Fix projects mode bugs (#29593)

Fix for regressions introduced by #28805 

Enabled projects on repos created before the PR weren't detected. Also,
the way projects mode was detected in settings didn't match the way it
was detected on permission check, which leads to confusion.

Co-authored-by: Giteabot <teabot@gitea.io>

models/fixtures/repo_unit.yml

@@ -520,7 +520,6 @@
   id: 75
   repo_id: 1
   type: 8
-  config: "{\"ProjectsMode\":\"all\"}"
   created_unix: 946684810
 
 -

models/repo/repo.go

@@ -412,9 +412,11 @@ func (repo *Repository) MustGetUnit(ctx context.Context, tp unit.Type) *RepoUnit
 			Config: new(ActionsConfig),
 		}
 	} else if tp == unit.TypeProjects {
+		cfg := new(ProjectsConfig)
+		cfg.ProjectsMode = ProjectsModeNone
 		return &RepoUnit{
 			Type:   tp,
-			Config: new(ProjectsConfig),
+			Config: cfg,
 		}
 	}
 

models/repo/repo_unit.go

@@ -236,7 +236,7 @@ func (cfg *ProjectsConfig) GetProjectsMode() ProjectsMode {
 		return cfg.ProjectsMode
 	}
 
-	return ProjectsModeNone
+	return ProjectsModeAll
 }
 
 func (cfg *ProjectsConfig) IsProjectsAllowed(m ProjectsMode) bool {

templates/repo/settings/options.tmpl

@@ -460,19 +460,19 @@
 					</p>
 					<div class="ui dropdown selection">
 						<select name="projects_mode">
-							<option value="repo" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.ProjectsMode "repo")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_repo"}}</option>
-							<option value="owner" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.ProjectsMode "owner")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_owner"}}</option>
-							<option value="all" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.ProjectsMode "all")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_all"}}</option>
+							<option value="repo" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.GetProjectsMode "repo")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_repo"}}</option>
+							<option value="owner" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.GetProjectsMode "owner")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_owner"}}</option>
+							<option value="all" {{if or (not $isProjectsEnabled) (eq $projectsUnit.ProjectsConfig.GetProjectsMode "all")}}selected{{end}}>{{ctx.Locale.Tr "repo.settings.projects_mode_all"}}</option>
 						</select>
 						{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						<div class="default text">
-							{{if (eq $projectsUnit.ProjectsConfig.ProjectsMode "repo")}}
+							{{if (eq $projectsUnit.ProjectsConfig.GetProjectsMode "repo")}}
 								{{ctx.Locale.Tr "repo.settings.projects_mode_repo"}}
 							{{end}}
-							{{if (eq $projectsUnit.ProjectsConfig.ProjectsMode "owner")}}
+							{{if (eq $projectsUnit.ProjectsConfig.GetProjectsMode "owner")}}
 								{{ctx.Locale.Tr "repo.settings.projects_mode_owner"}}
 							{{end}}
-							{{if (eq $projectsUnit.ProjectsConfig.ProjectsMode "all")}}
+							{{if (eq $projectsUnit.ProjectsConfig.GetProjectsMode "all")}}
 								{{ctx.Locale.Tr "repo.settings.projects_mode_all"}}
 							{{end}}
 						</div>