diff --git a/superset/assets/javascripts/dashboard/Dashboard.jsx b/superset/assets/javascripts/dashboard/Dashboard.jsx
index dc02a7ef14f44..e8509a5f06320 100644
--- a/superset/assets/javascripts/dashboard/Dashboard.jsx
+++ b/superset/assets/javascripts/dashboard/Dashboard.jsx
@@ -14,8 +14,8 @@ import Header from './components/Header';
 require('bootstrap');
 require('../../stylesheets/dashboard.css');
 
-export function getInitialState(dashboardData, context) {
-  const dashboard = Object.assign({ context }, utils.controllerInterface, dashboardData);
+export function getInitialState(boostrapData) {
+  const dashboard = Object.assign({}, utils.controllerInterface, boostrapData.dashboard_data);
   dashboard.firstLoad = true;
 
   dashboard.posDict = {};
@@ -24,12 +24,8 @@ export function getInitialState(dashboardData, context) {
       dashboard.posDict[position.slice_id] = position;
     });
   }
-  dashboard.curUserId = dashboard.context.user_id;
   dashboard.refreshTimer = null;
-
-  const state = {
-    dashboard,
-  };
+  const state = Object.assign({}, boostrapData, { dashboard });
   return state;
 }
 
@@ -98,19 +94,19 @@ function initDashboardView(dashboard) {
   $('[data-toggle="tooltip"]').tooltip({ container: 'body' });
 }
 
-export function dashboardContainer(dashboard) {
+export function dashboardContainer(dashboard, datasources) {
   return Object.assign({}, dashboard, {
     type: 'dashboard',
     filters: {},
     init() {
       this.sliceObjects = [];
-      dashboard.slices.forEach((data) => {
+      dashboard.slices.forEach(data => {
         if (data.error) {
-          const html = '<div class="alert alert-danger">' + data.error + '</div>';
-          $('#slice_' + data.slice_id).find('.token').html(html);
+          const html = `<div class="alert alert-danger">${data.error}</div>`;
+          $(`#slice_${data.slice_id}`).find('.token').html(html);
         } else {
-          const slice = px.Slice(data, this);
-          $('#slice_' + data.slice_id).find('a.refresh').click(() => {
+          const slice = px.Slice(data, datasources[data.form_data.datasource], this);
+          $(`#slice_${data.slice_id}`).find('a.refresh').click(() => {
             slice.render(true);
           });
           this.sliceObjects.push(slice);
@@ -337,11 +333,10 @@ export function dashboardContainer(dashboard) {
 $(document).ready(() => {
   // Getting bootstrapped data from the DOM
   utils.initJQueryAjaxCSRF();
-  const dashboardData = $('.dashboard').data('dashboard');
-  const contextData = $('.dashboard').data('context');
+  const dashboardData = $('.dashboard').data('bootstrap');
 
-  const state = getInitialState(dashboardData, contextData);
-  const dashboard = dashboardContainer(state.dashboard);
+  const state = getInitialState(dashboardData);
+  const dashboard = dashboardContainer(state.dashboard, state.datasources);
   initDashboardView(dashboard);
   dashboard.init();
 });
diff --git a/superset/assets/javascripts/dashboard/components/Controls.jsx b/superset/assets/javascripts/dashboard/components/Controls.jsx
index cb78d862bcd8a..463a75ffb3251 100644
--- a/superset/assets/javascripts/dashboard/components/Controls.jsx
+++ b/superset/assets/javascripts/dashboard/components/Controls.jsx
@@ -43,7 +43,7 @@ class Controls extends React.PureComponent {
   }
   render() {
     const dashboard = this.props.dashboard;
-    const canSave = dashboard.context.dash_save_perm;
+    const canSave = dashboard.dash_save_perm;
     const emailBody = `Checkout this dashboard: ${window.location.href}`;
     const emailLink = 'mailto:?Subject=Superset%20Dashboard%20'
       + `${dashboard.dashboard_title}&Body=${emailBody}`;
diff --git a/superset/assets/javascripts/dashboard/components/Header.jsx b/superset/assets/javascripts/dashboard/components/Header.jsx
index 58230b95cdebf..3e8e407f86a95 100644
--- a/superset/assets/javascripts/dashboard/components/Header.jsx
+++ b/superset/assets/javascripts/dashboard/components/Header.jsx
@@ -25,7 +25,7 @@ class Header extends React.PureComponent {
           </h1>
         </div>
         <div className="pull-right" style={{ marginTop: '35px' }}>
-        {!this.props.dashboard.context.standalone_mode &&
+        {!this.props.dashboard.standalone_mode &&
           <Controls dashboard={dashboard} />
         }
         </div>
diff --git a/superset/assets/javascripts/modules/superset.js b/superset/assets/javascripts/modules/superset.js
index 6076875dec23a..d95d159acbf6a 100644
--- a/superset/assets/javascripts/modules/superset.js
+++ b/superset/assets/javascripts/modules/superset.js
@@ -55,7 +55,7 @@ const px = function () {
     })
     .tooltip();
   }
-  const Slice = function (data, controller) {
+  const Slice = function (data, datasource, controller) {
     let timer;
     const token = $('#token_' + data.slice_id);
     const containerId = 'con_' + data.slice_id;
@@ -74,6 +74,7 @@ const px = function () {
       formData,
       container,
       containerId,
+      datasource,
       selector,
       getWidgetHeader() {
         return this.container.parents('div.widget').find('.chart-header');
@@ -105,11 +106,11 @@ const px = function () {
       d3format(col, number) {
         // uses the utils memoized d3format function and formats based on
         // column level defined preferences
-        if (data.column_formats) {
-          const format = data.column_formats[col];
-          return utils.d3format(format, number);
+        let format = '.3s';
+        if (this.datasource.column_formats[col]) {
+          format = this.datasource.column_formats[col];
         }
-        return utils.d3format('.3s', number);
+        return utils.d3format(format, number);
       },
       /* eslint no-shadow: 0 */
       always(data) {
diff --git a/superset/connectors/base.py b/superset/connectors/base.py
index c96f2bbb9969b..02016a09319f8 100644
--- a/superset/connectors/base.py
+++ b/superset/connectors/base.py
@@ -44,6 +44,11 @@ class BaseDatasource(AuditMixinNullable, ImportMixin):
     # placeholder for a relationship to a derivative of BaseMetric
     metrics = []
 
+    @property
+    def uid(self):
+        """Unique id across datasource types"""
+        return "{self.id}__{self.type}".format(**locals())
+
     @property
     def column_names(self):
         return sorted([c.column_name for c in self.columns])
diff --git a/superset/models/core.py b/superset/models/core.py
index 79b2e63b8b32b..0cbcd15c4b413 100644
--- a/superset/models/core.py
+++ b/superset/models/core.py
@@ -336,11 +336,11 @@ def dashboard_link(self):
             '<a href="{self.url}">{title}</a>'.format(**locals()))
 
     @property
-    def json_data(self):
+    def data(self):
         positions = self.position_json
         if positions:
             positions = json.loads(positions)
-        d = {
+        return {
             'id': self.id,
             'metadata': self.params_dict,
             'css': self.css,
@@ -349,7 +349,6 @@ def json_data(self):
             'slices': [slc.data for slc in self.slices],
             'position_json': positions,
         }
-        return json.dumps(d)
 
     @property
     def params(self):
diff --git a/superset/templates/superset/dashboard.html b/superset/templates/superset/dashboard.html
index f899d6fa0a24b..8fe4a6ed5bfc1 100644
--- a/superset/templates/superset/dashboard.html
+++ b/superset/templates/superset/dashboard.html
@@ -6,13 +6,12 @@
     {% include "superset/partials/_script_tag.html" %}
   {% endwith %}
 {% endblock %}
-{% block title %}[dashboard] {{ dashboard.dashboard_title }}{% endblock %}
+{% block title %}[dashboard] {{ dashboard_title }}{% endblock %}
 {% block body %}
 
 <div
   class="dashboard container-fluid"
-  data-dashboard="{{ dashboard.json_data }}"
-  data-context="{{ context }}"
+  data-bootstrap="{{ bootstrap_data }}"
 >
   {% include 'superset/flash_wrapper.html' %}
 
diff --git a/superset/views/core.py b/superset/views/core.py
index 1d4e4f88a0e5d..1c0b7bb688aba 100755
--- a/superset/views/core.py
+++ b/superset/views/core.py
@@ -1257,7 +1257,7 @@ def copy_dash(self, dashboard_id):
         self._set_dash_metadata(dash, data)
         session.add(dash)
         session.commit()
-        dash_json = dash.json_data
+        dash_json = json.dumps(dash.data)
         session.close()
         return json_success(dash_json)
 
@@ -1628,29 +1628,36 @@ def dashboard(self, dashboard_id):
                     "danger")
                 return redirect(
                     'superset/request_access/?'
-                    'dashboard_id={dash.id}&'
-                    ''.format(**locals()))
+                    'dashboard_id={dash.id}&'.format(**locals()))
 
         # Hack to log the dashboard_id properly, even when getting a slug
         @log_this
         def dashboard(**kwargs):  # noqa
             pass
         dashboard(dashboard_id=dash.id)
+
         dash_edit_perm = check_ownership(dash, raise_if_false=False)
         dash_save_perm = \
             dash_edit_perm and self.can_access('can_save_dash', 'Superset')
-        standalone = request.args.get("standalone") == "true"
-        context = dict(
-            user_id=g.user.get_id(),
-            dash_save_perm=dash_save_perm,
-            dash_edit_perm=dash_edit_perm,
-            standalone_mode=standalone,
-        )
+
+        dashboard_data = dash.data
+        dashboard_data.update({
+            'standalone_mode': request.args.get("standalone") == "true",
+        })
+
+        bootstrap_data = {
+            'user_id': g.user.get_id(),
+            'dash_save_perm': dash_save_perm,
+            'dash_edit_perm': dash_edit_perm,
+            'dash_edit_perm': check_ownership(dash, raise_if_false=False),
+            'dashboard_data': dash.data,
+            'datasources': {ds.uid: ds.data for ds in datasources},
+        }
+
         return self.render_template(
             "superset/dashboard.html",
-            dashboard=dash,
-            context=json.dumps(context),
-            standalone_mode=standalone,
+            dashboard_title=dash.dashboard_title,
+            bootstrap_data=json.dumps(bootstrap_data),
         )
 
     @has_access
diff --git a/tests/core_tests.py b/tests/core_tests.py
index d18f2d93900c5..f9e6c8a964c4d 100644
--- a/tests/core_tests.py
+++ b/tests/core_tests.py
@@ -396,7 +396,7 @@ def test_copy_dash(self, username='admin'):
         self.client.post(url, data=dict(data=json.dumps(data)))
         dash = db.session.query(models.Dashboard).filter_by(
             id=dash_id).first()
-        orig_json_data = json.loads(dash.json_data)
+        orig_json_data = dash.data
 
         # Verify that copy matches original
         url = '/superset/copy_dash/{}/'.format(dash_id)