enter image description herei have 3 tables made in Voyager and with BREAD (news - catg - news_catg).
My 'news' Table have Relationship (Belongs To Many) to 'catg' and the news_catg is the pivot table
Every think is working will except the Delete i have to Delete the Records manually from the pivot table it should be automatic like add and update
finally i found that there is bug in Voyager and there is no way to fix this issue from the admin panel so i did the flowing :
1 - deleted the Pivot table .
2- create new migration file in my app
3 -
` Schema::create('Relation table name', function (Blueprint $table) {
$table->integer('first table id')->unsigned();
$table->foreign('first table id')->references('id')
->on('first table')->onDelete('cascade');
$table->integer('second table id')->unsigned();
$table->foreign('second table id')->references('id')->on('second table');
});`
Relation table name should be like :secondtablename_firsttablename
for ex : catgs_news or it wont work !!!
and the first table id should be tablename_id like news_id
4- then you go to voyager and it will work but you have to edit the new table and add timestamps and you dont have to make bread for it
You can use the detach() function to delete data from pivot table.
Related
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
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
First of all, I'm using laravel 5.1. Now, the scenario is; I have an exam page where they can click a button to take the exam, the action of the button is to attach the exam_id and user_id to the pivot table called examattempt_user. Now that we have a record there, I want to save the grade of a user after the user submitted the exam (clicking the button), and save/update the grade into the pivot table where the exam_id and user_id was saved. Here's my table:
Pivot table Fields:
id
exam_id
user_id
grade
Hi I have 3 tables "temp_quotes", "quotes" and "quote_items"
Every quote generated goes to the "temp_quotes" table at first.
At the end of my multi-step form I need the following:
1- Receive all the quotes from the "temp_quotes" table, send it to the "quote_items" table and delete it from the "temp_quotes" table
2- Generate a new entry in the "quotes" table referencing the "users" table and
the "quote_items" table
Here is all the data and how needs to be save/removed on the tables:
temp_quotes Table
ID
BRAND
MODEL
YEAR
quotes Table:
ID
USER_ID
QUOTE_ID
quote_items Table:
ID
QUOTE_ID
BRAND
MODEL
YEAR
Any help will be appreciated.
How do I set soft delete on an intermediate table which is connecting two different types of entities? I've added deleted_at column, but the docs say that I need to put this into the model:
protected $softDelete = true;
Of course, I don't have a model for an intermediate table.
Any idea?
You can put a constraint on the Eager Load:
public function groups()
{
return $this
->belongsToMany('Group')
->whereNull('group_user.deleted_at') // Table `group_user` has column `deleted_at`
->withTimestamps(); // Table `group_user` has columns: `created_at`, `updated_at`
}
Instead of HARD deleting the relationship using:
User::find(1)->groups()->detach();
You should use something like this to SOFT delete instead:
DB::table('group_user')
->where('user_id', $user_id)
->where('group_id', $group_id)
->update(array('deleted_at' => DB::raw('NOW()')));
You could also use Laravel's Eloquent BelongsToMany method updateExistingPivot.
$model->relation->updateExistingPivot($relatedId, ['deleted_at' => Carbon\Carbon::now()]);
So to use #RonaldHulshof examples you have a User model with a groups relationship which is a belongsToMany relationship.
public function groups() {
return $this->belongsToMany(Group::class)->whereNull('groups_users.deleted_at')->withTimestamps();
}
Then in order to soft delete the pivot table entry you would do the following.
$user->groups()->updateExistingPivot($groupId, ['deleted_at' => Carbon\Carbon::now()]);
As far as I understand it; an intermediate table is simply a length of string attaching one tables record to a record in another table and as such it does not require a soft delete method.
To explain, imagine you have a Users table and a Groups table, each user can have more than one Group and each Group can belong to more than one User. Your pivot table may be User_Group or something like that and it simply contains two columns user_id and group_id.
Your User table and Group table should have a deleted_at column for soft deletes, so when you "delete" say a Group, that group association will not appear in $User->Groups() while the pivot table row has remained unaffected. If you then restore that deleted Group, it will once again appear in $User->Groups().
The pivot table row should only be affected if that group record is hard deleted, in which case the pivot rows should also be hard deleted.
Now I have explained why I do not believe you need to add soft delete to a pivot table; is there still a reason why you need this behavior?