diff --git a/models/repo.go b/models/repo.go
index 4f4477c9a..482c96055 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -41,20 +41,40 @@ const (
 var repoWorkingPool = sync.NewExclusivePool()
 
 var (
-	ErrRepoFileNotExist  = errors.New("Repository file does not exist")
+	// ErrRepoFileNotExist repository file does not exist error
+	ErrRepoFileNotExist = errors.New("Repository file does not exist")
+
+	// ErrRepoFileNotLoaded repository file not loaded error
 	ErrRepoFileNotLoaded = errors.New("Repository file not loaded")
-	ErrMirrorNotExist    = errors.New("Mirror does not exist")
-	ErrInvalidReference  = errors.New("Invalid reference specified")
-	ErrNameEmpty         = errors.New("Name is empty")
+
+	// ErrMirrorNotExist mirror does not exist error
+	ErrMirrorNotExist = errors.New("Mirror does not exist")
+
+	// ErrInvalidReference invalid reference specified error
+	ErrInvalidReference = errors.New("Invalid reference specified")
+
+	// ErrNameEmpty name is empty error
+	ErrNameEmpty = errors.New("Name is empty")
 )
 
 var (
-	Gitignores, Licenses, Readmes, LabelTemplates []string
+	// Gitignores contains the gitiginore files
+	Gitignores []string
+
+	// Licenses contains the license files
+	Licenses []string
+
+	// Readmes contains the readme files
+	Readmes []string
+
+	// LabelTemplates contains the label template files
+	LabelTemplates []string
 
-	// Maximum items per page in forks, watchers and stars of a repo
+	// ItemsPerPage maximum items per page in forks, watchers and stars of a repo
 	ItemsPerPage = 40
 )
 
+// LoadRepoConfig loads the repository config
 func LoadRepoConfig() {
 	// Load .gitignore and license files and readme templates.
 	types := []string{"gitignore", "license", "readme", "label"}
@@ -104,6 +124,7 @@ func LoadRepoConfig() {
 	Licenses = sortedLicenses
 }
 
+// NewRepoContext creates a new repository context
 func NewRepoContext() {
 	zip.Verbose = false
 
@@ -200,15 +221,18 @@ type Repository struct {
 	UpdatedUnix int64
 }
 
+// BeforeInsert is invoked from XORM before inserting an object of this type.
 func (repo *Repository) BeforeInsert() {
 	repo.CreatedUnix = time.Now().Unix()
 	repo.UpdatedUnix = repo.CreatedUnix
 }
 
+// BeforeUpdate is invoked from XORM before updating this object.
 func (repo *Repository) BeforeUpdate() {
 	repo.UpdatedUnix = time.Now().Unix()
 }
 
+// AfterSet is invoked from XORM after setting the value of a field of this object.
 func (repo *Repository) AfterSet(colName string, _ xorm.Cell) {
 	switch colName {
 	case "default_branch":
@@ -241,14 +265,17 @@ func (repo *Repository) MustOwner() *User {
 	return repo.mustOwner(x)
 }
 
+// FullName returns the repository full name
 func (repo *Repository) FullName() string {
 	return repo.MustOwner().Name + "/" + repo.Name
 }
 
+// HTMLURL returns the repository HTML URL
 func (repo *Repository) HTMLURL() string {
 	return setting.AppURL + repo.FullName()
 }
 
+// APIFormat converts a Repository to api.Repository
 // Arguments that are allowed to be nil: permission
 func (repo *Repository) APIFormat(permission *api.Permission) *api.Repository {
 	cloneLink := repo.CloneLink()
@@ -284,6 +311,7 @@ func (repo *Repository) getOwner(e Engine) (err error) {
 	return err
 }
 
+// GetOwner returns the repository owner
 func (repo *Repository) GetOwner() error {
 	return repo.getOwner(x)
 }
@@ -381,11 +409,13 @@ func (repo *Repository) IssueStats(uid int64, filterMode int, isPull bool) (int6
 	return GetRepoIssueStats(repo.ID, uid, filterMode, isPull)
 }
 
+// GetMirror sets the repository mirror, returns an error upon failure
 func (repo *Repository) GetMirror() (err error) {
 	repo.Mirror, err = GetMirrorByRepoID(repo.ID)
 	return err
 }
 
+// GetBaseRepo returns the base repository
 func (repo *Repository) GetBaseRepo() (err error) {
 	if !repo.IsFork {
 		return nil
@@ -399,31 +429,38 @@ func (repo *Repository) repoPath(e Engine) string {
 	return RepoPath(repo.mustOwner(e).Name, repo.Name)
 }
 
+// RepoPath returns the repository path
 func (repo *Repository) RepoPath() string {
 	return repo.repoPath(x)
 }
 
+// GitConfigPath returns the repository git config path
 func (repo *Repository) GitConfigPath() string {
 	return filepath.Join(repo.RepoPath(), "config")
 }
 
+// RelLink returns the repository relative link
 func (repo *Repository) RelLink() string {
 	return "/" + repo.FullName()
 }
 
+// Link returns the repository link
 func (repo *Repository) Link() string {
 	return setting.AppSubURL + "/" + repo.FullName()
 }
 
+// ComposeCompareURL returns the repository comparison URL
 func (repo *Repository) ComposeCompareURL(oldCommitID, newCommitID string) string {
 	return fmt.Sprintf("%s/%s/compare/%s...%s", repo.MustOwner().Name, repo.Name, oldCommitID, newCommitID)
 }
 
+// HasAccess returns true when user has access to this repository
 func (repo *Repository) HasAccess(u *User) bool {
 	has, _ := HasAccess(u, repo, AccessModeRead)
 	return has
 }
 
+// IsOwnedBy returns true when user owns this repository
 func (repo *Repository) IsOwnedBy(userID int64) bool {
 	return repo.OwnerID == userID
 }
@@ -438,7 +475,7 @@ func (repo *Repository) CanEnablePulls() bool {
 	return !repo.IsMirror
 }
 
-// AllowPulls returns true if repository meets the requirements of accepting pulls and has them enabled.
+// AllowsPulls returns true if repository meets the requirements of accepting pulls and has them enabled.
 func (repo *Repository) AllowsPulls() bool {
 	return repo.CanEnablePulls() && repo.EnablePulls
 }
@@ -448,6 +485,7 @@ func (repo *Repository) CanEnableEditor() bool {
 	return !repo.IsMirror
 }
 
+// NextIssueIndex returns the next issue index
 // FIXME: should have a mutex to prevent producing same index for two issues that are created
 // closely enough.
 func (repo *Repository) NextIssueIndex() int64 {
@@ -455,22 +493,23 @@ func (repo *Repository) NextIssueIndex() int64 {
 }
 
 var (
-	DescPattern = regexp.MustCompile(`https?://\S+`)
+	descPattern = regexp.MustCompile(`https?://\S+`)
 )
 
-// DescriptionHtml does special handles to description and return HTML string.
-func (repo *Repository) DescriptionHtml() template.HTML {
+// DescriptionHTML does special handles to description and return HTML string.
+func (repo *Repository) DescriptionHTML() template.HTML {
 	sanitize := func(s string) string {
 		return fmt.Sprintf(`<a href="%[1]s" target="_blank">%[1]s</a>`, s)
 	}
-	return template.HTML(DescPattern.ReplaceAllStringFunc(markdown.Sanitizer.Sanitize(repo.Description), sanitize))
+	return template.HTML(descPattern.ReplaceAllStringFunc(markdown.Sanitizer.Sanitize(repo.Description), sanitize))
 }
 
+// LocalCopyPath returns the local repository copy path
 func (repo *Repository) LocalCopyPath() string {
 	return path.Join(setting.AppDataPath, "tmp/local-rpeo", com.ToStr(repo.ID))
 }
 
-// UpdateLocalCopy pulls latest changes of given branch from repoPath to localPath.
+// UpdateLocalCopyBranch pulls latest changes of given branch from repoPath to localPath.
 // It creates a new clone if local copy does not exist.
 // This function checks out target branch by default, it is safe to assume subsequent
 // operations are operating against target branch when caller has confidence for no race condition.
@@ -575,6 +614,7 @@ func (repo *Repository) CloneLink() (cl *CloneLink) {
 	return repo.cloneLink(false)
 }
 
+// MigrateRepoOptions contains the repository migrate options
 type MigrateRepoOptions struct {
 	Name        string
 	Description string
@@ -711,7 +751,7 @@ func createUpdateHook(repoPath string) error {
 		fmt.Sprintf(tplUpdateHook, setting.ScriptType, "\""+setting.AppPath+"\"", setting.CustomConf))
 }
 
-// Finish migrating repository and/or wiki with things that don't need to be done for mirrors.
+// CleanUpMigrateInfo finishes migrating repository and/or wiki with things that don't need to be done for mirrors.
 func CleanUpMigrateInfo(repo *Repository) (*Repository, error) {
 	repoPath := repo.RepoPath()
 	if err := createUpdateHook(repoPath); err != nil {
@@ -759,6 +799,7 @@ func initRepoCommit(tmpPath string, sig *git.Signature) (err error) {
 	return nil
 }
 
+// CreateRepoOptions contains the create repository options
 type CreateRepoOptions struct {
 	Name        string
 	Description string
@@ -897,6 +938,7 @@ var (
 	reservedRepoPatterns = []string{"*.git", "*.wiki"}
 )
 
+// IsUsableRepoName returns true when repository is usable
 func IsUsableRepoName(name string) error {
 	return isUsableName(reservedRepoNames, reservedRepoPatterns, name)
 }
@@ -1030,6 +1072,7 @@ func CountUserRepositories(userID int64, private bool) int64 {
 	return countRepositories(userID, private)
 }
 
+// Repositories returns all repositories
 func Repositories(page, pageSize int) (_ []*Repository, err error) {
 	repos := make([]*Repository, 0, pageSize)
 	return repos, x.Limit(pageSize, (page-1)*pageSize).Asc("id").Find(&repos)
@@ -1275,6 +1318,7 @@ func updateRepository(e Engine, repo *Repository, visibilityChanged bool) (err e
 	return nil
 }
 
+// UpdateRepository updates a repository
 func UpdateRepository(repo *Repository, visibilityChanged bool) (err error) {
 	sess := x.NewSession()
 	defer sessionRelease(sess)
@@ -1474,7 +1518,7 @@ func GetUserRepositories(userID int64, private bool, page, pageSize int) ([]*Rep
 	return repos, sess.Find(&repos)
 }
 
-// GetUserRepositories returns a list of mirror repositories of given user.
+// GetUserMirrorRepositories returns a list of mirror repositories of given user.
 func GetUserMirrorRepositories(userID int64) ([]*Repository, error) {
 	repos := make([]*Repository, 0, 10)
 	return repos, x.
@@ -1502,6 +1546,7 @@ func GetRepositoryCount(u *User) (int64, error) {
 	return getRepositoryCount(x, u)
 }
 
+// SearchRepoOptions holds the search options
 type SearchRepoOptions struct {
 	Keyword  string
 	OwnerID  int64
@@ -1670,6 +1715,7 @@ func GitFsck() {
 	}
 }
 
+// GitGcRepos calls 'git gc' to remove unnecessary files and optimize the local repository
 func GitGcRepos() error {
 	args := append([]string{"gc"}, setting.Git.GCArgs...)
 	return x.
@@ -1712,6 +1758,7 @@ func repoStatsCheck(checker *repoChecker) {
 	}
 }
 
+// CheckRepoStats checks the repository stats
 func CheckRepoStats() {
 	if taskStatusTable.IsRunning(checkRepos) {
 		return
@@ -1806,6 +1853,7 @@ func CheckRepoStats() {
 	// ***** END: Repository.NumForks *****
 }
 
+// RepositoryList contains a list of repositories
 type RepositoryList []*Repository
 
 func (repos RepositoryList) loadAttributes(e Engine) error {
@@ -1838,10 +1886,12 @@ func (repos RepositoryList) loadAttributes(e Engine) error {
 	return nil
 }
 
+// LoadAttributes loads the attributes for the given RepositoryList
 func (repos RepositoryList) LoadAttributes() error {
 	return repos.loadAttributes(x)
 }
 
+// MirrorRepositoryList contains the mirror repositories
 type MirrorRepositoryList []*Repository
 
 func (repos MirrorRepositoryList) loadAttributes(e Engine) error {
@@ -1876,6 +1926,7 @@ func (repos MirrorRepositoryList) loadAttributes(e Engine) error {
 	return nil
 }
 
+// LoadAttributes loads the attributes for the given MirrorRepositoryList
 func (repos MirrorRepositoryList) LoadAttributes() error {
 	return repos.loadAttributes(x)
 }
@@ -1925,7 +1976,7 @@ func watchRepo(e Engine, userID, repoID int64, watch bool) (err error) {
 	return err
 }
 
-// Watch or unwatch repository.
+// WatchRepo watch or unwatch repository.
 func WatchRepo(userID, repoID int64, watch bool) (err error) {
 	return watchRepo(x, userID, repoID, watch)
 }
@@ -1940,7 +1991,7 @@ func GetWatchers(repoID int64) ([]*Watch, error) {
 	return getWatchers(x, repoID)
 }
 
-// Repository.GetWatchers returns range of users watching given repository.
+// GetWatchers returns range of users watching given repository.
 func (repo *Repository) GetWatchers(page int) ([]*User, error) {
 	users := make([]*User, 0, ItemsPerPage)
 	sess := x.
@@ -1993,13 +2044,14 @@ func NotifyWatchers(act *Action) error {
 // /_______  /|__| (____  /__|
 //         \/           \/
 
+// Star contains the star information
 type Star struct {
 	ID     int64 `xorm:"pk autoincr"`
 	UID    int64 `xorm:"UNIQUE(s)"`
 	RepoID int64 `xorm:"UNIQUE(s)"`
 }
 
-// Star or unstar repository.
+// StarRepo star or unstar repository.
 func StarRepo(userID, repoID int64, star bool) (err error) {
 	if star {
 		if IsStaring(userID, repoID) {
@@ -2031,6 +2083,7 @@ func IsStaring(userID, repoID int64) bool {
 	return has
 }
 
+// GetStargazers returns the users who gave stars to this repository
 func (repo *Repository) GetStargazers(page int) ([]*User, error) {
 	users := make([]*User, 0, ItemsPerPage)
 	sess := x.
@@ -2060,6 +2113,7 @@ func HasForkedRepo(ownerID, repoID int64) (*Repository, bool) {
 	return repo, has
 }
 
+// ForkRepository forks a repository
 func ForkRepository(u *User, oldRepo *Repository, name, desc string) (_ *Repository, err error) {
 	repo := &Repository{
 		OwnerID:       u.ID,
@@ -2109,6 +2163,7 @@ func ForkRepository(u *User, oldRepo *Repository, name, desc string) (_ *Reposit
 	return repo, sess.Commit()
 }
 
+// GetForks returns all the forks of the repository
 func (repo *Repository) GetForks() ([]*Repository, error) {
 	forks := make([]*Repository, 0, repo.NumForks)
 	return forks, x.Find(&forks, &Repository{ForkID: repo.ID})
@@ -2122,6 +2177,7 @@ func (repo *Repository) GetForks() ([]*Repository, error) {
 //         \/             \/     \/     \/     \/
 //
 
+// CreateNewBranch creates a new repository branch
 func (repo *Repository) CreateNewBranch(doer *User, oldBranchName, branchName string) (err error) {
 	repoWorkingPool.CheckIn(com.ToStr(repo.ID))
 	defer repoWorkingPool.CheckOut(com.ToStr(repo.ID))
diff --git a/models/repo_collaboration.go b/models/repo_collaboration.go
index e5be72989..0561ad86b 100644
--- a/models/repo_collaboration.go
+++ b/models/repo_collaboration.go
@@ -16,6 +16,7 @@ type Collaboration struct {
 	Mode   AccessMode `xorm:"DEFAULT 2 NOT NULL"`
 }
 
+// ModeI18nKey returns the collaboration mode I18n Key
 func (c *Collaboration) ModeI18nKey() string {
 	switch c.Mode {
 	case AccessModeRead:
diff --git a/models/repo_editor.go b/models/repo_editor.go
index ba34a999f..0d821f9f8 100644
--- a/models/repo_editor.go
+++ b/models/repo_editor.go
@@ -50,6 +50,7 @@ func discardLocalRepoBranchChanges(localPath, branch string) error {
 	return nil
 }
 
+// DiscardLocalRepoBranchChanges discards the local repository branch changes
 func (repo *Repository) DiscardLocalRepoBranchChanges(branch string) error {
 	return discardLocalRepoBranchChanges(repo.LocalCopyPath(), branch)
 }
@@ -66,10 +67,12 @@ func checkoutNewBranch(repoPath, localPath, oldBranch, newBranch string) error {
 	return nil
 }
 
+// CheckoutNewBranch checks out a new branch
 func (repo *Repository) CheckoutNewBranch(oldBranch, newBranch string) error {
 	return checkoutNewBranch(repo.RepoPath(), repo.LocalCopyPath(), oldBranch, newBranch)
 }
 
+// UpdateRepoFileOptions holds the repository file update options
 type UpdateRepoFileOptions struct {
 	LastCommitID string
 	OldBranch    string
@@ -223,6 +226,7 @@ func (repo *Repository) GetDiffPreview(branch, treePath, content string) (diff *
 //         \/     \/          \/          \/       \/                 \/
 //
 
+// DeleteRepoFileOptions holds the repository delete file options
 type DeleteRepoFileOptions struct {
 	LastCommitID string
 	OldBranch    string
@@ -231,6 +235,7 @@ type DeleteRepoFileOptions struct {
 	Message      string
 }
 
+// DeleteRepoFile deletes a repository file
 func (repo *Repository) DeleteRepoFile(doer *User, opts DeleteRepoFileOptions) (err error) {
 	repoWorkingPool.CheckIn(com.ToStr(repo.ID))
 	defer repoWorkingPool.CheckOut(com.ToStr(repo.ID))
@@ -351,6 +356,7 @@ func NewUpload(name string, buf []byte, file multipart.File) (_ *Upload, err err
 	return upload, nil
 }
 
+// GetUploadByUUID returns the Upload by UUID
 func GetUploadByUUID(uuid string) (*Upload, error) {
 	upload := &Upload{UUID: uuid}
 	has, err := x.Get(upload)
@@ -362,6 +368,7 @@ func GetUploadByUUID(uuid string) (*Upload, error) {
 	return upload, nil
 }
 
+// GetUploadsByUUIDs returns multiple uploads by UUIDS
 func GetUploadsByUUIDs(uuids []string) ([]*Upload, error) {
 	if len(uuids) == 0 {
 		return []*Upload{}, nil
@@ -372,6 +379,7 @@ func GetUploadsByUUIDs(uuids []string) ([]*Upload, error) {
 	return uploads, x.In("uuid", uuids).Find(&uploads)
 }
 
+// DeleteUploads deletes multiple uploads
 func DeleteUploads(uploads ...*Upload) (err error) {
 	if len(uploads) == 0 {
 		return nil
@@ -407,10 +415,12 @@ func DeleteUploads(uploads ...*Upload) (err error) {
 	return sess.Commit()
 }
 
+// DeleteUpload delete a upload
 func DeleteUpload(u *Upload) error {
 	return DeleteUploads(u)
 }
 
+// DeleteUploadByUUID deletes a upload by UUID
 func DeleteUploadByUUID(uuid string) error {
 	upload, err := GetUploadByUUID(uuid)
 	if err != nil {
@@ -427,6 +437,7 @@ func DeleteUploadByUUID(uuid string) error {
 	return nil
 }
 
+// UploadRepoFileOptions contains the uploaded repository file options
 type UploadRepoFileOptions struct {
 	LastCommitID string
 	OldBranch    string
@@ -436,6 +447,7 @@ type UploadRepoFileOptions struct {
 	Files        []string // In UUID format.
 }
 
+// UploadRepoFiles uploads files to a repository
 func (repo *Repository) UploadRepoFiles(doer *User, opts UploadRepoFileOptions) (err error) {
 	if len(opts.Files) == 0 {
 		return nil