add campaign URL setting

assets/javascripts/discourse/initializers/patreon.js.es6

@@ -32,6 +32,7 @@ function initWithApi(api) {
         const showDonationPrompt =
           this.siteSettings.patreon_enabled &&
           this.siteSettings.patreon_donation_prompt_enabled &&
+          this.siteSettings.patreon_donation_prompt_campaign_url !== "" &&
           this.currentUser.show_donation_prompt &&
           $.cookie(cookieName) !== "t" &&
           numTopicsOpened >

assets/javascripts/discourse/templates/connectors/topic-above-footer-buttons/patreon.hbs

@@ -4,6 +4,7 @@
       {{d-icon "times"}}
     </span>
 
-    {{{i18n "patreon.donation_prompt.body"}}}
+    {{{i18n "patreon.donation_prompt.body"
+      campaignUrl=siteSettings.patreon_donation_prompt_campaign_url}}}
   </div>
 {{/if}}

config/locales/client.en.yml

@@ -40,5 +40,5 @@ en:
           <p>Thank you for your support!<p>
 
           <p>
-            <a class="btn btn-large btn-danger" href="#">Become a Patron</a>
+            <a class="btn btn-large btn-danger" href="{{campaignUrl}}">Become a Patron</a>
           </p>

config/locales/server.en.yml

@@ -14,6 +14,7 @@ en:
     patreon_verbose_log: 'enable verbose logging of patreon payload'
     patreon_donation_prompt_enabled: "Enable donation prompt?"
     patreon_donation_prompt_show_after_topics: "Show donation prompt after n topics"
+    patreon_donation_prompt_campaign_url: "Donation prompt campaign URL"
   dashboard:
     patreon:
       access_token_invalid: "Patreon Creator's access and refresh token values are incorrect. You must copy-paste new tokens from <a href='https://www.patreon.com/platform/documentation/clients'>Patreon website</a> to <a href='%{base_path}/admin/site_settings/category/all_results?filter=patreon'>site settings</a>."

config/settings.yml

@@ -36,3 +36,7 @@ plugins:
     default: 20
     client: true
     min: 0
+  patreon_donation_prompt_campaign_url:
+    default: ""
+    client: true
+    regex: "^https?:\/\/.+[^\/]$"