Use integer for contributor ID everywhere

closes #145

app/components/add-contribution/component.js

@@ -9,7 +9,15 @@ export default Component.extend({
   kredits: service(),
 
   attributes: null,
-  contributors: alias('kredits.contributorsSorted'),
+
+  contributors: computed('kredits.contributorsSorted.[]', function() {
+    return this.kredits.contributorsSorted.map(c => {
+      return {
+        id: c.id.toString(),
+        name: c.name
+      }
+    })
+  }),
 
   isValidContributor: notEmpty('contributorId'),
   isValidKind: notEmpty('kind'),
@@ -57,6 +65,8 @@ export default Component.extend({
 
       const attributes = this.getProperties(Object.keys(this.attributes));
 
+      attributes.contributorId = parseInt(this.contributorId);
+
       let dateInput = (attributes.date instanceof Array) ?
         attributes.date[0] : attributes.date;
 

app/components/add-contribution/template.hbs

@@ -4,7 +4,7 @@
     <p>
       <select required onchange={{action (mut this.contributorId) value="target.value"}}>
         <option value="" selected disabled hidden></option>
-        {{#each @contributors as |contributor|}}
+        {{#each this.contributors as |contributor|}}
           <option value={{contributor.id}} selected={{eq this.contributorId contributor.id}}>{{contributor.name}}</option>
         {{/each}}
       </select>

app/components/contribution-list/component.js

@@ -24,10 +24,9 @@ export default Component.extend({
   contributors: sort('kredits.contributors', 'contributorsSorting'),
 
   contributorsActive: computed('contributors.[]', 'contributions', function() {
-    const activeIds = new Set(this.contributions.mapBy('contributorId')
-                                                .map(id => id.toString()));
+    const activeIds = new Set(this.contributions.mapBy('contributorId'));
 
-    return this.contributors.filter(c => activeIds.has(c.id.toString()));
+    return this.contributors.filter(c => activeIds.has(c.id));
   }),
 
   contributionKinds: computed('contributions.[]', function() {
@@ -42,7 +41,7 @@ export default Component.extend({
           c.amount <= 500) { included = false; }
 
       if (isPresent(this.contributorId) &&
-          c.contributorId.toString() !== this.contributorId.toString()) { included = false; }
+          c.contributorId !== parseInt(this.contributorId)) { included = false; }
 
       if (isPresent(this.contributionKind) &&
           c.kind !== this.contributionKind) { included = false; }