upload config 'accept' implemented to define accept values for the input

Author: jankapunkt

lib/client/fileUpload.html

@@ -16,15 +16,15 @@
     {{/if}}
   {{else}}
     {{#if uploadTemplate}}
-      {{>Template.dynamic template=uploadTemplate data=currentUpload}}
+      {{>Template.dynamic template=uploadTemplate data=uploadTemplateData}}
     {{else}}
       {{#with currentUpload}}
         Uploading <b>{{file.name}}</b>:
         <progress value="{{progress.get}}" max="100"></progress>
         &nbsp;
         <span class="progress">{{progress.get}}%</span>
       {{else}}
-        <input data-files-collection-upload class="form-control af-file-upload-capture" type="file" />
+        <input data-files-collection-upload class="form-control af-file-upload-capture" type="file" accept="{{accept}}" />
       {{/with}}
     {{/if}}
   {{/with}}

lib/client/fileUpload.js

@@ -51,6 +51,7 @@ Template.afFileUpload.onCreated(function () {
 
   this.uploadTemplate  = this.data.atts.uploadTemplate || null;
   this.previewTemplate = this.data.atts.previewTemplate || null;
+  this.accept          = this.data.atts.accept || null;
   this.insertConfig    = Object.assign({}, this.data.atts.insertConfig || {});
   delete this.data.atts.insertConfig;
   this.insertConfig    = Object.assign(this.insertConfig, _.pick(this.data.atts, Object.keys(defaultInsertOpts)));
@@ -80,6 +81,20 @@ Template.afFileUpload.helpers({
   uploadTemplate() {
     return Template.instance().uploadTemplate;
   },
+  uploadTemplateData() {
+    const instance = Template.instance();
+    const currentUpload = instance.currentUpload.get();
+    const { accept } = instance;
+
+    // here we can check for upload template configs, that have been added after 2.1.4 and return either
+    // an object with "config" merged with "currentUpload" to stay backwards compatible as popssible
+    if (accept) {
+      const config = { config: { accept } };
+      return Object.assign({}, config, currentUpload);
+    } else {
+      return currentUpload;
+    }
+  },
   currentUpload() {
     return Template.instance().currentUpload.get();
   },
@@ -93,6 +108,9 @@ Template.afFileUpload.helpers({
       return null;
     }
     return template.collection.findOne({_id});
+  },
+  accept() {
+    return Template.instance().accept;
   }
 });