diff --git a/app/controllers/chat_controller.rb b/app/controllers/chat_controller.rb
index 3b74f49..2b2863e 100644
--- a/app/controllers/chat_controller.rb
+++ b/app/controllers/chat_controller.rb
@@ -6,11 +6,13 @@ class DiscourseChat::ChatController < ApplicationController
   end
 
   def list_providers
-    providers = ::DiscourseChat::Provider.enabled_providers.map { |x| {
-                                      name: x::PROVIDER_NAME,
-                                      id: x::PROVIDER_NAME,
-                                      channel_parameters: (defined? x::CHANNEL_PARAMETERS) ? x::CHANNEL_PARAMETERS : []
-                                      }}
+    providers = ::DiscourseChat::Provider.enabled_providers.map do |x|
+      {
+        name: x::PROVIDER_NAME,
+        id: x::PROVIDER_NAME,
+        channel_parameters: (defined? x::CHANNEL_PARAMETERS) ? x::CHANNEL_PARAMETERS : []
+      }
+    end
 
     render json: providers, root: 'providers'
   end
diff --git a/app/models/plugin_model.rb b/app/models/plugin_model.rb
index cc552bb..b353e2a 100644
--- a/app/models/plugin_model.rb
+++ b/app/models/plugin_model.rb
@@ -3,6 +3,7 @@ class DiscourseChat::PluginModel < PluginStoreRow
   KEY_PREFIX = 'unimplemented'
 
   after_initialize :init_plugin_model
+  default_scope { self.default_scope }
 
   def init_plugin_model
     self.type_name ||= 'JSON'
@@ -13,11 +14,13 @@ class DiscourseChat::PluginModel < PluginStoreRow
   def self.default_scope
     where(type_name: 'JSON')
       .where(plugin_name: self::PLUGIN_NAME)
-      .where("key like?", "#{self::KEY_PREFIX}%")
+      .where("key LIKE ?", "#{self::KEY_PREFIX}%")
   end
 
   before_save :set_key
+
   private
+
     def set_key
       self.key ||= self.class.alloc_key
     end
diff --git a/spec/controllers/chat_controller_spec.rb b/spec/controllers/chat_controller_spec.rb
index 08443c6..1157144 100644
--- a/spec/controllers/chat_controller_spec.rb
+++ b/spec/controllers/chat_controller_spec.rb
@@ -20,14 +20,14 @@ describe 'Chat Controller', type: :request do
   shared_examples 'admin constraints' do |action, route|
     context 'when user is not signed in' do
       it 'should raise the right error' do
-        expect { send(action, route) }.to raise_error(ActionController::RoutingError)
+        expect { public_send(action, route) }.to raise_error(ActionController::RoutingError)
       end
     end
 
     context 'when user is not an admin' do
       it 'should raise the right error' do
         sign_in(Fabricate(:user))
-        expect { send(action, route) }.to raise_error(ActionController::RoutingError)
+        expect { public_send(action, route) }.to raise_error(ActionController::RoutingError)
       end
     end
   end
@@ -66,7 +66,9 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should return the right response' do
-        post '/admin/plugins/chat/test.json', channel_id: channel.id, topic_id: topic.id
+        post '/admin/plugins/chat/test.json', params: {
+          channel_id: channel.id, topic_id: topic.id
+        }
 
         expect(response).to be_success
 
@@ -74,7 +76,9 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should fail for invalid channel' do
-        post '/admin/plugins/chat/test.json', channel_id: 999, topic_id: topic.id
+        post '/admin/plugins/chat/test.json', params: {
+          channel_id: 999, topic_id: topic.id
+        }
 
         expect(response).not_to be_success
       end
@@ -92,7 +96,7 @@ describe 'Chat Controller', type: :request do
       it 'should return the right response' do
         rule = DiscourseChat::Rule.create(channel: channel, filter: 'follow', category_id: category.id, tags: [tag.name])
 
-        get '/admin/plugins/chat/channels.json', provider: 'dummy'
+        get '/admin/plugins/chat/channels.json', params: { provider: 'dummy' }
 
         expect(response).to be_success
 
@@ -110,7 +114,7 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should fail for invalid provider' do
-        get '/admin/plugins/chat/channels.json', provider: 'someprovider'
+        get '/admin/plugins/chat/channels.json', params: { provider: 'someprovider' }
 
         expect(response).not_to be_success
       end
@@ -128,25 +132,27 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should be able to add a new channel' do
-        post '/admin/plugins/chat/channels.json',
+        post '/admin/plugins/chat/channels.json', params: {
           channel: {
             provider: 'dummy',
             data: {}
           }
+        }
 
         expect(response).to be_success
 
-        channel = DiscourseChat::Channel.all.first
+        channel = DiscourseChat::Channel.all.last
 
         expect(channel.provider).to eq('dummy')
       end
 
       it 'should fail for invalid params' do
-        post '/admin/plugins/chat/channels.json',
+        post '/admin/plugins/chat/channels.json', params: {
           channel: {
             provider: 'dummy2',
             data: { val: 'something with whitespace' }
           }
+        }
 
         expect(response).not_to be_success
 
@@ -166,25 +172,26 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should be able update a channel' do
-        put "/admin/plugins/chat/channels/#{channel.id}.json",
+        put "/admin/plugins/chat/channels/#{channel.id}.json", params: {
           channel: {
             data: { val: "something-else" }
           }
+        }
 
         expect(response).to be_success
 
-        channel = DiscourseChat::Channel.all.first
+        channel = DiscourseChat::Channel.all.last
         expect(channel.data).to eq("val" => "something-else")
       end
 
       it 'should fail for invalid params' do
-        put "/admin/plugins/chat/channels/#{channel.id}.json",
+        put "/admin/plugins/chat/channels/#{channel.id}.json", params: {
           channel: {
             data: { val: "something with whitespace" }
           }
+        }
 
         expect(response).not_to be_success
-
       end
     end
   end
@@ -204,7 +211,6 @@ describe 'Chat Controller', type: :request do
         delete "/admin/plugins/chat/channels/#{channel.id}.json"
 
         expect(response).to be_success
-
         expect(DiscourseChat::Channel.all.size).to eq(0)
       end
     end
@@ -220,17 +226,18 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should be able to add a new rule' do
-        post '/admin/plugins/chat/rules.json',
+        post '/admin/plugins/chat/rules.json', params: {
           rule: {
             channel_id: channel.id,
             category_id: category.id,
             filter: 'watch',
             tags: [tag.name]
           }
+        }
 
         expect(response).to be_success
 
-        rule = DiscourseChat::Rule.all.first
+        rule = DiscourseChat::Rule.all.last
 
         expect(rule.channel_id).to eq(channel.id)
         expect(rule.category_id).to eq(category.id)
@@ -240,16 +247,16 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should fail for invalid params' do
-        post '/admin/plugins/chat/rules.json',
+        post '/admin/plugins/chat/rules.json', params: {
           rule: {
             channel_id: channel.id,
             category_id: category.id,
             filter: 'watch',
             tags: ['somenonexistanttag']
           }
+        }
 
         expect(response).not_to be_success
-
       end
     end
   end
@@ -266,37 +273,38 @@ describe 'Chat Controller', type: :request do
       end
 
       it 'should be able update a rule' do
-        put "/admin/plugins/chat/rules/#{rule.id}.json",
+        put "/admin/plugins/chat/rules/#{rule.id}.json", params: {
           rule: {
             channel_id: channel.id,
             category_id: category2.id,
             filter: rule.filter,
             tags: rule.tags
           }
+        }
 
         expect(response).to be_success
 
-        rule = DiscourseChat::Rule.all.first
+        rule = DiscourseChat::Rule.all.last
         expect(rule.category_id).to eq(category2.id)
       end
 
       it 'should fail for invalid params' do
-        put "/admin/plugins/chat/rules/#{rule.id}.json",
+        put "/admin/plugins/chat/rules/#{rule.id}.json", params: {
           rule: {
             channel_id: channel.id,
             category_id: category.id,
             filter: 'watch',
             tags: ['somenonexistanttag']
           }
+        }
 
         expect(response).not_to be_success
-
       end
     end
   end
 
   describe 'deleting a rule' do
-    let(:rule) { DiscourseChat::Rule.create(channel_id: channel.id, filter: 'follow', category_id: category.id, tags: [tag.name]) }
+    let(:rule) { DiscourseChat::Rule.create!(channel_id: channel.id, filter: 'follow', category_id: category.id, tags: [tag.name]) }
 
     include_examples 'admin constraints', 'delete', "/admin/plugins/chat/rules/1.json"
 
@@ -310,7 +318,6 @@ describe 'Chat Controller', type: :request do
         delete "/admin/plugins/chat/rules/#{rule.id}.json"
 
         expect(response).to be_success
-
         expect(DiscourseChat::Rule.all.size).to eq(0)
       end
     end
diff --git a/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb b/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
index 387f3a4..2e8cb60 100644
--- a/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
@@ -38,7 +38,9 @@ describe 'Mattermost Command Controller', type: :request do
         token = 'sometoken'
         SiteSetting.chat_integration_mattermost_incoming_webhook_token = token
 
-        post '/chat-integration/mattermost/command.json', text: 'help', token: token
+        post '/chat-integration/mattermost/command.json', params: {
+          text: 'help', token: token
+        }
 
         expect(response.status).to eq(200)
       end
@@ -46,14 +48,16 @@ describe 'Mattermost Command Controller', type: :request do
 
     describe 'when the token is invalid' do
       it 'should raise the right error' do
-        expect { post '/chat-integration/mattermost/command.json', text: 'help' }
+        expect { post '/chat-integration/mattermost/command.json', params: {  text: 'help' } }
           .to raise_error(ActionController::ParameterMissing)
       end
     end
 
     describe 'when incoming webhook token has not been set' do
       it 'should raise the right error' do
-        post '/chat-integration/mattermost/command.json', text: 'help', token: 'some token'
+        post '/chat-integration/mattermost/command.json', params: {
+          text: 'help', token: 'some token'
+        }
 
         expect(response.status).to eq(403)
       end
@@ -72,10 +76,11 @@ describe 'Mattermost Command Controller', type: :request do
       describe 'add new rule' do
 
         it 'should add a new rule correctly' do
-          post "/chat-integration/mattermost/command.json",
+          post "/chat-integration/mattermost/command.json", params: {
             text: "watch #{category.slug}",
             channel_name: 'welcome',
             token: token
+          }
 
           json = JSON.parse(response.body)
 
@@ -90,10 +95,11 @@ describe 'Mattermost Command Controller', type: :request do
 
         context 'from an unknown channel' do
           it 'creates the channel' do
-            post "/chat-integration/mattermost/command.json",
-            text: "watch #{category.slug}",
-            channel_name: 'general',
-            token: token
+            post "/chat-integration/mattermost/command.json", params: {
+              text: "watch #{category.slug}",
+              channel_name: 'general',
+              token: token
+            }
 
             json = JSON.parse(response.body)
 
diff --git a/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
index 35f2727..ec52aac 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
@@ -38,7 +38,9 @@ describe 'Slack Command Controller', type: :request do
         token = 'sometoken'
         SiteSetting.chat_integration_slack_incoming_webhook_token = token
 
-        post '/chat-integration/slack/command.json', text: 'help', token: token
+        post '/chat-integration/slack/command.json', params: {
+          text: 'help', token: token
+        }
 
         expect(response.status).to eq(200)
       end
@@ -46,14 +48,16 @@ describe 'Slack Command Controller', type: :request do
 
     describe 'when the token is invalid' do
       it 'should raise the right error' do
-        expect { post '/chat-integration/slack/command.json', text: 'help' }
+        expect { post '/chat-integration/slack/command.json', params: { text: 'help' } }
           .to raise_error(ActionController::ParameterMissing)
       end
     end
 
     describe 'when incoming webhook token has not been set' do
       it 'should raise the right error' do
-        post '/chat-integration/slack/command.json', text: 'help', token: 'some token'
+        post '/chat-integration/slack/command.json', params: {
+          text: 'help', token: 'some token'
+        }
 
         expect(response.status).to eq(403)
       end
@@ -72,10 +76,11 @@ describe 'Slack Command Controller', type: :request do
       describe 'add new rule' do
 
         it 'should add a new rule correctly' do
-          post "/chat-integration/slack/command.json",
+          post "/chat-integration/slack/command.json", params: {
             text: "watch #{category.slug}",
             channel_name: 'welcome',
             token: token
+          }
 
           json = JSON.parse(response.body)
 
@@ -90,10 +95,11 @@ describe 'Slack Command Controller', type: :request do
 
         context 'from an unknown channel' do
           it 'creates the channel' do
-            post "/chat-integration/slack/command.json",
-            text: "watch #{category.slug}",
-            channel_name: 'general',
-            token: token
+            post "/chat-integration/slack/command.json", params: {
+              text: "watch #{category.slug}",
+              channel_name: 'general',
+              token: token
+            }
 
             json = JSON.parse(response.body)
 
@@ -184,12 +190,13 @@ describe 'Slack Command Controller', type: :request do
               .with(body: /attachments/)
               .to_return(body: { ok: true }.to_json)
 
-            post "/chat-integration/slack/command.json",
+            post "/chat-integration/slack/command.json", params: {
               text: "post",
               response_url: 'https://hooks.slack.com/commands/1234',
               channel_name: 'general',
               channel_id: 'C6029G78F',
               token: token
+            }
 
             expect(command_stub).to have_been_requested
           end
@@ -199,12 +206,13 @@ describe 'Slack Command Controller', type: :request do
               .with(body: /1501801629\.052212/)
               .to_return(body: { ok: true }.to_json)
 
-            post "/chat-integration/slack/command.json",
+            post "/chat-integration/slack/command.json", params: {
               text: "post https://sometestslack.slack.com/archives/C6029G78F/p1501801629052212",
               response_url: 'https://hooks.slack.com/commands/1234',
               channel_name: 'general',
               channel_id: 'C6029G78F',
               token: token
+            }
 
             expect(command_stub).to have_been_requested
           end
@@ -214,12 +222,13 @@ describe 'Slack Command Controller', type: :request do
               .with(body: /1501801629\.052212/)
               .to_return(body: { ok: true }.to_json)
 
-            post "/chat-integration/slack/command.json",
+            post "/chat-integration/slack/command.json", params: {
               text: "post 4",
               response_url: 'https://hooks.slack.com/commands/1234',
               channel_name: 'general',
               channel_id: 'C6029G78F',
               token: token
+            }
 
             expect(command_stub).to have_been_requested
           end
@@ -229,12 +238,13 @@ describe 'Slack Command Controller', type: :request do
               .with(body: /1501615820\.949638/)
               .to_return(body: { ok: true }.to_json)
 
-            post "/chat-integration/slack/command.json",
+            post "/chat-integration/slack/command.json", params: {
               text: "post",
               response_url: 'https://hooks.slack.com/commands/1234',
               channel_name: 'general',
               channel_id: 'C6029G78F',
               token: token
+            }
 
             expect(command_stub).to have_been_requested
           end
@@ -243,12 +253,13 @@ describe 'Slack Command Controller', type: :request do
         it 'deals with failed API calls correctly' do
           stub1 = stub_request(:post, "https://slack.com/api/users.list").to_return(status: 403)
 
-          post "/chat-integration/slack/command.json",
+          post "/chat-integration/slack/command.json", params: {
             text: "post 2",
             response_url: 'https://hooks.slack.com/commands/1234',
             channel_name: 'general',
             channel_id: 'C6029G78F',
             token: token
+          }
 
           json = JSON.parse(response.body)
 
@@ -258,12 +269,13 @@ describe 'Slack Command Controller', type: :request do
         it 'errors correctly if there is no api key' do
           SiteSetting.chat_integration_slack_access_token = ''
 
-          post "/chat-integration/slack/command.json",
+          post "/chat-integration/slack/command.json", params: {
             text: "post 2",
             response_url: 'https://hooks.slack.com/commands/1234',
             channel_name: 'general',
             channel_id: 'C6029G78F',
             token: token
+          }
 
           json = JSON.parse(response.body)
 
diff --git a/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb b/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
index e6f9b05..6a1f6d7 100644
--- a/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
@@ -36,7 +36,10 @@ describe 'Telegram Command Controller', type: :request do
     describe 'when forum is private' do
       it 'should not redirect to login page' do
         SiteSetting.login_required = true
-        post '/chat-integration/telegram/command/shhh.json', message: { chat: { id: 123 }, text: '/help' }
+
+        post '/chat-integration/telegram/command/shhh.json', params: {
+          message: { chat: { id: 123 }, text: '/help' }
+        }
 
         expect(response.status).to eq(200)
       end
@@ -44,7 +47,10 @@ describe 'Telegram Command Controller', type: :request do
 
     describe 'when the token is invalid' do
       it 'should raise the right error' do
-        post '/chat-integration/telegram/command/blah.json', message: { chat: { id: 123 }, text: '/help' }
+        post '/chat-integration/telegram/command/blah.json', params: {
+           message: { chat: { id: 123 }, text: '/help' }
+        }
+
         expect(response.status).to eq(403)
       end
     end
@@ -52,7 +58,9 @@ describe 'Telegram Command Controller', type: :request do
     describe 'when token has not been set' do
       it 'should raise the right error' do
         SiteSetting.chat_integration_telegram_access_token = ""
-        post '/chat-integration/telegram/command/blah.json', message: { chat: { id: 123 }, text: '/help' }
+        post '/chat-integration/telegram/command/blah.json', params: {
+           message: { chat: { id: 123 }, text: '/help' }
+        }
 
         expect(response.status).to eq(403)
       end
@@ -68,7 +76,9 @@ describe 'Telegram Command Controller', type: :request do
       describe 'add new rule' do
 
         it 'should add a new rule correctly' do
-          post '/chat-integration/telegram/command/shhh.json', message: { chat: { id: 123 }, text: "/watch #{category.slug}" }
+          post '/chat-integration/telegram/command/shhh.json', params: {
+            message: { chat: { id: 123 }, text: "/watch #{category.slug}" }
+          }
 
           expect(response.status).to eq(200)
           expect(stub).to have_been_requested.once
@@ -81,7 +91,9 @@ describe 'Telegram Command Controller', type: :request do
         end
 
         it 'should add a new rule correctly using group chat syntax' do
-          post '/chat-integration/telegram/command/shhh.json', message: { chat: { id: 123 }, text: "/watch@my-awesome-bot #{category.slug}" }
+          post '/chat-integration/telegram/command/shhh.json', params: {
+            message: { chat: { id: 123 }, text: "/watch@my-awesome-bot #{category.slug}" }
+          }
 
           expect(response.status).to eq(200)
           expect(stub).to have_been_requested.once
@@ -95,7 +107,10 @@ describe 'Telegram Command Controller', type: :request do
 
         context 'from an unknown channel' do
           it 'does nothing' do
-            post '/chat-integration/telegram/command/shhh.json', message: { chat: { id: 456 }, text: "/watch #{category.slug}" }
+            post '/chat-integration/telegram/command/shhh.json', params: {
+              message: { chat: { id: 456 }, text: "/watch #{category.slug}" }
+            }
+
             expect(DiscourseChat::Rule.all.size).to eq(0)
             expect(DiscourseChat::Channel.all.size).to eq(1)
           end
@@ -103,12 +118,16 @@ describe 'Telegram Command Controller', type: :request do
       end
 
       it "should respond only to a specific command in a broadcast channel" do
-        post '/chat-integration/telegram/command/shhh.json', channel_post: { chat: { id: 123 }, text: "something" }
+        post '/chat-integration/telegram/command/shhh.json', params: {
+          channel_post: { chat: { id: 123 }, text: "something" }
+        }
 
         expect(response.status).to eq(200)
         expect(stub).to have_been_requested.times(0)
 
-        post '/chat-integration/telegram/command/shhh.json', channel_post: { chat: { id: 123 }, text: "/getchatid" }
+        post '/chat-integration/telegram/command/shhh.json', params: {
+          channel_post: { chat: { id: 123 }, text: "/getchatid" }
+        }
 
         expect(response.status).to eq(200)
         expect(stub).to have_been_requested.times(1)