I have two tables: requestgenerals and requestinformations.
The relationship between the 2 tables is:
requestinformations belongsTo requestgenerals
requestgenerals hasMany requestinformation.
Below are the tables:
requestgenerals table
and
requestinformations table
I tried the following: $requestgenerals = Requestgeneral::without('requestinformation')->get(); but I still get all the rows from the requestgenerals table instead of just two.Please assist
You should use this:
$requestgenerals = Requestgeneral::doesntHave('requestinformations')->get();
if you want to get all records that don't have related record in second table. Take a look at Eloquent documentation.
Use doesntHave for get data doestnt have requestinformations
$requestgenerals = Requestgeneral::doesntHave('requestinformations')->get();
For refernce refer this link
Example
Related
I am trying to fetch soecific columns data from relational table but it is giving me null
$allConsignments = Consignment::query();
$allConsignments->select(['id','customer_reference'])->with('customers:name,id')->orderBy('id', 'desc')->limit(5000)->get();
When I don't use select() then it gives correct data .
like this
$allConsignments = Consignment::query();
$allConsignments->with('customers:name,id')->orderBy('id', 'desc')->limit(5000)->get()
it is working but I also need specific columns from Consignment Table. what could be the reason?
You can also do like this.
$allConsignments = Consignment::query();
$allConsignments::with('customers:name,id')->orderBy('id', 'desc')->limit(5000)->get(['id','customer_reference']);
Actually, I also need to select the foreign key column from the table on which relationship is based. for example in my case I have customer_id in consignment table so it should be like that
$allConsignments = Consignment::query();
$allConsignments->select('id','customer_reference','customer_id')->with('customers:name,id')->orderBy('id', 'desc')->limit(5000)->get();
I need to select customer_id as well
I have two tables. One is user and the other is category, I have written this Eloquent ORM query to retrieves data from category
$category = Category::where(['status'=>'active'])->orderBy('id','asc')->get();
In category table here has a field called user_id. I want to join the user table and want to retrieve the user name where category table 'user_id' == user table 'id'.
How can I do this in Laravel eloquent ORM without Foreign key And Multiple models.
I have 3 tables name like "product" , "user", "product_type" so in my case user and product_type having many to many relationship and user and product having one to many relationship and product and product_type having one to one relationship.
I create one pivot table for user and product_type. inside that pivot table, I added one more column for description. so in product listing page I need to display description from that pivot table.
My code look like this:
Product::with('user)->with('product_type')->get();
To get extra fields from pivot table you need to use withPivot in function of your model Like this:
public function product_type() {
return $this->belongsToMany('App\Product','product_type','product_id','user_id')->withPivot('column1', 'column2');
}
you may also refer laravel docs for it:
https://laravel.com/docs/5.7/eloquent-relationships
I have a model which holds a property with zero to many values. Those values are strings (e-mail addresses). But I don't want to create an extra model for such values since they only appear in this property.
As far as I read the docs I need to have a model for my e-mail addresses to gain full power of Eloquent.
Am I missing something out or is there no clean way to spare a model for a database table for relationships?
A short example of my database tables in question:
Table A:
- id [serial]
- name [string]
- someProperty [string]
- mailAddresses [unsigned int; reference to id of Table B]
Table B:
- id [serial]
- mail [string]
I've got a model for Table A:
class ModelA extends Eloquent {
protected $table = 'Table A';
public function mailAddresses() {
return $this->hasMany('<what to put here?>');
}
}
Bascially, you have 1 Model for 1 Database Table (except the Table is an intermediate table (pivot table)).
So shortly, yes. If you want Eloquent Models to work properly, you need to create a Model for your E-Mail Table.
So i have the following tables: 'order', 'comments', 'personnel' and 'contactperson'
What i want is to get all the orders with their comments and thats comment's author
so i do this to get the comments:
Order::with('comments')->get();
No problem here. But how can i get the author of those comments.
The Order table has the following fields:
id_author -> int
fk_author -> enum('personnel','contactperson')
Now depending on the fk_author field, the author should be fetched from the personnel table or the contactperson table.
How can i achieve this?
Look into polymorphic relations. On your orders table, you will want to rename your columns to fit what Eloquent expects author_id, author_type instead of id_author and fk_author