Create program detail fragment for mobile app

To extract the program detail information edX mobile team has to
parse all the un-necassary details which takes time that ultimately
slows down app.To avoid it,a detail fragment is created that will
be used in the mobile app as well as on the web.

LEARNER-2981

lms/djangoapps/learner_dashboard/programs.py

@@ -4,14 +4,21 @@ Fragments for rendering programs.
 from django.http import Http404
 from django.template.loader import render_to_string
 from django.utils.translation import get_language_bidi
+from django.core.urlresolvers import reverse
+
 from web_fragments.fragment import Fragment
 
+from lms.djangoapps.commerce.utils import EcommerceService
+from lms.djangoapps.learner_dashboard.utils import FAKE_COURSE_KEY, strip_course_id
 from openedx.core.djangoapps.plugin_api.views import EdxFragmentView
 from openedx.core.djangoapps.programs.models import ProgramsApiConfig
 from openedx.core.djangoapps.programs.utils import (
+    ProgramDataExtender,
     ProgramProgressMeter,
+    get_certificates,
     get_program_marketing_url
 )
+from openedx.core.djangoapps.user_api.preferences.api import get_user_preferences
 
 
 class ProgramsFragmentView(EdxFragmentView):
@@ -52,3 +59,63 @@ class ProgramsFragmentView(EdxFragmentView):
             return self.get_css_dependencies('style-learner-dashboard-rtl')
         else:
             return self.get_css_dependencies('style-learner-dashboard')
+
+
+class ProgramDetailsFragmentView(EdxFragmentView):
+    """
+    Render the program details fragment.
+    """
+    def render_to_fragment(self, request, program_uuid, **kwargs):
+        """View details about a specific program."""
+        programs_config = kwargs.get('programs_config') or ProgramsApiConfig.current()
+        if not programs_config.enabled or not request.user.is_authenticated():
+            raise Http404
+
+        meter = ProgramProgressMeter(request.site, request.user, uuid=program_uuid)
+        program_data = meter.programs[0]
+
+        if not program_data:
+            raise Http404
+
+        program_data = ProgramDataExtender(program_data, request.user).extend()
+        course_data = meter.progress(programs=[program_data], count_only=False)[0]
+        certificate_data = get_certificates(request.user, program_data)
+
+        program_data.pop('courses')
+        skus = program_data.get('skus')
+        ecommerce_service = EcommerceService()
+
+        urls = {
+            'program_listing_url': reverse('program_listing_view'),
+            'track_selection_url': strip_course_id(
+                reverse('course_modes_choose', kwargs={'course_id': FAKE_COURSE_KEY})
+            ),
+            'commerce_api_url': reverse('commerce_api:v0:baskets:create'),
+            'buy_button_url': ecommerce_service.get_checkout_page_url(*skus)
+        }
+
+        context = {
+            'urls': urls,
+            'user_preferences': get_user_preferences(request.user),
+            'program_data': program_data,
+            'course_data': course_data,
+            'certificate_data': certificate_data
+        }
+
+        html = render_to_string('learner_dashboard/program_details_fragment.html', context)
+        program_details_fragment = Fragment(html)
+        self.add_fragment_resource_urls(program_details_fragment)
+        return program_details_fragment
+
+    def css_dependencies(self):
+        """
+        Returns list of CSS files that this view depends on.
+
+        The helper function that it uses to obtain the list of CSS files
+        works in conjunction with the Django pipeline to ensure that in development mode
+        the files are loaded individually, but in production just the single bundle is loaded.
+        """
+        if get_language_bidi():
+            return self.get_css_dependencies('style-learner-dashboard-rtl')
+        else:
+            return self.get_css_dependencies('style-learner-dashboard')

lms/djangoapps/learner_dashboard/urls.py

@@ -7,4 +7,6 @@ urlpatterns = [
     url(r'^programs/$', views.program_listing, name='program_listing_view'),
     url(r'^programs/(?P<program_uuid>[0-9a-f-]+)/$', views.program_details, name='program_details_view'),
     url(r'^programs_fragment/$', programs.ProgramsFragmentView.as_view(), name='program_listing_fragment_view'),
+    url(r'^programs/(?P<program_uuid>[0-9a-f-]+)/details_fragment/$', programs.ProgramDetailsFragmentView.as_view(),
+        name='program_details_fragment_view'),
 ]

lms/djangoapps/learner_dashboard/views.py

@@ -1,22 +1,11 @@
 """Learner dashboard views"""
 from django.contrib.auth.decorators import login_required
-from django.core.urlresolvers import reverse
-from django.http import Http404
 from django.views.decorators.http import require_GET
 
 from edxmako.shortcuts import render_to_response
-from lms.djangoapps.commerce.utils import EcommerceService
 
-from lms.djangoapps.learner_dashboard.programs import ProgramsFragmentView
-from lms.djangoapps.learner_dashboard.utils import FAKE_COURSE_KEY, strip_course_id
+from lms.djangoapps.learner_dashboard.programs import ProgramsFragmentView, ProgramDetailsFragmentView
 from openedx.core.djangoapps.programs.models import ProgramsApiConfig
-from openedx.core.djangoapps.programs.utils import (
-    ProgramDataExtender,
-    ProgramProgressMeter,
-    get_certificates,
-    get_program_marketing_url
-)
-from openedx.core.djangoapps.user_api.preferences.api import get_user_preferences
 
 
 @login_required
@@ -43,43 +32,17 @@ def program_listing(request):
 def program_details(request, program_uuid):
     """View details about a specific program."""
     programs_config = ProgramsApiConfig.current()
-    if not programs_config.enabled:
-        raise Http404
-
-    meter = ProgramProgressMeter(request.site, request.user, uuid=program_uuid)
-    program_data = meter.programs[0]
-
-    if not program_data:
-        raise Http404
-
-    program_data = ProgramDataExtender(program_data, request.user).extend()
-    course_data = meter.progress(programs=[program_data], count_only=False)[0]
-    certificate_data = get_certificates(request.user, program_data)
-
-    program_data.pop('courses')
-    skus = program_data.get('skus')
-    ecommerce_service = EcommerceService()
-
-    urls = {
-        'program_listing_url': reverse('program_listing_view'),
-        'track_selection_url': strip_course_id(
-            reverse('course_modes_choose', kwargs={'course_id': FAKE_COURSE_KEY})
-        ),
-        'commerce_api_url': reverse('commerce_api:v0:baskets:create'),
-        'buy_button_url': ecommerce_service.get_checkout_page_url(*skus)
-    }
+    program_fragment = ProgramDetailsFragmentView().render_to_fragment(
+        request, program_uuid, programs_config=programs_config
+    )
 
     context = {
-        'urls': urls,
+        'program_fragment': program_fragment,
         'show_program_listing': programs_config.enabled,
         'show_dashboard_tabs': True,
         'nav_hidden': True,
         'disable_courseware_js': True,
         'uses_pattern_library': True,
-        'user_preferences': get_user_preferences(request.user),
-        'program_data': program_data,
-        'course_data': course_data,
-        'certificate_data': certificate_data
     }
 
     return render_to_response('learner_dashboard/program_details.html', context)

lms/templates/learner_dashboard/program_details.html

@@ -3,29 +3,14 @@
 
 <%page expression_filter="h"/>
 <%inherit file="../main.html" />
-<%namespace name='static' file='../static_content.html'/>
 <%!
 from django.utils.translation import ugettext as _
-from openedx.core.djangolib.js_utils import (
-    dump_js_escaped_json, js_escaped_string
-)
+from openedx.core.djangolib.markup import HTML
 %>
 
-<%block name="js_extra">
-<%static:require_module module_name="js/learner_dashboard/program_details_factory" class_name="ProgramDetailsFactory">
-ProgramDetailsFactory({
-    programData: ${program_data | n, dump_js_escaped_json},
-    courseData: ${course_data | n, dump_js_escaped_json},
-    certificateData: ${certificate_data | n, dump_js_escaped_json},
-    urls: ${urls | n, dump_js_escaped_json},
-    userPreferences: ${user_preferences | n, dump_js_escaped_json},
-});
-</%static:require_module>
-</%block>
-
 <%block name="pagetitle">${_("Program Details")}</%block>
 <%block name="bodyclass">program-details</%block>
 
 <main id="main" aria-label="Content" tabindex="-1">
-    <div class="js-program-details-wrapper program-details-wrapper"></div>
+    ${HTML(program_fragment.body_html())}
 </main>

lms/templates/learner_dashboard/program_details_fragment.html

@@ -0,0 +1,23 @@
+## mako
+
+<%page expression_filter="h"/>
+<%namespace name='static' file='../static_content.html'/>
+<%!
+from openedx.core.djangolib.js_utils import (
+    dump_js_escaped_json, js_escaped_string
+)
+%>
+
+<%block name="js_extra">
+<%static:require_module module_name="js/learner_dashboard/program_details_factory" class_name="ProgramDetailsFactory">
+ProgramDetailsFactory({
+    programData: ${program_data | n, dump_js_escaped_json},
+    courseData: ${course_data | n, dump_js_escaped_json},
+    certificateData: ${certificate_data | n, dump_js_escaped_json},
+    urls: ${urls | n, dump_js_escaped_json},
+    userPreferences: ${user_preferences | n, dump_js_escaped_json},
+});
+</%static:require_module>
+</%block>
+
+<div class="js-program-details-wrapper program-details-wrapper"></div>