Added URL mapping for Release attachments like on github.com (#1707)

models/attachment.go

@@ -151,6 +151,11 @@ func GetAttachmentByUUID(uuid string) (*Attachment, error) {
 	return getAttachmentByUUID(x, uuid)
 }
 
+// GetAttachmentByReleaseIDFileName returns attachment by given releaseId and fileName.
+func GetAttachmentByReleaseIDFileName(releaseID int64, fileName string) (*Attachment, error) {
+	return getAttachmentByReleaseIDFileName(x, releaseID, fileName)
+}
+
 func getAttachmentsByIssueID(e Engine, issueID int64) ([]*Attachment, error) {
 	attachments := make([]*Attachment, 0, 10)
 	return attachments, e.Where("issue_id = ? AND comment_id = 0", issueID).Find(&attachments)
@@ -171,6 +176,18 @@ func getAttachmentsByCommentID(e Engine, commentID int64) ([]*Attachment, error)
 	return attachments, x.Where("comment_id=?", commentID).Find(&attachments)
 }
 
+// getAttachmentByReleaseIDFileName return a file based on the the following infos:
+func getAttachmentByReleaseIDFileName(e Engine, releaseID int64, fileName string) (*Attachment, error) {
+	attach := &Attachment{ReleaseID: releaseID, Name: fileName}
+	has, err := e.Get(attach)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, err
+	}
+	return attach, nil
+}
+
 // DeleteAttachment deletes the given attachment and optionally the associated file.
 func DeleteAttachment(a *Attachment, remove bool) error {
 	_, err := DeleteAttachments([]*Attachment{a}, remove)

models/release.go

@@ -14,6 +14,7 @@ import (
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
+
 	api "code.gitea.io/sdk/gitea"
 	"github.com/go-xorm/builder"
 )
@@ -283,6 +284,15 @@ func GetReleasesByRepoID(repoID int64, opts FindReleasesOptions, page, pageSize
 	return rels, err
 }
 
+// GetReleasesByRepoIDAndNames returns a list of releases of repository according repoID and tagNames.
+func GetReleasesByRepoIDAndNames(repoID int64, tagNames []string) (rels []*Release, err error) {
+	err = x.
+		Desc("created_unix").
+		In("tag_name", tagNames).
+		Find(&rels, Release{RepoID: repoID})
+	return rels, err
+}
+
 // GetReleaseCountByRepoID returns the count of releases of repository
 func GetReleaseCountByRepoID(repoID int64, opts FindReleasesOptions) (int64, error) {
 	return x.Where(opts.toConds(repoID)).Count(&Release{})