pt. 4 - AngularJS POST and @RepositoryEventHandler

src/main/java/com/bayer/burp/repository/SpringDataRestEventHandler.java

@@ -0,0 +1,51 @@
+package com.bayer.burp.repository;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.rest.core.annotation.HandleBeforeCreate;
+import org.springframework.data.rest.core.annotation.RepositoryEventHandler;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+
+import com.bayer.burp.domain.Burp;
+import com.bayer.burp.domain.Tag;
+
+// see https://spring.io/blog/2015/10/28/react-js-and-spring-data-rest-part-5-security
+@Component
+@RepositoryEventHandler(Burp.class)
+public class SpringDataRestEventHandler {
+
+	private final UserRepository userRepository;
+	private final TagRepository tagRepository;
+	
+	private static final Pattern TAG_PATTERN = Pattern.compile("(?:\\s|\\A|^)[#]+([A-Za-z0-9-_]+)");
+
+	@Autowired
+	public SpringDataRestEventHandler(UserRepository userRepository, TagRepository tagRepository) {
+		this.userRepository = userRepository;
+		this.tagRepository = tagRepository;
+	}
+
+	@HandleBeforeCreate
+	public void applyUserInformationUsingSecurityContext(Burp burp) {
+		
+		String username = SecurityContextHolder.getContext().getAuthentication().getName();
+		burp.setUser(userRepository.findByName(username));
+		
+		Matcher matcher = TAG_PATTERN.matcher(burp.getText());
+		List<Tag> tags = new ArrayList<Tag>();
+		while (matcher.find()) {
+			Tag tag = tagRepository.findByName(matcher.group().replace('#', ' ').trim());
+			// TODO create tag if doesn't exist
+			tags.add(tag) ;
+		}
+		burp.setTags(tags);
+		
+		burp.setTimestamp(new Date());
+	}
+}

src/main/java/com/bayer/burp/repository/TagRepository.java

@@ -1,10 +1,15 @@
 package com.bayer.burp.repository;
 
 import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.data.rest.core.annotation.RestResource;
 import org.springframework.security.access.prepost.PreAuthorize;
 
 import com.bayer.burp.domain.Tag;
 
 @PreAuthorize("hasRole('ROLE_USER')")
 public interface TagRepository extends PagingAndSortingRepository<Tag, Long> {
+	
+	@RestResource(exported = false)
+	Tag findByName(String name);
+	
 }

src/main/java/com/bayer/burp/repository/UserRepository.java

@@ -1,6 +1,7 @@
 package com.bayer.burp.repository;
 
 import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.data.rest.core.annotation.RestResource;
 import org.springframework.security.access.prepost.PreAuthorize;
 
 import com.bayer.burp.domain.User;
@@ -16,4 +17,7 @@ public interface UserRepository extends PagingAndSortingRepository<User, Long> {
 	@Override
 	void delete(User user);
 	
+	@RestResource(exported = false)
+	User findByName(String name);
+
 }

src/main/resources/static/js/controllers.js

@@ -1,7 +1,8 @@
 var burpControllers = angular.module('burpControllers', ['ngResource']);
 
-burpControllers.controller('BurpListCtrl', [ '$scope', '$resource', function($scope, $resource) {
+burpControllers.controller('BurpListCtrl', [ '$scope', '$resource', '$http', function($scope, $resource, $http) {
 
+	$scope.initList = function() {
 		var burps = $resource('/burps/search/findFirst8ByOrderByTimestampDesc').get();
 	
 		burps.$promise.then(function(data) {
@@ -12,6 +13,27 @@ burpControllers.controller('BurpListCtrl', [ '$scope', '$resource', function($sc
 				$scope.burps[i].tags = $resource($scope.burps[i]._links.tags.href).get();
 			}
 		});
+	}
+	
+	$scope.doBurp = function() {
+		
+		// simple HTTP POST
+		$http.post('/burps', { "text" : $scope.text }).success(function() {
+			console.log('REFRESH');
+			$scope.initList();
+        });
+		
+		// Resource (might be moved into a service)
+//		var Burp = $resource('/burps');
+//
+//		var newBurp = new Burp({
+//			"text" : $scope.text
+//		});
+//		
+//		newBurp.$save();
+	};
+
+	
 } ]);
 
 burpControllers.controller('TagCtrl', [ '$scope', '$routeParams', '$resource', function($scope, $routeParams, $resource) {

src/main/resources/static/partials/list.html

@@ -1,6 +1,15 @@
-<div>
+<div ng-init="initList()">
 	<div>
 		<div>
+			<form role="form" ng-submit="doBurp()">
+				<div>
+					<input type="text" ng-model="text" placeholder="Your thoughts on today's menu" />
+				</div>
+				<div>
+					<input type="submit" value="Send" />
+				</div>
+			</form>
+		
 			<div class="burp" ng-repeat="burp in burps">
 				<div class="user">{{burp.user.name}}</div>
 				<div class="date">{{burp.timestamp | date:'HH:mm:ss dd.MM.yyyy'}}</div>