I tried to pass data from the database to view. Now I have to write some SQL code in the controller. Is it possible to do more queries from two Query Builder instances? Like my code, obviously, it didn't work; it throws an error.
Method Illuminate\Support\Collection::addselect does not exist.
Has anyone a better idea?
class StatisticsController extends Controller
{
public function statistic()
{
$right = DB::table('answers')
->select('questions.question_title', 'questions.chapters_id',
DB::raw('count(*) as rightanswers'))
->join('questions', 'questions.id', '=', 'answers.questions_id')
->where('answers.is_correct', 1)
->groupBy('questions.question_title', 'questions.chapters_id')
->get();
$wrong = DB::table('answers')
->select('questions.question_title', 'questions.chapters_id',
DB::raw('count(*) as wronganswers'))
->join('questions', 'questions.id', '=', 'answers.questions_id')
->where('answers.is_correct', 0)
->groupBy('questions.question_title', 'questions.chapters_id')
->get();
$data = $right->addselect('questions.title', 'chapters_id',
'rightanswers/(rightanswers+wronganswers) as rightigeRate')
->join('wrong', 'right.questions.title', '=', 'wrong.questions.title')
->get();
return view('/statistics', compact('data'));
}
}
Related
I have got three tables Kudos, Kudoscategories, and specialpost. I need to get the data from those tables and check the post id using a where condition.
I have attached the database table screenshot here
I already tried this, but it's not getting any result.
$results = DB::table('kudos')
->select('kudos.description','kudoscategory.catname','kudoscategory.image','kudos.spid')
->join('kudoscategory', 'kudoscategory.id', '=', 'kudos.categoryid')
->where('kudos.spid', '=', $post_id)
->first();
return $results;
What I need to do is get the results using below where condition newsfeed_special_posts.main_post_id = kudos.spid
You must add another join with newsfeed_special_posts.
The query will be like,
$results = DB::table('kudos')
->select('kudos.description','kudoscategory.catname','kudoscategory.image','kudos.spid')
->join('kudoscategory', 'kudoscategory.id', '=', 'kudos.categoryid')
->join('newsfeed_special_posts', 'newsfeed_special_posts.main_post_id', '=', 'kudos.spid')
->where('kudos.spid', '=', $post_id)
->first();
return $results;
Though this is not a good practice for laravel. using laravel eloquent relationships will be more efficient for these results.
https://laravel.com/docs/5.8/eloquent-relationships
you can still do it this way. still efficient to avoid sql injection since you are getting all the record from the 3 tables. seeing your table above, its not properly normalised. anywaye try this.
$results = DB::table('kudos')
->leftjoin('kudoscategory', 'kudoscategory.id', '=', 'kudos.categoryid')
->leftjoin('newsfeed_special_posts', 'newsfeed_special_posts.id', '=', 'kudos.spid')
->where('kudos.spid', '=', $post_id)
->first();
return $results;
you can try this code
at first, create model Kudos,KudosCategory,NewsfeedSpecialPosts
Kudos Model
public function kudoscategory_dta()
{
return $this->belongsTo('App\Model\KudosCategory','categoryid');
}
public function newsfeed_special_posts_dta()
{
return $this->belongsTo('App\Model\NewsfeedSpecialPosts','spid','main_post_id ');
}
controller
Kudos::with('kudoscategory_dta','newsfeed_special_posts_dta')->first();
I've been trying to solve this for quite a while now. I want to join these two scopes from my Match Model:
public function scopeMainMatches($query)
{
return $query->where('type', 'main');
}
public function scopeDotaMatches($query)
{
return $query->join('leagues', function ($join) {
$join->on('matches.league_id', '=', 'leagues.id')
->select('matches.*')
->where('leagues.type', '=', 'dota2')
->where('matches.type', '=', 'main');
});
}
so basically, when I put in into join eloquent relationship it will be the same like this:
$query = DB::table('matches')
->join('leagues', 'leagues.id', '=', 'matches.league_id')
->select('matches.*')
->where('leagues.type', '=', 'dota2')
->get();
it works fine during the terminal check. but I need to connect 2 scopes for the Controller which looks like this:
$_matches = \App\Match::mainMatches()
->get()
->load('teamA', 'teamB')
->sortByDesc('schedule');
so when I try to connect mainMatches and dotaMatches, it doesn't show up on the matches. although when i run php artisan tinker, it returns the correct output, but it won't show up on the matches table.
$_matches = \App\Match::mainMatches()
->dotaMatches()
->get()
->load('teamA', 'teamB')
->sortByDesc('schedule');
any Ideas how to work on this? TYIA!
I've managed to join two tables in just one scope here is the code:
public function scopeMainMatches($query) {
return $query->join('leagues','leagues.id','=','matches.league_id')->select('matches.*')->where('matches.type', 'main');
}
Looking at the API for Builder it seems that all parts of the query are kept in properties like $joins, $wheres, $groups etc.
I also see those properties are public.
My use case is for example scopes, let's say (pure fiction)
class User extends Model
{
public function scopeIsSmart($query)
{
return $query->join('tests', 'users.id', '=', 'tests.user')
->where('tests.score', '>', 130);
}
public function scopeIsMathGuy($query)
{
return $query->join('tests', 'users.id', '=', 'tests.user')
->where('tests.type', '=', 'math');
}
}
If I now write
User::query()->isSmart()->isMathGuy()->get();
I will get an error for joining the same table 2 times. What is a good way to make the joins array unique? (no duplicate joins)
You can check for existing JOINs:
public function scopeIsMathGuy($query)
{
if (collect($query->getQuery()->joins)->where('table', 'tests')->isEmpty()) {
$query->join('tests', 'users.id', '=', 'tests.user');
}
$query->where('tests.type', '=', 'math');
}
You can also create a helper like joinOnce() (see this PR).
Try this:
$query = Test::query();
if ($request['is_smart']) {
$query->where('score', '>', 130);
}
if ($request['is_math']) {
$query->where('type', 'math');
}
$result = $query->with('users')->all();
$users = $result->get('users');
I am building an api in laravel 5.3 using eloquent if I use /api/location/event_name/event_status then I am getting results.
But when I use /api/location/event_name or /api/location/ nothing comes.
How to write the query so that all my link show result?
class events_api extends Controller
{
public function events($location = "",$event_name="",$event_status="")
{
$events = DB::table('event_table')
->join('event_details', 'event_table.event_id', '=', 'event_details.event_id')
->join('venue', 'event_details.venue_id', '=', 'venue.venue_id')
->where('venue.venue_city','=',$location)
->where('event_table.event_name','=','$event_name')
->where('event_table.event_status','=','$event_status')
->where('event_table.event_post_status','=','publish')
->select('event_table.event_title','event_details.event_start_ts','event_details.event_views','venue.venue_name','venue.venue_city','venue.venue_location')
->get();
echo $events;
}
}``
If you would like to make a subQuery try using toSql method:
class events_api extends Controller
{
public function events($location = "",$event_name="",$event_status="")
{
$subQuery = DB::table('event_table')
->join('event_details', 'event_table.event_id', '=', 'event_details.event_id')
->join('venue', 'event_details.venue_id', '=', 'venue.venue_id')
->where('venue.venue_city','=',$location)
->where('event_table.event_name','=','$event_name')
->where('event_table.event_status','=','$event_status')
->where('event_table.event_post_status','=','publish')
->select('event_table.event_title','event_details.event_start_ts','event_details.event_views','venue.venue_name','venue.venue_city','venue.venue_location');
DB::table(DB::raw("{$subQuery->toSql()} as main_query"))
->mergeBindings($subQuery->getBindings())
// build your query here
->get()
}
}
You'll also need to mergeBindings if you use any bindings in subquery
I have the following relationship functions in my Job model:
public function resourceTypes(){
return $this->belongsToMany('ResourceType', 'job_requests');
}
public function resources(){
return $this->belongsToMany('Resource', 'jobs_resources')->withPivot('flow_type', 'resource_type_id');
}
I am able to get an object with data from both of the above relationships using:
$job = Job::findorfail($projectId);
$result = $job->with('resources.resourceTypes')->get();
I would like to put a where clause on the jobs_resources pivot table - specifically on the column flow_type.
How would I do this?
Try something like this:
$job = Job::with('resources' => function($q) {
$q->with('resourceTypes')->where('flow_type',2);
})->findorfail($projectId);
In above you will get only those resources with flow_type = 2
I ended up using the following statement:
Job::with(['resources' => function ($query){
$query->wherePivot('flow_type', '=', '1' );
}, 'resources.resourceTypes'])->where('id', $projectId)->firstOrFail();
$result = DB::table('job')
->join('job_resources', 'job.id', '=', 'job_resources.job_id')
->join('job_requests', 'job_resources.request_id', '=', 'job_requests.id')
->where('job_resources.flow_type', '=', CONDITION)
->get();
Your table data is not clear from your input, but this method (query builder) should work