Adds environments delete button and modal

Adds delete functionality
Adds a property the 'api' library to enable access for buildUrl
Passes the project ID as a prop to the environments component
Imports the Delete component for use within the environment items
Adds canDeleteEnvironment as a computed method for environment items
Defines project ID as a required prop for the environments component
Imports the delete modal for the environments folder view
Sets up the delete modal within the environments modal
Creates a deleteAction helper method within the environments mixin
Creates an update method for the delete modal
Adds a method to facilitate API access to delete an environment
Adds events for reactivity with the delete environment feature
Adds an axios helper for DELETE calls in the environments service
Exposes a data attribute with the project ID on the environments list
Adds a test for the delete environment component
Adds a project ID to the mock data for the environments app

Adds translations and formatting

Fixes commas, semicolons, and whitespace using prettier
Adds generated environments-related translations

Implements delete button for detail view

Removes front-end buildable delete endpoint
Updates deletion method to ensure endpoint access
Removes previously-added project id property
Accesses exposed deletion endpoint
Adds helper function for model-based access to API endpoint
Exposes update rule for front-end access
Exposes helper-based delete endpoint
Removes previously added project id property
Adds modal and button for detail view
Removes project ID from mock data

Using const instead of let

Removes now unused import

Adds entry to changelog

Adds reload on delete modal success

Adds reload on delete for etag expiration
Modifies method name
Modifies delete path helper on entity
Modifies delete action helper
Adds request_url param

Adding docs for delete feature

Adds translations and lint fixes

app/assets/javascripts/environments/components/delete_environment_modal.vue

+<script>
+import { GlTooltipDirective } from '@gitlab/ui';
+import GlModal from '~/vue_shared/components/gl_modal.vue';
+import { s__, sprintf } from '~/locale';
+import eventHub from '../event_hub';
+
+export default {
+  id: 'delete-environment-modal',
+  name: 'DeleteEnvironmentModal',
+
+  components: {
+    GlModal,
+  },
+
+  directives: {
+    GlTooltip: GlTooltipDirective,
+  },
+
+  props: {
+    environment: {
+      type: Object,
+      required: true,
+    },
+  },
+
+  computed: {
+    confirmDeleteMessage() {
+      return sprintf(
+        s__(
+          `Environments|Deleting the '%{environmentName}' environment cannot be undone. Do you want to delete it anyway?`,
+        ),
+        {
+          environmentName: this.environment.name,
+        },
+        false,
+      );
+    },
+  },
+
+  methods: {
+    onSubmit() {
+      eventHub.$emit('deleteEnvironment', this.environment);
+    },
+  },
+};
+</script>
+
+<template>
+  <gl-modal
+    :id="$options.id"
+    :footer-primary-button-text="s__('Environments|Delete environment')"
+    footer-primary-button-variant="danger"
+    @submit="onSubmit"
+  >
+    <template slot="header">
+      <h4 class="modal-title d-flex mw-100">
+        {{ __('Delete') }}
+        <span v-gl-tooltip :title="environment.name" class="text-truncate mx-1 flex-fill">
+          {{ environment.name }}?
+        </span>
+      </h4>
+    </template>
+
+    <p>{{ confirmDeleteMessage }}</p>
+  </gl-modal>
+</template>

app/assets/javascripts/environments/components/environment_delete.vue

+<script>
+/**
+ * Renders the delete button that allows deleting a stopped environment.
+ * Used in the environments table and the environment detail view.
+ */
+
+import $ from 'jquery';
+import { GlTooltipDirective } from '@gitlab/ui';
+import Icon from '~/vue_shared/components/icon.vue';
+import { s__ } from '~/locale';
+import eventHub from '../event_hub';
+import LoadingButton from '../../vue_shared/components/loading_button.vue';
+
+export default {
+  components: {
+    Icon,
+    LoadingButton,
+  },
+  directives: {
+    GlTooltip: GlTooltipDirective,
+  },
+  props: {
+    environment: {
+      type: Object,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      isLoading: false,
+    };
+  },
+  computed: {
+    title() {
+      return s__('Environments|Delete environment');
+    },
+  },
+  mounted() {
+    eventHub.$on('deleteEnvironment', this.onDeleteEnvironment);
+  },
+  beforeDestroy() {
+    eventHub.$off('deleteEnvironment', this.onDeleteEnvironment);
+  },
+  methods: {
+    onClick() {
+      $(this.$el).tooltip('dispose');
+      eventHub.$emit('requestDeleteEnvironment', this.environment);
+    },
+    onDeleteEnvironment(environment) {
+      if (this.environment.id === environment.id) {
+        this.isLoading = true;
+      }
+    },
+  },
+};
+</script>
+<template>
+  <loading-button
+    v-gl-tooltip
+    :loading="isLoading"
+    :title="title"
+    :aria-label="title"
+    container-class="btn btn-danger d-none d-sm-none d-md-block"
+    data-toggle="modal"
+    data-target="#delete-environment-modal"
+    @click="onClick"
+  >
+    <icon name="remove" />
+  </loading-button>
+</template>

app/assets/javascripts/environments/components/environment_item.vue

@@ -15,8 +15,9 @@ import ActionsComponent from './environment_actions.vue';
 import ExternalUrlComponent from './environment_external_url.vue';
 import MonitoringButtonComponent from './environment_monitoring.vue';
 import PinComponent from './environment_pin.vue';
-import RollbackComponent from './environment_rollback.vue';
+import DeleteComponent from './environment_delete.vue';
 import StopComponent from './environment_stop.vue';
+import RollbackComponent from './environment_rollback.vue';
 import TerminalButtonComponent from './environment_terminal_button.vue';
 /**
@@ -33,6 +34,7 @@ export default {
     Icon,
     MonitoringButtonComponent,
     PinComponent,
+    DeleteComponent,
     RollbackComponent,
     StopComponent,
     TerminalButtonComponent,
@@ -112,6 +114,15 @@ export default {
       return this.model && this.model.can_stop;
     },
+    /**
+     * Returns whether the environment can be deleted.
+     *
+     * @returns {Boolean}
+     */
+    canDeleteEnvironment() {
+      return Boolean(this.model && this.model.can_delete && this.model.delete_path);
+    },
+
     /**
      * Verifies if the `deployable` key is present in `last_deployment` key.
      * Used to verify whether we should or not render the rollback partial.
@@ -485,6 +496,7 @@ export default {
         this.externalURL ||
         this.monitoringUrl ||
         this.canStopEnvironment ||
+        this.canDeleteEnvironment ||
         this.canRetry
       );
     },
@@ -680,6 +692,8 @@ export default {
         />
         <stop-component v-if="canStopEnvironment" :environment="model" />
+
+        <delete-component v-if="canDeleteEnvironment" :environment="model" />
       </div>
     </div>
   </div>

app/assets/javascripts/environments/components/environments_app.vue

@@ -9,6 +9,7 @@ import environmentsMixin from '../mixins/environments_mixin';
 import CIPaginationMixin from '~/vue_shared/mixins/ci_pagination_api_mixin';
 import EnableReviewAppButton from './enable_review_app_button.vue';
 import StopEnvironmentModal from './stop_environment_modal.vue';
+import DeleteEnvironmentModal from './delete_environment_modal.vue';
 import ConfirmRollbackModal from './confirm_rollback_modal.vue';
 export default {
@@ -18,6 +19,7 @@ export default {
     EnableReviewAppButton,
     GlButton,
     StopEnvironmentModal,
+    DeleteEnvironmentModal,
   },
   mixins: [CIPaginationMixin, environmentsMixin, envrionmentsAppMixin],
@@ -95,6 +97,7 @@ export default {
 <template>
   <div>
     <stop-environment-modal :environment="environmentInStopModal" />
+    <delete-environment-modal :environment="environmentInDeleteModal" />
     <confirm-rollback-modal :environment="environmentInRollbackModal" />
     <div class="top-area">

app/assets/javascripts/environments/components/stop_environment_modal.vue

@@ -63,10 +63,9 @@ export default {
     <template slot="header">
       <h4 class="modal-title d-flex mw-100">
         Stopping
-        <span v-gl-tooltip :title="environment.name" class="text-truncate ml-1 mr-1 flex-fill">{{
-          environment.name
-        }}</span>
-        ?
+        <span v-gl-tooltip :title="environment.name" class="text-truncate ml-1 mr-1 flex-fill">
+          {{ environment.name }}?
+        </span>
       </h4>
     </template>

app/assets/javascripts/environments/folder/environments_folder_view.vue

@@ -3,10 +3,12 @@ import folderMixin from 'ee_else_ce/environments/mixins/environments_folder_view
 import environmentsMixin from '../mixins/environments_mixin';
 import CIPaginationMixin from '../../vue_shared/mixins/ci_pagination_api_mixin';
 import StopEnvironmentModal from '../components/stop_environment_modal.vue';
+import DeleteEnvironmentModal from '../components/delete_environment_modal.vue';
 export default {
   components: {
     StopEnvironmentModal,
+    DeleteEnvironmentModal,
   },
   mixins: [environmentsMixin, CIPaginationMixin, folderMixin],
@@ -39,6 +41,7 @@ export default {
 <template>
   <div :class="cssContainerClass">
     <stop-environment-modal :environment="environmentInStopModal" />
+    <delete-environment-modal :environment="environmentInDeleteModal" />
     <h4 class="js-folder-name environments-folder-name">
       {{ s__('Environments|Environments') }} /

app/assets/javascripts/environments/mixins/environments_mixin.js

@@ -27,6 +27,10 @@ export default {
   data() {
     const store = new EnvironmentsStore();
+    const isDetailView = document.body.contains(
+      document.getElementById('environments-detail-view'),
+    );
+
     return {
       store,
       state: store.state,
@@ -36,7 +40,9 @@ export default {
       page: getParameterByName('page') || '1',
       requestData: {},
       environmentInStopModal: {},
+      environmentInDeleteModal: {},
       environmentInRollbackModal: {},
+      isDetailView,
     };
   },
@@ -121,6 +127,10 @@ export default {
       this.environmentInStopModal = environment;
     },
+    updateDeleteModal(environment) {
+      this.environmentInDeleteModal = environment;
+    },
+
     updateRollbackModal(environment) {
       this.environmentInRollbackModal = environment;
     },
@@ -133,6 +143,30 @@ export default {
       this.postAction({ endpoint, errorMessage });
     },
+    deleteEnvironment(environment) {
+      const endpoint = environment.delete_path;
+      const mountedToShow = environment.mounted_to_show;
+      const errorMessage = s__(
+        'Environments|An error occurred while deleting the environment. Check if the environment stopped; if not, stop it and try again.',
+      );
+
+      this.service
+        .deleteAction(endpoint)
+        .then(() => {
+          if (!mountedToShow) {
+            // Reload as a first solution to bust the ETag cache
+            window.location.reload();
+            return;
+          }
+          const url = window.location.href.split('/');
+          url.pop();
+          window.location.href = url.join('/');
+        })
+        .catch(() => {
+          Flash(errorMessage);
+        });
+    },
+
     rollbackEnvironment(environment) {
       const { retryUrl, isLastDeployment } = environment;
       const errorMessage = isLastDeployment
@@ -178,36 +212,42 @@ export default {
     this.service = new EnvironmentsService(this.endpoint);
     this.requestData = { page: this.page, scope: this.scope, nested: true };
-    this.poll = new Poll({
-      resource: this.service,
-      method: 'fetchEnvironments',
-      data: this.requestData,
-      successCallback: this.successCallback,
-      errorCallback: this.errorCallback,
-      notificationCallback: isMakingRequest => {
-        this.isMakingRequest = isMakingRequest;
-      },
-    });
-
-    if (!Visibility.hidden()) {
-      this.isLoading = true;
-      this.poll.makeRequest();
-    } else {
-      this.fetchEnvironments();
-    }
-    Visibility.change(() => {
+    if (!this.isDetailView) {
+      this.poll = new Poll({
+        resource: this.service,
+        method: 'fetchEnvironments',
+        data: this.requestData,
+        successCallback: this.successCallback,
+        errorCallback: this.errorCallback,
+        notificationCallback: isMakingRequest => {
+          this.isMakingRequest = isMakingRequest;
+        },
+      });
       if (!Visibility.hidden()) {
-        this.poll.restart();
+        this.isLoading = true;
+        this.poll.makeRequest();
       } else {
-        this.poll.stop();
+        this.fetchEnvironments();
       }
-    });
+
+      Visibility.change(() => {
+        if (!Visibility.hidden()) {
+          this.poll.restart();
+        } else {
+          this.poll.stop();
+        }
+      });
+    }
     eventHub.$on('postAction', this.postAction);
+
     eventHub.$on('requestStopEnvironment', this.updateStopModal);
     eventHub.$on('stopEnvironment', this.stopEnvironment);
+    eventHub.$on('requestDeleteEnvironment', this.updateDeleteModal);
+    eventHub.$on('deleteEnvironment', this.deleteEnvironment);
+
     eventHub.$on('requestRollbackEnvironment', this.updateRollbackModal);
     eventHub.$on('rollbackEnvironment', this.rollbackEnvironment);
@@ -216,9 +256,13 @@ export default {
   beforeDestroy() {
     eventHub.$off('postAction', this.postAction);
+
     eventHub.$off('requestStopEnvironment', this.updateStopModal);
     eventHub.$off('stopEnvironment', this.stopEnvironment);
+    eventHub.$off('requestDeleteEnvironment', this.updateDeleteModal);
+    eventHub.$off('deleteEnvironment', this.deleteEnvironment);
+
     eventHub.$off('requestRollbackEnvironment', this.updateRollbackModal);
     eventHub.$off('rollbackEnvironment', this.rollbackEnvironment);

app/assets/javascripts/environments/mount_show.js

+import Vue from 'vue';
+import DeleteEnvironmentModal from './components/delete_environment_modal.vue';
+import environmentsMixin from './mixins/environments_mixin';
+
+export default () => {
+  const el = document.getElementById('delete-environment-modal');
+  const container = document.getElementById('environments-detail-view');
+
+  return new Vue({
+    el,
+    components: {
+      DeleteEnvironmentModal,
+    },
+    mixins: [environmentsMixin],
+    data() {
+      const environment = JSON.parse(JSON.stringify(container.dataset));
+      environment.delete_path = environment.deletePath;
+      environment.mounted_to_show = true;
+
+      return {
+        environment,
+      };
+    },
+    render(createElement) {
+      return createElement('delete-environment-modal', {
+        props: {
+          environment: this.environment,
+        },
+      });
+    },
+  });
+};

app/assets/javascripts/environments/services/environments_service.js

@@ -16,6 +16,11 @@ export default class EnvironmentsService {
     return axios.post(endpoint, {});
   }
+  // eslint-disable-next-line class-methods-use-this
+  deleteAction(endpoint) {
+    return axios.delete(endpoint, {});
+  }
+
   getFolderContent(folderUrl) {
     return axios.get(`${folderUrl}.json?per_page=${this.folderResults}`);
   }

app/assets/javascripts/pages/projects/environments/show/index.js

+import initShowEnvironment from '~/environments/mount_show';
+
+document.addEventListener('DOMContentLoaded', () => initShowEnvironment());

app/helpers/environments_helper.rb

@@ -50,4 +50,8 @@ def environment_logs_data(project, environment)
       "cluster-applications-documentation-path" => help_page_path('user/clusters/applications.md', anchor: 'elastic-stack')
     }
   end
+
+  def can_destroy_environment?(environment)
+    can?(current_user, :destroy_environment, environment)
+  end
 end

app/helpers/gitlab_routing_helper.rb

@@ -4,6 +4,7 @@
 module GitlabRoutingHelper
   extend ActiveSupport::Concern
+  include API::Helpers::RelatedResourcesHelpers
   included do
     Gitlab::Routing.includes_helpers(self)
   end
@@ -29,6 +30,10 @@ def environment_metrics_path(environment, *args)
     metrics_project_environment_path(environment.project, environment, *args)
   end
+  def environment_delete_path(environment, *args)
+    expose_path(api_v4_projects_environments_path(id: environment.project.id, environment_id: environment.id))
+  end
+
   def issue_path(entity, *args)
     project_issue_path(entity.project, entity, *args)
   end

app/policies/environment_policy.rb

@@ -12,7 +12,13 @@ class EnvironmentPolicy < BasePolicy
     !@subject.stop_action_available? && can?(:update_environment, @subject)
   end
+  condition(:stopped) do
+    @subject.stopped?
+  end
+
   rule { stop_with_deployment_allowed | stop_with_update_allowed }.enable :stop_environment
+
+  rule { ~stopped }.prevent(:destroy_environment)
 end
 EnvironmentPolicy.prepend_if_ee('EE::EnvironmentPolicy')

app/policies/project_policy.rb

@@ -271,6 +271,7 @@ class ProjectPolicy < BasePolicy
     enable :destroy_container_image
     enable :create_environment
     enable :update_environment
+    enable :destroy_environment
     enable :create_deployment
     enable :update_deployment
     enable :create_release

app/serializers/environment_entity.rb

@@ -28,6 +28,10 @@ class EnvironmentEntity < Grape::Entity
     cancel_auto_stop_project_environment_path(environment.project, environment)
   end
+  expose :delete_path do |environment|
+    environment_delete_path(environment)
+  end
+
   expose :cluster_type, if: ->(environment, _) { cluster_platform_kubernetes? } do |environment|
     cluster.cluster_type
   end
@@ -63,6 +67,10 @@ class EnvironmentEntity < Grape::Entity
     environment.elastic_stack_available?
   end
+  expose :can_delete do |environment|
+    can?(current_user, :destroy_environment, environment)
+  end
+
   private
   alias_method :environment, :object

app/views/projects/environments/show.html.haml

@@ -5,74 +5,81 @@
 - content_for :page_specific_javascripts do
   = stylesheet_link_tag 'page_bundles/xterm'
-- if @environment.available? && can?(current_user, :stop_environment, @environment)
-  #stop-environment-modal.modal.fade{ tabindex: -1 }
-    .modal-dialog
-      .modal-content
-        .modal-header
-          %h4.modal-title.d-flex.mw-100
-            = s_("Environments|Stopping")
-            %span.has-tooltip.text-truncate.ml-1.mr-1.flex-fill{ title: @environment.name, data: { container: '#stop-environment-modal' } }
-              = @environment.name
-            ?
-        .modal-body
-          %p= s_('Environments|Are you sure you want to stop this environment?')
-          - unless @environment.stop_action_available?
-            .warning_message
-              %p= s_('Environments|Note that this action will stop the environment, but it will %{emphasis_start}not%{emphasis_end} have an effect on any existing deployment due to no “stop environment action” being defined in the %{ci_config_link_start}.gitlab-ci.yml%{ci_config_link_end} file.').html_safe % { emphasis_start: '<strong>'.html_safe,
-                emphasis_end: '</strong>'.html_safe,
-                ci_config_link_start: '<a href="https://docs.gitlab.com/ee/ci/yaml/" target="_blank" rel="noopener noreferrer">'.html_safe,
-                ci_config_link_end: '</a>'.html_safe }
-              %a{ href: 'https://docs.gitlab.com/ee/ci/environments.html#stopping-an-environment',
-                target: '_blank',
-                rel: 'noopener noreferrer' }
-                = s_('Environments|Learn more about stopping environments')
-        .modal-footer
-          = button_tag _('Cancel'), type: 'button', class: 'btn btn-cancel', data: { dismiss: 'modal' }
-          = button_to stop_project_environment_path(@project, @environment), class: 'btn btn-danger has-tooltip', method: :post do
-            = s_('Environments|Stop environment')
-.top-area.justify-content-between
-  .d-flex
-    %h3.page-title= @environment.name
-    - if @environment.auto_stop_at?
-      %p.align-self-end.prepend-left-8
-        = s_('Environments|Auto stops %{auto_stop_time}').html_safe % {auto_stop_time: time_ago_with_tooltip(@environment.auto_stop_at)}
-  .nav-controls.my-2
-    = render 'projects/environments/pin_button', environment: @environment
-    = render 'projects/environments/terminal_button', environment: @environment
-    = render 'projects/environments/external_url', environment: @environment
-    = render 'projects/environments/metrics_button', environment: @environment
-    - if can?(current_user, :update_environment, @environment)
-      = link_to _('Edit'), edit_project_environment_path(@project, @environment), class: 'btn'
-    - if @environment.available? && can?(current_user, :stop_environment, @environment)
-      = button_tag class: 'btn btn-danger', type: 'button', data: { toggle: 'modal',
-        target: '#stop-environment-modal' } do
-        = sprite_icon('stop')
-        = s_('Environments|Stop')
-.environments-container
-  - if @deployments.blank?
-    .empty-state
-      .text-content
-        %h4.state-title
-          = _("You don't have any deployments right now.")
-        %p.blank-state-text
-          = _("Define environments in the deploy stage(s) in <code>.gitlab-ci.yml</code> to track deployments here.").html_safe
-        .text-center
-          = link_to _("Read more"), help_page_path("ci/environments"), class: "btn btn-success"
-  - else
-    .table-holder
-      .ci-table.environments{ role: 'grid' }
-        .gl-responsive-table-row.table-row-header{ role: 'row' }
-          .table-section.section-15{ role: 'columnheader' }= _('Status')
-          .table-section.section-10{ role: 'columnheader' }= _('ID')
-          .table-section.section-10{ role: 'columnheader' }= _('Triggerer')
-          .table-section.section-25{ role: 'columnheader' }= _('Commit')
-          .table-section.section-10{ role: 'columnheader' }= _('Job')
-          .table-section.section-10{ role: 'columnheader' }= _('Created')
-          .table-section.section-10{ role: 'columnheader' }= _('Deployed')
-        = render @deployments
-    = paginate @deployments, theme: 'gitlab'
+#environments-detail-view{ data: { name: @environment.name, id: @environment.id, delete_path: environment_delete_path(@environment)} }
+  - if @environment.available? && can?(current_user, :stop_environment, @environment)
+    #stop-environment-modal.modal.fade{ tabindex: -1 }
+      .modal-dialog
+        .modal-content
+          .modal-header
+            %h4.modal-title.d-flex.mw-100
+              = s_("Environments|Stopping")
+              %span.has-tooltip.text-truncate.ml-1.mr-1.flex-fill{ title: @environment.name, data: { container: '#stop-environment-modal' } }
+                #{@environment.name}?
+          .modal-body
+            %p= s_('Environments|Are you sure you want to stop this environment?')
+            - unless @environment.stop_action_available?
+              .warning_message
+                %p= s_('Environments|Note that this action will stop the environment, but it will %{emphasis_start}not%{emphasis_end} have an effect on any existing deployment due to no “stop environment action” being defined in the %{ci_config_link_start}.gitlab-ci.yml%{ci_config_link_end} file.').html_safe % { emphasis_start: '<strong>'.html_safe,
+                  emphasis_end: '</strong>'.html_safe,
+                  ci_config_link_start: '<a href="https://docs.gitlab.com/ee/ci/yaml/" target="_blank" rel="noopener noreferrer">'.html_safe,
+                  ci_config_link_end: '</a>'.html_safe }
+                %a{ href: 'https://docs.gitlab.com/ee/ci/environments.html#stopping-an-environment',
+                  target: '_blank',
+                  rel: 'noopener noreferrer' }
+                  = s_('Environments|Learn more about stopping environments')
+          .modal-footer
+            = button_tag _('Cancel'), type: 'button', class: 'btn btn-cancel', data: { dismiss: 'modal' }
+            = button_to stop_project_environment_path(@project, @environment), class: 'btn btn-danger has-tooltip', method: :post do
+              = s_('Environments|Stop environment')
+  - if can_destroy_environment?(@environment)
+    #delete-environment-modal
+  .top-area.justify-content-between
+    .d-flex
+      %h3.page-title= @environment.name
+      - if @environment.auto_stop_at?
+        %p.align-self-end.prepend-left-8
+          = s_('Environments|Auto stops %{auto_stop_time}').html_safe % {auto_stop_time: time_ago_with_tooltip(@environment.auto_stop_at)}
+    .nav-controls.my-2
+      = render 'projects/environments/pin_button', environment: @environment
+      = render 'projects/environments/terminal_button', environment: @environment
+      = render 'projects/environments/external_url', environment: @environment
+      = render 'projects/environments/metrics_button', environment: @environment
+      - if can?(current_user, :update_environment, @environment)
+        = link_to _('Edit'), edit_project_environment_path(@project, @environment), class: 'btn'
+      - if @environment.available? && can?(current_user, :stop_environment, @environment)
+        = button_tag class: 'btn btn-danger', type: 'button', data: { toggle: 'modal',
+          target: '#stop-environment-modal' } do
+          = sprite_icon('stop')
+          = s_('Environments|Stop')
+      - if can_destroy_environment?(@environment)
+        = button_tag class: 'btn btn-danger', type: 'button', data: { toggle: 'modal',
+          target: '#delete-environment-modal' } do
+          = s_('Environments|Delete')
+  .environments-container
+    - if @deployments.blank?
+      .empty-state
+        .text-content
+          %h4.state-title
+            = _("You don't have any deployments right now.")
+          %p.blank-state-text
+            = _("Define environments in the deploy stage(s) in <code>.gitlab-ci.yml</code> to track deployments here.").html_safe
+          .text-center
+            = link_to _("Read more"), help_page_path("ci/environments"), class: "btn btn-success"
+    - else
+      .table-holder
+        .ci-table.environments{ role: 'grid' }
+          .gl-responsive-table-row.table-row-header{ role: 'row' }
+            .table-section.section-15{ role: 'columnheader' }= _('Status')
+            .table-section.section-10{ role: 'columnheader' }= _('ID')
+            .table-section.section-10{ role: 'columnheader' }= _('Triggerer')
+            .table-section.section-25{ role: 'columnheader' }= _('Commit')
+            .table-section.section-10{ role: 'columnheader' }= _('Job')
+            .table-section.section-10{ role: 'columnheader' }= _('Created')
+            .table-section.section-10{ role: 'columnheader' }= _('Deployed')
+          = render @deployments
+
+      = paginate @deployments, theme: 'gitlab'

changelogs/unreleased/41845-delete-environment.yml

+---
+title: Adds features to delete stopped environments
+merge_request: 22629
+author:
+type: added

doc/ci/environments.md

@@ -761,6 +761,33 @@ runs once every hour. This means environments will not be stopped at the exact
 timestamp as the specified period, but will be stopped when the hourly cron worker
 detects expired environments.
+#### Delete a stopped environment
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/22629) in GitLab 12.9.
+
+You can delete [stopped environments](#stopping-an-environment) in one of two
+ways: through the GitLab UI or through the API.
+
+##### Delete environments through the UI
+
+To view the list of **Stopped** environments, navigate to **Operations > Environments**
+and click the **Stopped** tab.
+
+From there, you can click the **Delete** button directly, or you can click the
+environment name to see its details and **Delete** it from there.
+
+You can also delete environments by viewing the details for a
+stopped environment:
+
+  1. Navigate to **Operations > Environments**.
+  1. Click on the name of an environment within the **Stopped** environments list.
+  1. Click on the **Delete** button that appears at the top for all stopped environments.
+  1. Finally, confirm your chosen environment in the modal that appears to delete it.
+
+##### Delete environments through the API
+
+Environments can also be deleted by using the [Environments API](../api/environments.md#delete-an-environment).
+
 ### Grouping similar environments
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/7015) in GitLab 8.14.

ee/app/helpers/ee/gitlab_routing_helper.rb

@@ -4,7 +4,6 @@ module EE
   module GitlabRoutingHelper
     include ::ProjectsHelper
     include ::ApplicationSettingsHelper
-    include ::API::Helpers::RelatedResourcesHelpers
     def geo_primary_web_url(project_or_wiki)
       File.join(::Gitlab::Geo.primary_node.url, project_or_wiki.full_path)

ee/app/policies/ee/environment_policy.rb

@@ -12,6 +12,7 @@ module EnvironmentPolicy
         prevent :create_deployment
         prevent :update_deployment
         prevent :update_environment
+        prevent :destroy_environment
       end
       private