Project alias for Slack application can be edited

app/controllers/projects/settings/slacks_controller.rb

@@ -3,6 +3,10 @@ module Projects
     class SlacksController < Projects::ApplicationController
       before_action :handle_oauth_error, only: :slack_auth
       before_action :authorize_admin_project!
+      before_action :slack_integration, only: [:edit, :update]
+      before_action :service, only: [:destroy, :edit, :update]
+
+      layout 'project_settings'
 
       def slack_auth
         result = Projects::SlackApplicationInstallService.new(project, current_user, params).execute
@@ -15,12 +19,24 @@ module Projects
       end
 
       def destroy
-        service = project.gitlab_slack_application_service
-        service.slack_integration.destroy
+        slack_integration.destroy
 
         redirect_to_service_page
       end
 
+      def edit
+      end
+
+      def update
+        if slack_integration.update(slack_integration_params)
+          flash[:notice] = 'The project alias was updated successfully'
+
+          redirect_to_service_page
+        else
+          render :edit
+        end
+      end
+
       private
 
       def redirect_to_service_page
@@ -36,6 +52,18 @@ module Projects
           redirect_to_service_page
         end
       end
+
+      def slack_integration
+        @slack_integration ||= project.gitlab_slack_application_service.slack_integration
+      end
+
+      def service
+        @service = project.gitlab_slack_application_service
+      end
+
+      def slack_integration_params
+        params.require(:slack_integration).permit(:alias)
+      end
     end
   end
 end

app/models/slack_integration.rb

@@ -4,7 +4,8 @@ class SlackIntegration < ActiveRecord::Base
   validates :team_id, presence: true
   validates :team_name, presence: true
   validates :alias, presence: true,
-                    uniqueness: { scope: :team_id, message: 'This alias has already been taken' }
+                    uniqueness: { scope: :team_id, message: 'This alias has already been taken' },
+                    length: 2..80
   validates :user_id, presence: true
   validates :service, presence: true
 

app/views/projects/services/gitlab_slack_application/_slack_integration_form.html.haml

@@ -5,8 +5,8 @@
     %colgroup
       %col
       %col
-      %col.hidden-xs
-      %col{ width: "120" }
+      %col
+      %col
     %thead
       %tr
         %th Team name
@@ -18,9 +18,11 @@
         = slack_integration.team_name
       %td
         = slack_integration.alias
-      %td.light
+      %td
         = time_ago_in_words slack_integration.created_at
         ago
-      %td.light
-        - project = @service.project
-        = link_to 'Remove', namespace_project_settings_slack_path(project.namespace, project), method: :delete, class: 'btn btn-danger', data: { confirm: 'Are you sure?' }
+      %td
+        .controls
+          - project = @service.project
+          = link_to 'Edit', edit_project_settings_slack_path(project), class: 'btn btn-sm'
+          = link_to 'Remove', project_settings_slack_path(project), method: :delete, class: 'btn btn-danger btn-sm', data: { confirm: 'Are you sure?' }

app/views/projects/settings/slacks/edit.html.haml

+- page_title 'Edit Slack integration'
+= render "projects/settings/head"
+
+.row.prepend-top-default.append-bottom-default
+  .col-lg-3
+    %h4.prepend-top-0
+      Edit project alias
+
+    %p You can use this alias in your Slack commands
+  .col-lg-9
+    = form_errors(@slack_integration)
+    = form_for(@slack_integration, url: project_settings_slack_path(@project), method: :put, html: { class: 'gl-show-field-errors form-horizontal js-integration-settings-form'}) do |form|
+      .form-group
+        = form.label :alias, 'Enter your alias', class: 'control-label'
+        .col-sm-10
+          = form.text_field :alias, class: 'form-control', placeholder: @slack_integration.alias, required: true
+
+      .footer-block.row-content-block
+        %button.btn.btn-save{ type: 'submit' }
+          = icon('spinner spin', class: 'hidden js-btn-spinner')
+          %span.js-btn-label
+            Save changes
+         
+        = link_to 'Cancel', edit_project_service_path(@project, @service), class: 'btn btn-cancel'

config/routes/project.rb

@@ -438,7 +438,7 @@ constraints(ProjectUrlConstrainer.new) do
         resource :ci_cd, only: [:show], controller: 'ci_cd'
         resource :integrations, only: [:show]
 
-        resource :slack, only: [:destroy] do
+        resource :slack, only: [:destroy, :edit, :update] do
           get :slack_auth
         end
 

spec/features/projects/settings/slack_application_spec.rb

+require 'spec_helper'
+
+feature 'Slack application', feature: true do
+  let(:project) { create(:empty_project) }
+  let(:user) { create(:user) }
+  let(:role) { :developer }
+  let(:service) { create(:gitlab_slack_application_service, project: project) }
+  let(:slack_application_form_path) { edit_project_service_path(project, service) }
+
+  background do
+    gitlab_sign_in(user)
+    project.team << [user, :master]
+
+    create(:slack_integration, service: service)
+
+    allow(Service).to receive(:show_gitlab_slack_application?).and_return(true)
+  end
+
+  scenario 'I can edit slack integration' do
+    visit slack_application_form_path
+
+    within '.js-integration-settings-form' do
+      click_link 'Edit'
+    end
+
+    fill_in 'slack_integration_alias', with: 'alias-edited'
+    click_button 'Save changes'
+
+    expect(page).to have_content('The project alias is updated successfully')
+
+    within '.js-integration-settings-form' do
+      expect(page).to have_content('alias-edited')
+    end
+  end
+end