I've the following tables
Cities (City model)
+----+-------+
| id | name |
+----+-------+
| 1 | tokyo |
+----+-------+
events (Event model)
+----+--------------------+---------+
| id | title | city_id |
+----+--------------------+---------+
| 1 | Biggest event ever | 1 |
+----+--------------------+---------+
event_user_applications (EventUserApplication model)
+----+----------+---------+
| id | event_id | user_id |
+----+----------+---------+
| 1 | 1 | 1 |
+----+----------+---------+
How do I get the city on EventUserApplication model.
I tried both of this in the EventUserApplication
public function city()
{
// return $this->belongsTo('App\Model\City', 'city_id')->using('App\Model\Event', 'event_id');
// return $this->hasOneThrough('App\Model\City', 'App\Model\Event', 'city_id', 'id');
}
Can't get any of this to work. Already spent hours. Please help. Thank you in advance.
I solved it with the help of my friend. This is what I did to get the city.
$applications = EventUserApplication::with(
'user:id,name,phone,email,date_of_birth',
'event:id,title,area_id,area_city_id',
'event.city' // nester eager loading
)->latest()->get();
In the Event model, I already had this
public function city()
{
return $this->belongsTo('App\Model\City', 'area_city_id');
}
It's the Nester Eager Loading which was needed.
In that case you can use hasOnThrough relationship EventUserApplication has One city Through Event.
Edit:The 5th parameter should be event_id and there should be another parameter which is id (foreign key of event table)
Related
i have 4 database tables :
Broadcasters
| id | public_name | .... |
Articles
| id | title| .... |
Comments
| id | user_id| article_id | .... |
users
| id | login| .... |
i would like to list all broadcasters with number of article of each one (broadcaster) and the totale comments of all article ( of the broadcaster ). below my code that i make but it miss samething
Broadcaster::withCount(['articles'])
->withCount(['articles'=> function($query){
return $query->withCount("comments");
}])
->get();
i checked in stackoverflow forum but didnot get any answer of my question , please help and thx
You can declare a relation hasManyThrough in Broadcasters class:
function comments()
{
return $this->hasManyThrough('App\Comment', 'App\Articles');
}
So you can
Broadcaster::withCount(['articles','comments'])
Laravel Doc
I want to filter product using their attributes using below query
return Product::with('attributes')
->whereHas('attributes', function ($query) use ($attribute_id_array,$attribute_value_array){
for($k=0;$k<count($attribute_id_array);$k++)
{
$attr_id=$attribute_id_array[$k];
$attr_val=$attribute_value_array[$k];
$query->where(function($q) use ($attr_id, $attr_val) {
$q->where('attribute_id', $attr_id)->where('value', $attr_val);
});
}
})->paginate(10);
I want to check if attributes of a product exist then filter it using the loop to filter out products that are in attributes_value & attributes_id array which does not match but presently this query is not filtering through attributes.
Here are the structure of tables and relations
Product Table :
|id | Title | Price|
-------------------------
|1 | Title 1 | 5000|
|2 | Product 2 | 7000|
and the other is
product_attribute table:
|id | product_id | attribute_id | attribute_name | value|
---------------------------------------------------------
|1 | 1 | 5 | Color | Red |
|2 | 1 | 6 | Size | XL |
|3 | 2 | 5 | Color | Green|
Product and Product attribute is related with following relation (In the product model):
public function attributes()
{
return $this->hasMany(ProductsAttribute::class, 'product_id ');
}
I believe you need to validate each attribute and value combinations to be present for the resultant products, so you can put your whereHas clause inside the loop as
$products = Product::with('attributes');
for($k=0; $k<count($attribute_id_array); $k++)
{
$attr_id=$attribute_id_array[$k];
$attr_val=$attribute_value_array[$k];
$products->whereHas('attributes', function ($query) use ($attr_id,$attr_val){
$query->where('attribute_id', $attr_id)->where('value', $attr_val);
});
}
$products = $products->paginate(10);
I'm wondering if its possible to set the operator when using a HasMany relationship in Laravel 4.2.
I'm working with a users table and an email log table. The log table has a userID stored in serialised format (as there may be more than one userID stored within the log).
Users table
+---------+
| user_ID |
+---------+
| 1 |
| 2 |
+---------+
emailLog Table
+----+--------------------+
| ID | user_ID |
+----+--------------------+
| 1 | a:1:{i:0;s:1:"2";} |
| 2 | a:1:{i:0;s:1:"1";} |
+----+--------------------+
Am I able to use a hasMany relation with a 'Like' operator rather than an equals operator to return the correct email log ID? Would the statement be written something like the below?
return $this->hasMany('emailLog', 'user_ID', '%user_ID%', 'LIKE');
The proper way to return join table with a where clause would be:
return $this->hasMany('emailLog','user_id')->where('user_id', 'LIKE', '%user_id%');
I found a way to do something similar
class User extends Model
{
public function emailLogs()
{
// old code
// return $this->hasMany(EmailLogs::class, 'user_ID');
// Replace HasMany by like query
return EmailLogs::where('user_ID', 'LIKE', "%{$this->user_ID}%");
}
}
I have the following three tables but I don't know how to build a relation between the category and the other data type, in this case 'Page':
posts:
post_id | title | slug
1 | Test | test
2 | Another test | another test
catgory_map:
id | category_id | referrer_id | category_map_type
1 | 2 | 1 | Post
2 | 3 | 2 | Post
3 | 2 | 9 | Page
category
id | name
1 | Laravel
2 | Zend2
3 | Phalcon
So whenever I read a Category I like to be able to do something like this
foreach($category->destinations) ...
I have tried until now with hasManyThrough but it didn't work.
What you have is a many-to-many relation with some additional filtering on the relationship (for the category_map_type). Try this:
Post model
public function categories(){
return $this->belongsToMany('Category', 'category_map', 'referrer_id')
->where('category_map_type', 'Post');
}
Category model
public function posts(){
return $this->belongsToMany('Post', 'category_map', 'category_id', 'referrer_id')
->where('category_map_type', 'Post');
}
Usage
$category = Category::find(1);
foreach($category->posts as $post){
// ...
}
(And the same goes for Post)
You might also want to look into polymorphic many-to-many relations
I have two tables - contacts and visits:
Contacts Table
id | name
----- | -------
1 | Joe
2 | Sally
Visits Table
id | contact_id | pathname | referrer
----- | ------- | ------- | -------
1 | 1 | about | google
2 | 1 | pricing | null
3 | 1 | signup | null
4 | 2 | about | null
5 | 2 | signup | null
Using eloquent, I would like to retrieve all contacts that have a both a pathname = 'signup' AND a referrer = 'google'.
What I've got so far is:
Contact::whereHas('visits', function($query) {
$query->where('pathname','=','signup');
})
->orWhereHas('visits', function($query) {
$query->where('referrer','=','google');
})
->get();
Which properly retrieves all contacts that have visited either the pricing OR signup page.
However, this example would also retrieve Sally (from the example table above), since she visited signup, but was not referred by google. I need a way to only retrieve Joe, who was both referred by google and visited pricing.
Any ideas? Thanks in advance!
You can use:
Contact::whereHas('visits', function($query) {
$query->where('pathname','=','signup');
})
->whereHas('visits', function($query) {
$query->where('referrer','=','google');
})
->get();
A refined version of the code above:
Contact::whereHas('visits', function($query) {
$query->where('pathname','signup')->where('referrer','google');
})->get();
Several noteworthy points:
You can chain where() clauses within a closure.
The default operator for a where clause is =, so you can omit it.
Use multiple whereHas() clauses, when accessing multiple related models.