I'm upgrading a big project form Yii1 to Yii2. I'm having some problems regarding to ORM.
I have several relation declared in the following fashion(basically a copy-paste from the guidebook):
class Order extends \yii\db\ActiveRecord {
/* other code */
public function getAffiliate()
{
return $this->hasOne(Affiliate::className(), ['id_affiliate' => 'affiliate_id']);
}
Whenever I try to echo or w/e $order->affiliate->name; I get the following error:
yii\base\ErrorException: Trying to get property of non-object
I've got no experience with Yii1 what so ever. Something weird about this project is the database. All tables start with yii_tablename and id's are: id_tablename. Was that normal for Yii1 and could this be causing the issue above?
Edit: When I execute the function like so: $order->getAffilate() it returns an ActiveQuery WITHOUT the data from the affiliate.
When I execute the following:
$order->getBillingAddress()->one();
I get a weird error:
Getting unknown property: app\models\Order::billing
return $this->hasOne(Affiliate::className(), ['id_affiliate' => 'affiliate_id']);
It's mean that when you call $order->affiliate yii2 will find in Affiliate table on id_affiliate field current Order affiliate_id value and selected one value.
Check that you have right field names and database have right data.
When you call $order->affiliate you will get Affiliate object. But if you call $order->getAffiliate() you will get ActiveQuery object.
I found a solution. One which I don't really like though, but it does the job. Was reading this thread: link.
Kartik V
The problem is clearly in uniqueness in naming your relation and your model attribute. In your User model, you have an attribute named role and you also have a relation getter named getRole.
So I changed the name of the getter like so:
public function getOrderAffiliate()
{
return $this->hasOne(Affiliate::className(), ['id_affiliate' => 'affiliate_id']);
}
And that fixed the issue. Never had this issue before and wonder why this happened though.
Related
I am trying to use wasChanged and wasRecentlyCreated of models in laravel project but both of them are false in the below code
$saved=$project->accessInfo()->updateOrCreate(['type'=>$request->type],['value'=>$data]);
dd($project->accessInfo[0]->wasChanged(),$project->accessInfo[0]->wasRecentlyCreated,$project->wasRecentlyCreated,$project->wasChanged());
//here is my relation in Project model
public function accessInfo()
{
return $this->hasMany('Modules\Project\Models\ProjectAccessInfo', 'project_id');
}
also below code returns error
dd($project->accessInfo->wasChanged(),$project->accessInfo()->wasRecentlyCreated)
//No such method or attribute in both cases
//Call to undefined method Illuminate\\Database\\Eloquent\\Relations\\HasMany::wasChanged()
Thanks in advance for your help.
getChanges - Get the attributes that were changed.
getDirty - Get the attributes that have been changed since last sync.
When you want to know if the model has been edited since it was queried from the database, or isn't saved at all, then you use the ->isDirty() function.
I am working on a project which requires me to get all the list of all information from a table --Just like in a blog, i used the all() method to do this but when i try to get the method i declared in my Model i get an error, saying
the collection instance does not exists
But when i use The
Model::find($id)->relationship()->name;
it works fine. Is there any way to load all relationship with the all() function in laravel.
Thanks for your help..
When you perform Model::find($id)->relationship(); you are actually accesing to the Dynamic relationships Properties
You need to convert it into a collection using Model::find($id)->relationship()->get();
Then you can perform any collection method to get the result you want. After doing this you can access to its attributes like this:
$model_varible = Model::find($id)->relationship()->get();
$model_variable = $model_variable->find($id)->name;
Let me know if this works for you.
You should use relationship without brackets to access the model:
Model::find($id)->relationship->name;
And use "with()" to populate the relationships:
Model::where('published', 1)->with('relationship')
So, going into the problem straight away. someone told me that we dont need to make a pivot table if we only want to have ids of the table. laravel can itself handle this situation. I dont know how this works. I have a table community and another table idea. relation is like this;
One community can contain many ideas and an idea can be found in many
communities.
Relation in idea Model:
public function community() {
return $this->belongsToMany('App\Community')->withTimestamps();
}
Relation in community Model:
public function idea() {
return $this->belongsToMany('App\idea');
}
Now i want to fetch all the records related to a single community to show on its page Let's say the community is Arts.
Here is Controller function:
public function showCommunities($id) {
$community = Community::findOrFail($id)->community()->get();
return view('publicPages.ideas_in_community', compact('community'));
}
When i attach ->community()->get() to the Community::findOrFail($id) Then it throws the error
SQLSTATE[42S02]: Base table or view not found laravel
Any help would be appreciated.
Edit:
Logically, this piece of code Community::findOrFail($id)->community()->get() should be like this Community::findOrFail($id)->idea()->get(). Now it is true but it has little issue. it throws an error
Fatal error: Class 'App\idea' not found
The way you define the many-to-many relation looks ok - I'd just call them communities() and ideas(), as they'll return a collection of objects, not a single object.
Make sure you use correct class names - I can see you refering to your model classes using different case - see App\Community and App\idea.
In order to find related models, Eloquent will look for matching rows in the pivot table - in your case it should be named community_idea and have 3 fields: community_id, idea_id and autoincrement primary key id.
With that in place, you should be able to get all ideas linked to given community with:
$ideas = Community::findOrFail($communityId)->ideas;
If you need communities linked to given idea, just do:
$communities = Idea::findOrFail($ideaId)->communities;
You can read more about how to use many-to-many relationships here: https://laravel.com/docs/5.1/eloquent-relationships#many-to-many
someone told me that we dont need to make a pivot table if we only want to have ids of the table
The above is not true (unless I've just misunderstood).
For a many-to-many (belongsToMany) their must be the two related table and then an intermediate (pivot) table. The intermediate table will contain the primary key for table 1 and the primary key for table 2.
In laravel, the convention for naming tables is plural for your main tables i.e. Community = 'communities' and Idea = 'ideas'. The pivot table name will be derived from the alphabetical order of the related model names i.e.
community_idea.
Now, if you don't want/can't to follow these conventions that's absolutely fine. For more information you can refer to the documentation: https://laravel.com/docs/5.2/eloquent-relationships#many-to-many
Once you're happy that you have the necessary tables with the necessary fields you can access the relationship by:
$ideas = $community->ideas()->get();
//or
$ideas = $community->ideas;
So you controller would look something like:
public function showCommunities($id)
{
$community = Community::findOrFail($id);
//The below isn't necessary as you're passing the Model to a view
// but it's good for self documentation
$community->load('ideas');
return view('publicPages.ideas_in_community', compact('community'));
}
Alternatively, you could add the ideas to the array of data passed to the view to be a bit more verbose:
public function showCommunities($id)
{
$community = Community::findOrFail($id);
$ideas = $community->ideas
return view('publicPages.ideas_in_community', compact('community', 'ideas));
}
Hope this helps!
UPDATE
I would imagine the reason that you're receiving the App\idea not found is because the model names don't match. It's good practice (and in certain environments essential) to Capitalise you class names so make sure of the following:
Your class name is Idea and it's file is called Idea.php
The class has it's namespace declared i.e. namespace App;
If you've added a new class and it's not being found you might need to run composer dump-autoload from the command line to update the autoloader.
As the title says I'm getting an error in Laravel 5.0 whilst trying to upgrade a Laravel 4.2 application.
The exact error message is: Call to undefined method Illuminate\Database\Query\Builder::orders()
I get the error when I try to fetch an authenticated users orders from a controller with the following line:
$this->user->orders()->orderBy('created_at', 'desc')->get()
A parent class sets $this->user as:
$this->user = Auth::user();
The user models relationship to orders is:
public function orders()
{
return $this->hasMany('App\Models\Order');
}
To confuse me even more $this->user->orders() returns the error I'm experiencing where as User::whereId($this->user->id)->first()->orders() returns the orders I was expecting.
When I dump both $this->user->orders() and User::whereId($this->user->id)->first()->orders() I get exactly the same output on screen.
Can anyone explain this and possibly point me towards the correct way to do this as my solution feels hacky and I'm sure there is a much cleaner way to accomplish what I'm trying to do.
Thanks
Apologies for answering my own question again, however I have found the proper soloution to my issue.
I had left the default User model in the App folder since installing Laravel 5, and this is the user model Laravel was using when I called Auth::user().
I needed to change config/auth.php to use my customised User Model and all is working as expected.
What i am trying to achieve is in my database i have a table named channel
i am using laravel's eloquent class to access these the properties from the table
The problem that i am facing is that
the table name is column and the column name is channel
so when accessing that property looks like this.
User::find(1)->channel->channel
How can i modify this to say
User::find(1)->channel->name
We cannot change the table name in the database.
Options i have thought of:
1)Create views for tables that need columns changed. Too messy...
2)Use column alias.... laravel documentation...sigh.. no clue how?
3)Use a property set with the create_function that would call this->channel
but i am pretty sure it won't work because laravel is using dynamic properties. and when it's fill out in the array im pretty sure it changes it to the name of the column.
I could in my belongs_to/hasOne/hasMany function change the property to the alias of the name i want to use so that later on i can change it. i dunno how well that would work..
any thoughts?
much appreciated
You could probably do it easily with Accessors / Mutators.
class Channel extends Eloquent {
public function getNameAttribute()
{
return $this->attributes['channel'];
}
public function setNameAttribute($value)
{
$this->attributes['channel'] = $value;
}
}
Reference
Laravel Accessors & Mutators