CODEWITHSUNDEEP
pythonarraysgoogle-app-enginetemplates
Sayanee
Sayanee

Reputation: 5167

Google App Engine passing template variables into view with arrays

My main.py has the following variables:

'booking_times':
 {
   'Today': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00'],
   'Tue': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00'],
   'Wed': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00']
 }

In my view I would like to display them in table:

-----------------------
Today  | Tue   | Wed   | // line 1
9:00   | 9:00  | 9:00  | // line 2
12:00  | 12:00 | 12:00 |

I have 2 questions:

(1) As an example, how would I loop through for line 2 which are each a <td> html tag?

(2) My line 1 is as follows, but it outputs as Tue | Today | Wed instead of Today | Tue | Wed |:

{% for day in booking_times %}
<td>{{day}}</td>
{% endfor %}

Thanks!

Upvotes: 1

Views: 255

Answers (1)

RocketDonkey
RocketDonkey

Reputation: 37249

Assuming you are using Python, here is one thing you could try. Note that this starts with a slightly different setup of your booking_times variable, but hopefully the concept makes sense. The general idea is that we first create a sort order that we will use to sort our values. We then use zip to create a new list-of-lists, which will begin with the days and then follow with the hours in each subsequent list.

booking_times = {
   'Today': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00'],
   'Tue': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00'],
   'Wed': ['9:00', '12:00', '14:00', '15:00', '19:00', '20:00']
 }

# Create a new booking_times variable that is a list-of-list,
# leading with the 'days' and followed by one list for each time
sorted_keys = ['Today', 'Tue', 'Wed']
booking_times = [sorted_keys] + zip(*(booking_times[s] for s in sorted_keys))

Here is what booking_times looks like at this point in time when iterated over with a simple for row in booking_times: print row:

['Today', 'Tue', 'Wed']
('9:00', '9:00', '9:00')
('12:00', '12:00', '12:00')
('14:00', '14:00', '14:00')
('15:00', '15:00', '15:00')
('19:00', '19:00', '19:00')
('20:00', '20:00', '20:00')

You can then pass that value into your template and iterate over it in essentially the same way you are above:

{% for day in booking_times %}
   <tr>
   {% for item in day %}
       <td>{{ item }}</td> 
   {% endfor %}
   </tr>
{% endfor %}

I can't test the templating right now, but this outputs the following when modified to work with simple print statements:

Today   Tue Wed
9:00    9:00    9:00
12:00   12:00   12:00
14:00   14:00   14:00
15:00   15:00   15:00
19:00   19:00   19:00
20:00   20:00   20:00

This may deviating a bit far from your current setup, so happy to adjust if necessary.

Upvotes: 2

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