This is wrong !!
Think about it, what would then happen with a mixed list ?
{ #key->#value. 1. true }
That would generate invalid JSON.
> On 28 Feb 2019, at 14:56, Tim Mackinnon <tim@testit.works> wrote:
>
> As I merrily chat to myself - I noticed that STONWriter almost does what I
> need - it just complains in #writeAssociation: so I make a subclass
> STONJSONWriter and override:
>
> writeAssociation: association
> “don’t smack me….
> jsonMode
> ifTrue: [ self error: 'wrong object class for JSON mode' ]."
> self
> encodeKey: association key
> value: association value
>
> I get exactly what I would expect - valid Json from simple Collections,
> Associations and Array.
>
> So would it be handy to have such a writer in the image (or let STONWriter be
> more configurable for this?)
>
> Tim
>
> p.s. my finally example would then be:
>
> ex := { 'track'-> 'pharo'.
> 'language' -> 'smalltalk'.
> 'exercises' ->
> {'slug' -> 'hello'.
> 'id' -> 55.
> 'topics' -> #('a' 'b' 'c') }
> }.
>
> String streamContents: [ :stream |
> (STONJSONWriter on: (stream))
> jsonMode: true;
> prettyPrint: true;
> writeList: ex ].
>
>> On 28 Feb 2019, at 13:45, Tim Mackinnon <tim@testit.works> wrote:
>>
>> Just to add more flavour to this - it seems quite wordy that we have to do
>> this (or equivalent) to write some config.
>>
>> ex := OrderedDictionary new
>> at: 'track' put: 'pharo';
>> at: 'language' put: 'smalltalk';
>> at: 'exercises' put: (
>> OrderedDictionary new
>> at: 'slug' put: 'hello';
>> at: 'id' put: 55;
>> at: 'topics' put: #('a' 'b' 'c');
>> yourself );
>> yourself.
>>
>> String streamContents: [ :stream |
>> (NeoJSONWriter on: (stream)) prettyPrint: true;
>> mapInstVarsFor: Association;
>> nextPut: ex ].
>>
>> So I’m still wondering the NeoJSONObjectMapping can do something easy for
>> Association other than simply mapInstVars?
>>
>>
>>> On 28 Feb 2019, at 13:36, Tim Mackinnon <tim@testit.works> wrote:
>>>
>>> Hi Sven - is there no convenience shortcut we can use in our code to make
>>> this less wordy when we are specifying it?
>>>
>>> E.g. the following is very convenient to write - but doesn’t work (as you
>>> have $‘ and not $“ )
>>>
>>> ex := { 'track'-> 'pharo'.
>>> 'language' -> 'smalltalk'.
>>> 'exercises' ->
>>> {'slug' -> 'hello'.
>>> 'id' -> 55.
>>> 'topics' -> #('a' 'b' 'c') }
>>> }.
>>>
>>> String streamContents: [ :stream |
>>> (STONWriter on: (stream)) prettyPrint: true; writeList: ex ].
>>>
>>> I had thought maybe NeoJSON might help and put:
>>>
>>> String streamContents: [ :stream |
>>> (NeoJSONWriter on: (stream)) prettyPrint: true;
>>> "mapInstVarsFor: Association;"
>>> nextPut: ex ].
>>>
>>> But I get the error about missing an association mapping. If I uncomment
>>> that bit - I get things like: { "value" : “pharo" },
>>>
>>> So is there a way I can write a simple mapper for Association that will
>>> write out the key in a string and the value in a string?
>>>
>>> I’m quite suprised we can’t easily write out fragments of Json in our code
>>> in a light weight way? Or do I need to make a proper Config object and then
>>> teach it how to map properly such that rather than fiddling with our { x->y
>>> } dictionary sugar I do something like:
>>>
>>> Config new at: ‘id’ is: 123; at: ‘name’ is: ‘Tim’; at: ‘exercises’ is: #(1
>>> 2 3).
>>>
>>> And I guess at:is: can do the Association asDictionary thing?
>>>
>>> But I thought Neo might give me something like that, as it must be terribly
>>> common?
>>>
>>> Tim
>>>
>>>> On 28 Feb 2019, at 13:16, Sven Van Caekenberghe <s...@stfx.eu> wrote:
>>>>
>>>> STONJSON toString: { #id->1. #name->'tim' } asDictionary.
>>>>
>>>> JSON cannot deal with Associations by themselves.
>>>>
>>>>> On 28 Feb 2019, at 14:05, Tim Mackinnon <tim@testit.works> wrote:
>>>>>
>>>>> I am stumped about how to write out some simple json (for a config file).
>>>>> I didn't think I need Neo, and STONJSON would be fine but it seems like
>>>>> creating items like:
>>>>>
>>>>> { 'id'-> self id. 'name' -> self name }
>>>>>
>>>>> gives an error about the association. I think you have to do: { ('id'->
>>>>> self id) asDictionary. ('name' -> self name) asDictionary } everywhere….
>>>>>
>>>>> But when I switch over to NeoJsonWriter it also complains about
>>>>> Assocations too. I just want a simple output like:
>>>>> { "id" : 12, "name" : "tim” }
>>>>>
>>>>> I thought it was simple to do this? Am I missing something obvious.
>>>>>
>>>>> Tim
>>>>
>>>>
>>>
>>>
>>
>>
>
>
