Iterating through map in template

Question

I am trying to display a list gym classes  Yoga  Pilates etc   For each class type there are several classes  so I want to group all the Yoga classes  and all the Pilates classes and so on   I made this function to take a slice and make a map of it  func groupClasses classes   entities Class  map string   entities Class       classMap    make map string   entities Class      for    class    range classes           classMap class ClassType Name    append classMap class ClassType Name   class            return classMap     The problem is now how can I iterate through it  according to http   golang org pkg text template   you need to access it in  Key format  I don t know the keys  unless I also passed a slice of keys into the template   How do I unpack this map in my view   All I have currently is              which displays something like   map Pilates   102 PILATES   mobifit video ocen mpg 169 40 2014-05-03 23 12 12  0000 UTC 2014-05-03 23 12 12  0000 UTC 1899-12-30 00 00 00  0000 UTC  PILATES Pilates 1 2014-01-22 21 46 16  0000 UTC   1 leebrooks0 gmail com password SUPERADMIN Lee Brooks  Male true   1990-07-11 00 00 00  0000 UTC true   1 85 true   88 true  2014-01-22 21 46 16  0000 UTC  0001-01-01 00 00 00  0000 UTC false   0001-01-01 00 00 00  0000 UTC false   0001-01-01 00 00 00  0000 UTC false     1 Mat 2014-01-22 21 46 16  0000 UTC     70 PILATES   mobifit video ocen mpg 119 66 2014-03-31 15 12 12  0000 UTC 2014-03-31 15 12 12  0000 UTC 1899-12-30 00 00 00  0000 UTC

User · Accepted Answer

Check the Variables section in the Go template docs  A range may declare two variables  separated by a comma  The following should work      range  key   value             lt li gt  lt strong gt     key    lt  strong gt       value    lt  li gt     end

User · Answer

As Herman pointed out  you can get the index and element from each iteration     range  index   element          index     range  element     Value     end     end     Working example   package main  import        html template       os     type EntetiesClass struct       Name string     Value int32       In the template  we use rangeStruct to turn our struct values    into a slice we can iterate over var htmlTemplate      range  index   element          index     range  element     Value     end     end     func main         data    map string   EntetiesClass           Yoga      Yoga   15     Yoga   51             Pilates      Pilates   3     Pilates   6     Pilates   9               t    template New  t       t  err    t Parse htmlTemplate      if err    nil           panic err             err   t Execute os Stdout  data      if err    nil           panic err             Output   Pilates 3 6 9  Yoga 15 51   Playground  http   play golang org p 4ISxcFKG7v

[go] Iterating through map in template

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