Users\WT\Documents\likablelogic\NicholasAir\node.js with express full stack tutorial-YOUTUBE

How To Build A Markdown Blog Using Node.js, Express, And MongoDB

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Build a REST API with Node JS and Express | CRUD API Tutorial

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JavaScript Mastery

In this video, you'll learn everything you need to know about creating a simple API usingNode andExpress. Join our ...

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What Is a Rest Api | What Is Crud Crud | Visual Studio Code | Body Parser | Nodemon | Callback | Creating Routes for Users | Export Default Router | Json Formatter | Postman | Just like that and We Need To Change this To Be Template Strings Okay So Now if We Test that Out Let's Go Back to the Postman Remember We CanNot Make Delete Requests or any Other Requests Other than Get Requests from the Browser so We Need To Go Back Here Let's Create Johnny Let's Also Create Jane You Can See Jane Added to the Database and Now if You Make a Get Request We Should Be Able To See All the Users and You Can See Them Right Here First Name Johnny and First Name Jane with Their Own Corresponding Id | Good I Forgot To Change this from Const To Let because in this Case We Are Changing the Users Array as You Can See Right Here So Let's Save that Let's Add Two Users One More Time so We Go to the Post Delete this and Do We Have Yeah We Have Our Jane Create that Create John and Then We Go to the Get Just To Make Sure that Users Are There They Are We Take John's Id We Go To Delete Request and Then Append that to the Url Append His Id if We Send that the User Should Be Deleted | We Go To Delete Request and Then Append that to the Url Append His Id if We Send that the User Should Be Deleted and We See User with the Id Deleted from the Database but Now When We Go to the Get of the Users We Should See that John Is No Longer There We Only Have Jane Which Means that Our Delete Request Works Completely Great Again in Here We Are Just Using the User's Array but in the Real Database in the Mongodb for Example You'D Be Using Real Methods To Access the User from the Database | We Have a Patch Method and We Also Have a Put Method Put Is Used When You Want To Completely Overwrite Something So if You Want To Change Everything There Is in the | And Then We Can Change those Things Just a Simple if Statement To Check if There Is a First Name if There Is a First Name Then We'Re Going To Set the User That First Name User of Course Being this User Here Which We Found Which We Want To Update To Be Simply First Name and Then We Can Repeat this for Everything for Example in Here for the Last Name and Also We Can Repeat this One More Time for the Age So if There Is Age Then User that Age Is Equal to H with this We Can Now Change One or Many Different Properties of the User Just To Go through this One More Time because Patch Indeed Is the Most Complicated Function Here We Are Receiving a Request Parameter as You Can See Here Which Is the Id that Id Specifies Which User Do We Want To Update We Find It Here Using the Find Method and Declare a Variable User | Okay if We Test that Out We Should Be Able To Go Back to the Postman Create One User First so Post 2d Slash Users and We Need To Have Everything in the Post So First Name Johnny Last Name Do and the Age Is Equal to 10 Okay We Send that We Should Get a Response Saying User with the Name Johnny Added to the Database Let's Make a Get Request Just To Be 100 Sure Okay We Do Get It and Now We Have this Id Now We Can Add that Id to the Url | Our First Get Route Is Really Simple So Let's Do Something with the Post Route the Post Route Has Two Parameters First One Being the Slash Route Just Slash Users and the Second One Being Callback Function Which Is Going To Be Executed once Someone Visits that Route so We Can Take that and We Can Separate that into a New Function Const and that's Going To Be Create User and that's Going To Be a Function but We Don't Actually Have To Create this Function Block We Just Did We Copied It Right Here So if I Paste this You Can See this Is Now a Separate Function Create User Function | But We Don't Actually Have To Create this Function Block We Just Did We Copied It Right Here So if I Paste this You Can See this Is Now a Separate Function Create User Function and It Does Exactly that It Creates a User So Right Now We Can Just Put that Here Instead of Having It Immediately in the Route We Now Took It Out into a New Function and Are Using It Right There You May Say that this Doesn't Make a Lot of Sense and some May Agree but Now We'Re Going To Take this Function | Once You Do that Save the File Head Back to the Routes and Then at the Top Make Sure To Import It So in Here We'Re Going To Do Import Let's Do It after this One Import Curly Braces Create User from Dot Slash Controllers Slash Users Js and Now as You Can See We Are Using this Function I Would Like You To Do the Same Thing for All the Other Routes Let Me Show You How To Do It for a Few More in Here We'Re GonNa Take this Function Call It Get User | Make Sure To Import It So in Here We'Re Going To Do Import Let's Do It after this One Import Curly Braces Create User from Dot Slash Controllers Slash Users Js and Now as You Can See We Are Using this Function I Would Like You To Do the Same Thing for All the Other Routes Let Me Show You How To Do It for a Few More in Here We'Re GonNa Take this Function Call It Get User and Now We Can Also Go to the Controllers Export Const Get User Is Equal to and Now I Just Paste It | And that's Also One Way To Show You We Want To Deal with the Logic Right There in Here We Add the Ids We Do Something Different We Import Different Modules We Return some Things but in the Routes We Only Want To Have Routes Looks like We Have an Error Right Now and Let's See Why Is that Happening Oh We Are Missing the Dot Js Extension Right Here in the Routes if We Add that We Should Be Fine Server Running on Port Localhost Http 5000 Great Now Let's Do the Same Thing for All the Other Routes this One Is Going To Be Get User | Okay GonNa Keep Doing that for a Few More Functions Let's Just Add All the Names Here So Get User Then We'Re GonNa Have Delete User and Also Update User Okay Let Me Take the Code for the Delete User and Move to the Controllers To Add It Export Cons Delete User Is Equal to this Function Right There and Finally We Have One More Left Which Is the Update User or the Patch I'M GonNa Take this Code Call It Update User and Then in the Controllers Export Const Update User It's Equal to this Whole Function Which We Just Copied Right There | And Finally We Have One More Left Which Is the Update User or the Patch I'M GonNa Take this Code Call It Update User and Then in the Controllers Export Const Update User It's Equal to this Whole Function Which We Just Copied Right There Now You Can See We Have All the Logic for Our Handlers Right There All the Functions You Can Even Collapse Them like this and Now in the Routes See How Simple this Looks Now We Only Have the Routes Here | Routes | Once We Want To Get a User with a Specific Id Then We Have Get User if We Want To Delete User with a Specific Id We Call the Delete User Function and Then You Can See the Function Is Actually in the Controllers the Last Thing I Forgot To Do Is To Take this User's Array and Also Move It to the Controllers Just at the Top Great that's It Now Let's Give Our Application One Last Test Let's Go to Our Localhost and See if Everything Works Perfectly because We Did Change a Lot of Things Okay Starting with the Browser if We Do Make a Get Request To Slash Users We Do See an Empty Array | How Can We Be Sure that that Happened We Go Back Here To Slash Users Make a Get Request and You Can See We Only Have Jane and John and the Last Thing To Test Out Would Be if We Can Actually Modify a User To Do that We'Re Going To Make a Patch Request to a Specific User's Id We CanNot Do this One because We Just Deleted It so We Need To Take a New One Let's Do Jane for Example and Modified Here and Now We Need To Send some Data Let's Say that Jane Remarried | Save It You Can See It's Still Jane the Age Is Still 24 but Now the Last Name Has Changed Which Means that Our Update Function Works Perfectly and There You Have It this Is the Full Application as You Can See the File Structure Is Not That Bad We Have the Index Js File with the Setup of the Server Then We Have the Routes for All the Routing and Finally We Have the Controllers for Making Things Work and Adding the Logic if You'D Like Me To Create a Video with Connecting this to the Database or Maybe Even Creating a Full Stack Mern Application on this Topic Let Me Know in the Comments