Hi I am building an application and I have a table for example projects and then settings. However they do not have a foreign key with each other and i have other tables such as tasks, clients etc. And these have settings which I am planning to save in the settings table.
The settings table has a column of type, which i will fill with the related model name e.g. project. Anyway when i am fetching a project I also want to fetch a the settings where the type = project. So I've tried to do a table join instead however this has thrown the following error:
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'project' in 'on clause' (SQL: select * from `projects` inner join `settings` on `type` = `project`)
The code I've used is as follows:
return \Project::()->join('settings', 'type', '=', 'project')->get();
I see what the problem is, its looking for a column called project however there isn't one. I suppose what i want to do is use eloquent and a query function to join the table and then query the settings table where type = project. does anyone know how i can do this?
update from burak answer
I've tried to put this in my model as so so
settings.php
public function sprint() {
return \Setting::where('type', '=', 'sprint')->get();
}
and sprint.php
public function settings() {
return \Setting::where('type', '=', 'sprint')->get();
}
however I get this error Call to undefined method
Illuminate\Database\Eloquent\Collection::addEagerConstraints() and I've called it using this method:
return Sprint::with(['settings'])->get();
what have i done wrong here?
Because you are not referencing the table names and you are comparing columns. Instead, what you need is a where statement within your join condition to compare with a value.
return DB::table('projects')
->join('settings', function ($join) {
$join->where('settings.type', '=', 'project');
})->get();
But you should better get settings and projects one by one as all identical settings columns will be added to your projects rows which is not good.
$data = [];
$data['projects'] = Project::all();
$data['settings'] = Settings::where('type', '=', 'project')->first();
return $data;
Update:
Within your Sprint model
public function scopeWithType()
{
return static::join('settings', function ($join) {
$join->where('settings.type', '=', 'sprint');
});
}
Then within the controller
Sprint::withType()->get();
I have not tried but I think this is what you want. This is how we do subqueries or query joins with where clause.
return \Project::join('settings', function($q) {
$q->where('type', '=', 'project');
})->get();
your code looks for records matching project field in the table settings and type field in the project table, which is not the case.
Related
I am using Laravel 5.6 and i have a standard query
Order::where('dict_statuses_id', 1)
->leftJoin('dict_statuses', 'dict_statuses_id', '=', 'dict_statuses.id')
->get();
So i have list of orders with details where status = 1 (new) after join table i see status as New or Complete. Is any way to change this query using whereHas ?
i tried use
Order::whereHas('status', function($q){
$q->where('dict_statuses_id', 1);
})->get();
But no results, in model Order i have
public function status()
{
return $this->hasMany('App\DictStatuses');
}
[Updated]
i have an error:
Column not found: 1054 Unknown column 'dict_statuses.orders_id'
in 'where clause' (SQL: select * from `orders` where exists
(select * from `dict_statuses` where `orders`.`id` = `dict_statuses`.`orders_id` and `dict_statuses_id` = 1)
and `orders`.`deleted_at` is null)
In my table i have table Orders where is field: dict_statuses_id
and table dict_statuses with fields: id, public_name
Why error is about dict_statuses.orders_id
Try Order::has('status')->get();
You can pass in variables to a relationship so you could potentially do.
public function status($id) {
return $this->hasMany(DictStatuses::class)->where('dict_statuses_id', $id);
}
Try defining the local key & foreign key.
$this->hasMany(DictStatuses::class, 'foreign_key', 'local_key');
I think your dict_statuses doesn't have a column called order_id.
Please include that column in your migration
then call
Order::whereHas('status', function($q){
$q->where('dict_statuses_id', 1);
})->get();
in your controller
or change the relation in Order model as
public function status(){
return $this->belongsTo('App\DictStatuses'):
}
Three main tables:
products
advertisers
locations
Two pivot tables:
advertisers_locations
products_locations
Relationships:
A product belongs to an advertiser and an advertiser has many locations (Locations it can ship products to)
A product can also have it own set of locations that override the advertiser locations (Some products have delivery restrictions)
What I need to do is:
Select all products
Check if products_locations table for product ID and join it.
If it does not exist then join the advertisers locations table
Is this possible to do in one query and using eloquent? Here's my code - struggling with the conditional:
public function scopeWhereShippableToLocation($query)
{
$location_id = session('location_id');
$query->where(function ($q) use ($location_id) {
$q->join('products_locations', 'products_locations.product_id', '=', 'products.id')
->where('products_locations.location_id', '=', $location_id);
});
$query->orWhere(function ($q) use ($location_id) {
$q->join('advertisers_locations', 'advertisers_locations.advertiser_id', '=', 'products.advertiser_id')
->where('advertisers_locations.location_id', '=', $location_id);
});
//dd($q->toSql());
return $query;
}
This is currently producing a MySQL error:
Column not found: 1054 Unknown column 'products_locations.location_id' in 'where clause' (SQL: select `products`.*,
I think I have a solution for you using eloquent, rather than the query builder. You need to check to see if the relationship exists, if not you need another query. This can be done using the following:
public function scopeWhereShippableToLocation($query)
{
$location_id = session('location_id');
// WhereHas check to see if a relationship exists, IE: The pivot table
// orWhereHas will be checked if the first where does not exist
$query->whereHas('products_locations', function ($q) use ($location_id) {
$q->where('location_id', $location_id);
})->orWhereHas('advertisers_locations', function ($q) use ($location_id) {
$q->where('location_id', $location_id);
});
return $query;
}
This should work providing that your Products, Advertisers and Locations relationship methods are set up.
I'm quite new to Laravel and I'm now facing this issue while trying to create a query:
I have the following Morphable classes:
\App\User
class User {
public function userable()
{
return $this->morphTo();
}
}
\App\Distributor
class Distributor {
public function user()
{
return $this->morphOne('App\User', 'userable');
}
}
user table has the fields: name, email, status, userable_type and userable_id.
distributor table has the fields: store_code and location_id.
By using Eloquent, i need to start the query from Distributor model and select only the following fields: 'name, email, store_code'.
I'm trying the following, but laravel says user.name doesn't exists :(
$queryBuilder = \App\Distributor::has('user');
$queryBuilder->select(['user.name']);
$queryBuilder->get();
QueryException in Connection.php line 651:
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'user.name' in 'field list' (SQL: select user.name from distributor where (select count(*) from user where user.userable_id = distributor.id and user.userable_type = App\Distributor and user.deleted_at is null) >= 1)
I was able to achieve my goal forcing the join relationship, but this seems wrong, I think Eloquent is able to find the relation by itself as the Morph relationship is specified in the Model.
Just for record, this works good:
$queryBuilder = \App\Distributor::has('user');
$queryBuilder->join('user', function($join) {
$join->on('userable_id', '=', 'distributor.id')
->where('userable_type', '=', \App\Distributor::class);
});
$queryBuilder->select(['user.name']);
$queryBuilder->get();
Also, since its a one-to-one like relationship, sometimes I'll need to order the results using one of the users columns
But I need another way to do it without forcing the join, something clean as the first example.
read about with() function in the docs
$queryBuilder->select('id','store_code');
$queryBuilder = \App\Distributor::with(['user'=>function($query){
$query->select('id','name','email')
}]);
$queryBuilder->has('user');
$queryBuilder->get();
I'm trying to fetch following things from the database:
user name
user avatar_name
user avatar_filetype
complete conversation_messages
with the following query:
static public function getConversation($id)
{
$conversation = DB::table('conversation_messages')
->where('belongsTo', $id)
->join('users', 'conversation_messages.sender', '=', 'users.id')
->join('user_avatars', 'conversation_messages.sender', '=', 'user_avatars.id')
->select('users.name', 'conversation_messages.*', 'user_avatars.name', 'user_avatars.filetype')
->get();
return $conversation;
}
It works fine so far, but the avatar's column name is 'name' like the column name from the 'users' table.
So if I'm using this query the to get the output via $conversation->name, the avatar.name overwrites the users.name
Is there a way to rename the query output like the mysql "as" feature at laravel 5.1?
For example:
$conversation->avatarName
$conversation->userName
Meh okay.. i've found a simple solution here
->select('users.name as userName', 'conversation_messages.*', 'user_avatars.name as avatarName', 'user_avatars.filetype')
As you can mention I've added the requested "as-Feature" next to the table.columnName
Take a look at this example of trying to join three tables staffs, customers and bookings(pivot table).
$bookings = \DB::table('bookings')
->join('staffs', 'staffs.id' , '=', 'bookings.staff_id')
->join('customers', 'customers.id' , '=', 'bookings.customer_id')
->select('bookings.id', 'bookings.start_time', 'bookings.end_time', 'bookings.service', 'staffs.name as Staff-Name', 'customers.name as Customer-Name')
->orderBy('customers.name', 'desc')
->get();
return view('booking.index')
->with('bookings', $bookings);
I had the following problem, simplified example:
$result = Donation::join('user', 'user.id', '=', 'donation.user_id')->where('user.email', 'hello#papabello.com')->first();
$result is a collection of Donation models. BUT CAREFUL:
both tables, have a 'created_at' column. Now which created_at is displayed when doing $result->created_at ? i don't know. It seems that eloquent is doing an implicit select * when doing a join, returning models Donation but with additional attributes. created_at seems random. So what I really wanted, is a return of all Donation models of the user with email hello#papabello.com
solution is this:
$result = Donation::select('donation.*')->join('user', 'user.id', '=', 'donation.user_id')->where('user.email', 'hello#papabello.com')->first();
Yeah, simply rename the column on either table and it should work.
Also what you can do is, rename the user.name column to anything, also rename sender column of conversation_messages to id and perform a natural join.
I am trying to Select all non empty columns in 'user' table where column name is 'review'.
$applications = DB::table('users')
->join('applications', 'user.update_id', '=', 'applications.id')
->whereNotNull('users.review')
->select('user.id', 'user.rating', 'user.appid', 'user.review', 'applications.title', 'applications.price', 'applications.icon_uri')
->orderBy('user.id','asc')
->paginate(20);
$applications->setPath('');
return $applications;
But return data includes all information of both 'user.review' empty and not empty as well.
I feel there is no effect of whereNotNull() and i found no error in the statement.
I tried moving ->whereNotNull('user.review') this line top and bottom result is same.
I tried even by removing select and orderBy but returns same data.
$applications = DB::table('users')
->join('applications', 'user.update_id', '=', 'applications.id')
->whereNotNull('users.review')
->paginate(20);
$applications->setPath('');
return $applications;
Is there any way to make it work?
if your table is users you are missing an s in the table name, you should write
->whereNotNull('users.review')
same case in the join with the field update_id, otherwise you have to change the table name in the table method