Zend framework 2 newb here so bear with me. See the code below:
public function setMediaToTrue($users) {
foreach($users as $user) {
$user->media = true;
}
return $users;
}
This method receive $users ResultSet object and update the media property to true. The problem is I can't modify the property of $users object inside iteration. Things that I have tried :
1. Use $users->current() inside iteration. example below :
$users->current()->media = true;
Create setMedia inside $user model and use it inside iteration:
$user->setMedia(true); // This does not update the property either
I think the problem because ZF2 create new copy of object for each iteration. I was looking at using Hydrator but can't get my head around it.
Thanks
Related
My controller looks like this:
public function show($id)
{
$model = MyModel::with([
'model2.model3.model4:id,value',
...
]);
if (myCondition) {
unset($model->model2->model3->model4);
$model->model2->model3->model4 = Model4::where('value', 'Some Value')->first();
}
return $audit;
}
In certain condition I'd like to override the result from the query with another value from the Model4 to return the good data to the client.
But I want to know if there is another way with laravel to do that. Actually I have to use unset and then push the new content if I want to change the value of the model4 property. If I don't use unset the object isn't changed, the value new value assigned to model4 is ignored I don't know why I can't just write this line
$model->model2->model3->model4 = Model4::where('value', 'Some Value')->first();
So I want to know why I can't see changes in my json object when I don't use unset and I want to know if there is anotehr way to deal with laravel for my situation ?
You can simply use setRelation method.
if ($myCondition) {
$model->model2->model3->setRelation('model4', Model4::where(...)->first());
}
I am currently trying to make a function that calls different scopeQueries such as scopeByLocation() or scopeByPublished() on models defined in an array. I've got the basics working through [this link][1]. However, when trying to access custom made query scopes that are defined in the corresponding model, I get the following error: "Call to undefined method Illuminate\Database\Query\Builder::ForLocation($location)->get()".
What I want to achieve is a single method which loops through every model in the array of models and retrieves & calls the right scopeQuery on the model, something like this:
$modelElements = $model::{$queryScope}();
Where for example $model = 'Modules\News\Models\Article'
And $queryScope is a defined queryScope in the model itself. E.g. scopeForLocation($location).
I've tested $queryScope = 'all' and I get a result just fine, however when I try to access a custom queryScope ($queryScope = 'ForLocation($location)->get') that exists within for example the Location model, I get the following error: "Call to undefined method Illuminate\Database\Query\Builder::ForLocation($location)->get()".
So this all happens in a foreach-loop where every model in my models-array gets called and then the corresponding queryScope gets called on the model.
Why does the $queryScope = 'all' method works on my dynamic models, but other scopes throw an error? I really hope someone could help me get into the right direction with this issue.
Thanks in advance,
J. Doe.
Okay, I've finally solved it the following way:
//array of models
public function models()
{
return [
'Modules\Website\Models\Article',
...
];
}
//function that retrieves all elements for a model
public function getAllElementsForModel($model, $param)
{
//instantiate model
$model = new $model;
//call queryScope
//'queryScope' could be any queryScope that is defined within your model(s),
//the parameters are needed for the associated queryScope
$query = call_user_func_array([$model, 'queryScope'], [$param1, $param2]);
$result = $query->get();
//do stuff with your $result
}
//retrieves all
public function all($param)
{
//loop through the array of models
foreach($this->models() as $model){
$this->getAllElementsForModel($model, $param);
//do stuff here...
}
}
Sharing is caring!
I have a Laravel model acl_groups that has a JSON column inherits. What should I do, the "laravel way" to query the inherited groups when checking if a group can do something? The rights are stored in another JSON column, allow/deny so I can just do a in_array to check a single group if they have access.
On your model you can set a getter
public function getInheritsAttribute($v)
{
return $v ? json_decode($v, true) : [];
}
OR
if you dont want a getter you can try a pseudo getter
public function getPseudoAttribute()
{
return $this->inherits ? json_decode($this->inherits, true) : [];
}
Kind of maybe did mistake on second one.
And on other model the same thing
so when you call $item->inherits = you will get an array
First you may try to prepare the array like removing same keys or values
and after just check
if (array_key_exists('thing_to_check', $item->inherits)) {
return true;
}
This is not a working code, it is just an idea how you can do you.
Take a look at Cartalyst Sentinel how they check the permissions for groups and users.
How do we create a new Eloquent Collection in Laravel 4, without using Query Builder?
There is a newCollection() method which can be overridden by that doesn't really do job because that is only being used when we are querying a set result.
I was thinking of building an empty Collection, then fill it with Eloquent objects. The reason I'm not using array is because I like Eloquent Collections methods such as contains.
If there are other alternatives, I would love to hear them out.
It's not really Eloquent, to add an Eloquent model to your collection you have some options:
In Laravel 5 you can benefit from a helper
$c = collect(new Post);
or
$c = collect();
$c->add(new Post);
OLD Laravel 4 ANSWER
$c = new \Illuminate\Database\Eloquent\Collection;
And then you can
$c->add(new Post);
Or you could use make:
$c = Collection::make(new Post);
As of Laravel 5. I use the global function collect()
$collection = collect([]); // initialize an empty array [] inside to start empty collection
this syntax is very clean and you can also add offsets if you don't want the numeric index, like so:
$collection->offsetSet('foo', $foo_data); // similar to add function but with
$collection->offsetSet('bar', $bar_data); // an assigned index
I've actually found that using newCollection() is more future proof....
Example:
$collection = (new Post)->newCollection();
That way, if you decide to create your own collection class for your model (like I have done several times) at a later stage, it's much easier to refactor your code, as you just override the newCollection() function in your model
Laravel >= 5.5
This may not be related to the original question, but since it's one of the first link in google search, i find this helpful for those like me, who are looking for how to create empty collection.
If you want to manually create a new empty collection, you can use the collect helper method like this:
$new_empty_collection = collect();
You can find this helper in Illuminate\Support\helpers.php
snippet:
if (! function_exists('collect')) {
/**
* Create a collection from the given value.
*
* #param mixed $value
* #return \Illuminate\Support\Collection
*/
function collect($value = null)
{
return new Collection($value);
}
}
Just to add on to the accepted answer, you can also create an alias in config/app.php
'aliases' => array(
...
'Collection' => Illuminate\Database\Eloquent\Collection::class,
Then you simply need to do
$c = new Collection;
In Laravel 5 and Laravel 6 you can resolve the Illuminate\Database\Eloquent\Collection class out of the service container and then add models into it.
$eloquentCollection = resolve(Illuminate\Database\Eloquent\Collection::class);
// or app(Illuminate\Database\Eloquent\Collection::class). Whatever you prefer, app() and resolve() do the same thing.
$eloquentCollection->push(User::first());
For more information about understanding resolving objects out of the service container in laravel take a look here:
https://laravel.com/docs/5.7/container#resolving
I am using this way :
$coll = new Collection();
$coll->name = 'name';
$coll->value = 'value';
$coll->description = 'description';
and using it as normal Collection
dd($coll->name);
It is better to use the Injection Pattern and after $this->collection->make([]) than new Collection
use Illuminate\Support\Collection;
...
// Inside of a clase.
...
public function __construct(Collection $collection){
$this->collection = $collection;
}
public function getResults(){
...
$results = $this->collection->make([]);
...
}
What worked for me was to name the use namespace and instantiate it directly:
use Illuminate\Database\Eloquent\Collection as EloquentCollection;
# Usage
$this->latest_posts = new EloquentCollection();
Allowed me to merge two data subsets of eloquent collection results, this maintains the relationships - a regular collection (collect()) loses relationship and probably some more metadata.
$limit = 5;
$this->latest_posts = new EloquentCollection();
$pinned_posts = PinnedPostReference::where('category', $category)->get();
if($pinned_posts->count() > 0) {
foreach($pinned_posts as $ppost) {
$this->latest_posts->push($ppost->post);
}
}
# Another Eloquent result set ($regular_posts)
foreach($regular_posts as $regular_post) {
$this->latest_posts->push($regular_post);
}
I'm working on Symfony 1.4 with Doctrine 1.2 and I have some problems.
I have created one Doctrine Collection of my Products like this :
$oProductCollection = new Doctrine_Collection('Products');
And I add some product in :
$oProductCollection->add($oMyProduct);
Then I want to know if a product is already in my Collection. Because if I add my product twice, that overwrite my old version...
I found "contains" function but I can't give my product object directly and I don't know what the key is...
Could you help me please ?
You can set the keyColumn by
//set the id column as key
$oProductCollection = new Doctrine_Collection('Products', 'id');
Then you can use $oProductCollection->contains($oMyProduct->getId()); to check whether $oMyProduct is already in your Collection.
Now you are able to write
if ($oProductCollection->contains($oMyProduct)){
echo "Its already in";
}else{
$oProductCollection->add($oMyProduct);
}
Another alternative. Index your collection by id, and just check if it exists. It should be pretty fast. Take a look at the docs.
Something like:
$id = $oMyProduct->getId();
if (!empty($oProductCollection[$id])){
...
}
You should implement a method Produits::equals(Produit $p) check every object of the collection using a loop.
foreach ($oListeProduit as $p) {
if ($p->equals($produit)) {
return true;
}
}
return false;
You have to use the second parameter of the Doctrine_Collection constructor:
public function __construct($table, $keyColumn = null)
So:
$oProductCollection = new Doctrine_Collection('Products', 'id');
And then contains with an id will work.
Edit: grilled :(