Store original link to documentation.

If original link is missing then attribute 'documentation' is updated
with actual link to docs.rs

Author: Douman

app/models/crate.js

@@ -15,6 +15,7 @@ export default DS.Model.extend({
     mailing_list: DS.attr('string'),
     issues: DS.attr('string'),
     documentation: DS.attr('string'),
+    originalDocumentation: DS.attr('string'),
     repository: DS.attr('string'),
     exact_match: DS.attr('boolean'),
 

app/routes/crate/version.js

@@ -41,8 +41,7 @@ export default Route.extend({
         };
 
         const fetchCrateDocumentation = () => {
-            if (!crate.get('documentation') ||
-                crate.get('documentation').substr(0, 16) === 'https://docs.rs/') {
+            if (!crate.get('originalDocumentation')) {
                 let crateName = crate.get('name');
                 let crateVersion = params.version_num;
                 this.get('ajax').request(`https://docs.rs/crate/${crateName}/${crateVersion}/builds.json`)

app/serializers/crate.js

@@ -2,6 +2,9 @@ import DS from 'ember-data';
 
 export default DS.RESTSerializer.extend({
     isNewSerializerAPI: true,
+    attrs: {
+        originalDocumentation: 'documentation'
+    },
 
     extractRelationships(modelClass, resourceHash) {
         if (resourceHash.versions == null) {