FEATURE: Add 'groups' option to polls (#8469)

This options can be used to restrict polls to certain groups.

plugins/poll/app/models/poll.rb

@@ -78,6 +78,7 @@ end
 #  created_at       :datetime         not null
 #  updated_at       :datetime         not null
 #  chart_type       :integer          default("bar"), not null
+#  groups           :string
 #
 # Indexes
 #

plugins/poll/app/serializers/poll_serializer.rb

@@ -13,7 +13,8 @@ class PollSerializer < ApplicationSerializer
              :voters,
              :close,
              :preloaded_voters,
-             :chart_type
+             :chart_type,
+             :groups
 
   def public
     true
@@ -35,6 +36,10 @@ class PollSerializer < ApplicationSerializer
     object.step.present? && object.number?
   end
 
+  def include_groups?
+    groups.present?
+  end
+
   def options
     object.poll_options.map { |o| PollOptionSerializer.new(o, root: false).as_json }
   end

plugins/poll/assets/javascripts/controllers/poll-ui-builder.js.es6

@@ -82,6 +82,13 @@ export default Controller.extend({
     return options;
   },
 
+  @computed("site.groups")
+  siteGroups(groups) {
+    const values = [{ name: "", value: null }];
+    groups.forEach(g => values.push({ name: g.name, value: g.name }));
+    return values;
+  },
+
   @computed("pollType", "regularPollType")
   isRegular(pollType, regularPollType) {
     return pollType === regularPollType;
@@ -184,6 +191,7 @@ export default Controller.extend({
     "pollMin",
     "pollMax",
     "pollStep",
+    "pollGroups",
     "autoClose",
     "chartType",
     "date",
@@ -199,6 +207,7 @@ export default Controller.extend({
     pollMin,
     pollMax,
     pollStep,
+    pollGroups,
     autoClose,
     chartType,
     date,
@@ -228,6 +237,7 @@ export default Controller.extend({
     if (publicPoll) pollHeader += ` public=true`;
     if (chartType && pollType !== "number")
       pollHeader += ` chartType=${chartType}`;
+    if (pollGroups) pollHeader += ` groups=${pollGroups}`;
     if (autoClose) {
       let closeDate = moment(
         date + " " + time,
@@ -323,6 +333,7 @@ export default Controller.extend({
       pollStep: 1,
       autoClose: false,
       chartType: BAR_CHART_TYPE,
+      pollGroups: null,
       date: moment()
         .add(1, "day")
         .format("YYYY-MM-DD"),

plugins/poll/assets/javascripts/discourse/templates/modal/poll-ui-builder.hbs

@@ -17,6 +17,14 @@
                     valueAttribute="value"}}
       </div>
 
+      <div class="input-group poll-select">
+        <label class="input-group-label">{{i18n 'poll.ui_builder.poll_groups.label'}}</label>
+        {{combo-box content=siteGroups
+                    value=pollGroups
+                    allowInitialValueMutation=true
+                    valueAttribute="value"}}
+      </div>
+
       {{#unless isNumber}}
         <div class="input-group poll-select">
           <label class="input-group-label">{{i18n 'poll.ui_builder.poll_chart_type.label'}}</label>

plugins/poll/assets/javascripts/lib/discourse-markdown/poll.js.es6

@@ -11,6 +11,7 @@ const WHITELISTED_ATTRIBUTES = [
   "public",
   "results",
   "chartType",
+  "groups",
   "status",
   "step",
   "type"

plugins/poll/assets/javascripts/widgets/discourse-poll.js.es6

@@ -333,16 +333,43 @@ createWidget("discourse-poll-container", {
           : "discourse-poll-pie-chart";
       return this.attach(resultsWidget, attrs);
     } else if (options) {
-      return h(
-        "ul",
-        options.map(option => {
-          return this.attach("discourse-poll-option", {
-            option,
-            isMultiple: attrs.isMultiple,
-            vote: attrs.vote
-          });
-        })
+      const contents = [];
+
+      const pollGroups =
+        poll.groups && poll.groups.split(",").map(g => g.toLowerCase());
+
+      const userGroups =
+        this.currentUser &&
+        this.currentUser.groups &&
+        this.currentUser.groups.map(g => g.name.toLowerCase());
+
+      if (
+        pollGroups &&
+        userGroups &&
+        !pollGroups.some(g => userGroups.includes(g))
+      ) {
+        contents.push(
+          h(
+            "div.alert.alert-danger",
+            I18n.t("poll.results.groups.title", { groups: poll.groups })
+          )
+        );
+      }
+
+      contents.push(
+        h(
+          "ul",
+          options.map(option => {
+            return this.attach("discourse-poll-option", {
+              option,
+              isMultiple: attrs.isMultiple,
+              vote: attrs.vote
+            });
+          })
+        )
       );
+
+      return contents;
     }
   }
 });
@@ -954,6 +981,16 @@ export default createWidget("discourse-poll", {
     this.register.lookup("route:application").send("showLogin");
   },
 
+  _toggleOption(option) {
+    const { vote } = this.attrs;
+    const chosenIdx = vote.indexOf(option.id);
+    if (chosenIdx !== -1) {
+      vote.splice(chosenIdx, 1);
+    } else {
+      vote.push(option.id);
+    }
+  },
+
   toggleOption(option) {
     const { attrs } = this;
 
@@ -961,20 +998,13 @@ export default createWidget("discourse-poll", {
     if (!this.currentUser) return this.showLogin();
 
     const { vote } = attrs;
-    const chosenIdx = vote.indexOf(option.id);
-
     if (!this.isMultiple()) {
       vote.length = 0;
     }
 
-    if (chosenIdx !== -1) {
-      vote.splice(chosenIdx, 1);
-    } else {
-      vote.push(option.id);
-    }
-
+    this._toggleOption(option);
     if (!this.isMultiple()) {
-      return this.castVotes();
+      return this.castVotes().catch(() => this._toggleOption(option));
     }
   },
 

plugins/poll/config/locales/client.en.yml

@@ -31,6 +31,8 @@ en:
         title: "Votes are <strong>public</strong>."
 
       results:
+        groups:
+          title: "You need to be a member of %{groups} to vote in this poll."
         vote:
           title: "Results will be shown on <strong>vote</strong>."
         closed:
@@ -112,6 +114,8 @@ en:
           vote: On vote
           closed: When closed
           staff: Staff only
+        poll_groups:
+          label: Allowed groups
         poll_chart_type:
           label: Chart type
         poll_config:

plugins/poll/db/migrate/20191206123012_add_group_name_to_polls.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddGroupNameToPolls < ActiveRecord::Migration[5.2]
+  def change
+    add_column :polls, :groups, :string
+  end
+end

plugins/poll/lib/polls_updater.rb

@@ -3,7 +3,7 @@
 module DiscoursePoll
   class PollsUpdater
 
-    POLL_ATTRIBUTES ||= %w{close_at max min results status step type visibility}
+    POLL_ATTRIBUTES ||= %w{close_at max min results status step type visibility groups}
 
     def self.update(post, polls)
       ::Poll.transaction do
@@ -38,6 +38,7 @@ module DiscoursePoll
           attributes["visibility"] = new_poll["public"] == "true" ? "everyone" : "secret"
           attributes["close_at"] = Time.zone.parse(new_poll["close"]) rescue nil
           attributes["status"] = old_poll["status"]
+          attributes["groups"] = new_poll["groups"]
           poll = ::Poll.new(attributes)
 
           if is_different?(old_poll, poll, new_poll_options)

plugins/poll/plugin.rb

@@ -71,6 +71,14 @@ after_initialize do
           raise StandardError.new I18n.t("poll.no_poll_with_this_name", name: poll_name) unless poll
           raise StandardError.new I18n.t("poll.poll_must_be_open_to_vote") if poll.is_closed?
 
+          if poll.groups
+            poll_groups = poll.groups.split(",").map(&:downcase)
+            user_groups = user.groups.map { |g| g.name.downcase }
+            if (poll_groups & user_groups).empty?
+              raise StandardError.new I18n.t("js.poll.results.groups.title", group: poll.groups)
+            end
+          end
+
           # remove options that aren't available in the poll
           available_options = poll.poll_options.map { |o| o.digest }.to_set
           options.select! { |o| available_options.include?(o) }
@@ -322,7 +330,8 @@ after_initialize do
           min: poll["min"],
           max: poll["max"],
           step: poll["step"],
-          chart_type: poll["charttype"] || "bar"
+          chart_type: poll["charttype"] || "bar",
+          groups: poll["groups"]
         )
 
         poll["options"].each do |option|

plugins/poll/spec/controllers/polls_controller_spec.rb

@@ -186,6 +186,18 @@ describe ::DiscoursePoll::PollsController do
       expect(json["errors"][0]).to eq(I18n.t("poll.poll_must_be_open_to_vote"))
     end
 
+    it "ensures user has required trust level" do
+      poll = create_post(raw: "[poll groups=#{Fabricate(:group).name}]\n- A\n- B\n[/poll]")
+
+      put :vote, params: {
+        post_id: poll.id, poll_name: "poll", options: ["5c24fc1df56d764b550ceae1b9319125"]
+      }, format: :json
+
+      expect(response.status).not_to eq(200)
+      json = ::JSON.parse(response.body)
+      expect(json["errors"][0]).to eq(I18n.t("js.poll.results.groups.title", trust_level: 2))
+    end
+
     it "doesn't discard anonymous votes when someone votes" do
       the_poll = poll.polls.first
       the_poll.update_attribute(:anonymous_voters, 17)

plugins/poll/test/javascripts/controllers/poll-ui-builder-test.js.es6

@@ -283,6 +283,14 @@ test("regular pollOutput", function(assert) {
     "[poll type=regular public=true chartType=bar]\n* 1\n* 2\n[/poll]\n",
     "it should return the right output"
   );
+
+  controller.set("pollGroups", "test");
+
+  assert.equal(
+    controller.get("pollOutput"),
+    "[poll type=regular public=true chartType=bar groups=test]\n* 1\n* 2\n[/poll]\n",
+    "it should return the right output"
+  );
 });
 
 test("multiple pollOutput", function(assert) {