Re: how to find activities dues for today and tommorow

Thank you Julio :)

On Thu, Jul 26, 2018 at 12:53 AM, Julio Biason <julio.biason@azion.com> wrote:

Hi Deepak,

You could set up another model to track when something should be done to the tree; something like this:

class Tree(models.Model):

    ...

    planted_date = models.DateField()

class Reminder(models.Model):

    tree = models.ForeignKey(tree)

    when = models.DateField()

    what = models.CharField()

    done = models.BooleanField()

So, when you create a tree, you get the current date and create the entries on the Reminder model. Somewhere, you can get the list of reminders with something like

to_do = Reminder.object.filter(Q(tree=tree_in_view) & Q(when_lte=datetime.datetime.today()) & Q(done_ne=True))

And throw this in the view -- it basically says "give me all the reminders for the tree I'm looking at in this point (say, you have a page for each tree, so this is the tree id), in which the reminder is from a date equal or before today (in case you don't want to show reminders for dates in the future) and which are not done (which you should also provide a way so the user can mark the reminder as "done" and not be bothered with it again).

You can find more information about the Q here: https://docs.djangoproject.com/en/2.0/topics/db/queries/#complex-lookups-with-q-objects

On Wed, Jul 25, 2018 at 3:07 PM, deepak madan <deepakms.real@gmail.com> wrote:

suppose a model for the tree which is planted on some days. The second model has activities dues to be done after some regular interval like 1) giving fertilizer A after 5 days 2) giving fertilizer B after 15 days.

My question is when this 5th or 15th days arrives, to design a reminder page to show activities dues today and tomorrow.

Please help

Whats logic in views.py

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Julio Biason, Sofware Engineer

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