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At this moment, you can see we send the password directly to our database, and this is not very good

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because everybody can see the password.

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So we will go to a store, the password we're hashing before this point with Mongo DB.

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So we need to use the mongoose hook.

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The mongoose is a special function which fire a certain mongoose, Iran's a mongoose who is a special

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function which will fire.

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After or before a certain mongoose, events such as whether is safe, we move, update one, unit one

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or unit.

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So back to our project if you want to do it before we save or create a user.

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We can go to the USS Kimmo and.

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For example, if we want to.

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Do something before we save the USA, we can type USA schema.

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And then before we saved a yuzu.

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We can pass the next.

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And there's just like express video where you have to make a mix in order to not to stuck inside dysfunction.

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And we want to continue this function after we do something in between.

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So, yeah, we can also download and be both a.

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And then we passed these these referred to.

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The user that we just created.

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So now we start this over.

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And if we Nemitz, Peterffy, and because here now we just passed one Yuuta with PETA, so we use Peterffy

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and try to send.

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At the console, you kind of see it has the instance of the user and which is.

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The local instance, and we can also do it after we save the user so we can use polls.

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This is after her save and we can also post a document that we just save.

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So we tried and other uses such as Peter Tattoo.

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And then click save.

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Now, you can see there are two kinds of a lot of these people save and the other is after save, and

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these properties just can happen after saving to the Mongo DB.