brotherton-erpnext/erpnext/www/lms/content.py

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from __future__ import unicode_literals
import erpnext.education.utils as utils
import frappe
no_cache = 1
def get_context(context):
# Load Query Parameters
try:
program = frappe.form_dict['program']
content = frappe.form_dict['content']
content_type = frappe.form_dict['type']
course = frappe.form_dict['course']
topic = frappe.form_dict['topic']
except KeyError:
frappe.local.flags.redirect_location = '/lms'
raise frappe.Redirect
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# Check if user has access to the content
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has_program_access = utils.allowed_program_access(program)
has_content_access = allowed_content_access(program, content, content_type)
if frappe.session.user == "Guest" or not has_program_access or not has_content_access:
frappe.local.flags.redirect_location = '/lms'
raise frappe.Redirect
# Set context for content to be displayer
context.content = frappe.get_doc(content_type, content)
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context.content_type = content_type
context.program = program
context.course = course
context.topic = topic
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topic = frappe.get_doc("Topic", topic)
content_list = [{'content_type':item.doctype, 'content':item.name} for item in topic.get_contents()]
# Set context for progress numbers
context.position = content_list.index({'content': content, 'content_type': content_type})
context.length = len(content_list)
# Set context for navigation
context.previous = get_previous_content(content_list, context.position)
context.next = get_next_content(content_list, context.position)
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def get_next_content(content_list, current_index):
try:
return content_list[current_index + 1]
except IndexError:
return None
def get_previous_content(content_list, current_index):
if current_index == 0:
return None
else:
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return content_list[current_index - 1]
def allowed_content_access(program, content, content_type):
contents_of_program = frappe.db.sql("""select `tabtopic content`.content, `tabtopic content`.content_type
from `tabcourse topic`,
`tabprogram course`,
`tabtopic content`
where `tabcourse topic`.parent = `tabprogram course`.course
and `tabtopic content`.parent = `tabcourse topic`.topic
and `tabprogram course`.parent = '{0}'""".format(program))
return (content, content_type) in contents_of_program