I have an Organisation model and a Contract model
Here it is
class Contract extends Model {
public function organisation() {
return $this->belongsTo(Organisation::class, 'organisation_id', 'id')->where('is_self',1);
}
}
How can I make Laravel Nova see only organisations which are is_self=1 in BelongsTo Field. Is there functionality to inject clauses to query, which forms select here?
That's how I call BelongsTo
BelongsTo::make('Organisation', 'organisation', Organisation::class)
->rules('required', 'exists:organisations,id'),
Yes, you can make use of „Relatable Filtering“: https://nova.laravel.com/docs/2.0/resources/authorization.html#relatable-filtering.
You also don't need to stick to the BelongsTo field. Maybe a Select field fits your case?
Select::make('is_self', 'organisation_id')
->options(function() {
Organisation::whereIsSelf(1)->pluck('name', 'id')->toArray();
})
This code is untested, but I'm using similar selects in my Nova apps without problems.
Related
While I'm experienced with Java, I am a Grails newbie but I am trying to get into it. I set up a basic "School" application containing the following domains:
Student
Class
Attendance
Both the 'Student' and 'Class' domains are scaffolded. Now, I want to create the 'Attendance' domain, and I'm going to need a controller with a custom view. I can do that, I'm just looking to understand (at a high level) the best way to set up the view (let's call it 'attendance.gsp').
The view will contain a dropdown box to select a class. Once a class is selected, I want to populate a table. The first column will contain the list of students in the class, and the second column will contain "Attended?" checkboxes.
I think that I can at least get that far.
I am wondering how to go about relating the checkbox value to the student. Since this class is not scaffolded, no attendance column has been created in the database. Do I need to have anything defined in the Attendance domain? How might you go about doing this? Can anyone recommend a particular example online that is doing something similar?
Thanks!
Something like this:
class Class {
...
static hasMany = [sessionsAttendance: Attendance]
}
class Student {
....
}
class Attendance {
static hasMany = [studentsAttended: Student]
}
I have a following domain class:
class User {
static hasMany = [roles:String]
}
I would like to find every user which has role ROLE_ADMIN. Is there any possibility to do that with dynamic finders? user.findAllByRoles('ROLE_ADMIN') seems to give me an error.
UPDATE: it is quite easy to query association where Class A has a list of class B instances and both A and B are domain classes. But here class A is a domain class and class B is a simple Java string.
The code for querying association containing list of another domain objects would look like this:
`User.findAll { roles { role_name=='ROLE_ADMIN' } }`
What i am looking for is a way to specify the value of a String, for example:
`User.findAll { roles {THIS_VALUE=='ROLE_ADMIN' }}`
UPDATE 2: as far as i have found it is not possible to use criteria with collections of primitive types. It is possible to use HQL though:
User.findAll("from User a where :roles in elements(roles)",[roles:'ROLE_ADMIN'])
However it is not as usefull as a findAll or where query. I cannot chain findAll methods so defining other methods that for example: get ROLE_ADMIN users with username like 'xxx' requires rewriting whole HQL query. Maybe it is possible to express above HQL condition in form of a where expression?
Maybe you can do something like:
if you have already a user list (userList)
def list = userList.findAll { user -> user.roles =~ 'ROLE_ADMIN' }
Hope this help!
I have the same problem How to find records by value in their association property via DetachedCriteria
I made some investigation and, as I found, it's impossible.
The GORM DSL itself doesn't have any method to check that value contains in association.
It conains oly that criterias that are in SQL: AND, OR, IN.
But! You can join association as table in criteria Querying by Association Redux
Imagine i have the following (this is a search mechanism for my website)
class Supermarket {
String sp_name
String sp_street
}
class Products {
String p_name
String p_price
}
class products_supermarket{
Supermarket sp
Products pro
}
Now i want to create a criteria:
def c = Supermarket.createCriteria()
def results = c.list {
like("sp_street", params.street)
and {
************ ... params.product
}
maxResults(10)
}
Where i have the * i want to be able to find products whithin that supermaked searching on products_supermarket class. How to do that?
PS. If criteria works as an each() method, iterating over all supermarkets, i could use an if-else statment to search for products, and if found i could use: idEq(it), where it is the supermarket id. This way i would make it. My problem is, i dont know how to get current'sm supermarket id. Any help?
and is applied to criterias inside it, so there's no point applying it to a single statement. Top-level criterias are and-ed by defauilt.
You usually better go without connector class, just by using hasMany: Supermarket and hasMany: Product in domain classes. Connector table will be auto-generated by Hibernate.
If you stick with ProductsSupermarket connector class, do add belongsTo: Supermarket and belongsTo: Product to it class, and add 'hasMany: ProductsSupermarket' to other two, or you're losing Grails' GORM advantage.
There's a section "Querying Associations" in the doc.
Object's id is as simple as that: mySupermarket.id, or mySupermarket.ident() if key field is named differently. id field is auto-added to class and table by default.
So the query is:
List<Supermarket> results = Supermarket.withCriteria {
like("sp_street", params.street)
productSupermarket {
product {
idEq(params.product)
}
// or just eq('product', someProduct)
}
************ ... params.product
maxResults(10)
}
As the title suggests I have two models Products And Orders which are actually two table in my database and I have used a LINQ to SQL class to create there models. Now I wan to create a model named "OrderDetails" which will have properties from both the model like product name and id from product and Order number from orders something like this. An then I want to create a view from this custom model and from which I want to add "CRUD" operation. What should be my approach. And in many scenarios I may have to use data from more than 4 models. Please help. I'm wondering helplessly and I have only two days experience in ASP.NET MVC.
I'd go this route:
namespace Models
{
public class OrderDetails
{
private Products _products;
private Order _order;
public OrderDetails(Order order, Products products)
{
_order = order;
_products = products;
}
// now expose whatever fields or logic you need.
// for instance:
public Customer OrderCustomer()
{
return order.Customer();
}
}
}
However, before you go around making all of these new models, are you sure you need them? Can you simply use two instances, either passed around separately or in a Tuple? You can get some useful abstraction here, but if you don't need it, keep it simple.
Linq to SQL does not support custom mapping to the extent that you're looking to do. What you'll want to look at is a full ORM. I highly recommend nHibernate, but Entity Framework, if you must, will do what you want.
Let's say I have two tables employee and salary with a 1:N relationship (one salary can be associated with many employees).
In plain SQL the tables would be joined with:
SELECT e.id, e.name, s.salary FROM employee e, salary s WHERE s.id = e.salary_id AND e.id = 12345;
Assuming the following GORM-powered domain class how do I map the legacy database structure to the class?
class Employee {
String name
int salary
}
Clarification #1: I want only one domain class containing data from both tables. Adding another class is hence not an option.
Clarification #2: The question I'm trying to find an answer to is simply "how do I map two tables to one class using Grails/GORM"? If you believe that it is impossible to do so, then please state that clearly in your answer rather than trying to restate the question.
IMO it is not possible with plain Grails/GORM to join multiple tables and map them to one Domain class. As a workaround you could use a legacy XML hibernate mapping and leverage the join feature to achieve your desired goal. Of course you would loose a lot of the GORM goodies.
Your SQL example indicates there are two tables, Employee and Salary. This should also be reflected in your classes. So instead of one, you need two classes. The GORM mapping would then look like this.
class Employee {
String name
Salary salary
}
class Salary {
static hasMany = [ employees : Employee ]
int salary
}
See http://www.grails.org/GORM+-+Defining+relationships
You could, instead of having salary and name as properties, have them as get* methods that actually run a query on both these tables.
granted, that isnt the grails way, and its strongly recommended that you do follow the grails way.
I don't fully understand the limitation on not being able to add another class if there are 2 tables in the database, but if you're looking to have a unified interface, would it work to delegate the methods to the Salary class?
Something like:
class Salary {
int amount
}
class Employee {
Salary _salary
String name
String toString() { name }
public Integer getSalary() {
return _salary?.amount
}
public void setSalary(Integer amount) {
// not quite sure of your business logic here, this is a guess
_salary = Salary.findByAmount(amount)
if (!_salary) {
_salary = new Salary(amount: amount)
_salary.save()
}
}
}
def e = new Employee(name:"willy loman", salary: 100)
e.save()
assert e.salary == 100
It's also possible that you might be able to make what you're asking for work with a custom hibernate mapping file, but I'm not familiar enough with contorting hibernate in that manner to say for sure.
See the Custom User Type section of this page.