Number view.

cms/static/client_templates/metadata_number_entry.html

 <div class="wrapper-comp-setting">
 	<label class="label setting-label" for="<%= uniqueId %>"><%= model.get('display_name') %></label>
-	<input class="input setting-input" type="number" min=".1" max= "10" step=".1" id="<%= uniqueId %>" value='<%= model.get("value") %>'/>
+	<input class="input setting-input" type="number" min="1" max= "10" step="1" id="<%= uniqueId %>" value='<%= model.get("value") %>'/>
 	<button class="action setting-clear inactive" type="button" name="setting-clear" value="Clear" data-tooltip="Clear">
 		<i class="ss-icon ss-symbolicons-block undo">&#x21A9;</i><span class="sr">Clear Value</span>
 	</button>

cms/static/js/views/metadata_editor_view.js

@@ -30,15 +30,15 @@ CMS.Views.Metadata.Editor = Backbone.View.extend({
                             el: self.$el.find('.metadata_entry')[counter++],
                             model: new CMS.Models.Metadata(item)
                         };
-                        if (item.options.length > 0) {
-                            // Right now, all our option types only hold strings. Should really support
-                            // any type though.
+                        if (item.type === 'Select') {
                             self.views.push(new CMS.Views.Metadata.Option(data));
                         }
+                        else if (item.type === 'Integer' || item.type === 'Float') {
+                            self.views.push(new CMS.Views.Metadata.Number(data));
+                        }
                         else {
                             self.views.push(new CMS.Views.Metadata.String(data));
                         }
-
                     });
             }
         );
@@ -151,6 +151,28 @@ CMS.Views.Metadata.String = CMS.Views.Metadata.AbstractEditor.extend({
     }
 });
 
+CMS.Views.Metadata.Number = CMS.Views.Metadata.AbstractEditor.extend({
+
+    events : {
+        "change input" : "updateModel",
+        "keypress .setting-input" : "showClearButton"  ,
+        "click .setting-clear" : "clear"
+    },
+
+    getTemplateName : function () {
+        return "metadata_number_entry";
+    },
+
+    getValueFromEditor : function () {
+        return this.$el.find('#' + this.uniqueId).val();
+    },
+
+    setValueInEditor : function (value) {
+        this.$el.find('input').val(value);
+    }
+});
+
+
 CMS.Views.Metadata.Option = CMS.Views.Metadata.AbstractEditor.extend({
 
     events : {

common/lib/xmodule/xmodule/capa_module.py

@@ -63,7 +63,8 @@ class ComplexEncoder(json.JSONEncoder):
 class CapaFields(object):
     attempts = StringyInteger(help="Number of attempts taken by the student on this problem", default=0, scope=Scope.user_state)
     max_attempts = StringyInteger(display_name="Maximum Attempts",
-        help="When set, this specifies the number of times the student can try to answer this problem.", scope=Scope.settings)
+        help="This specifies the number of times the student can try to answer this problem. If unset, infinite attempts are allowed.",
+        values = {"min" : 1 }, scope=Scope.settings)
     due = Date(help="Date that this problem is due by", scope=Scope.settings)
     graceperiod = Timedelta(help="Amount of time after the due date that submissions will be accepted", scope=Scope.settings)
     showanswer = String(display_name="Show Answer",
@@ -87,7 +88,8 @@ class CapaFields(object):
     done = Boolean(help="Whether the student has answered the problem", scope=Scope.user_state)
     seed = StringyInteger(help="Random seed for this student", scope=Scope.user_state)
     weight = StringyFloat(display_name="Problem Weight",
-        help="Specifies the number of points the problem is worth. By default, each response field in the problem is worth one point.",
+        help="Specifies the number of points the problem is worth. If unset, each response field in the problem is worth one point.",
+        values = {"min" : 0 },
         scope=Scope.settings)
     markdown = String(help="Markdown source of this module", scope=Scope.settings)
     source_code = String(help="Source code for LaTeX and Word problems. This feature is not well-supported.",

common/lib/xmodule/xmodule/combined_open_ended_module.py

@@ -57,7 +57,8 @@ class CombinedOpenEndedFields(object):
     ready_to_reset = Boolean(help="If the problem is ready to be reset or not.", default=False,
                              scope=Scope.user_state)
     attempts = Integer(display_name="Maximum Attempts",
-        help="Specifies the number of times the student can try to answer this problem.", default=1, scope=Scope.settings)
+        help="Specifies the number of times the student can try to answer this problem.", default=1,
+        scope=Scope.settings)
     # TODO: move values to Boolean in xblock.
     is_graded = Boolean(display_name="Graded", help="Whether or not the problem is graded.", default=False, scope=Scope.settings,
         values=[{'display_name': "True", "value": True}, {'display_name': "False", "value": False}])

common/lib/xmodule/xmodule/x_module.py

@@ -9,7 +9,7 @@ from pkg_resources import resource_listdir, resource_string, resource_isdir
 from xmodule.modulestore import Location
 from xmodule.modulestore.exceptions import ItemNotFoundError
 
-from xblock.core import XBlock, Scope, String
+from xblock.core import XBlock, Scope, String, Integer, Float
 
 log = logging.getLogger(__name__)
 
@@ -649,17 +649,29 @@ class XModuleDescriptor(XModuleFields, HTMLSnippet, ResourceTemplates, XBlock):
                                     'inheritable': inheritable,
                                     'explicitly_set': explicitly_set}
 
+            # We support the following editors:
+            # 1. A select editor for fields with a list of possible values (includes Booleans).
+            # 2. Number editor for integers and floats.
+            # 3. A generic string editor for anything else (editing JSON representation of the value).
+            type = "Generic"
+            # TODO: test all this logic
             values = [] if field.values is None else field.values
-            for index, choice in enumerate(values):
-                json_choice = choice
-                # TODO: test this logic.
-                if hasattr(json_choice, 'value'):
-                    json_choice['value'] = field.to_json(json_choice['value'])
-                else:
-                    json_choice = field.to_json(json_choice)
-                values[index] = json_choice
-
+            if isinstance(values, list):
+                if len(values) > 0:
+                    type = "Select"
+                for index, choice in enumerate(values):
+                    json_choice = choice
+                    if hasattr(json_choice, 'value'):
+                        json_choice['value'] = field.to_json(json_choice['value'])
+                    else:
+                        json_choice = field.to_json(json_choice)
+                    values[index] = json_choice
+            elif isinstance(field, Integer):
+                type = "Integer"
+            elif isinstance(field, Float):
+                type = "Float"
             simple_metadata[field.name] = {'field_name' : field.name,
+                                           'type' : type,
                                            'display_name' : field.display_name,
                                            'value': field.to_json(value),
                                            'options' : values,