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So now we want to handle the situation where someone clicks save on this screen and allow them to update



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the reservation, and that's really simple.



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So let's go create the handler first.



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So we'll go back to our code and find handlers.



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And we are using a function called Admin's Show Reservation.



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So let's just copy this.



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And create a new function right underneath this one and change the name to post admin post show reservation.



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All right, so the first thing we want to do, when you think about it, we're only getting some of



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the information for a given reservation and we want to update it in the easiest way possible.



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So what I'm going to do is grab the ID and we'll grab the ID the same way we did here and also get the



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source the same way I did here.



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So I copy all of this code, paste it in here, and then I'll get the reservation by ID because I now



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have the ID.



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So Rez and Error are assigned the value of M DB.



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Don't get reservation by ID and I'll pass it ID and I'll check for an error and I'll just copy and paste



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this because I have it all over the place so that's easy enough.



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And then I'll update the reservation with what's been passed.



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So resort first name is equal to ARG form get first name.



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I have to remember to pass the form before I get too much further.



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Last name.



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His last name.



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Email is email



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and phone is phone.



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OK, now let's pass the form.



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I'll just see where I do this or copy it from somewhere else.



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PERS form right there.



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Some will copy this, go back down to the bottom and put that person form in as the first thing that



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we do.



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OK, and here I don't want to take them to a page like that.



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I just want to go with server error because this is a administrative back end and I'm less concerned



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about pretty error pages here because it's just something I'm going to use.



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All right.



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So I've passed the form.



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I now have updated my reservation model that I just pulled from the database.



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So when I pulled it from the database, it had us has all the values that were in there prior to any



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changes that we're going to make.



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And then I just override the four things that are possibly changing and I would just update the database.



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So error and I only have error declared somewhere.



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So I don't have to define or use the assign a condition to ecocide IMDB DOT update reservation and pass



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it my rez.



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And then again, if there's an error, give me the server error.



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Otherwise where do I want to take them.



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Well I want to take them when they save the changes.



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Probably back to the list of reservations, either the new or the the all.



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So I can just say htp dot redirect



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w our admin reservations dash and then I'll put a percent s in there and we'll make this a format as



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Pranav and replace the placeholder with my source and then I have to give them a status status c other



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and that should be enough.



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You can put a message in there.



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I should just put my message in there.



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M dot app.



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Dot session dot put.



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Out of context, flash



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changes saved there that should do it all right now, obviously, I have put no error checking in here



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at all.



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And one of the things that I would do in production, of course, is put air checking in here.



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And I would also put air checking in using JavaScript, as we've done before.



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We've been over that several times.



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And you should be able to handle that on your own.



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If not, look at the source code that I post at the end of this section for everything that's completed



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up until that point.



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And you can see how I did it.



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But for now, I just want to get through the updating part and not cover ground.



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We've already covered several times.



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So let's stop the application, start the application and see what we got wrong, if anything.



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So I'll come back to here, reload this and I'll put an R after the first name.



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And this is for reservation ID five so I can find it again if I have to.



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And it takes me nowhere.



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I got an error.



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What did I get.



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Nothing.



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Oh, you know what I didn't do?



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I didn't put the necessary handler in place.



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So let's go back to the roots and find this and change that to a post and have it to go to admin post



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show reservation and get rid of the extra text here.



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Stop the application, run the application and try that again.



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So we'll go to the dashboard.



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And we'll go to Reservation's new reservations, look at the very first one at an hour and click save



79

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and go back to here and it did change it.



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That's good.



81

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OK, so let's cancel.



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Perfect.



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Now let's change the last name or her save that worked.



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And it did it everywhere.



85

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Oh, I made a mistake in my school somewhere.



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Let's go have a look at our school for the update.



87

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And here, yes, look at that.



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I updated absolutely all of the records because they didn't put a clause in there.



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As I said a little while ago, I think I need more caffeine where ID equals dollar sign six.



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And that would come from.



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You got ID?



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OK, let's try that again.



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Stop the application.



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Run the application, it's running, let's reload this page and change just this one, I'll get rid



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of the extra hours and it should just change that one.



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Five.



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Did and now change just that one and it changed it.



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All right, well, that was an easy mistake to make, but one that could have had catastrophic consequences



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if I was working on live data, which is why I never, ever work with live data and neither should you.



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OK, so we've got that part down.



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Now, the next step will be to actually add a button that allows us to make a reservation as processed,



102

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but only have that button show up if it is one that has not been processed and to add a button to delete



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it.



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And we'll take care of that in the next lecture or two.