Delete a record in MYSQL using playframework and Form<T> -


hi new play framework.i implement crud operation using mysql database in play framework.

i have able delete, update entire table, not able delete single record. want pass values html.

index.scala.html  @(message: string)  @main("welcome play") {   <ul id="bars">      </ul>  <form action="@routes.application.addbar()" method="post">     <label for="name"> enter name</label>  <input name="name"/> <br>     <label for="place"> enter place</label>  <input name="place"/> <br>     <input type="submit"/> </form>  <form action="@routes.application.getbars()" method="get">     <label for="retrieve"> retrieve details table </label>       <input type="submit"/> </form>  <form action="@routes.application.deletebar()" method="get"> <label for="name"> enter name deleted</label>  <input name="name"/> <br> <input type="submit" value="delete single record"/> </form>  <form action="@routes.application.updatebar()" method="post">     <label for="name"> enter name</label>  <input  name="name"/> <br>     <label for="place"> enter place</label>  <input name="place"/> <br>     <input type="submit"/> </form> }

application.java 

package controllers;  import com.avaje.ebean.ebean; import com.avaje.ebean.sqlupdate; import java.util.list; import models.bar; import play.*; import play.data.form; import play.db.ebean.model; import play.mvc.*; import play.twirl.api.content; import views.html.*; import play.libs.json; public class application extends controller {      public static result index() {         int rowcount1 = bar.find.findrowcount();          return ok(index.render("your new application ready."));     }      public static result addbar() {         bar bar = form.form(bar.class).bindfromrequest().get();         bar.save();         return redirect(routes.application.index());     }      public static result login() {          bar bar = form.form(bar.class).bindfromrequest().get();         bar.save();         return redirect(routes.application.index());     }     public static result getbars(){         list<bar> bars = new model.finder(string.class, bar.class).all();         return ok(json.tojson(bars));     }   public static result deletebar(string name) {      sqlupdate down = ebean.createsqlupdate("delete bar name = :param1 ");     down.setparameter("param1", bar.name);     int deletedcount = down.execute();     return ok("deleted " + deletedcount + " record(s) " + bar.name); }  }

route below:

get     /                           controllers.application.index() post    /bars2                      controllers.application.addbar()     /bars                       controllers.application.getbars()     /bars1                      controllers.application.deletebars()     /updatebar1/                controllers.application.login()  # map static resources /public folder /assets url path     /assets/*file               controllers.assets.at(path="/public", file)

what is:

  1. i using direct sql query delete, want know how can achieve same form class mapping models - data validation also. please provide pseudo code... went through below stuff, no luck

form class link

you don't need use form deleting records - for? need identifier or param search for, have 2 ways - first showing sqlupdate second ebean's method:

list<bar> bars = bar.find.where().eq("name", name).findlist(); (bar bar : bars) {     bar.delete(); }

if want delete single record @id field can (if you're sure bar id exists):

bar.find.ref(barid).delete();

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