {
/*
THIS HAS BEEN SUCCINCTLY TRIMMED TO BE AS RELEVANT AS POSSIBLE.
ARRAY IS USED AS OTHER VALUES ARE ADDED, JUST NOT SHOWN HERE
*/
$info[];
if ($user->isOnline()) {
$info[] = 'Online';
} else {
$info[] = 'Offline';
}
return implode(' ', $info);
})->make();