Merge pull request #3284 from techAPJ/patch-1

FEATURE: new site setting min_first_post_length

app/assets/javascripts/discourse/models/composer.js.es6

@@ -40,6 +40,8 @@ const Composer = Discourse.Model.extend({
     return this.get('creatingPrivateMessage') || this.get('topic.archetype') === 'private_message';
   }.property('creatingPrivateMessage', 'topic'),
 
+  topicFirstPost: Em.computed.or('creatingTopic', 'editingFirstPost'),
+
   editingPost: Em.computed.equal('action', EDIT),
   replyingToTopic: Em.computed.equal('action', REPLY),
 
@@ -215,10 +217,13 @@ const Composer = Discourse.Model.extend({
   minimumPostLength: function() {
     if( this.get('privateMessage') ) {
       return Discourse.SiteSettings.min_private_message_post_length;
+    } else if (this.get('topicFirstPost')) {
+      // first post (topic body)
+      return Discourse.SiteSettings.min_first_post_length;
     } else {
       return Discourse.SiteSettings.min_post_length;
     }
-  }.property('privateMessage'),
+  }.property('privateMessage', 'topicFirstPost'),
 
   /**
     Computes the length of the title minus non-significant whitespaces

app/models/site_setting.rb

@@ -48,6 +48,10 @@ class SiteSetting < ActiveRecord::Base
     min_post_length..max_post_length
   end
 
+  def self.first_post_length
+    min_first_post_length..max_post_length
+  end
+
   def self.private_message_post_length
     min_private_message_post_length..max_post_length
   end

config/locales/server.en.yml

@@ -733,6 +733,7 @@ en:
     default_locale: "The default language of this Discourse instance (ISO 639-1 Code)"
     allow_user_locale: "Allow users to choose their own language interface preference"
     min_post_length: "Minimum allowed post length in characters"
+    min_first_post_length: "Minimum allowed first post (topic body) length in characters"
     min_private_message_post_length: "Minimum allowed post length in characters for private messages"
     max_post_length: "Maximum allowed post length in characters"
     min_topic_title_length: "Minimum allowed topic title length in characters"

config/site_settings.yml

@@ -310,6 +310,12 @@ posting:
     default:
       test: 5
       default: 20
+  min_first_post_length:
+    client: true
+    min: 1
+    default:
+      test: 5
+      default: 20
   min_private_message_post_length:
     client: true
     min: 1

lib/validators/post_validator.rb

@@ -25,7 +25,17 @@ class Validators::PostValidator < ActiveModel::Validator
   end
 
   def stripped_length(post)
-    range = post.topic.try(:private_message?) ? SiteSetting.private_message_post_length : SiteSetting.post_length
+    range = if post.topic.try(:private_message?)
+      # private message
+      SiteSetting.private_message_post_length
+    elsif ( post.is_first_post? || (post.topic.present? && post.topic.posts_count == 0) )
+      # creating/editing first post
+      SiteSetting.first_post_length
+    else
+      # regular post
+      SiteSetting.post_length
+    end
+
     Validators::StrippedLengthValidator.validate(post, :raw, post.raw, range)
   end
 

script/import_scripts/base.rb

@@ -99,6 +99,7 @@ class ImportScripts::Base
       email_domains_blacklist: '',
       min_topic_title_length: 1,
       min_post_length: 1,
+      min_first_post_length: 1,
       min_private_message_post_length: 1,
       min_private_message_title_length: 1,
       allow_duplicate_topic_titles: true,

spec/models/site_setting_spec.rb

@@ -35,6 +35,12 @@ describe SiteSetting do
     end
   end
 
+  describe 'first_post_length' do
+    it 'returns a range of min/max first post length' do
+      expect(SiteSetting.first_post_length).to eq(SiteSetting.defaults[:min_first_post_length]..SiteSetting.defaults[:max_post_length])
+    end
+  end
+
   describe 'private_message_title_length' do
     it 'returns a range of min/max pm topic title length' do
       expect(SiteSetting.private_message_title_length).to eq(SiteSetting.defaults[:min_private_message_title_length]..SiteSetting.defaults[:max_topic_title_length])

test/javascripts/models/composer-test.js.es6

@@ -22,13 +22,15 @@ test('replyLength', function() {
 });
 
 test('missingReplyCharacters', function() {
-  var missingReplyCharacters = function(val, isPM, expected, message) {
-    var composer = Discourse.Composer.create({ reply: val, creatingPrivateMessage: isPM });
+  Discourse.SiteSettings.min_first_post_length = 40;
+  var missingReplyCharacters = function(val, isPM, isFirstPost, expected, message) {
+    var composer = Discourse.Composer.create({ reply: val, creatingPrivateMessage: isPM, creatingTopic: isFirstPost });
     equal(composer.get('missingReplyCharacters'), expected, message);
   };
 
-  missingReplyCharacters('hi', false, Discourse.SiteSettings.min_post_length - 2, 'too short public post');
-  missingReplyCharacters('hi', true,  Discourse.SiteSettings.min_private_message_post_length - 2, 'too short private message');
+  missingReplyCharacters('hi', false, false, Discourse.SiteSettings.min_post_length - 2, 'too short public post');
+  missingReplyCharacters('hi', false, true,  Discourse.SiteSettings.min_first_post_length - 2, 'too short first post');
+  missingReplyCharacters('hi', true, false,  Discourse.SiteSettings.min_private_message_post_length - 2, 'too short private message');
 });
 
 test('missingTitleCharacters', function() {