Prevent saving when textbook is in invalid state

cms/static/coffee/spec/views/textbook_spec.coffee

@@ -96,31 +96,53 @@ describe "CMS.Views.EditTextbook", ->
         it "should save properly", ->
             @view.render()
             @view.$("input[name=textbook-name]").val("starfish")
-            @view.$("input[name=chapter1-name]").val("foobar")
+            @view.$("input[name=chapter1-asset-path]").val("foobar")
             @view.$("form").submit()
             expect(@model.get("name")).toEqual("starfish")
-            expect(@model.get("chapters").at(0).get("name")).toEqual("foobar")
+            expect(@model.get("chapters").at(0).get("asset_path")).toEqual("foobar")
             expect(@model.save).toHaveBeenCalled()
 
+        it "should not save on invalid", ->
+            @view.render()
+            @view.$("input[name=textbook-name]").val("")
+            @view.$("input[name=chapter1-asset-path]").val("foobar.pdf")
+            @view.$("form").submit()
+            expect(@model.validationError).toBeTruthy()
+            expect(@model.save).not.toHaveBeenCalled()
+
         it "does not save on cancel", ->
             @model.get("chapters").add([{name: "a", asset_path: "b"}])
             @view.render()
             @view.$("input[name=textbook-name]").val("starfish")
-            @view.$("input[name=chapter1-name]").val("foobar")
+            @view.$("input[name=chapter1-asset-path]").val("foobar.pdf")
             @view.$(".action-cancel").click()
             expect(@model.get("name")).not.toEqual("starfish")
-            expect(@model.get("chapters").at(0).get("name")).not.toEqual("foobar")
+            expect(@model.get("chapters").first().get("asset_path")).not.toEqual("foobar")
+            expect(@model.save).not.toHaveBeenCalled()
+
+        it "should be possible to correct validation errors", ->
+            @view.render()
+            @view.$("input[name=textbook-name]").val("")
+            @view.$("input[name=chapter1-asset-path]").val("foobar.pdf")
+            @view.$("form").submit()
+            expect(@model.validationError).toBeTruthy()
             expect(@model.save).not.toHaveBeenCalled()
+            @view.$("input[name=textbook-name]").val("starfish")
+            @view.$("input[name=chapter1-name]").val("foobar")
+            @view.$("form").submit()
+            expect(@model.validationError).toBeFalsy()
+            expect(@model.save).toHaveBeenCalled()
 
         it "removes all empty chapters on cancel if the model has a non-empty chapter", ->
             chapters = @model.get("chapters")
             chapters.at(0).set("name", "non-empty")
+            @model.setOriginalAttributes()
             @view.render()
             chapters.add([{}, {}, {}]) # add three empty chapters
             expect(chapters.length).toEqual(4)
             @view.$(".action-cancel").click()
             expect(chapters.length).toEqual(1)
-            expect(chapters.at(0).get('name')).toEqual("non-empty")
+            expect(chapters.first().get('name')).toEqual("non-empty")
 
         it "removes all empty chapters on cancel except one if the model has no non-empty chapters", ->
             chapters = @model.get("chapters")

cms/static/js/models/textbook.js

@@ -21,7 +21,7 @@ CMS.Models.Textbook = Backbone.AssociatedModel.extend({
         this._originalAttributes = this.parse(this.toJSON());
     },
     reset: function() {
-        this.set(this._originalAttributes);
+        this.set(this._originalAttributes, {parse: true});
     },
     isEmpty: function() {
         return !this.get('name') && this.get('chapters').isEmpty();

cms/static/js/views/textbook.js

@@ -65,6 +65,7 @@ CMS.Views.ShowTextbook = Backbone.View.extend({
 CMS.Views.EditTextbook = Backbone.View.extend({
     initialize: function() {
         this.template = _.template($("#edit-textbook-tpl").text());
+        this.listenTo(this.model, "invalid", this.render);
         var chapters = this.model.get('chapters');
         this.listenTo(chapters, "add", this.addOne);
         this.listenTo(chapters, "reset", this.addAll);
@@ -75,7 +76,7 @@ CMS.Views.EditTextbook = Backbone.View.extend({
     render: function() {
         this.$el.html(this.template({
             name: this.model.escape('name'),
-            errors: null
+            error: this.model.validationError
         }));
         this.addAll();
         return this;
@@ -119,13 +120,14 @@ CMS.Views.EditTextbook = Backbone.View.extend({
     setAndClose: function(e) {
         if(e && e.preventDefault) { e.preventDefault(); }
         this.setValues();
+        if(!this.model.isValid()) { return; }
         var saving = new CMS.Views.Notification.Saving({
             title: gettext("Saving…")
         });
         var that = this;
         this.model.save({}, {
             success: function() {
-                that.setOriginalAttributes();
+                that.model.setOriginalAttributes();
                 that.close();
             },
             complete: function() {

cms/templates/js/edit-textbook.underscore

 <form class="edit-textbook" id="edit_textbook_form">
   <div class="wrapper-form">
-  <% if (errors) { %>
+  <% if (error) { %>
     <div id="edit_textbook_error" class="message message-status message-status error" name="edit_textbook_error">
-      <%= errors %>
+      <%= error %>
     </div>
   <% } %>