Json.Decode object with more than 9 property

[Costantino Giuliodori]

Hello,

How to decode a Json object whit more than 9 properties of different type?
I've an api that get a record of the type:
Json.maybe lias BaseData =                                                          
   { code:           String              
   , acronym:        String             
   , state:          OptGrp.Data       
   , call:           String             
   , title:          String             
   , subject:        OptGrp.Data        
   , theme:          String             
   , euProgram:      OptGrp.Data        
   , ou:             OptGrp.Data        
   , total:          Float             
   , amountRM:       Float       
   , percEUFounding: Float             
   , percState:      Float             
   , percReg:        Float       
   , amountSVIM:     Float             
   , startInt:      Int                
   , endInt:        Int                
   , website:        String             
   , notes:          String             
 }                                                                                                                                                                                                                               

I must use `map` to jump between intermediate decoders until a Decoder BaseData ?

[Max Goldstein]

See No Red Ink's answer to this problem. Note that it requires a third-party library, which you can get with

elm package install circuithub/elm-json-extra

[Costantino Giuliodori]

thanks Max, the link was really useful.

2016-02-12 15:31 GMT+01:00 Max Goldstein <maxgol...@gmail.com>:

See No Red Ink's answer to this problem. Note that it requires a third-party library, which you can get with

elm package install circuithub/elm-json-extra

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Costantino Giuliodori

[Vitor Capela]

Shameless plug, but I've written about this in the past. It might be useful, even with the elm-json-extra: http://www.troikatech.com/blog/2015/08/17/decoding-larger-json-objects-in-elm/

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[Costantino Giuliodori]

Your post cleared me on the magic behind (|:) and that my initial hypothesis to do jumps between intermediate decoders
was strange only for my head not yet accustomed to functional languages and the applicative functor things.

As you write, there’s (usually) no magic. I use to say that things too magical smell.

Really helpful.