Fix error 2

Author: SharaevN

docs/data-sources/project_milestone.md

@@ -18,13 +18,13 @@ The `gitlab_project_milestone` data source allows get details of a project miles
 ```terraform
 # By project ID
 data "gitlab_project_milestone" "example" {
-  project_id   = "12345"
+  project      = "12345"
   milestone_id = 10
 }
 
 # By project full path
 data "gitlab_project_milestone" "example" {
-  project_id   = "foo/bar"
+  project      = "foo/bar"
   milestone_id = 10
 }
 ```
@@ -35,7 +35,7 @@ data "gitlab_project_milestone" "example" {
 ### Required
 
 - `milestone_id` (Number) The instance-wide ID of the project’s milestone.
-- `project_id` (Number) The project ID of milestone.
+- `project` (String) The ID or URL-encoded path of the project owned by the authenticated user.
 
 ### Read-Only
 
@@ -45,7 +45,7 @@ data "gitlab_project_milestone" "example" {
 - `expired` (Boolean) Bool, true if milestore expired.
 - `id` (String) The ID of this resource.
 - `iid` (Number) The ID of the project's milestone.
-- `project` (String) The ID or URL-encoded path of the project owned by the authenticated user.
+- `project_id` (Number) The project ID of milestone.
 - `start_date` (String) The start date of the milestone. Date time string in the format YYYY-MM-DD, for example 2016-03-11.
 - `state` (String) The state of the milestone. Valid values are: `active`, `closed`.
 - `title` (String) The title of a milestone.

docs/data-sources/project_milestones.md

@@ -18,12 +18,12 @@ The `gitlab_project_milestones` data source allows get details of a project mile
 ```terraform
 # By project ID
 data "gitlab_project_milestones" "example" {
-  project_id = "12345"
+  project = "12345"
 }
 
 # By project full path
 data "gitlab_project_milestones" "example" {
-  project_id = "foo/bar"
+  project = "foo/bar"
 }
 ```
 

docs/resources/project_milestone.md

@@ -24,8 +24,8 @@ resource "gitlab_project" "example" {
 }
 
 resource "gitlab_project_milestone" "example" {
-  project_id = gitlab_project.example.id
-  title      = "example"
+  project = gitlab_project.example.id
+  title   = "example"
 }
 ```
 
@@ -60,6 +60,6 @@ resource "gitlab_project_milestone" "example" {
 Import is supported using the following syntax:
 
 ```shell
-# Gitlab project milestone can be imported with a key composed of `<project_id>:<milestone_id>`, e.g.
+# Gitlab project milestone can be imported with a key composed of `<project>:<milestone_id>`, e.g.
 terraform import gitlab_project_milestone.example "12345:11"
 ```

examples/data-sources/gitlab_project_milestone/data-source.tf

@@ -1,11 +1,11 @@
 # By project ID
 data "gitlab_project_milestone" "example" {
-  project_id   = "12345"
+  project      = "12345"
   milestone_id = 10
 }
 
 # By project full path
 data "gitlab_project_milestone" "example" {
-  project_id   = "foo/bar"
+  project      = "foo/bar"
   milestone_id = 10
 }

examples/data-sources/gitlab_project_milestones/data-source.tf

@@ -1,9 +1,9 @@
 # By project ID
 data "gitlab_project_milestones" "example" {
-  project_id = "12345"
+  project = "12345"
 }
 
 # By project full path
 data "gitlab_project_milestones" "example" {
-  project_id = "foo/bar"
+  project = "foo/bar"
 }

examples/resources/gitlab_project_milestone/import.sh

@@ -1,2 +1,2 @@
-# Gitlab project milestone can be imported with a key composed of `<project_id>:<milestone_id>`, e.g.
+# Gitlab project milestone can be imported with a key composed of `<project>:<milestone_id>`, e.g.
 terraform import gitlab_project_milestone.example "12345:11"

examples/resources/gitlab_project_milestone/resource.tf

@@ -6,6 +6,6 @@ resource "gitlab_project" "example" {
 }
 
 resource "gitlab_project_milestone" "example" {
-  project_id = gitlab_project.example.id
-  title      = "example"
+  project = gitlab_project.example.id
+  title   = "example"
 }

internal/provider/data_source_gitlab_project_milestones.go

@@ -26,6 +26,7 @@ var _ = registerDataSource("gitlab_project_milestones", func() *schema.Resource
 				Description: "The ID or URL-encoded path of the project owned by the authenticated user.",
 				Type:        schema.TypeString,
 				Required:    true,
+				ForceNew:    true,
 			},
 			"iids": {
 				Description: "Return only the milestones having the given `iid` (Note: ignored if `include_parent_milestones` is set as `true`).",

internal/provider/data_source_gitlab_project_milestones_test.go

@@ -21,7 +21,7 @@ func TestAccDataGitlabProjectMilestones_basic(t *testing.T) {
 			{
 				Config: fmt.Sprintf(`
                 data "gitlab_project_milestones" "this" {
-                  project_id = "%d"
+                  project = "%d"
                 }`, testProject.ID),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttr("data.gitlab_project_milestones.this", "milestones.#", fmt.Sprintf("%d", len(testMilestones))),