No, the difference depends on where your foreign key is.

In your example, if `A` has a `b_id` column, then `A` `belongsTo` `B`.

If `B` has an `a_id` column, then `A` `hasOne` or `hasMany` `B` depending on how many `B` should have. 

Main difference is as below:

`belongsTo` and `belongsToMany` - you&#39;re telling Laravel that this table holds the foreign key that connects it to the other table.

`hasOne` and `hasMany` - you&#39;re telling Laravel that this table does not have the foreign key.

This is not about where the foreign key is.

The OP brought up 2 scenarios: A `hasOne` B, A `belongsTo` B

For a contextual example, let A = user and B = company.
&gt; You can say &quot;user owns(`hasOne`) a company&quot; and conversely you can say &quot;user worksAt(`belongsTo`) a company&quot;.

&gt; In both scenarios, `user` has a `company_id` field

Please let that sink in for a moment. Thus, discussing the location of foreign key is a non starter. The most apt answer can be found here: 
https://laravel.io/forum/04-20-2015-belongsto-vs-hasone

&gt; although it works, it is an incorrect description of the relationship.

To answer the OP&#39;s question: **No, you should not use them interchangeably**.

They are usually used in pairs

1. A `belongsTo` B, B `hasMany` A
2. B `belongsTo` A, A `hasMany` B
3. A `hasOne` B, B `hasMany` A &lt;- this will cause problems with both sides using `hasXXX`, see link.



&quot;BelongsTo&quot; goes in the table with the &quot;xxx_id&quot; column. 
Example:
A Country has Cities.
A City belongsTo a Country (country_id in cities table).
Another Example:
A Face hasOne Nose.
A Nose belongsTo a face (face_id in noses table).

The model who&#39;s table contains the foreign key will have belongsTo() in it while the model who&#39;s table contains that primary key to which that foreign key is referencing to will have hasOne()... its easy the model that has the foreign key will have belongsTo() and the one that doesn&#39;t contain the foreign Key in that relationship will have hasOne(). and no they are not interchangeable using the wrong method will always return null as a result.

The documentation says: 

http://pandas.pydata.org/pandas-docs/dev/basics.html 

&quot;Continuous values can be discretized using the cut (bins based on values) and qcut (bins based on sample quantiles) functions&quot;

Sounds very abstract to me... I can see the differences in the example below but **what does qcut (sample quantile) actually do/mean? When would you use qcut versus cut?**

Thanks.

    factors = np.random.randn(30)

    In [11]:
    pd.cut(factors, 5)
    Out[11]:
    [(-0.411, 0.575], (-0.411, 0.575], (-0.411, 0.575], (-0.411, 0.575], (0.575, 1.561], ..., (-0.411, 0.575], (-1.397, -0.411], (0.575, 1.561], (-2.388, -1.397], (-0.411, 0.575]]
    Length: 30
    Categories (5, object): [(-2.388, -1.397] &lt; (-1.397, -0.411] &lt; (-0.411, 0.575] &lt; (0.575, 1.561] &lt; (1.561, 2.547]]

    In [14]:
    pd.qcut(factors, 5)
    Out[14]:
    [(-0.348, 0.0899], (-0.348, 0.0899], (0.0899, 1.19], (0.0899, 1.19], (0.0899, 1.19], ..., (0.0899, 1.19], (-1.137, -0.348], (1.19, 2.547], [-2.383, -1.137], (-0.348, 0.0899]]
    Length: 30
    Categories (5, object): [[-2.383, -1.137] &lt; (-1.137, -0.348] &lt; (-0.348, 0.0899] &lt; (0.0899, 1.19] &lt; (1.19, 2.547]]`

What is the difference between pandas.qcut and pandas.cut?

I have a [Mocha][1] test file that looks like this:

    var expect = require(&#39;chai&#39;).expect
    var muting = require(&#39;../muting&#39;)
    
    describe(&#39;muting&#39;, function () {
      describe(&#39;init()&#39;, function () {
        it(&#39;should inject an object into twitter&#39;, function () {
          var twitter = &#39;twitter&#39;
          muting.init(twitter)
          expect(muting.twitter).to.equal(twitter)
        })
      })
    })

When I run `mocha` from the CLI, it runs the test successfully.

When I run `standard` (the executable for [JavaScript Standard Style][2]) I get errors on Mocha&#39;s framework functions like so:

    standard: Use JavaScript Standard Style (https://github.com/feross/standard)   
    c:\..\test\index.js:5:0: &#39;describe&#39; is not defined.  
    c:\..\test\index.js:6:2: &#39;describe&#39; is not defined.  
    c:\..\test\index.js:7:4: &#39;it&#39; is not defined.

What&#39;s the cleanest way to make Standard not complain about these functions?


  [1]: http://mochajs.org/
  [2]: https://github.com/feross/standard



JavaScript Standard Style does not recognize Mocha

Consider two models `A` and `B`

`A` -&gt; relatedTo `B` is a `one to one` relationship

What is the difference in using (A -&gt;`hasOne`-- B) and (A -&gt;`belongsTo`-- B)?

Can I use them interchangeably? 






Should i use belongsTo or hasOne in Laravel?

Consider two models <code>A</code> and <code>B</code>
<code>A</code> -> relatedTo <code>B</code> is a <code>one to one</code> relationship
What is the difference in using (A -><code>hasOne</code>-- B) and (A -><code>belongsTo</code>-- B)?
Can I use them interchangeably?

is there any ways that JavaScript can get the variable from the controller in a Laravel Blade template?

Example:
I have the code below:
```php
$langs = Language::all();
return View::make(&#39;NAATIMockTest.Admin.Language.index&#39;,compact(&#39;langs&#39;));
```
Can I get `$langs` and pass it to JavaScript? I already used [PHP-Vars-To-Js-Transformer][1]. But when I use `JavaScript::put()` for two functions in the controller. It didn&#39;t work. Any help?

This is my create function in the controller:

```php
public function create()
{
    $names = $this-&gt;initLang();
    Javascript::put([
        &#39;langs&#39; =&gt; $names
    ]);
	
    return View::make(&#39;NAATIMockTest.Admin.Language.create&#39;,compact(&#39;names&#39;));
}
```
this is my view:
```html
@extends(&#39;AdLayout&#39;)
@section(&#39;content&#39;)
&lt;script type=&quot;text/javascript&quot;&gt;
    var app = angular.module(&#39;myApp&#39;, []);
    app.controller(&#39;langCtrl&#39;, function($scope) {
        $scope.languages = langs;
    });
&lt;/script&gt;
    
&lt;div class=&quot;container-fluid&quot; ng-app=&quot;myApp&quot; ng-controller=&quot;langCtrl&quot;&gt;
    &lt;div class=&quot;row&quot;&gt;
        &lt;div class=&quot;col-md-8 col-md-offset-2&quot;&gt;
            &lt;div class=&quot;panel panel-default&quot;&gt;
                &lt;div class=&quot;panel-heading&quot;&gt;
                    &lt;h2&gt;Create language&lt;/h2&gt;
                &lt;/div&gt;
    				
                &lt;div class=&quot;panel-body&quot;&gt;
                    {!! Form::open() !!}
                        &lt;p class=&quot;text-center&quot;&gt;
                            {!! Form::label(&#39;Name&#39;,&#39;Language: &#39;) !!}
                            &lt;input type=&quot;text&quot; name=&quot;searchLanguage&quot; ng-model=&quot;searchLanguage&quot;&gt;
                        &lt;/p&gt;
    
                        &lt;select name=&quot;Name[]&quot; multiple size=&quot;10&quot; ng-model=&quot;lang&quot; ng-click=&quot;show()&quot;&gt;
                            &lt;option value=&quot;@{{v}}&quot; ng-repeat=&quot;(k,v) in languages | filter:searchLanguage&quot;&gt;
                                @{{v}}
                            &lt;/option&gt;
                        &lt;/select&gt;&lt;br&gt;
    
                        &lt;div class=&quot;text-center&quot;&gt;
                            {!! Form::submit(&#39;Create&#39;,[&#39;class&#39;=&gt;&#39;btn btn-primary&#39;]) !!}&amp;nbsp;
                            {!!   Html::linkAction(&#39;NAATIMockTest\LanguageController@index&#39;, &#39;Back&#39;, null, array(&#39;class&#39; =&gt; &#39;btn btn-primary&#39;)) !!}
                        &lt;/div&gt;
                    {!! Form::close() !!}
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/div&gt;
@endsection
```

my javascript.php in config folder: 
```php
&lt;?php
return [
    &#39;bind_js_vars_to_this_view&#39; =&gt; &#39;footer&#39;,
    &#39;bind_js_vars_to_this_view&#39; =&gt; &#39;NAATIMockTest.Admin.Language.create&#39;,
    &#39;bind_js_vars_to_this_view&#39; =&gt; &#39;NAATIMockTest.Admin.Language.edit&#39;,
    
    &#39;js_namespace&#39; =&gt; &#39;window&#39;,
];
```

The idea is:
I have a table language in MySQL. I want to show the dropdown list with multiple attributes to choose, and I also want to search with angularjs as well. That&#39;s why I want to pass the variable from the controller to JavaScript. Additionally, I have the function inside LanguageController called initLang to check if any language is exist inside the database, it isn&#39;t displayed inside the dropdown list in create the view.


  [1]: https://github.com/laracasts/PHP-Vars-To-Js-Transformer

Passing a PHP variable to JavaScript in a Blade template

Im getting this error when I try to save data to mysql using Laravel 5, other forms and save() methods work fine but this one:

    SQLSTATE[42S02]: Base table or view not found: 1146 Table &#39;sistemal5.cotizacions&#39; doesn&#39;t exist (SQL: insert into `cotizacions` (`customer_id`, `total`, `updated_at`, `created_at`) values (1501, 150.69, 2015-05-11 03:16:25, 2015-05-11 03:16:25))

Here is my Controller store method:

    public function store(CotFormRequest $request)
    	{    
    		$quote = new Cotizacion;
    		$quote-&gt;customer_id = Input::get(&#39;data.clientid&#39;);
    		$quote-&gt;total = Input::get(&#39;data.totalAftertax&#39;);    
    		$quote-&gt;save();    
    	}
And here is my model:

    &lt;?php namespace App\Models\Cotizacion;
    
    use Illuminate\Database\Eloquent\Model;
    
    
    class Cotizacion extends Model {
    
    }

I must be overlooking something really obvious cause i cant understand why Laravel is adding an &quot;S&quot; the table is cotizacion not cotizacions.

How can i troubleshoot this?


Base table or view not found: 1146 Table Laravel 5

I am trying to run the following migration:

    public function up()
	{
		Schema::create(&#39;lifestyle_questions&#39;, function(Blueprint $table)
		{
			$table-&gt;increments(&#39;id&#39;);
			$table-&gt;string(&#39;question&#39;);
			$table-&gt;timestamps();
		});

		Schema::create(&#39;lifestyle_question_answers&#39;, function(Blueprint $table)
		{
			$table-&gt;increments(&#39;id&#39;);
			$table-&gt;integer(&#39;lifestyle_question_id&#39;)-&gt;unsigned();
			$table-&gt;foreign(&#39;lifestyle_question_id&#39;)-&gt;references(&#39;id&#39;)-&gt;on(&#39;lifestyle_questions&#39;);
			$table-&gt;string(&#39;answer&#39;);
			$table-&gt;timestamps();
		});

		Schema::create(&#39;user_lifestyle_question_answers&#39;, function(Blueprint $table)
		{
			$table-&gt;integer(&#39;user_id&#39;)-&gt;unsigned();
			$table-&gt;foreign(&#39;user_id&#39;)-&gt;references(&#39;id&#39;)-&gt;on(&#39;users&#39;);
			$table-&gt;integer(&#39;lifestyle_question_answer_id&#39;)-&gt;unsigned();
			$table-&gt;foreign(&#39;lifestyle_question_answer_id&#39;)-&gt;references(&#39;id&#39;)-&gt;on(&#39;lifestyle_question_answers&#39;);
		});
	}

But I get the following error:

    [Illuminate\Database\QueryException]
    SQLSTATE[42000]: Syntax error or access violation: 1059 Identifier name &#39;user_lifestyle_question_answers_lifestyle_question_answer_id_foreign&#39; is too long (SQL: alter table `user_lifestyle_question_answers` add constraint user_lifestyle_question_answers_lifestyle_question_answer_id_foreign foreign key (`lifestyle_question_answer_id`) references `lifestyle_question_answers` (`id`))

    [PDOException]
    SQLSTATE[42000]: Syntax error or access violation: 1059 Identifier name &#39;user_lifestyle_question_answers_lifestyle_question_answer_id_foreign&#39; is too long

Laravel 5 migration identifier name too long

I download from https://github.com/luciddreamz/laravel Laravel for openshift
then upload over my repository over github. This code for connect to database not work.
The problem is that load variable from `.env` file that locate in root of project

for solve this problem change`.env`  

    # local environment only
    #   for production, see .openshift/.env
    
    APP_ENV=APPLICATION_ENV
    APP_DEBUG=true
    APP_URL=OPENSHIFT_APP_DNS
    APP_KEY=OPENSHIFT_SECRET_TOKEN
    
    DB_DRIVER=mysql
    DB_HOST=OPENSHIFT_MYSQL_DB_HOST
    DB_PORT=OPENSHIFT_MYSQL_DB_PORT
    DB_DATABASE=OPENSHIFT_APP_NAME
    DB_USERNAME=OPENSHIFT_MYSQL_DB_USERNAME 
    DB_PASSWORD=OPENSHIFT_MYSQL_DB_PASSWORD
    
    CACHE_DRIVER=apc
    SESSION_DRIVER=file


my error :

    SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known

    createConnection(&#39;mysql:host=OPENSHIFT_MYSQL_DB_HOST;port=OPENSHIFT_MYSQL_DB_PORT;dbname=OPENSHIFT_APP_NAME&#39;, 
    array(&#39;driver&#39; =&gt; &#39;mysql&#39;, 
          &#39;host&#39; =&gt; &#39;OPENSHIFT_MYSQL_DB_HOST&#39;, 
          &#39;port&#39; =&gt; &#39;OPENSHIFT_MYSQL_DB_PORT&#39;, 
          &#39;database&#39; =&gt; &#39;OPENSHIFT_APP_NAME&#39;, 
          &#39;username&#39; =&gt; &#39;OPENSHIFT_MYSQL_DB_USERNAME&#39;, 
          &#39;password&#39; =&gt; &#39;OPENSHIFT_MYSQL_DB_PASSWORD&#39;, 
          &#39;charset&#39; =&gt; &#39;utf8&#39;,  
          &#39;collation&#39; =&gt; &#39;utf8_unicode_ci&#39;, 
          &#39;prefix&#39; =&gt; &#39;&#39;, 
          &#39;strict&#39; =&gt; false, 
          &#39;name&#39; =&gt; &#39;mysql&#39;), 
    array(&#39;0&#39;, &#39;2&#39;, &#39;0&#39;, false, &#39;0&#39;)) in MySqlConnector.php line 20


SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known

With Laravel 5 it seems like method injection for the Request object is preferred over using the Request facade.

    &lt;?php namespace App\Http\Controllers;
    
    use Illuminate\Http\Request;
    
    class HomeController extends Controller
    {
    	public function index(Request $request)
    	{
    		$email = $request-&gt;input(&#39;email&#39;);
    
    		// OR
    
    		$email = $request-&gt;get(&#39;email&#39;);
    	}
    }

A few questions I have:

Is using `Illuminate\Http\Request` better than using `Illuminate\Support\Facades\Request`

I have no idea how $request-&gt;get() is resolving as there is no function name `get()` in `Illuminate\Http\Request`.  input() and get() does the same thing.

Is method injection better than using Facades?



Content Type	Original Author	Original Content on Stackoverflow
Question	wolfgang	View Question on Stackoverflow
Solution 1 - Laravel	user1669496	View Answer on Stackoverflow
Solution 2 - Laravel	Abid Ali	View Answer on Stackoverflow
Solution 3 - Laravel	bilogic	View Answer on Stackoverflow
Solution 4 - Laravel	Eduardo Romero	View Answer on Stackoverflow
Solution 5 - Laravel	Muhammad Kashif	View Answer on Stackoverflow

Should i use belongsTo or hasOne in Laravel?

Laravel Problem Overview

Laravel Solutions

Solution 1 - Laravel

Solution 2 - Laravel

Solution 3 - Laravel

Solution 4 - Laravel

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JavaScript Standard Style does not recognize Mocha

What is the difference between pandas.qcut and pandas.cut?

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