如何从 Laravel 中的 Posts::all() 获取标题？

Question

I am trying to get attribute title from all of the Posts. Right now I have, Posts::all()

I have tried, Posts::title and Posts::title->all()

Answer 1

Use pluck :

$titles = Posts::all()->pluck('title');

Answer 2

Since each Eloquent model serves as a query builder , you may use any query builder method avaible.

So instead of getting all the attributes of the model with all() method, and then filtering the resulting collection, you can directly do the query to get only that attribute.

Retrieving Results

Retrieving A List Of Column Values

If you would like to retrieve a Collection containing the values of a single column, you may use the pluck method. In this example, we'll retrieve a Collection of post titles:

$titles =  Posts::pluck('title');

foreach ($titles as $title) {
    echo $title;
}

Or with select:

Selects

Specifying A Select Clause

You may not always want to select all columns from a database table. Using the select method, you can specify a custom select clause for the query:

$posts = Posts::select('title')->get();

foreach ($posts as $post) {
    echo $post->title;
}