Avoid database access in model

Modified to pass assignee from outside of model instead.

src/main/scala/gitbucket/core/api/ApiPullRequest.scala

@@ -2,10 +2,6 @@ package gitbucket.core.api
 
 import gitbucket.core.model.{Account, Issue, IssueComment, PullRequest}
 import java.util.Date
-import gitbucket.core.service.AccountService
-import gitbucket.core.model.Profile._
-import gitbucket.core.model.Profile.profile.blockingApi._
-
 
 /**
  * https://developer.github.com/v3/pulls/
@@ -23,7 +19,7 @@ case class ApiPullRequest(
   title: String,
   body: String,
   user: ApiUser,
-  assignee: Either[ApiUser,AnyRef]) extends AccountService {
+  assignee: Option[ApiUser]){
   val html_url            = ApiPath(s"${base.repo.html_url.path}/pull/${number}")
   //val diff_url            = ApiPath(s"${base.repo.html_url.path}/pull/${number}.diff")
   //val patch_url           = ApiPath(s"${base.repo.html_url.path}/pull/${number}.patch")
@@ -43,8 +39,9 @@ object ApiPullRequest{
     headRepo: ApiRepository,
     baseRepo: ApiRepository,
     user: ApiUser,
+    assignee: Option[ApiUser],
     mergedComment: Option[(IssueComment, Account)]
-  )(implicit s: Session): ApiPullRequest =
+  ): ApiPullRequest =
     ApiPullRequest(
       number     = issue.issueId,
       updated_at = issue.updatedDate,
@@ -64,7 +61,7 @@ object ApiPullRequest{
       title      = issue.title,
       body       = issue.content.getOrElse(""),
       user       = user,
-      assignee   = if (issue.assignedUserName == None) Right(null) else Left(ApiUser(getAccountByUserName(issue.assignedUserName.getOrElse("")).get))
+      assignee   = assignee
     )
 
   case class Commit(
@@ -75,6 +72,4 @@ object ApiPullRequest{
     val user = repo.owner
   }
 
-  def getAccountByUserName(userName: String, includeRemoved: Boolean = false)(implicit s: Session): Option[Account] = 
-    Accounts filter(t => (t.userName === userName.bind) && (t.removed === false.bind, !includeRemoved)) firstOption
 }

src/main/scala/gitbucket/core/api/JsonFormat.scala

@@ -20,7 +20,7 @@ object JsonFormat {
       { case x: Date => JString(parserISO.print(new DateTime(x).withZone(DateTimeZone.UTC))) }
     )
   ) + FieldSerializer[ApiUser]() +
-    FieldSerializer[ApiPullRequest](FieldSerializer.ignore("gitbucket$core$service$AccountService$$logger")) +
+    FieldSerializer[ApiPullRequest]() +
     FieldSerializer[ApiRepository]() +
     FieldSerializer[ApiCommitListItem.Parent]() +
     FieldSerializer[ApiCommitListItem]() +

src/main/scala/gitbucket/core/controller/ApiController.scala

@@ -498,7 +498,7 @@ trait ApiControllerBase extends ControllerBase {
     val condition = IssueSearchCondition(request)
     val baseOwner = getAccountByUserName(repository.owner).get
 
-    val issues: List[(Issue, Account, Int, PullRequest, Repository, Account, Account)] =
+    val issues: List[(Issue, Account, Int, PullRequest, Repository, Account, Option[Account])] =
       searchPullRequestByApi(
         condition = condition,
         offset    = (page - 1) * PullRequestLimit,
@@ -513,6 +513,7 @@ trait ApiControllerBase extends ControllerBase {
         headRepo      = ApiRepository(headRepo, ApiUser(headOwner)),
         baseRepo      = ApiRepository(repository, ApiUser(baseOwner)),
         user          = ApiUser(issueUser),
+        assignee      = assignee.map(ApiUser.apply),
         mergedComment = getMergedComment(repository.owner, repository.name, issue.issueId)
       )
     })
@@ -529,6 +530,7 @@ trait ApiControllerBase extends ControllerBase {
       baseOwner <- users.get(repository.owner)
       headOwner <- users.get(pullRequest.requestUserName)
       issueUser <- users.get(issue.openedUserName)
+      assignee  =  issue.assignedUserName.flatMap { userName => getAccountByUserName(userName, false) }
       headRepo  <- getRepository(pullRequest.requestUserName, pullRequest.requestRepositoryName)
     } yield {
       JsonFormat(ApiPullRequest(
@@ -537,6 +539,7 @@ trait ApiControllerBase extends ControllerBase {
         headRepo      = ApiRepository(headRepo, ApiUser(headOwner)),
         baseRepo      = ApiRepository(repository, ApiUser(baseOwner)),
         user          = ApiUser(issueUser),
+        assignee      = assignee.map(ApiUser.apply),
         mergedComment = getMergedComment(repository.owner, repository.name, issue.issueId)
       ))
     }) getOrElse NotFound()

src/main/scala/gitbucket/core/service/IssuesService.scala

@@ -199,14 +199,14 @@ trait IssuesService {
    * @return (issue, issueUser, commentCount, pullRequest, headRepo, headOwner)
    */
   def searchPullRequestByApi(condition: IssueSearchCondition, offset: Int, limit: Int, repos: (String, String)*)
-                            (implicit s: Session): List[(Issue, Account, Int, PullRequest, Repository, Account, Account)] = {
+                            (implicit s: Session): List[(Issue, Account, Int, PullRequest, Repository, Account, Option[Account])] = {
     // get issues and comment count and labels
     searchIssueQueryBase(condition, true, offset, limit, repos)
       .join    (PullRequests).on { case t1 ~ t2 ~ i ~ t3                     => t3.byPrimaryKey(t1.userName, t1.repositoryName, t1.issueId) }
       .join    (Repositories).on { case t1 ~ t2 ~ i ~ t3 ~ t4                => t4.byRepository(t1.userName, t1.repositoryName) }
       .join    (Accounts    ).on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5           => t5.userName === t1.openedUserName }
       .join    (Accounts    ).on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6      => t6.userName === t4.userName }
-      .join(Accounts    ).on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 ~ t7 => t7.userName === t1.assignedUserName}
+      .joinLeft(Accounts    ).on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 ~ t7 => t7.userName === t1.assignedUserName}
       .sortBy { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 ~ t7 => i asc }
       .map    { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 ~ t7 => (t1, t5, t2.commentCount, t3, t4, t6, t7) }
       .list

src/main/scala/gitbucket/core/service/WebHookService.scala

@@ -232,12 +232,14 @@ trait WebHookPullRequestService extends WebHookService {
         baseOwner <- users.get(repository.owner)
         headOwner <- users.get(pullRequest.requestUserName)
         issueUser <- users.get(issue.openedUserName)
+        assignee  =  issue.assignedUserName.flatMap { userName => getAccountByUserName(userName, false) }
         headRepo  <- getRepository(pullRequest.requestUserName, pullRequest.requestRepositoryName)
       } yield {
         WebHookPullRequestPayload(
           action         = action,
           issue          = issue,
           issueUser      = issueUser,
+          assignee       = assignee,
           pullRequest    = pullRequest,
           headRepository = headRepo,
           headOwner      = headOwner,
@@ -273,12 +275,14 @@ trait WebHookPullRequestService extends WebHookService {
     import WebHookService._
     for{
       ((issue, issueUser, pullRequest, baseOwner, headOwner), webHooks) <- getPullRequestsByRequestForWebhook(requestRepository.owner, requestRepository.name, requestBranch)
+      assignee =  issue.assignedUserName.flatMap { userName => getAccountByUserName(userName, false) }
       baseRepo <- getRepository(pullRequest.userName, pullRequest.repositoryName)
     } yield {
       val payload = WebHookPullRequestPayload(
         action         = action,
         issue          = issue,
         issueUser      = issueUser,
+        assignee       = assignee,
         pullRequest    = pullRequest,
         headRepository = requestRepository,
         headOwner      = headOwner,
@@ -306,6 +310,7 @@ trait WebHookPullRequestReviewCommentService extends WebHookService {
         baseOwner <- users.get(repository.owner)
         headOwner <- users.get(pullRequest.requestUserName)
         issueUser <- users.get(issue.openedUserName)
+        assignee  =  issue.assignedUserName.flatMap { userName => getAccountByUserName(userName, false) }
         headRepo  <- getRepository(pullRequest.requestUserName, pullRequest.requestRepositoryName)
       } yield {
         WebHookPullRequestReviewCommentPayload(
@@ -313,6 +318,7 @@ trait WebHookPullRequestReviewCommentService extends WebHookService {
           comment        = comment,
           issue          = issue,
           issueUser      = issueUser,
+          assignee       = assignee,
           pullRequest    = pullRequest,
           headRepository = headRepo,
           headOwner      = headOwner,
@@ -424,13 +430,14 @@ object WebHookService {
     def apply(action: String,
         issue: Issue,
         issueUser: Account,
+        assignee: Option[Account],
         pullRequest: PullRequest,
         headRepository: RepositoryInfo,
         headOwner: Account,
         baseRepository: RepositoryInfo,
         baseOwner: Account,
         sender: Account,
-        mergedComment: Option[(IssueComment, Account)])(implicit s: Session): WebHookPullRequestPayload = {
+        mergedComment: Option[(IssueComment, Account)]): WebHookPullRequestPayload = {
 
       val headRepoPayload = ApiRepository(headRepository, headOwner)
       val baseRepoPayload = ApiRepository(baseRepository, baseOwner)
@@ -441,6 +448,7 @@ object WebHookService {
         headRepo      = headRepoPayload,
         baseRepo      = baseRepoPayload,
         user          = ApiUser(issueUser),
+        assignee      = assignee.map(ApiUser.apply),
         mergedComment = mergedComment
       )
 
@@ -495,6 +503,7 @@ object WebHookService {
       comment: CommitComment,
       issue: Issue,
       issueUser: Account,
+      assignee: Option[Account],
       pullRequest: PullRequest,
       headRepository: RepositoryInfo,
       headOwner: Account,
@@ -502,7 +511,7 @@ object WebHookService {
       baseOwner: Account,
       sender: Account,
       mergedComment: Option[(IssueComment, Account)]
-    )(implicit s: Session) : WebHookPullRequestReviewCommentPayload = {
+    ): WebHookPullRequestReviewCommentPayload = {
       val headRepoPayload = ApiRepository(headRepository, headOwner)
       val baseRepoPayload = ApiRepository(baseRepository, baseOwner)
       val senderPayload = ApiUser(sender)
@@ -521,6 +530,7 @@ object WebHookService {
           headRepo      = headRepoPayload,
           baseRepo      = baseRepoPayload,
           user          = ApiUser(issueUser),
+          assignee      = assignee.map(ApiUser.apply),
           mergedComment = mergedComment
         ),
         repository   = baseRepoPayload,

src/test/scala/gitbucket/core/api/JsonFormatSpec.scala

@@ -282,7 +282,7 @@ class JsonFormatSpec extends FunSuite {
     title         = "new-feature",
     body          = "Please pull these awesome changes",
     user          = apiUser,
-    assignee      = Left(apiUser)
+    assignee      = Some(apiUser)
   )
 
   val apiPullRequestJson = s"""{