django template access to list item by forloop.counter

I want to loop over my model's query set in the Django template. I can do it simply using Django for loop but I can not do it for steps more than 1,Here is my code

 {% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



   #Here I can access Maps with index of 1,3,5 and ..

   #How can I access map with index 2,4,6 here at the same time sth like Map[forloop.counter+1]



 {% endif %}





 {% endfor %}

In fact I want a way to acces Map[forloop.counter+1] in my template but I have no idea how to do that

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

use {% else %} ?

– Alex
Nov 13 '18 at 18:18

No I can not use else, as I want step my for +2

– Majid Hojati
Nov 13 '18 at 18:19

add a comment |

I want to loop over my model's query set in the Django template. I can do it simply using Django for loop but I can not do it for steps more than 1,Here is my code

 {% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



   #Here I can access Maps with index of 1,3,5 and ..

   #How can I access map with index 2,4,6 here at the same time sth like Map[forloop.counter+1]



 {% endif %}





 {% endfor %}

In fact I want a way to acces Map[forloop.counter+1] in my template but I have no idea how to do that

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

use {% else %} ?

– Alex
Nov 13 '18 at 18:18

No I can not use else, as I want step my for +2

– Majid Hojati
Nov 13 '18 at 18:19

add a comment |

I want to loop over my model's query set in the Django template. I can do it simply using Django for loop but I can not do it for steps more than 1,Here is my code

 {% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



   #Here I can access Maps with index of 1,3,5 and ..

   #How can I access map with index 2,4,6 here at the same time sth like Map[forloop.counter+1]



 {% endif %}





 {% endfor %}

In fact I want a way to acces Map[forloop.counter+1] in my template but I have no idea how to do that

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

I want to loop over my model's query set in the Django template. I can do it simply using Django for loop but I can not do it for steps more than 1,Here is my code

 {% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



   #Here I can access Maps with index of 1,3,5 and ..

   #How can I access map with index 2,4,6 here at the same time sth like Map[forloop.counter+1]



 {% endif %}





 {% endfor %}

In fact I want a way to acces Map[forloop.counter+1] in my template but I have no idea how to do that

django django-templates

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

asked Nov 13 '18 at 18:04

Majid Hojati

63131224

use {% else %} ?

– Alex
Nov 13 '18 at 18:18

No I can not use else, as I want step my for +2

– Majid Hojati
Nov 13 '18 at 18:19

add a comment |

use {% else %} ?

– Alex
Nov 13 '18 at 18:18

No I can not use else, as I want step my for +2

– Majid Hojati
Nov 13 '18 at 18:19

use {% else %} ?

– Alex
Nov 13 '18 at 18:18

No I can not use else, as I want step my for +2

– Majid Hojati
Nov 13 '18 at 18:19

add a comment |

3 Answers
3

active

oldest

votes

Create a custom template filter as defined here https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#registering-custom-filters

from django import template

register = template.Library()

@register.filter

def list_item(lst, i):

    try:

        return lst[i]

    except:

        return None

Inside your template, use it like:

{% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



 {% with maps|list_item:forloop.counter+1 as another_map %}



 {{another_map.id}}



 {% endif %}



{% endfor %}

Where to write template tags?
Create a directory templatetags at the same level as models.py, views.py. Then add __init__.py and a file maps_tags.py. Write the custom tag definition in maps_tags.py. In your template, load the template tags by writing {% load maps_tags %} at the top. More documentation at https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#code-layout

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

add a comment |

You can combine more than one forloop and implement your custom logic for this, but not access in the same time. Below all forloops from Django 2.1 documentation.

forloop.counter     The current iteration of the loop (1-indexed)

forloop.counter0    The current iteration of the loop (0-indexed)

forloop.revcounter  The number of iterations from the end of the loop (1-indexed)

forloop.revcounter0     The number of iterations from the end of the loop (0-indexed)

forloop.first   True if this is the first time through the loop

forloop.last    True if this is the last time through the loop

forloop.parentloop  For nested loops, this is the loop surrounding the current one

tell me, What is the problem that you want solve? Maybe you can create a custom tamplate tag or template filter.

answered Nov 13 '18 at 18:43

silvio leite

613

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

add a comment |

In Django you can use {{ forloop.counter }} index starts at 1 or {{ forloop.counter0 }} index starts at 0.

Maybe you can use this to acces the index+1

I hope this helped. You can read more here

answered Nov 13 '18 at 18:45

Sigurd

214

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

Create a custom template filter as defined here https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#registering-custom-filters

from django import template

register = template.Library()

@register.filter

def list_item(lst, i):

    try:

        return lst[i]

    except:

        return None

Inside your template, use it like:

{% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



 {% with maps|list_item:forloop.counter+1 as another_map %}



 {{another_map.id}}



 {% endif %}



{% endfor %}

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

add a comment |

Create a custom template filter as defined here https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#registering-custom-filters

from django import template

register = template.Library()

@register.filter

def list_item(lst, i):

    try:

        return lst[i]

    except:

        return None

Inside your template, use it like:

{% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



 {% with maps|list_item:forloop.counter+1 as another_map %}



 {{another_map.id}}



 {% endif %}



{% endfor %}

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

add a comment |

Create a custom template filter as defined here https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#registering-custom-filters

from django import template

register = template.Library()

@register.filter

def list_item(lst, i):

    try:

        return lst[i]

    except:

        return None

Inside your template, use it like:

{% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



 {% with maps|list_item:forloop.counter+1 as another_map %}



 {{another_map.id}}



 {% endif %}



{% endfor %}

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

Create a custom template filter as defined here https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#registering-custom-filters

from django import template

register = template.Library()

@register.filter

def list_item(lst, i):

    try:

        return lst[i]

    except:

        return None

Inside your template, use it like:

{% for map in maps %}



 {% if  forloop.counter|divisibleby:2 %}



 {% with maps|list_item:forloop.counter+1 as another_map %}



 {{another_map.id}}



 {% endif %}



{% endfor %}

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

edited Nov 13 '18 at 20:12

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

answered Nov 13 '18 at 18:37

jerrymouse

8,590104967

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

add a comment |

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

Hi, thanks very much, How can I manage to get info from map?for example {{ maps|list_item:forloop.counter+1 }}.id is it possible?

– Majid Hojati
Nov 13 '18 at 19:01

@MajidHojati You'll have to use with. Updated my answer.

– jerrymouse
Nov 13 '18 at 20:12

wow,thanks very much,it worked

– Majid Hojati
Nov 13 '18 at 20:13

is forloop.counter+1 correct?

– Majid Hojati
Nov 13 '18 at 20:24

add a comment |

You can combine more than one forloop and implement your custom logic for this, but not access in the same time. Below all forloops from Django 2.1 documentation.

forloop.counter     The current iteration of the loop (1-indexed)

forloop.counter0    The current iteration of the loop (0-indexed)

forloop.revcounter  The number of iterations from the end of the loop (1-indexed)

forloop.revcounter0     The number of iterations from the end of the loop (0-indexed)

forloop.first   True if this is the first time through the loop

forloop.last    True if this is the last time through the loop

forloop.parentloop  For nested loops, this is the loop surrounding the current one

tell me, What is the problem that you want solve? Maybe you can create a custom tamplate tag or template filter.

answered Nov 13 '18 at 18:43

silvio leite

613

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

add a comment |

You can combine more than one forloop and implement your custom logic for this, but not access in the same time. Below all forloops from Django 2.1 documentation.

forloop.counter     The current iteration of the loop (1-indexed)

forloop.counter0    The current iteration of the loop (0-indexed)

forloop.revcounter  The number of iterations from the end of the loop (1-indexed)

forloop.revcounter0     The number of iterations from the end of the loop (0-indexed)

forloop.first   True if this is the first time through the loop

forloop.last    True if this is the last time through the loop

forloop.parentloop  For nested loops, this is the loop surrounding the current one

tell me, What is the problem that you want solve? Maybe you can create a custom tamplate tag or template filter.

answered Nov 13 '18 at 18:43

silvio leite

613

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

add a comment |

You can combine more than one forloop and implement your custom logic for this, but not access in the same time. Below all forloops from Django 2.1 documentation.

forloop.counter     The current iteration of the loop (1-indexed)

forloop.counter0    The current iteration of the loop (0-indexed)

forloop.revcounter  The number of iterations from the end of the loop (1-indexed)

forloop.revcounter0     The number of iterations from the end of the loop (0-indexed)

forloop.first   True if this is the first time through the loop

forloop.last    True if this is the last time through the loop

forloop.parentloop  For nested loops, this is the loop surrounding the current one

tell me, What is the problem that you want solve? Maybe you can create a custom tamplate tag or template filter.

answered Nov 13 '18 at 18:43

silvio leite

613

You can combine more than one forloop and implement your custom logic for this, but not access in the same time. Below all forloops from Django 2.1 documentation.

forloop.counter     The current iteration of the loop (1-indexed)

forloop.counter0    The current iteration of the loop (0-indexed)

forloop.revcounter  The number of iterations from the end of the loop (1-indexed)

forloop.revcounter0     The number of iterations from the end of the loop (0-indexed)

forloop.first   True if this is the first time through the loop

forloop.last    True if this is the last time through the loop

forloop.parentloop  For nested loops, this is the loop surrounding the current one

tell me, What is the problem that you want solve? Maybe you can create a custom tamplate tag or template filter.

answered Nov 13 '18 at 18:43

silvio leite

613

answered Nov 13 '18 at 18:43

silvio leite

613

answered Nov 13 '18 at 18:43

silvio leite

613

answered Nov 13 '18 at 18:43

silvio leite

613

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

add a comment |

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

But How can I acces maps[forloop.counter ]? my problem is accessing the maps by forloop.counter index

– Majid Hojati
Nov 13 '18 at 19:15

add a comment |

In Django you can use {{ forloop.counter }} index starts at 1 or {{ forloop.counter0 }} index starts at 0.

Maybe you can use this to acces the index+1

I hope this helped. You can read more here

answered Nov 13 '18 at 18:45

Sigurd

214

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

add a comment |

In Django you can use {{ forloop.counter }} index starts at 1 or {{ forloop.counter0 }} index starts at 0.

Maybe you can use this to acces the index+1

I hope this helped. You can read more here

answered Nov 13 '18 at 18:45

Sigurd

214

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

add a comment |

In Django you can use {{ forloop.counter }} index starts at 1 or {{ forloop.counter0 }} index starts at 0.

Maybe you can use this to acces the index+1

I hope this helped. You can read more here

answered Nov 13 '18 at 18:45

Sigurd

214

In Django you can use {{ forloop.counter }} index starts at 1 or {{ forloop.counter0 }} index starts at 0.

Maybe you can use this to acces the index+1

I hope this helped. You can read more here

answered Nov 13 '18 at 18:45

Sigurd

214

answered Nov 13 '18 at 18:45

Sigurd

214

answered Nov 13 '18 at 18:45

Sigurd

214

answered Nov 13 '18 at 18:45

Sigurd

214

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

add a comment |

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

But How can I acces maps[forloop.counter ]?

– Majid Hojati
Nov 13 '18 at 19:14

add a comment |

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