Laravel relationship count [closed] - php

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I know title seems a little complicated, but what I want is simple
Users (users) have comments (comments)
To fetch users' comments, I'm using a hasMany relationship
I'm creating a filter system, so I only want to fetch users who have posted at least 1 comment

Use has():
$users = User::has('comments')->get();
Or eager load the users comment models:
$users = User::has('comments')->with('comments')->get();
Source: http://laravel.com/docs/eloquent#querying-relations

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store users in one table or multiple table Laravel [closed]

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we are creating an e-learning website with Laravel, and we have multiple users (student, instructor, admin) should we store them in one table (users) or each user with own table.
I want to know if there is a convention
There is no set in stone rule, it is totally up to you. But from what I see in most Laravel projects, and what I do in my projects as well, to make it easier to read/troubleshoot you use a single "users" table and make a "profile" or "profile_type" column to determine which one are they attached to.

Is creating an eloqunt relationship that important? [closed]

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Creating eloquent relationhip in laravel
I tried making an eloquent relationship and tried using controller with no eloquent relationship and i want to know the difference between using eloquent and not using elequent.

How To Retrieve Data Like TripAdvisor [closed]

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So i have this school project that assigned us to make a tripadvisor like website, but I have a hard time to find how to retrieve the places data, the photos and everything. Can anybody help me with that?
I want to retrieve places, restaurants data

Can I write where condition on any column of table in DynamoDB [closed]

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I'm able to write where condition only on primary key but not on the other attributes in DynamoDB.
Is it possible to query data on any column in DynamoDB? If yes how ?
I'm using PHP.
For other attributes you use SCAN, not query and filter it by 'FilterExpression'. Here is how to do it in PHP: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GettingStarted.PHP.04.html

retrieving a row using laravel eloquent ORM [closed]

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I want to get back single row where a user just added a new car. I am trying to join all tables using the eloquent ORM. here is a erd of my database I am new to laravel, and I would want to know how I would be able to achieve this. Thanks in advance.
What have you tried already?
Assuming you want to get latest added Car model, you could do
$latestCar = Car::orderBy('id', 'DESC')->first();
If you have nothing yet, you could watch Laracasts about how to build a database and set up Models.

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