add attribute remove_source_branch_after_merge to projects

Closes #200

Author: apricote

gitlab/data_source_gitlab_project.go

@@ -107,6 +107,11 @@ func dataSourceGitlabProject() *schema.Resource {
 				Optional: true,
 				Computed: true,
 			},
+			"remove_source_branch_after_merge": {
+				Type:     schema.TypeBool,
+				Optional: true,
+				Computed: true,
+			},
 		},
 	}
 }
@@ -141,5 +146,6 @@ func dataSourceGitlabProjectRead(d *schema.ResourceData, meta interface{}) error
 	d.Set("web_url", found.WebURL)
 	d.Set("runners_token", found.RunnersToken)
 	d.Set("archived", found.Archived)
+	d.Set("remove_source_branch_after_merge", found.RemoveSourceBranchAfterMerge)
 	return nil
 }

gitlab/resource_gitlab_project.go

@@ -189,6 +189,10 @@ var resourceGitLabProjectSchema = map[string]*schema.Schema{
 		Type:     schema.TypeBool,
 		Optional: true,
 	},
+	"remove_source_branch_after_merge": {
+		Type:     schema.TypeBool,
+		Optional: true,
+	},
 }
 
 func resourceGitlabProject() *schema.Resource {
@@ -232,6 +236,7 @@ func resourceGitlabProjectSetToState(d *schema.ResourceData, project *gitlab.Pro
 	d.Set("shared_with_groups", flattenSharedWithGroupsOptions(project))
 	d.Set("tags", project.TagList)
 	d.Set("archived", project.Archived)
+	d.Set("remove_source_branch_after_merge", project.RemoveSourceBranchAfterMerge)
 }
 
 func resourceGitlabProjectCreate(d *schema.ResourceData, meta interface{}) error {
@@ -253,6 +258,7 @@ func resourceGitlabProjectCreate(d *schema.ResourceData, meta interface{}) error
 		OnlyAllowMergeIfPipelineSucceeds: gitlab.Bool(d.Get("only_allow_merge_if_pipeline_succeeds").(bool)),
 		OnlyAllowMergeIfAllDiscussionsAreResolved: gitlab.Bool(d.Get("only_allow_merge_if_all_discussions_are_resolved").(bool)),
 		SharedRunnersEnabled:                      gitlab.Bool(d.Get("shared_runners_enabled").(bool)),
+		RemoveSourceBranchAfterMerge:              gitlab.Bool(d.Get("remove_source_branch_after_merge").(bool)),
 	}
 
 	// need to manage partial state since project creation may require
@@ -275,6 +281,7 @@ func resourceGitlabProjectCreate(d *schema.ResourceData, meta interface{}) error
 		"only_allow_merge_if_pipeline_succeeds",
 		"only_allow_merge_if_all_discussions_are_resolved",
 		"shared_runners_enabled",
+		"remove_source_branch_after_merge",
 	}
 
 	if v, ok := d.GetOk("path"); ok {
@@ -473,6 +480,11 @@ func resourceGitlabProjectUpdate(d *schema.ResourceData, meta interface{}) error
 		updatedProperties = append(updatedProperties, "lfs_enabled")
 	}
 
+	if d.HasChange("remove_source_branch_after_merge") {
+		options.RemoveSourceBranchAfterMerge = gitlab.Bool(d.Get("remove_source_branch_after_merge").(bool))
+		updatedProperties = append(updatedProperties, "remove_source_branch_after_merge")
+	}
+
 	if *options != (gitlab.EditProjectOptions{}) {
 		log.Printf("[DEBUG] update gitlab project %s", d.Id())
 		_, _, err := client.Projects.EditProject(d.Id(), options)

website/docs/d/project.html.markdown

@@ -66,3 +66,5 @@ The following attributes are exported:
 * `runners_token` - Registration token to use during runner setup.
 
 * `archived` - Whether the project is in read-only mode (archived).
+
+* `remove_source_branch_after_merge` - Enable `Delete source branch` option by default for all new merge requests

website/docs/r/project.html.markdown

@@ -100,6 +100,9 @@ The following additional attributes are exported:
 * `shared_with_groups` - List of the groups the project is shared with.
   * `group_name` - Group's name.
 
+* `remove_source_branch_after_merge` - Enable `Delete source branch` option by default for all new merge requests.
+
+
 ## Importing projects
 
 You can import a project state using `terraform import <resource> <id>`.  The