taskapp/utilities/notification.py
author nishanth
Sun, 28 Feb 2010 13:27:43 +0530
changeset 142 bd65e2c9a7b4
parent 141 2489392ffb56
child 144 581ad20b8c39
permissions -rw-r--r--
fixed the a_or_an bug .
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from datetime import datetime
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from django.contrib.auth.models import User
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from pytask.taskapp.models import Notification, RIGHTS_CHOICES
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def create_notification(role, sent_to, sent_from=None, reply=None, task=None, remarks=None, requested_by=None, receiving_user=None, pynts=None):
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    """
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    creates a notification based on the passed arguments.
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        role: role of the notification - look at choices in models 
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        sent_to: a user to which the notification is to be sent
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        sent_from : a user from which the message has originated
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            A user who approves/rejects in case of request
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            A mentor who closes/complets the task
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        reply: A boolean
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        task: a task if applicable
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        requested_by: a user makes the request
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            A mentor who assigns credits in case of pynts
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            A mentor who requests to act as a mentor
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        remarks: any remarks for rejecting
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        receiving_user: user receiving pynts
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        pynts: the obvious
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    """
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    notification = Notification(sent_date = datetime.now())
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    notification.role = role
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    notification.sent_to = sent_to
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    notification.save()
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    if role == "PY":
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        notification.sent_from = sent_from
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        notification.task = task
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        notification.pynts = pynts
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        task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
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        credits_url = '<a href="/task/assigncredits/tid=%s">%s</a>'%(task.id, "click here")
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        mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
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        admin_url = '<a href="/user/view/uid=%s">%s</a>'%(sent_from.id, sent_from.username)
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        user_url = '<a href="/user/view/uid=%s">%s</a>'%(receiving_user.id, receiving_user.username)
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        if reply:
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            notification.sub = "Approved request for assign of credits for %s"%task.title[:20]
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            notification.message  = """ Request made by %s to assign %s pynts to %s for the task %s has been approved by %s<br />
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                                    %s if you want the view/assign pynts page of the task.<br />"""%(mentor_url, pynts, user_url, task_url, admin_url, credits_url)
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        else:
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            notification.sub = "Rejected request for assign of credits for %s"%task.title[:20]
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            notification.message = """ Request made by %s to assign %s pynts to %s for the task %s has been rejected by %s.<br /> """%(mentor_url, pynts, user_url, task_url, admin_url)
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            if remarks:
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                notification.remarks = remarks
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                notification.message += "Reason: %s<br />"%remarks
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            notification.message += "<br />"
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    elif role == "MT":
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        task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
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        requested_mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
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        new_mentor = sent_from
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        new_mentor_url = '<a href="/user/view/uid=%s">%s</a>'%(new_mentor.id, new_mentor.username)
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        if reply:
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            notification.sub = "New mentor for the task %s"%task.title[:20]
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            notification.message = "%s has accepted the request made by %s, asking him act as a mentor for the task %s<br />"%(new_mentor_url, requested_mentor_url, task_url)
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            notification.message += "He can be contacted on %s"%new_mentor.email
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        else:
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            notification.sub = "Rejected request to act as a mentor for %s"%task.title[:20]
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            notification.message = "%s has rejected your request asking him to act as a mentor for %s.<br />"%(new_mentor_url, task_url)
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            if remarks:
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                notification.message += "Remarks: %s<br />"%remarks
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    elif role in ["DV", "MG", "AD"]:
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        accepting_user = sent_from
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        user_url = '<a href="/user/view/uid=%s">%s</a>'%(accepting_user.id, accepting_user.username) ## i mean the user who has accepted it
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        requested_by_url = '<a href="/user/view/uid=%s">%s</a>'%(requested_by.id, requested_by.username)
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        role_rights = dict(RIGHTS_CHOICES)[role]
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        role_learn_url = "/about/%s"%role_rights.lower()
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        a_or_an = "an" if role_rights == "AD" else "a"
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        if reply:
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            notification.sub = "New %s for the site"%role_rights
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            notification.message = "%s has accepted request made by %s asking him to act as %s %s for the website.<br />"%(user_url, requested_by_url, a_or_an, role_rights)
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        else:
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            notification.sub = "Rejected your request to act as %s"%role_rights
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            notification.message = "%s has rejected your request asking him to act as a %s.<br />"%(new_mentor_url, task_url)
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            if remarks:
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                notification.message += "Remarks: %s<br />"%remarks
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    elif role == "NT":
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        new_mentor = sent_to
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        mentor_learn_url = '<sup><a href="/about/mentor">learn more</a></sup>'
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        task_url= '<a href="/task/view/tid=%s">%s</a>'%(task.id, task.title)
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        notification.sub = "You are mentoring the task %s"%task.title[:20]
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        notification.message = "You have accepted to act as a mentor%s for the task %s.<br />"%(mentor_learn_url, task_url)
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        notification.message += " Here is a list of other mentors and their email addresses.<br /> <ul>"
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        for a_mentor in task.mentors.exclude(id=new_mentor.id):
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            notification.message += "<li> %s - %s </li>"%(a_mentor.username, a_mentor.email)
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        notification.message += "</ul> List of users working on the task.<br />"
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        working_users = task.assigned_users.all()
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        if working_users:
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            notification_message += "<ul>"
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            for a_user in working_users:
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                notification.message += "<li> %s - %s </li>"%(a_user.username, a_user.email)
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            notification.message += "</ul><br />"
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        notification.message += "Happy Mentoring."
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    notification.save()
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def mark_notification_read(notification_id):
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    """
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    makes a notification identified by the notification_id read.
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    arguments:
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        notification_id - a number denoting the id of the Notification object
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    """
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    try:
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        notification = Notification.objects.get(id = notification_id)
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    except Notification.DoesNotExist:
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        return False
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    notification.is_read = True
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    notification.save()
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    return True
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def delete_notification(notification_id):
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    """
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    deletes a notification identified by the notification_id.
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    arguments:
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        notification_id - a number denoting the id of the Notification object
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    """
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    try:
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        notification = Notification.objects.get(id = notification_id)
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    except Notification.DoesNotExist:
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        return False
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    notification.is_deleted = True
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    notification.save()
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    return True
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def get_notification(nid, user):
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    """ if notification exists, and belongs to the current user, return it.
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    else return None.
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    """
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    user_notifications = user.notification_sent_to.filter(is_deleted=False).order_by('sent_date')
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   147
    current_notifications = user_notifications.filter(id=nid)
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   148
    if user_notifications:
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   149
        current_notification = current_notifications[0]
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   150
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   151
        try:
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   152
            newer_notification = current_notification.get_next_by_sent_date(sent_to=user, is_deleted=False)
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   153
            newest_notification = user_notifications.reverse()[0]
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   154
            if newest_notification == newer_notification:
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   155
                newest_notification = None
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   156
        except Notification.DoesNotExist:
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   157
            newest_notification, newer_notification = None, None
123
a6b4234388c8 now notification depends on id and not pos.
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diff changeset
   158
133
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   159
        try:
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   160
            older_notification = current_notification.get_previous_by_sent_date(sent_to=user, is_deleted=False)
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   161
            oldest_notification = user_notifications[0]
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   162
            if oldest_notification == older_notification:
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   163
                oldest_notification = None
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   164
        except:
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   165
            oldest_notification, older_notification = None, None
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   166
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   167
        return newest_notification, newer_notification, current_notification, older_notification, oldest_notification
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diff changeset
   168
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diff changeset
   169
    else:
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diff changeset
   170
        return None, None, None, None, None