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Build a Todo App with Spring Boot & Angular Material Part 4
#springboot #angularmaterial #todoapp #webdevelopment #javaprogramming #angular #fullstackdevelopment #springboottutorial #angulartutorial
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hi welcome back in our last video we run
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the application and we have configured
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the database and tables now let's back
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to our controller
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section now here we are we have to do
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our cred relational operation all the
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things are over here inside the
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controller so
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controller when the data is coming from
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the front end it is it is coming why the
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dto format it pass into the
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controller a controller so
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controller first we have to add The
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annotation
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rest controller these all things I
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already explained second one second
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addition is a
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Crossen third
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one reest
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here where we have add the path so add
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path
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API
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version this a URL
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employee that's it that's the
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thing right now what you're going to do
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is we have
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to create the method now we have to
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create the method we have to create the
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method which is a save method I'm going
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to create the save method first you have
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to to save the
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records so first we have to implement
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The annotation is a
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post post mapping we already I discuss
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about this all things post
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mapping
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path the path here write there this one
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should
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sa now here write the we have
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to create the function which is a
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public now we have to join two tables
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and get the record and everything so
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here we have to get this one the same
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the employee this employee class we have
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write
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employee employee here have write save
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you get the entity here this entity you
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get here employee save save the data
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save
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save employee you write like this
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employee so this one it ask import the
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package you have to select this one all
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on alt here it will be telling all plus
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enter all plus enter it import the class
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this class has been import to here we
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have to create the method employee
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save
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employee here you have to
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write
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reest body
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reest
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body here
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employee save D this one employee save
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DET
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employee Save
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dto Right employee Save dto open and
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close bracket right so when the data is
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coming from the front end it is it is
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coming
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uh why the employee for dto format
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employee save this it is coming
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here right after
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that the data is coming to the
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controller controlling passing to a
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service control passing to our service
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so first you have ADD The annotation
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Auto okay out write private
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okay have to
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write which one employee
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service
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service this
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one you create the object employee
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service that's it this one you write it
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over here
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return you write simply you write like
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this employee service
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Employee Service
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dot we have to create inside the
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employee service this employee service
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class we have create the method add
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employee you simply create
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employee and employee what is the data
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coming from the front
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end it is coming
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here the DT format save detail format is
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coming here it passing to here you are
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passing this one
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copy and paste it over here it is
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passing to here that's the thing you
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have
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write after that this method we have to
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create on the add employee method we
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have create on the employee service so
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select click on this bulb symbol create
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the method add the employee in Employee
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Service you create click on this now
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here it has been created
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successfully it has been created
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successfully now we have to go to
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the employee service EMP this is the
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interface this interface we have to this
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is a implementation only so here we have
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to go to the
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class employee service we have to
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implement implements which one which
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class I'm going to uh interface I'm
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going to this one Employee
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Service employee
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service that's it if you implement this
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one but it show the error what is the
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error is you click on this bulb symbol
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it ask to implement the method there is
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a method is there so you have to
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implement it if you implement this
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employee Employee Service you have to
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implement this methods so Implement
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methods add employee click on this
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that's it that's the thing you have
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WR now the record is coming
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here it is passing to
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the employee
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IML the IML what you are going to do is
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it is add the record in into the
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database so we have to communicate with
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the
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repo now let's move to the repo employee
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repo repo public this is the this is not
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a class I accidentally created this is
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not a class I just remove it right click
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delete I accidentally create the class
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so here we have to select the repo right
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click new we have to create as a
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interface you select
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interface
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employee
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report say employee report which say
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interface right
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this
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interface the interface we have to
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extend we have a
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jpa
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repository which is a
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jpa here what you going to do is you
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have to give the first one is a your
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entity which is a employee
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and your ID your First Column which is a
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primary key which is ID what's the data
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typ data type your put it here which is
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a long if it's a int you can put it as a
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in if it's a string you have to put it
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as a string this is a long so you have
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to write it here long that's a simple
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stuff right why you are putting here
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entity we have to pass the entity class
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in order to communicate with the
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database we have the data will be
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communicate bya the entity so that we
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have to write entity the first data type
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say ID what the data type you write law
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the jpa repository it it is manage all
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the database quaries here all on the
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control click on this here the
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save delete all the method should be
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there get by all the things should be
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there this jpa repository that's it
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that's think you have to write it right
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after that we have to go to the
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service IML here you have to add The
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annotation
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service
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right add The annotation
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service that's it that's the thing you
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have to write
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it I hope you guys understood things
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well I'll see you in my next lecture in
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