A brief analysis of the difference between isDirty() and wasChanged() in Laravel

This article will talk about the difference between isDirty() and wasChanged() in Laravel data model. I hope it will be helpful to everyone!

Is there a difference between `isDirty()` and `wasChanged()` in the Laravel data model?

Answer: There is a difference.

Related code: github.com/laravel/framework/blob/...

The code of the isDirty function is as follows:

/**
 * 判断模型或者任意指定模型属性是否被修改过
 *
 * @param  array|string|null  $attributes
 * @return bool
 */public function isDirty($attributes = null){
    return $this->hasChanges(
        $this->getDirty(), is_array($attributes) ? $attributes : func_get_args()
    );}

The code of getChanges() and getDirty() functions is as follows

/**
 * 获取自从最后一次同步以来，被修改的属性值
 *
 * @return array
 */public function getDirty(){
    $dirty = [];
    foreach ($this->getAttributes() as $key => $value) {
        if (! $this->originalIsEquivalent($key, $value)) {
            $dirty[$key] = $value;
        }
    }
    return $dirty;}/**
 * 获取所有已经被修改的属性.
 *
 * @return array
 */public function getChanges(){
    return $this->changes;}

In short.

The answer is quoted from: laracasts.com/discuss/channels/elo...

isDirty (and getDirty) is used for pre-save execution to see which properties have been modified between retrieval from the database and call, while wasChanged (and getChanges) is used for post-save execution to see Whether the property was modified or updated in the last save (from code to database).

Original address: https://stackoverflow.com/questions/58312036/incoherence-between-eloquent -isdirty-and-getchanges

Translation address: https://learnku.com/laravel/t/61576

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