Update New Snippet buttons.

No longer shows New Snippet button to users who aren't able to create a new snippet in the given context.

Also removes the plus icon from the New Snippet buttons, as they're no longer used in other creation buttons.

Fixes #14595.

CHANGELOG

@@ -31,6 +31,7 @@ v 8.10.0 (unreleased)
   - API: Expose shared groups for projects and shared projects for groups !5050 (Robert Schilling)
   - Add "Enabled Git access protocols" to Application Settings
   - Fix user creation with stronger minimum password requirements !4054 (nathan-pmt)
+  - Only show New Snippet button to users that can create snippets.
   - PipelinesFinder uses git cache data
   - Throttle the update of `project.pushes_since_gc` to 1 minute.
   - Check for conflicts with existing Project's wiki path when creating a new project.

app/views/explore/snippets/index.html.haml

@@ -10,7 +10,6 @@
   - if current_user
     .pull-right
       = link_to new_snippet_path, class: "btn btn-new", title: "New Snippet" do
-        = icon('plus')
         New Snippet
 
   .oneline

app/views/projects/snippets/_actions.html.haml

 .hidden-xs
-  = link_to new_namespace_project_snippet_path(@project.namespace, @project), class: 'btn btn-grouped btn-create new-snippet-link', title: "New Snippet" do
-    = icon('plus')
-    New Snippet
+  - if can?(current_user, :create_project_snippet, @project)
+    = link_to new_namespace_project_snippet_path(@project.namespace, @project), class: 'btn btn-grouped btn-create new-snippet-link', title: "New Snippet" do
+      New Snippet
   - if can?(current_user, :update_project_snippet, @snippet)
     = link_to edit_namespace_project_snippet_path(@project.namespace, @project, @snippet), class: "btn btn-grouped snippable-edit" do
       Edit
   - if can?(current_user, :update_project_snippet, @snippet)
     = link_to namespace_project_snippet_path(@project.namespace, @project, @snippet), method: :delete, data: { confirm: "Are you sure?" }, class: "btn btn-grouped btn-warning", title: 'Delete Snippet' do
       Delete
-.visible-xs-block.dropdown
-  %button.btn.btn-default.btn-block.append-bottom-0.prepend-top-5{ data: { toggle: "dropdown" } }
-    Options
-    %span.caret
-  .dropdown-menu.dropdown-menu-full-width
-    %ul
-      %li
-        = link_to new_namespace_project_snippet_path(@project.namespace, @project), title: "New Snippet" do
-          New Snippet
-      - if can?(current_user, :update_project_snippet, @snippet)
-        %li
-          = link_to edit_namespace_project_snippet_path(@project.namespace, @project, @snippet) do
-            Edit
-      - if can?(current_user, :update_project_snippet, @snippet)
-        %li
-          = link_to namespace_project_snippet_path(@project.namespace, @project, @snippet), method: :delete, data: { confirm: "Are you sure?" }, title: 'Delete Snippet' do
-            Delete
+- if can?(current_user, :create_project_snippet, @project) || can?(current_user, :update_project_snippet, @snippet)
+  .visible-xs-block.dropdown
+    %button.btn.btn-default.btn-block.append-bottom-0.prepend-top-5{ data: { toggle: "dropdown" } }
+      Options
+      %span.caret
+    .dropdown-menu.dropdown-menu-full-width
+      %ul
+        - if can?(current_user, :create_project_snippet, @project)
+          %li
+            = link_to new_namespace_project_snippet_path(@project.namespace, @project), title: "New Snippet" do
+              New Snippet
+        - if can?(current_user, :update_project_snippet, @snippet)
+          %li
+            = link_to edit_namespace_project_snippet_path(@project.namespace, @project, @snippet) do
+              Edit
+        - if can?(current_user, :update_project_snippet, @snippet)
+          %li
+            = link_to namespace_project_snippet_path(@project.namespace, @project, @snippet), method: :delete, data: { confirm: "Are you sure?" }, title: 'Delete Snippet' do
+              Delete

app/views/projects/snippets/index.html.haml

@@ -2,9 +2,9 @@
 
 .row-content-block.top-block
   .pull-right
-    = link_to new_namespace_project_snippet_path(@project.namespace, @project), class: "btn btn-new", title: "New Snippet" do
-      = icon('plus')
-      New Snippet
+    - if can?(current_user, :create_project_snippet, @project)
+      = link_to new_namespace_project_snippet_path(@project.namespace, @project), class: "btn btn-new", title: "New Snippet" do
+        New Snippet
 
   .oneline
     Share code pastes with others out of git repository

app/views/snippets/_actions.html.haml

 .hidden-xs
-  = link_to new_snippet_path, class: "btn btn-grouped btn-create new-snippet-link", title: "New Snippet" do
-    = icon('plus')
-    New Snippet
+  - if current_user
+    = link_to new_snippet_path, class: "btn btn-grouped btn-create new-snippet-link", title: "New Snippet" do
+      New Snippet
   - if can?(current_user, :update_personal_snippet, @snippet)
     = link_to edit_snippet_path(@snippet), class: "btn btn-grouped snippable-edit" do
       Edit
   - if can?(current_user, :admin_personal_snippet, @snippet)
     = link_to snippet_path(@snippet), method: :delete, data: { confirm: "Are you sure?" }, class: "btn btn-grouped btn-warning", title: 'Delete Snippet' do
       Delete
-.visible-xs-block.dropdown
-  %button.btn.btn-default.btn-block.append-bottom-0.prepend-top-5{ data: { toggle: "dropdown" } }
-    Options
-    %span.caret
-  .dropdown-menu.dropdown-menu-full-width
-    %ul
-      %li
-        = link_to new_snippet_path, title: "New Snippet" do
-          New Snippet
-      - if can?(current_user, :update_personal_snippet, @snippet)
+- if current_user
+  .visible-xs-block.dropdown
+    %button.btn.btn-default.btn-block.append-bottom-0.prepend-top-5{ data: { toggle: "dropdown" } }
+      Options
+      %span.caret
+    .dropdown-menu.dropdown-menu-full-width
+      %ul
         %li
-          = link_to edit_snippet_path(@snippet) do
-            Edit
-      - if can?(current_user, :admin_personal_snippet, @snippet)
-        %li
-          = link_to snippet_path(@snippet), method: :delete, data: { confirm: "Are you sure?" }, title: 'Delete Snippet' do
-            Delete
+          = link_to new_snippet_path, title: "New Snippet" do
+            New Snippet
+        - if can?(current_user, :update_personal_snippet, @snippet)
+          %li
+            = link_to edit_snippet_path(@snippet) do
+              Edit
+        - if can?(current_user, :admin_personal_snippet, @snippet)
+          %li
+            = link_to snippet_path(@snippet), method: :delete, data: { confirm: "Are you sure?" }, title: 'Delete Snippet' do
+              Delete