Source : Learn to combine RxJs sequences with super intuitive interactive diagrams
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import React from 'react' | |
import axios, { post } from 'axios'; | |
class SimpleReactFileUpload extends React.Component { | |
constructor(props) { | |
super(props); | |
this.state ={ | |
file:null | |
} |
TLDR: The cascade={"remove"}
is like a "software" onDelete="CASCADE"
, and will remove objects from the database only when an explicit call to $em->remove()
occurs. Thus, it could result in more than one object being deleted. orphanRemoval
can remove objects from the database even if there was no explicit call to ->remove()
.
I answered this question a few times to different people so I will try to sum things up in this Gist.
Let's take two entities A
and B
as an example. I will use a OneToOne relationship in this example but it works exactly the same with OneToMany relationships.
class A