Truncate string in Laravel blade templates

问题:

Is there a truncate modifier for the blade templates in Laravel, pretty much like Smarty?

I know I could just write out the actual php in the template but i'm looking for something a little nicer to write (let's not get into the whole PHP is a templating engine debate).

So for example i'm looking for something like:

{{ $myVariable|truncate:"10":"..." }}

I know I could use something like Twig via composer but I'm hoping for built in functionality in Laravel itself.

If not is it possible to create your own reusable modifiers like Smarty provides. I like the fact that Blade doesn’t overkill with all the syntax but I think truncate is a real handy function to have.

I'm using Laravel 4.

回答1:

In Laravel 4 & 5 (up to 5.7), you can use str_limit, which limits the number of characters in a string.

While in Laravel 5.8 up, you can use the Str::limit helper.

//For Laravel 4 to Laravel 5.5
{{ str_limit($string, $limit = 150, $end = '...') }}
//For Laravel 5.5 upwards
{{ \Illuminate\Support\Str::limit($string, 150, $end='...') }}

For more Laravel helper functions http://laravel.com/docs/helpers#strings

回答2:

Laravel 4 has Str::limit which will truncate to the exact number of characters, and also Str::words which will truncate on word boundary.

Check out:

• http://laravel.com/api/4.2/Illuminate/Support/Str.html#method_limit

回答3:

Edit: This answer is was posted during the Laravel 4 beta, when Str class did not exist. There is now a better way to do it in Laravel 4 - which is Dustin's answer below. I cannot delete this answer due to SO rules (it wont let me)

Blade itself does not have that functionality.

In Laravel 3 there was the Str class - which you could do:

{{ Str::limit($myVariable, 10) }}

At this stage I do not believe the Str class is in Laravel 4 - but here is a port of it that you can include in composer to add to your own project

回答4:

You can Set the namespace like:

{!! \Illuminate\Support\Str::words($item->description, 10,'....')  !!}

回答5:

Update for Laravel 6.* : You require this package to work all laravel helpers composer require laravel/helpers

For using helper in controller, don't forget to include/use class as well

use Illuminate\Support\Str;

Laravel 5.8 Update

This is for handling characters from the string :

{!! Str::limit('Lorem ipsum dolor', 10, ' ...') !!}

Output

Lorem ipsu ... 

This is for handling words from the string :

{!! Str::words('Lorem ipsum dolor', 2, ' ...') !!}

Output

Lorem ipsum ... 

Here is the latest helper documentation for handling string Laravel Helpers

回答6:

To keep your code DRY, and if your content comes from your model you should adopt a slightly different approach. Edit your model like so (tested in L5.8):

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class Comment extends Model
{
    public function getShortDescriptionAttribute()
    {
        return Str::words($this->description, 10, '...');
    }
}
?>

Then in your view :

{{ $comment->short_description }}

回答7:

This works on Laravel 5:

{!!strlen($post->content) > 200 ? substr($post->content,0,200) : $post->content!!}

回答8:

You can set string limit as below example:

<td>{{str_limit($biodata ->description, $limit = 20, $end = '...')}}</td>

It will display only the 20 letters including whitespaces and ends with ....

Example image

回答9:

For simple things like this I would prefer to make a helper - for example:

create a helpers.php file in your /app/helpers.php with following content:

<?php
if (! function_exists('short_string')) {
    function short_string($str) {
            $rest = substr($str, 0, 10);
            return $rest;
    }
}

Register the helper.php at autoload in your composer.json

   "autoload": {
        "files": [
            "app/helpers.php"
        ],
        "psr-4": {
            "App\\": "app/"
        },
        "classmap": [
            "database/seeds",
            "database/factories"
        ]
    }

After that you can use in your blade file for example:

{{ short_string($whatever_as_text) }}

You can use this simple function, then, globally in your app.

回答10:

Laravel 6 Update:

@php
$value = 'Artificial Intelligence';
$var = Str::limit($value, $limit = 15, $end = '');
print_r($var);
@endphp

<p class="card-text">{{ Illuminate\Support\Str::limit($value, 7) }}</p>
<h2 class="main-head">{!! Str::limit($value, 5) !!}</h2>