I'm trying to create a site where, when we send an invoice, the relationship between sender and receiver must be active. This is done in a separate table and requires a boolean value of 1 in the other table.
The invoice will be saved in the table invoices with the following structure:
id
sender
receiver
amount
date due
the relationship table has the following structure:
id
partyone
partytwo
active
partyone and partytwo reference the users table.
The users table has the following structure:
id
username
password
What I'm trying to see is, if the relationships table contains partyone and partytwo AND the boolean is equal to one.
This is the function I have in my invoice table to add a new invoice. It can't be added to the database before a user is in an active relationship with that user.
public function addinvoice(){
if($this->request->is('post')) {
$this->Invoice->create();
if (0 === $this->relationship->find('count',array('conditions'=>array('activate'=>1,'relationship'=> $relationship)))) {
$this->Session->setFlash('Sorry, you do not have an active relationship.');
$this->redirect($this->referer());
}
if ($this->Invoice->save($this->request->data)){
$this->Session->setFlash('The invoice has been saved');
}
} else {
$this->Session->setFlash('The invoice could not be saved. Please, try again.');
}
}
This is the simple answer to your question.
Modify your find like this:
$relationship = $this->relationship->find('count', array(
'conditions' => array(
'partyone' => $user_one_id,
'partytwo' => $user_two_id,
),
));
if (!$relationship) {
//Error here
} else {
//Save here
}
Related
I have a pivot table called invite_riskarea which is designed as follows:
This table handles the permissions that have a specific user (through an invite id) to access to specific riskfields. Each riskfield is associated with a riskarea which acts as the main container of specific riskfields.
Within the model Invite I have this relationship:
public function riskareas()
{
return $this->belongsToMany(Riskarea::class)->withPivot('riskfield_id', 'insert', 'edit', 'view');
}
In this way I can return all the riskareas associated with a specific invite, and I should be able to return all the riskfields associated with a specific riskarea in the same invite model.
As you can see from the table invite_riskarea, I have three columns called insert, edit, and delete. These columns manage the types of permissions assigned to a specific user (via an invite id) for a specific riskfield belonging to a riskarea.
I'm trying to retrieve the riskarea permission in the following way:
$invite = Invite::where('id', 58)->first();
$riskarea = $invite->riskareas[0];
$riskfield = $riskareas->riskfields[0];
echo 'view permission => ' . $riskfield->insert;
The problem's that I'm not able to setup a correct relationship in the Invite model that returns me the pivot data of the permissions columns only for the riskfield associated with the riskarea.
So I have manage to handle this situation in this way:
$riskareas = Riskarea::all();
foreach ($riskareas as &$riskarea) {
foreach ($riskarea->riskfields as &$riskfield) {
$result = DB::table('invite_riskarea')
->select('insert', 'edit', 'view')
->where([
'riskarea_id' => $riskarea->id,
'riskfield_id' => $riskfield->id
])
->first();
if ($result) {
$riskfield->insert = $result->insert;
$riskfield->edit = $result->edit;
$riskfield->view = $result->view;
}
}
}
Essentially, I get all the riskareas, and then I iterate over the riskfields associated. For each riskfield, I get the permissions in the invite_riskarea table and then I have the correct structure that I want.
So to summarize:
Is it actually possible create a model relationship that returns the permissions for riskfield and not for riskarea?
Is my table implementation good enough to handle that situation?
I suggest you define back the many-to-many relation for the Riskfield model with the Invite model.
You can also define a direct many-to-many relationship with riskfield in the Invite model. This is how convenient it is for you personally.
And so the inverse many-to-many relationship
public function invites()
{
return $this->belongsToMany(Invite::class)->withPivot('insert', 'edit', 'view');
}
Then get all objects' Riskfields that are associated with the specified invite:
$riskfields = Riskfields::wherehas('invites' . function (Builder $query) use ($invite_id) {
$query->where('invites.id', $invite_id);
})->with('invites')->get();
Then you can access the desired fields of the pivot table in the specified way:
foreach ($riskfields as $riskfield) {
foreach ($riskfield->invites as $invite) {
$insertRiskField = $invite->pivot->insert;
$editRiskField = $invite->pivot->edit;
$viewRiskField = $invite->pivot->view;
}
}
Eager loading executes one query to the database
Yes
Documentation Laravel
I have 3 tables, the first is 'Event' table with columns:
id
showname
eventdate
office_id //the office that made this
photo
user_id //the user that saved the record
...
and some other columns.
The office_id is foreign key in offices below
The second is 'Offices' table
id
name
address
owner_id //the user owner of Office
...
and some other columns.
The owner_id is foreign key in Users below
and the third is 'Users' table
id
name
...
and some other columns.
Now I am trying in an index view file to show the events.
I made that using a scope in Events model that showed the Events that belongs to the signed_in User.
public function scopeHasMyOffice($query, $me)
{
return $query->join('offices', function ($join) use ($me) {
$join->on('events.foffice_id', '=', 'offices.id')
->where('owner_id', $me);
});
}
In the controller, I wrote this code
public function myindex()
{
$my = Auth::User()->id;
if (!is_null($my))
{
$events = Event::HasMyOffice($my)->select('events.*')
->orderby('eventdate', 'desc')
->get();
}
else
{
$events = NULL;
}
}
That works and gives the list of the events whose owner is the user connected.
I have 2 other lists that show all events of the state and the city.
Now I want to show in front of every row a button 'View' that is easy and a button 'Edit' if the event belongs to the office that owner is the user signed in
Only this user can have the option to edit the record.
And this is build for one user (one owner) per office. If they are more I must change it again.
Anyway now I want to do the Edit button but only for the user owners as I explained and need some help.
I thought a nice idea to add to the model Events this code
public function scopeInMyOffice($query, $me, $gid)
{
return $query->join('offices', function ($join) use ($me) {
$join->on('events.foffice_id', '=', 'office.id')
->where('owner_id', $me);
})->where('event.id', $gid);
}
to check every row if it happens but that didnt work.
#if( count($event->InMyOffice(Auth::user()->id, $event->id)) > 0)
Edit
#endif
So I am stuck and need some help.
I am using backpack CRUD package to create my website project in laravel 5.2
I want to establish a relationship between two tables. First table is called customer and second table is called transaction. Each customer has many transaction(1:N relationship).
Customer table record:
ID Name
123456 xyz
Transaction table record:
ID CustomerID
101010 123456
I know that I have to specify the relation in the customer model. But, how can I display the result of the relationship in CRUD ?
You should have relationships on both the Transaction and the Customer models, so you can do $customer->transactions and $transaction->customer:
class Customer extends Model
{
/**
* Get the comments for the blog post.
*/
public function transactions()
{
return $this->hasMany('App\Transactions', 'CustomerID', 'ID');
}
}
and
class Transaction extends Model
{
/**
* Get the comments for the blog post.
*/
public function customer()
{
return $this->belongsTo('App\Customer', 'CustomerID', 'ID');
}
}
Spend some time in the Eloquent Relationships Documentation. It's really important to understand them if you want to be a Laravel developer.
In order to display the relationship in the CRUD, you can then use Backpack's select column type to display it in the table view and select or select2 field types to display it in the add/edit views. Read the CRUD Example Entity to better understand how that works.
First of all when you are creating migrations for both tables, table which contain Foreign Key (FK) must have field like this:
public function up(){
$table->increments('id');
$table->integer('customerID')->unsigned();
}
After that you are need to call next command into console
php artisan migrate
Next is going next commands:
php arisan backpack:crud customers
php arisan backpack:crud transactions
After that you need to define functions in models which returns values from other tables. Customer models need to have next function
public function transactions(){
return $this->hasMany('Transaction');
}
Transaction model must have next function
public function customer() {
return $this->belongsTo('Customer');
}
Next you must add CRUD field in Customer controller to display
transactions in select box.
$this->crud->addField([
'label' => 'Transactions', // Label for HTML form field
'type' => 'select2', // HTML element which displaying transactions
'name' => 'customerID', // Table column which is FK for Customer table
'entity'=> 'customer', // Function (method) in Customer model which return transactions
'attribute' => 'ID', // Column which user see in select box
'model' => 'Transaction' // Model which contain FK
]);
Hope this helps :)
After you built onetomany relationship with transaction, you can get the results.
$customer=Customer::where(['id'=>'123456'])->with('transaction')
->first();
print_r($customer->Name); // gives the customer name
foreach($customer->transaction as $cid)
{
print_r($cid->CustomerID); // gives the customer id
}
Laravel Relationships Documentation is always helpful. Go through it.
I have just got accustomed to yii2
Am creating a multistep form in yii2 which involves three related tables
tables
User table:has (idno(primary key), firstname, secondname and lastname)
Education table has: (idno(foreign key), institution_name, year_completed, grade)
Contacts table has: (idno(f.key),contact)
Models and relationships
Relation btwn user and contacts
public function getContacs()
{
return $this->hasMany(Contacts::className(), ['idno' => 'idno']);
}
public function getUser()
{
return $this->hasOne(User::className(), ['idno' => 'idno']);
}
Relationship btwn user and education
public function getEducation()
{
return $this->hasMany(Education::className(), ['idno' => 'idno']);
}
public function getUser()
{
return $this->hasOne(User::className(), ['idno' => 'idno']);
}
How can I create a multistep form that is in the first step a user fills in the his details on the next step on education details the form automatically picks the userid and passes it to the education details until finishing
you need to maintain a flag for each step , for example for first_step = 0 , second_step = 0 third_step = 0 . if first step is filled out change the first_step = 1 do same for other , this fields should be present in user table or you can maintain another table using user id as foreign key . if first_step = 1 then when you login again and page will open where flag = 0 mean it will open the second step directly. This is a basic concept so you can get idea , There are other ways also .
I am new to laravel. I am working on a laravel 5 app and I am stuck here. I have 2 models as such:
class Message extends Eloquent{
public function user()
{
return $this->belongsTo('App\User', 'from');
}
public function users()
{
return $this->belongsToMany('App\User')->withPivot('status');
}
}
class User extends Eloquent {
public function messages()
{
return $this->hasMany('App\Message', 'from');
}
public function receive_messages() {
return $this->belongsToMany('App\Message')->withPivot('status');
}
}
There exist a many-to-many relationship between Message and User giving me a pivot table as such:
Table Name: message_user
Colums:
message_id
user_id
status
I have an SQL query as such:
update message_user
set status = 1
where user_id = 4 and message_id in (select id from messages where message_id = 123)
How can I translate this query to the laravel equivalent?
The code below solved my problem:
$messages = Message::where('message_id', $id)->get();
foreach($messages as $message)
$message->users()->updateExistingPivot($user, array('status' => 1), false);
You may use one of these two functions, sync() attach() and the difference in a nutshell is that Sync will get array as its first argument and sync it with pivot table (remove and add the passed keys in your array) which means if you got 3,2,1 as valued within your junction table, and passed sync with values of, 3,4,2, sync automatically will remove value 1 and add the value 4 for you. where Attach will take single ID value
The GIST: if you want to add extra values to your junction table, pass it as the second argument to sync() like so:
$message = Messages::find(123);
$user = User::find(4);
// using attach() for single message
$user->message()->attach($message->id, [
'status' => 1
]);
$message2 = Messages::find(456); // for testing
// using sync() for multiple messages
$user->message()->sync([
$message->id => [
'status' => 1
],
$message2->id => [
'status' => 1
],
]);
Here is a small example of how to update the pivot table column
$query = Classes::query();
$query = $query->with('trainees')
->where('user_id', Auth::id())
->find($input['classId']);
foreach ($query->trainees as $trainee) {
$trainee->pivot->status = 1 //your column;
$trainee->pivot->save();
}
Note: make sure your relation data must in an array
Hope its help you :)
happy coding
Laravel 5.8
First, allow your pivot columns to be searchable by chaining the withPivot method to your belongsToMany
Copied from my own code to save time
// I have 3 columns in my Pivot table which I use in a many-to-many and one-to-many-through scenarios
$task = $user->goalobjectives()->where(['goal_objective_id'=>$goal_objective_id,'goal_obj_add_id'=>$goal_obj_add_id])->first(); //get the first record
$task->pivot->goal_objective_id = $new; //change your col to a new value
$task->pivot->save(); //save
The caveat is that your pivot table needs to have a primary 'id' key.
If you don't want that then you can try the following:
$tasks=$user->posts()->where(['posts_id'=>$posts_id,'expires'=>true])->get()->pluck('id'); // get a collection of your pivot table data tied to this user
$key=join(",",array_keys($tasks->toArray(),$valueYouWantToRemove));
$tasks->splice($key,1,$newValueYouWantToInsert);
$c = array_fill(0,$tasks->count(),['expires'=>true]); //make an array containing your pivot data
$newArray=$tasks->combine($c) //combine the 2 arrays as keys and values
$user->posts()->sync($newArray); //your pivot table now contains only the values you want
4th July Update Update to above snippet.
//Ideally, you should do a check see if this user is new
//and if he already has data saved in the junction table
//or are we working with a brand new user
$count = $user->goalobjectives->where('pivot.goal_obj_add_id',$request->record)->count();
//if true, we retrieve all the ids in the junction table
//where the additional pivot column matches that which we want to update
if($count) {
$ids = $user->goalobjectives->where('pivot.goal_obj_add_id',$request->record)->pluck('id');
//convert to array
$exists = $ids->toArray();
//if user exists and both saved and input data are exactly the same
//there is no need
//to update and we redirect user back
if(array_sum($inputArray) == array_sum($exists)) {
//redirect user back
}
//else we update junction table with a private function
//called 'attachToUser'
$res = $this->attachToUser($user, $inputArray, $ids, $request->record);
}//end if
elseif(!$count) {
//we are working with a new user
//we build an array. The third pivot column must have equal rows as
//user input array
$fill = array_fill(0,count($inputArray),['goal_obj_add_id'=>$request->record]);
//combine third pivot column with user input
$new = array_combine($inputArray,$fill);
//junction table updated with 'user_id','goal_objective_id','goal_obj_add_id'
$res = $user->goalobjectives()->attach($new);
//redirect user if success
}
//our private function which takes care of updating the pivot table
private function attachToUser(User $user, $userData, $storedData, $record) {
//find the saved data which must not be deleted using intersect method
$intersect = $storedData->intersect($userData);
if($intersect->count()) {
//we reject any data from the user input that already exists in the database
$extra = collect($userData)->reject(function($value,$key)use($intersect){
return in_array($value,$intersect->toArray());
});
//merge the old and new data
$merge = $intersect->merge($extra);
//same as above we build a new input array
$recArray = array_fill(0,$merge->count(),['goal_obj_add_id'=>$record]);
//same as above, combine them and form a new array
$new = $merge->combine($recArray);
//our new array now contains old data that was originally saved
//so we must remove old data linked to this user
// and the pivot record to prevent duplicates
$storedArray = $storedData->toArray();
$user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->detach($storedArray);
//this will save the new array without detaching
//other data previously saved by this user
$res = $user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->syncWithoutDetaching($new);
}//end if
//we are not working with a new user
//but input array is totally different from saved data
//meaning its new data
elseif(!$intersect->count()) {
$recArray = array_fill(0,count($userData),['goal_obj_add_id'=>$record]);
$new = $storedData->combine($recArray);
$res = $user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->syncWithoutDetaching($new);
}
//none of the above we return false
return !!$res;
}//end attachToUser function
This will work for pivot table which doesn't have a primary auto increment id. without a auto increment id, user cannot update,insert,delete any row in the pivot table by accessing it directly.
For Updating your pivot table you can use updateExistingPivot method.