[LRUG] [Help request] Programmatically inserting user data into js chart

[Jesse Waites]

Thanks Oto!

So strange...

def make_jsonish(array)
      elements = array.each_with_index.map { |num, i|
        { key: i, value: num}
      }

    end

without json pretty generate now is:

@jsonish: [{:key=>0, :value=>5}, {:key=>1, :value=>3}, {:key=>2, :value=>2}]

In the page source, it is:

var dataset =

[{:key=>0, :value=>5}, {:key=>1, :value=>3}, {:key=>2,
:value=>2}] ;


which is the greater than sign in HTML. So weird!!!

On Thu, Jun 9, 2016 at 2:20 AM, Oto Brglez <otobrglez at gmail.com> wrote:

> Hey!
>
> Loose "JSON.pretty_generate" at the and new-lines will go away.
>
> Cheers!
>
> - Oto
>
> On Wed, Jun 8, 2016 at 11:53 PM Jesse Waites <jesse.waites at gmail.com>
> wrote:
>
>> Update: I tried it with Tom's pretty generate JSON method and am a little
>> closer - @jsonish is now:
>>
>> @jsonish: "[\n {\n \"key\": 0,\n \"value\": 5\n },\n {\n \"key\": 1,\n
>> \"value\": 3\n },\n {\n \"key\": 2,\n \"value\": 2\n }\n]"
>>
>> So looks like I need to strip the new lines out? Or rather, not put them
>> in in the first place? Its good to know I was close in my solution path.
>>
>> On Wed, Jun 8, 2016 at 1:03 PM, John Cinnamond <jc at panagile.com> wrote:
>>
>>> As an aside, `map` returns an enumerator if you don’t give it a block,
>>> and enumerators have a `with_index` method. So instead of:
>>>
>>>     array.each_with_index.map { |value, idx| … }
>>>
>>> You can say:
>>>
>>>     array.map.with_index { |value, idx| … }
>>>
>>> This only saves you 5 characters, but I think it makes the intent
>>> slightly clearer.
>>>
>>>
>>> On Wed, 08 Jun 2016 at 17:57 Tom Stuart <Tom Stuart
>>> <Tom+Stuart+%3Ctom at codon.com%3E>> wrote:
>>>
>>>> On 8 Jun 2016, at 14:32, Jesse Waites <jesse.waites at gmail.com> wrote:
>>>> > def make_jsonish(array)
>>>> > array.each_with_index do |num, i|
>>>> > puts "{ key: #{i}, value: #{num}},"
>>>> > end
>>>> > end
>>>>
>>>> This looks pretty close to being right, but you want to return a string
>>>> by joining all the individual lines, not print them out. For example:
>>>>
>>>> def make_jsonish(array)
>>>> array.each_with_index.map { |num, i|
>>>> "{ key: #{i}, value: #{num}},"
>>>> }.join("\n")
>>>> end
>>>>
>>>> Less significantly, it would be better to rely on Ruby to turn the
>>>> resulting data structure (including enclosing square brackets) into JSON
>>>> for you, so that you’re not responsible for the conversion yourself:
>>>>
>>>> def make_jsonish(array)
>>>> elements = array.each_with_index.map { |num, i|
>>>> { key: i, value: num}
>>>> }
>>>> JSON.pretty_generate(elements)
>>>> end
>>>>
>>>> Cheers,
>>>> -Tom
>>>> _______________________________________________
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>>>
>>>
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>>
>>
>> --
>> Jesse Waites
>> JesseWaites.com
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>
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-- 
Jesse Waites
JesseWaites.com
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