如下圖範例，在最後->get()之後加上->keyBy('id')，可以把id這個欄位變成key，在資料處理過程很好用。


本筆記參考:
1. https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-ke

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<div class="draft-block draft--p left">如下圖範例，在最後-&gt;get()之後加上-&gt;keyBy('id')，可以把id這個欄位變成key，在資料處理過程很好用。</div>
<div class="draft--imgNormal draft-block"><div><div style="height:256px" class="image-block-prerender" data-src="https://images.vocus.cc/c88e53e2-ccfb-4f3e-be0f-fd76ac478475.jpg" data-width="256" data-height="186" data-position="center"></div><figcaption class="imageCaption draft-block" style="cursor:text;display:block"></figcaption></div></div>
<div class="draft-block draft--p left"></div>
<div class="draft-block draft--p left"><span style="font-weight: bold; ">keyBy multiple columns:<br></span>-&gt;keyBy(function ($item) {<br>　　return $item['id_1'] . '_' . $item['id_2'];<br>});</div>
<div class="draft-block draft--p left"></div>
<div class="draft-block draft--p left"><span style="font-style: italic; ">本筆記參考:<br>1. </span><a href="https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-key-as-the-fields-id" target="_blank" class="draft--a"><span style="font-style: italic; ">https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-key-as-the-fields-id</span></a><span style="font-style: italic; "><br>2. </span><a href="https://www.itsolutionstuff.com/post/laravel-collection-keyby-method-exampleexample.html" target="_blank" class="draft--a"><span style="font-style: italic; ">https://www.itsolutionstuff.com/post/laravel-collection-keyby-method-exampleexample.html</span></a></div>

<p>如下圖範例，在最後-&gt;get()之後加上-&gt;keyBy('id')，可以把id這個欄位變成key，在資料處理過程很好用。</p>
<p><br></p>
<p><br></p>
<p><strong>keyBy multiple columns:<br>
</strong>-&gt;keyBy(function ($item) {<br>
　　return $item['id_1'] . '_' . $item['id_2'];<br>
});</p>
<p><br></p>
<p><em>本筆記參考:<br>
1. </em><a href="https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-key-as-the-fields-id"><em>https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-key-as-the-fields-id</em></a><em><br>
2. </em><a href="https://www.itsolutionstuff.com/post/laravel-collection-keyby-method-exampleexample.html"><em>https://www.itsolutionstuff.com/post/laravel-collection-keyby-method-exampleexample.html</em></a></p>

如下圖範例，在最後->get()之後加上->keyBy('id')，可以把id這個欄位變成key，在資料處理過程很好用。

keyBy multiple columns:
->keyBy(function ($item) {
　　return $item['id_1'] . '_' . $item['id_2'];
});

本筆記參考:
1. https://stackoverflow.com/questions/26865877/laravel-eloquent-return-array-key-as-the-fields-id
2. https://www.itsolutionstuff.com/post/laravel-collection-keyby-method-exampleexample.html

Laravel Eloquent: ->keyBy()