Completed
Pull Request — master (#81)
by Lloric Mayuga
01:18
created

HasSlug::makeSlugUnique()   A

Complexity

Conditions 3
Paths 2

Size

Total Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 11
rs 9.9
c 0
b 0
f 0
cc 3
nc 2
nop 1
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<?php
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namespace Spatie\Sluggable;
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use Illuminate\Support\Str;
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use Illuminate\Database\Eloquent\Model;
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trait HasSlug
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{
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    /** @var \Spatie\Sluggable\SlugOptions */
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    protected $slugOptions;
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    /**
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     * Get the options for generating the slug.
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     */
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    abstract public function getSlugOptions(): SlugOptions;
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    /**
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     * Boot the trait.
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     */
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    protected static function bootHasSlug()
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    {
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        static::creating(function (Model $model) {
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            $model->generateSlugOnCreate();
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        });
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        static::updating(function (Model $model) {
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            $model->generateSlugOnUpdate();
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        });
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    }
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    /**
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     * Handle adding slug on model creation.
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     */
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    protected function generateSlugOnCreate()
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    {
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        $this->slugOptions = $this->getSlugOptions();
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        if (! $this->slugOptions->generateSlugsOnCreate) {
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            return;
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        }
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        $this->addSlug();
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    }
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    /**
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     * Handle adding slug on model update.
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     */
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    protected function generateSlugOnUpdate()
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    {
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        $this->slugOptions = $this->getSlugOptions();
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        if (! $this->slugOptions->generateSlugsOnUpdate) {
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            return;
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        }
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        $this->addSlug();
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    }
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    /**
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     * Handle setting slug on explicit request.
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     */
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    public function generateSlug()
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    {
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        $this->slugOptions = $this->getSlugOptions();
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        $this->addSlug();
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    }
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    /**
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     * Add the slug to the model.
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     */
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    protected function addSlug()
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    {
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        $this->guardAgainstInvalidSlugOptions();
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        $slug = $this->generateNonUniqueSlug();
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        if ($this->slugOptions->generateUniqueSlugs) {
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            $slug = $this->makeSlugUnique($slug);
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        }
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        $slugField = $this->slugOptions->slugField;
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        $this->$slugField = $slug;
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    }
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    /**
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     * Generate a non unique slug for this record.
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     */
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    protected function generateNonUniqueSlug(): string
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    {
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        if ($this->hasCustomSlugBeenUsed()) {
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            $slugField = $this->slugOptions->slugField;
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            return $this->$slugField;
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        }
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        return Str::slug($this->getSlugSourceString(), $this->slugOptions->slugSeparator, $this->slugOptions->slugLanguage);
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    }
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    /**
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     * Determine if a custom slug has been saved.
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     */
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    protected function hasCustomSlugBeenUsed(): bool
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    {
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        $slugField = $this->slugOptions->slugField;
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        return $this->getOriginal($slugField) != $this->$slugField;
0 ignored issues
show
Bug introduced by
It seems like getOriginal() must be provided by classes using this trait. How about adding it as abstract method to this trait?

This check looks for methods that are used by a trait but not required by it.

To illustrate, let’s look at the following code example

trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

The trait Idable provides a method equalsId that in turn relies on the method getId(). If this method does not exist on a class mixing in this trait, the method will fail.

Adding the getId() as an abstract method to the trait will make sure it is available.

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    }
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    /**
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     * Get the string that should be used as base for the slug.
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     */
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    protected function getSlugSourceString(): string
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    {
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        if (is_callable($this->slugOptions->generateSlugFrom)) {
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            $slugSourceString = call_user_func($this->slugOptions->generateSlugFrom, $this);
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            return substr($slugSourceString, 0, $this->slugOptions->maximumLength);
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        }
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        $slugSourceString = collect($this->slugOptions->generateSlugFrom)
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            ->map(function (string $fieldName) : string {
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                return $this->relationships($fieldName) ?? $this->$fieldName ?? '';
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            })
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            ->implode($this->slugOptions->slugSeparator);
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        return substr($slugSourceString, 0, $this->slugOptions->maximumLength);
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    }
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    protected function relationships(string $fieldNames)
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    {
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        if (strpos($fieldNames, '.') === false) {
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            return null;
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        }
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        $value = $this;
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        foreach (explode('.', $fieldNames) as $fieldName) {
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            $value = $value->$fieldName;
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        }
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        return $value;
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    }
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    /**
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     * Make the given slug unique.
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     */
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    protected function makeSlugUnique(string $slug): string
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    {
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        $originalSlug = $slug;
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        $i = 1;
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        while ($this->otherRecordExistsWithSlug($slug) || $slug === '') {
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            $slug = $originalSlug.$this->slugOptions->slugSeparator.$i++;
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        }
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        return $slug;
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    }
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    /**
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     * Determine if a record exists with the given slug.
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     */
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    protected function otherRecordExistsWithSlug(string $slug): bool
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    {
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        $key = $this->getKey();
0 ignored issues
show
Bug introduced by
It seems like getKey() must be provided by classes using this trait. How about adding it as abstract method to this trait?

This check looks for methods that are used by a trait but not required by it.

To illustrate, let’s look at the following code example

trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

The trait Idable provides a method equalsId that in turn relies on the method getId(). If this method does not exist on a class mixing in this trait, the method will fail.

Adding the getId() as an abstract method to the trait will make sure it is available.

Loading history...
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        if ($this->incrementing) {
0 ignored issues
show
Bug introduced by
The property incrementing does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
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            $key = $key ?? '0';
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        }
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        return (bool) static::where($this->slugOptions->slugField, $slug)
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            ->where($this->getKeyName(), '!=', $key)
0 ignored issues
show
Bug introduced by
It seems like getKeyName() must be provided by classes using this trait. How about adding it as abstract method to this trait?

This check looks for methods that are used by a trait but not required by it.

To illustrate, let’s look at the following code example

trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

The trait Idable provides a method equalsId that in turn relies on the method getId(). If this method does not exist on a class mixing in this trait, the method will fail.

Adding the getId() as an abstract method to the trait will make sure it is available.

Loading history...
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            ->withoutGlobalScopes()
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            ->first();
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    }
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    /**
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     * This function will throw an exception when any of the options is missing or invalid.
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     */
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    protected function guardAgainstInvalidSlugOptions()
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    {
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        if (is_array($this->slugOptions->generateSlugFrom) && ! count($this->slugOptions->generateSlugFrom)) {
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            throw InvalidOption::missingFromField();
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        }
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        if (! strlen($this->slugOptions->slugField)) {
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            throw InvalidOption::missingSlugField();
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        }
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        if ($this->slugOptions->maximumLength <= 0) {
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            throw InvalidOption::invalidMaximumLength();
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        }
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    }
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}
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