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In the last video we spoke about some document collections we had said that there is a very good reason

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for having a separate user collection and a separate survey collection.

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So we're now going to flip back over to our code editor and we're going to set up this recipient subcollection

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and nested within a single survey.

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So going to change back over to my code editor inside of my model's directory I'm going to make a new

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file and I'm going to call it recipient.

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J.S. now inside of here we are going to create our sub document collection by first creating a schema

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file or a schema object that represents a recipient.

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So remember that we had said that every single recipient should have two properties associated with

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it.

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They should have the email address and the click property clicked will be a boolean.

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That's either true or false depending upon whether or not this particular email address has received

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or has actually been used to click on a link previously.

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And remember this is all about somehow prigged preventing duplicate clicks on individual buttons by

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our users.

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OK.

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So back inside of recipient Yes.

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The initial setup of this schema is going to look very similar to how we previously set up models before.

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So we'll say Konst Mongoose is required mongoose will pull off the schema object

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and then we will use that schema object to make a recipient schema like so.

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Now again inside of here we really just want to reflect the user's email address and whether or not

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they've clicked on it before.

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So we're going to give it an email property of string and then a responded property.

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So I'm going to call those responded essentially you know clicked responded is obviously a lot more

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clear what it means rather than clicked.

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So responded means.

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Has this person responded to the survey yet.

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Yes or no.

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So we want this to be of type Boolean and we are going to default it's value to be false.

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So by default whenever surveys first created no they have not clicked on anything.

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And until you actually click on yes or no will we ever flip this respondent property over to true OK.

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So this is how we set up the initial definition of what our sub document looks like.

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So we're saying that we have a sub document as email and responded.

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And now at the bottom this is where things are going to be a little bit different.

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Rather than registering the schema with Mongoose we are going to export the schema.

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So I'll say module exports recipient schema.

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And again please check your spelling on recipients.

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Very easy to make a typo here.

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OK.

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So this now sets up the idea of a recipient.

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So we know what a recipient looks like.

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We are now going to import this schema into our survey.

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JS file.

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And then we will sociate it with the survey model.

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So we're going to change back over to survey geus at the top we will import recipient schema

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from dot slash recipient.

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And then finally we're going to use the recipient schema to set up the actual collection or some document

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collection inside of our model.

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So right here we still have the list of recipients.

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When we had said this was going to be an array of strings.

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Well now rather than being an array of strings we're going to say it's going to be an array or a list

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of records that conform to the recipient schema.

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So rather than saying recipients is an array of strings it's going to be an array of recipient schema

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like so.

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OK.

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So now whenever mongoose first loads up the survey's model whenever it ever saves a record to the survey's

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collection it will look at the schema right here.

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They'll say OK it's got a title it's got a body it's got to subject whatever.

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And then we'll get to recipients and we'll say Ooh interesting.

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This is going to be an array of recipient schema records.

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So every record or every object inside this array right here must obey the schema that we defined over

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here.

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So that's pretty much it.

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That's how we load up a sub or how we create a sub document collection.

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Now of course we still need to see how we add records to this sub document collection all that kind

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of good stuff.

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But this is at least good enough for understanding how we create it in the first place.

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OK.

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So this is looking pretty good.

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We've now got our sub document collection set up.

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Let's now continue in the next section.