How to add multiple tables in one model without creating new model.
Is this standard practice to use same in laravel-lumen.
Or should I create 50 models to work on 50 tables.
You can't use multiple table in one model. Each model is written for a specific table.
https://laravel.com/docs/5.7/eloquent#introduction
Laravel uses Eloquent Object Relational Mapper. So each model is like a class representation having methods to do query underneath.
You have to create 50 models if you have 50 tables, or at-least for the tables you are using in your application. TO save time, go for plugins like this which would generate eloquent models based on your database structure. Also check another plugin if it helps.
It's not possible.
Each table should have their own model. But it isn't necessary all the times to make a model for each table. Investing some time on making model will help a lot in future work.
Related
I found many results how to create migration from a model, but is there any way to create a model from migrations?
Basically I want to give a table name, and if there is multiple migration files (one to create and others to update the previous states) the model could be updated.
Is there any solution for this?
I'm not sure that there's a good way to create a model directly from migrations, as it depends on what database you use as to the exact structure of your tables.
There seems to be a package which support generating the models from your database, however:
https://github.com/laracademy/generators
I am trying to build a simple Laravel application. My data model looks like the following:
ENTITIES:
Project, Requirements, ProjectRequirementStatus
RELATIONSHIPS:
A Project has many Requirements
A requirement belongs to many Projects as a "ProjectRequirement"
A "ProjectRequirement" has one ProjectRequirementStatus
A ProjectRequirementStatus belongs to many Projects
TABLES:
projects
requirements
project_requirements
project_requirement_statuses
MODELS:
Project, Requirements, ProjectRequirementStatus
My question IS:
Is it improper to create a model for a relationship class? In this case, I would need to create a ProjectRequirement model and define the relationship to the ProjectRequirementStatus class.
I'm confused because most of my pivot tables include IDs of the two tables they are joining in a Many to Many, and typically, no additional relationships.
Am I thinking about this the wrong way? Are there "best practices" in terms of when a Model is created versus when it's not needed?
Using the 3NF in Laravel, you do not have to make models for the relationships. Laravel provides the Eloquent ORM which will provide the relationships without having to make the pivot tables models.
The Eloquent ORM also provides you a way to access data on pivot tables. (Defining The Inverse Of The Relationship)
I have a doub about Laravel. The models are used to define the relationships between the models like hasMany, belongsTo, etc. Also the models are used to define the fillable fields. But he models are only for that? Because I already check some examples that it seems that some queries are executed in the models instead of the controller so Im not understanding if the models should also have the querying of the relationships or not. Can you give a help to understand better what is the correct use of models (what should be placed in the models)?
Its same way to execute queries on model or controller. Written queries in model make your controller more clean. We can write mutator, accessor or query scope in eloquent model. Correct me if I'm wrong.
Visit https://laravel.com/api/5.5/Illuminate/Database/Eloquent/Model.html
You can refer this documentation, it's quite helpful if you want to know deep basics and responsibilities about particular part in Laravel.
Models are mostly used to make an outlook of the data i.e what fields are going to be saved in the database and we also use it to associate the relationships with other related data as you already know but we also use it to alter the values that are either going in/out of the data base which you can check in the documentation in link bellow https://laravel.com/docs/5.6/eloquent-mutators
the main purpose is to divide the code between controller and model (were it best fit to be)
I've just started using Laravel and I'm coming from a different system using an existing database. In this system there are 2 users table, one stock with the CMS and one custom one.
I want to create an Eloquent model which retrieves data from both tables into one model. I know I can use the following to create a relationship.
$this->hasOne('App\SecondUser', 'id', 'id);
But this results in 2 sql queries, and I want to join results from 2 tables before returning the model, in one join statement. How do I do this?
That might be a bit more complicated that you would expect.
First of all you have to use \DB facade to join the two collections(arrays) and then recreate the Eloquent collection from these arrays using Collection's make method.
More info about the Collection class here
An easier way might be to join them using standard laravel relationships and user something like Model::user->with('relation')->get.
But this will still create 2 queries (still relatively fast).
We run two websites, A and B. Each website has its own table, _a_ and _b_ which have exactly the same structure. Yes, I know it's silly, we'll be rewriting them over the course of this year and next.
Using Laravel I need to create a model that will hold both tables content. I don't need any kind of UPDATE or INSERT functionality, I just need to SELECT and use with to access other model information.
Is this possible with Laravel 4.1? I can individually model each table, but that would make it difficult in the future.
I was able to fix this by making using the Repository pattern and merging the results of each model into the get and all functions.