Can someone help me out, I'm trying to do a where query on a Child Model. Everything seems fine when I have a value for the id but it returns nothing when no id is supplied.
My goal is to get all data when no id is supplied and get specific data when id supplied.
Here's my code
Report::with(['project'])
->whereHas('project' function($q) use($programId){
if($programId){
$q->where('program_id', $programId);
}
})->get();
Is there a better way to achieve my goal? or I just lack something on the query? Thank you in advance.
You can use when method for this.
The when method only executes the given closure when the first argument is true. If the first argument is false, the closure will not be executed.
Report::with('project')
->when($programId, function ($query) use ($programId) {
$query->whereHas('project' function($q) use($programId){
$q->where('project.program_id', $programId);
});
})->get();
So I have a little complex answer for this type of questions where you can create a query and do every logic to it.
// Initialise the model
$query = new Report;
// Start building the query
$query->with('project');
// Check if project Id exists
if ($projectId) {
return $query->whereHas('project', function ($subQuery) use ($projectId) {
$subQuery->where('program_id', $programId);
})->get();
} else {
return $query->get();
}
Related
I've followed the instructions on the Laravel documentation for pagination with appends([]) however I'm having a little trouble with the persistence of these parameters.
Say for example, I pass home?category=Cars&make=Tesla to my view. What is the best way to paginate with them Get requests?
Right now I've passed the category as a parameter to the view as (where category is the model i've grabbed findOrFail with the request('category');)
$category_name = $category_model->name;
And then in my view it's like so:
{{ $vehicles->appends(['category' => $category_name])->links() }}
But when I go between pages in the pagination, this $category_name value doesn't seem to persist. Whats the recommended way to achieve what I want?
Thanks.
You can append the query string in your controller when you paginate the result. I'm not sure if that was your only question or even regarding applying the query string as a condition. So here is a sample showing you how to do both. This should give you an idea of how to do it. I just assumed the column names in this example.
$category = request('category');
$make = request('make');
$vehicles = Vehicle::when($category, function ($query) use ($category) {
return $query->where('category', $category);
})
->when($make, function ($query) use ($make) {
return $query->where('make', $make);
})
->paginate(10);
$vehicles->appends(request()->query());
return view('someview', compact('vehicles'));
i want to sort the users through voornaam(firstname). but im getting the data via a relation.
How do i make my query so that, the relation users are sorted by firstname by alphabet
my function:
public function sortfirstname($id) {
$ingeschrevenspelers = UserToernooi::with('users')->where('toernooiid', '=', $id)->get()->all();
//This query ^^
$toernooi = Toernooi::findOrFail($id);
dd($ingeschrevenspelers);
return view('adminfeatures.generatespelerslijst', compact('ingeschrevenspelers', 'toernooi'));
}
What i want to sort
any help is appreciated
thanks in advance
Writing code in your own language doesn't make it very easy for other developers to understand your code.
That being said, you can try the orderBy() method on your relationship
In your model where you define the relationship:
public function relationship()
{
return $this->belongsTo(SomeClass::class)->orderBy('name', 'DESC');
}
Don't fire all() function at the end thus obtaining a Collection instance of result
//query without the all function
$ingeschrevenspelers = UserToernooi::with('users')->where('toernooiid', '=', $id)->get();
//
$ingeschrevenspelers = $ingeschrevenspelers->sortBy('users.firstname');
An alternative to Jordy Groote's answer if you do not want to modify the Model class itself, you can query it with a closure.
$ingeschrevenspelers = UserToernooi::with(['users' => function($q) {
$q->orderBy('voornaam', 'asc');
}])->where('toernooiid', '=', $id)->get()->all();
Reference: https://laravel.com/docs/5.3/eloquent-relationships#constraining-eager-loads
Sidenote: I don't think you need a ->all() when you already did a ->get()
$ingeschrevenspelers = UserToernooi::with(['users' => function($query){
$query->orderBy('voornaam', 'asc');
}])->where('toernooiid', '=', $id)->get()->all();
I'm making a query using the following line:
$items = $this->model->with('subCategory')->get();
But I want to put a query inside the with() method, because I just want to get the items from with() where the status is equal to 0.
How can I achieve this?
There is an "eager loading" in L5 documentation. Here
$items = $this->model->with(['subCategory' => function ($query) {
$query->where('status', 0); }])->get();
These are called eagarload constraints, you can achieve your result using a closure
For example
$items = $this->model->with(['subCategory'=>function($q){
$q->whereId('5');
//or any other valid query builder method.
}])->get();
Let me know how you get on.
I have a table called List which i planned to be displayed into view with this command : $lists= List::with('user', 'product.photodb', 'tagCloud.tagDetail')->get();. But, i want the data displayed is only those that has TagID equal to the one user inputted. Those data can be retrieved from TagCloud table.
What i am currently doing is :
$clouds = TagCloud::select('contentID')
->where('tagDetailID', '=', $tagID)
->get();
$lists = List::with('user', 'product.photodb', 'tagCloud.tagDetail')
->where('id', '=', $clouds->contentID)
->get();
But when i tried to run it, it only return a null value, even though when i am doing return $clouds, it does returned the desired ID.
Where did i do wrong ? Any help is appreciated !
A couple of gotchas with your current solution.
Using get() returns an Illuminate\Database\Eloquent\Collection object. Hence you can't use $clouds->contentID directly since $clouds is a collection (or array if you prefer). See Collection Documentation.
where(...) expects the third parameter to be a string or integer, aka single value. Instead, you are passing a collection, which won't work.
The correct way is to use whereHas() which allows you to filter through an eager loaded relationship.
Final Code:
$lists = List::with('user', 'product.photodb', 'tagCloud.tagDetail')
->whereHas('tagCloud',function($query) use ($tagID) {
return $query->where('contentID','=',$tagID);
})
->get();
See WhereHas Documentation.
What you want is whereHas()
$list = List::with(...)
->whereHas('relation', function($q) use($id) {
return $q->where('id', $id);
})->get();
Apply Where condition in you tagCloud model method tagDetail
public function tagDetail(){
return $q->where('id', $id);
}
I have a search query that needs to be done. However, a search doesn't always have all values set, like in this case.
$aEvents = DB::table('events')
->where('client_id', '=', $client_id);
The question is, how can I make this where statement depend on the value of $client_id. So if the value is empty I don't want the Where statement to occur.
Also, I do not want to write several complete queries with if statements in PHP. To many variables. Ideally I'd like something like this:
$aEvents = DB::table('events')
->(($client_id != "") ? where('client_id', '=', $client_id) : "");
Using eloquent is (really!) nice and save, but I'm not yet up to speed with if statements in std Class objects I guess. Any help is appreciated.
You may try something like this:
$query = DB::table('events');
if(!empty($client_id)) {
$query->where('client_id', $client_id);
}
$aEvents = $query->get(); // Call this at last to get the result
If you are passing client_id to the server via a form/query string(user input) then you may try something like this:
if($client_id = Input::get('client_id')) {
$query->where('client_id', $client_id);
}
Update: For pagination try this:
$aEvents = $query->paginate(10); // For 10 per page
So you may call links() method in your view if you pass it like this:
return View::make('viewName')->with('aEvents', $aEvents);
In the view for pagination links:
$aEvents->links()
You can also use query scopes in the model for this purpose. Scopes allow you to easily re-use query logic in your models. In the model Event, you can add the following query scope:
public function scopeClientID($query, $client_id)
{
if ($client_id != '') {
return $query->where('client_id', '=', $client_id);
} else {
return $query;
}
}
Then from your controller or wherever you're calling it from, you can do the following:
$aEvents = Event::clientID($client_id);
If you want to get all the results, then you can do:
$aEvents = Event::clientID($client_id)->get();
Or if you want pagination, you can do:
$aEvents = Event::clientID($client_id)->paginate();
You can also chain it with other methods like you'd do in a eloquent query.
You can read more about model query scopes at http://laravel.com/docs/eloquent#query-scopes