I would like to make a second request with the id obtained in the previous request.
I have 3 tables:
organization
users
follow_organization (relationship table)
I would like to obtain the number of occurrences in the follow_organization table by passing the id of the organization previously obtained.
$organization = DB::table('organizations')->where('name', $name)->first();
$followers = DB::table('follow_organizations')->where('organization_id', $organization)->count();
Unfortunately, I get the following error message:
Object of class stdClass could not be converted to string.
I understood the problem, I pass a table while the query builder waits for a string.
But I can't find the solution to this problem despite the tons of answers I've read on the internet.
Currently you are passing the whole organization object into the where clause, but you only need the id.
To access the id property you can use $organization->id
DB::table('follow_organizations')->where('organization_id', $organization->id)->count();
Setting and Getting Property Values
Related
I found that laravel 'pluck' return an plain array and 'select' return an object. Can anyone explain it to me have any other different between two this?
thank you.
Pluck is a Laravel Collections method used to extract certain values from the collection. You might often want to extract certain data from the collection i.e Eloquent collection.
While Select is a normal selection of either multi or specific columns. They are
By using Pluck you only ask to return necessary fields, but with get you will pull all columns. Also select does the same & the difference here is between the returning result. Using pluck cause returning the final result as an array with pair of given arguments, but select return an array (or object) which every single child contain one row.
$name = DB::table('users')->where('name', 'John')->pluck('name');
Select
EX : DB::table('users')->select('id', 'name', 'email)
Select is a method sent to the database that Laravel will translate as
SELECT id, name, email FROM users
This will select the data of the columns you asked and nothing else. It allows you to be more efficient with your request by only asking the required data. Take the example above and image that the user is a Facebook user. It has a ton of data on it, plus relations to other tables. If you just want to display the name, email and a link to the user profile, doing this request!
For more info and knowing more about the expected response visit : https://laravel.com/docs/9.x/queries#select-statements
Pluck
EX:
$users = DB::table('users')->where('roles', '=', 'admin')
$emails = $users->pluck('email')
The Pluck method retrieves the values in a collection that you already got from the Database and that is now a Laravel Collection. This allows you to create an array of the plucked data, but will not improve the performance of your request, as in the Example above, the $users would hold all data of all the admin users.
Since it does not improve performance, what good is it then ?
The pluck would be useful for example to separate some datas in different variables depending on where. You might need the users data for some stuffs, but also want to display a quick list of all emails together.
For more info about the pluck method and understand how to create a keyed array from a second column, visit the docs here: https://laravel.com/docs/9.x/collections#method-pluck
Pluck function normally used to pull a single column from the collection or with 2 columns as key, value pairs, which is always be a single dimension array.
Select will return all of the columns you specified for an entity in a 2 dimensional array, like array of selected values in an array.
Note: Pluck function is a collection function which happens after the data is fetched. Select is a query builder function that builds query to perform in the database server.
Actually select is used inside DB queries, which can affect the performance by limiting the pulled columns. However, Pluck is Laravel Collection's method, so you can use pluck after you pull the data from DB.
I am trying to see if a user id is contained in a json field in my laravel collection. In my postgresql database I have a user_id field which contains a list of integers that pertain to my user model and table. I am aware in eloquent I can use the whereJsonContains method but I am not finding an equivalent method for a collection. How can I go about searching this user_id column for a specific user id?
check the manual for the aviable methods list:
https://laravel.com/docs/8.x/collections#available-methods
In your case i guess that is about:
where
All,
I am building a Power Flow. I am returning an object that has a relationship to another entity.
I want to get some values from the related entity.
I am attemping to use the "Get Record" connector. The returning object returns just the logicalEntityName (in this case "opportunities") but Get Record wants an Entity Name that is the Schema Name ("Working Opportunities").
Big Question: What's the secret to use CDS to get information from a related record in another object?
Little Question: How do I do get the Schema Name?
The logical name will be the same as schema name except some casing difference, ie schema name will have camel casing (first letter of first/second word with capitals, you can notice it clearly in custom entity which will have publisher prefix like new_entityname) and logical name will have pascal casing (all lower case).
You can find the details in XrmToolBox metadata browser or in Solution.
In the below snip, (Logical) Name = Opportunity and Schema Name = Opportunity, also Display Name can be anything and can be changed anytime.
Regarding the related entities, you should use List Records: GetItems_V2 and you can use filter by passing parent record to get related child records. Read more
Could you please share flow screenshot and response to help you with your requirement?
As suggested by Arun you could use List Record and filter query to pass parent record id which will be available from dynamic content.
see below link.
https://crmkeeper.com/2019/08/31/cds-list-records-filter-query-using-flow/
Please mark my answer verified if i were helpful
I'm new to Spring JPA.
I has two questions about Example and ExampleMatcher API.
Are there any ways to ignore all paths except some paths which I set matchers. Or are there any ways to ignore all paths if Example object's path has null value. It is quite annoying to set all path names like below:
ExampleMatcher<Product> matcher =ExampleMatcher.matching().ignorePaths("field_a", "field_b");
How to match joined column using Example. For example. Product entity has User entity field as #ManyToOne relation. User entity has several fields but my Example object has User field only filled with userId field. In this case I want to find product data which has user_id foreign key column matching userId field value included in user object included in product Example object.
Sorry for poor English... Actually this is my first question at Stack Overflow.
Thanks for attention.
I'm looking forward for great answers.
Spring Data by default will ignore null values in properties. So you need not ignore paths for null values. We could also use the withIgnoreNullValues() (docs) method call on the matcher to explicitly tell it to ignore null values.
Note primitive values(int,double,etc) if not set will still be used since primitives can't have nulls and use default values instead so you should ignore the primitive properties if not used for matching.
For your second question, you could do something like the below
Product product = new Product();
User user = new User();
user.setId(5); // Id to be matched
product.setUser(user); // Associate User object with Product
Example<Product> example = Example.of(product,matcher);
I am using CodeFirst EntityFramework. I have a IQueryable<User> Entities that are returned using context.Users; where context is DbContext of EntityFramework. From this list I have to choose those whose Id is contained in an array of Ids (long). Id is primary key of User entity. I have tried the following but getting compiler error.
IQueryable<User> users = GetQueryableUsers();
long [] ids = GetSelectedIds(); //array of long representing Ids key of User entities
users.Intersect(ids); // compilation error
users.Where(user => ids.Contains(user.Id)); //compilation error
Compilation error is (no definition found for Intersect/Contains)
Note: System.Linq is already imported.
Make sure you are referencing System.Linq
e.g. using System.Linq
Then user.Id must be of type long. You've stated in comments that it is long? because you believed that is how you needed to use the primary key. The solution is to use long and make use of the autogenerate id options of the entity framework.
Alternatively a more general case for non primary keys that could be null would be to use the contains option with the value or default operator.
users.Where(user=>ids.Contains(user.id??0));
Your problem is you can't intersect users on long ids. Intersect can only be used on IEnumerables of the same type.
You should use user.Id.GetValueOrDefault() because your ID is long? instead of long.