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I am really new about Ruby development. I am trying to create a json file with strings. My json file like below. Can you help to me
{
"App":{
"properties":{"color":"red"},
"screens":[
{"id":"page1", "properties":{"color":"red"}, "elements":[
{"type":"txtbox", "properties":{"color":"red"}},
{"type":"button", "properties":{"color":"red"}}
]
},
{"id":"page2", "properties":{"color":"red"}, "elements":[
{"type":"txtbox", "properties":{"color":"red"}},
{"type":"button", "properties":{"color":"red"}}
]
}
]
}
}
You can parse JSON with ruby from a hash:
require 'json'
my_hash = JSON.parse('{"hello": "goodbye"}')
puts my_hash["hello"] => "goodbye"
Or generate it from a hash:
require 'json'
my_hash = {:hello => "goodbye"}
puts JSON.generate(my_hash) => "{\"hello\":\"goodbye\"}"
Have a look at the JSON documentation.
Related
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I'm using API (which one I cannot share publicly), and get responses like
[
Response1.response(category1: "cat1", response: "parent0"),
Response1.response(category2: "cat2", response: "parent1"),
Response1.response(category3: "cat3", response: "parent2"),
Response1.response(category4: "cat4", response: "parent3")
]
and
[
Response2.response(subcategory1: "resp0", response: "child0parent0"),
Response2.response(subcategory2: "resp1", response: "child0parent1"),
Response2.response(subcategory3: "resp2", response: "child0parent2"),
Response2.response(subcategory4: "resp3", response: "child0parent3")
]
I want to show data on expandable tableview like below example image or let me know, how can I create 2D array from above two responses?
Please use this link to get the code for creating expandable tableviews in iOS -
https://www.appcoda.com/expandable-table-view/
Create 2 dimensional array like this -
[
"parent 0" : ["child0parent0", "child1parent0", "child2parent0",
"child3parent0"],
"parent 1" : ["child0parent1", "child1parent1", "child2parent1"],
....
]
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I'm using Ionic trying to use chooser plugin to chose file from phone, transform the URI to a File and send it as FormData. Nothing seems to work.
You can initialize FormData object by creating an instance from new FormData interface as given below.
const formData = new FormData()
const formData = new FormData();
formData.append('firstname', this.firstname);
formData.append('lastname', this.lastname);
formData.append('email' , this.email);
formData.append('phone' , this.phone);
formData.append('experience' , this.experience);
formData.append('userId' , this.userInfo.user.id);
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I want to convert id into string to use in url
#tutorial_id = Demotutorial.where("job_id = ?", #job_id).select( "id")
#t_id = #tutorial_id.to_s
render json: #t_id
Getting this error
S
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
Tutorial Json array
{"demotutorials":[{"demotutorials":{"id":50}}]}
there are two things for your problem
if you using where the result is activerecord relation, which can
have couple of records, you must select which row, I gave you
sample first fow to choose first record
#tuturial_id is a activerecord row, so you must choose which column, I gave you sample using #tutorial_id.id
below is sample code:
#tutorial_id = Demotutorial.where("job_id = ?", #job_id).select( "id").first
#t_id = #tutorial_id.id.to_s
render json: #t_id
Following code is work for me
#tutorial_id = Demotutorial.where("job_id = ?", #job_id).select( "id").first
#t_id = #tutorial_id[0].id.to_s
render json: #t_id
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I have a method that I can to push to a JSON call. The function looks like:
def my_function(name, text , id_person, id_company)
end
What I want is to get:
{"my_function":{"name":"names_value","text":"text_value ","id_person":"id_person_value","id_company":"id_company_value"}
Is there any easy way to do this?
The question is a bit unclear, but let me try with few answer possibilities
First of all this is not a JSON format
{"my_function":{"name":"names_value","text":"text_value ","id_person":"id_person_value","id_company":"id_company_value"}
There should not be double quote (") before semicolon (:)
obj = {
my_function:
{
name: "names_value",
text: "text_value",
id_person: "id_person_value",
id_company: "id_company_value"
}
}
If you want to get each of the data in that "JSON" format, you could do this
name = obj['my_function']['name'] #name_value
text = obj['my_function']['text'] #text_value
and so on...
But if you want to make a string data into JSON format, you could do this
def my_function(name_value, text_value, id_person_value, id_company_value)
{
my_function:
{
name: name_value,
text: text_value,
id_person: id_person_value,
id_company: id_company_value
}
}.to_json
end
I hope it's answering your question...
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I have a hash e.g.
{{"badan"=>1, "bau"=>1, "China,"=>1, "pilot."=>1, "RT"=>1, "penentu"=>1, "merupakan"=>1, "China, test test bau"=>1, "satu"=>1, "merupakan salah salah satu"=>1, "RT #WOWFakta: #WOWFakta: Di"=>1, "Di"=>1, "seorang pilot."=>1, "kelulusan menjadi menjadi seorang"=>1, "seorang"=>1, "salah"=>1, "#WOWFakta:"=>1, "satu penentu penentu kelulusan"=>1, "Di Beijing Beijing China,"=>1, "menjadi"=>1, "kelulusan"=>1, "test"=>1, "bau badan badan merupakan"=>1, "Beijing"=>1}=>{"kebali"=>1, "kff"=>1, "box"=>1, "#zannahoctavia"=>1, "kebali kamu kamu ca?"=>1, "ca?"=>1, "kampus"=>1, "kantin"=>1, "kff hah hah goods"=>1, "#zannahoctavia haha haha kali"=>1, "aja"=>1, "box kemang kemang aja"=>1, "yaa"=>1, "china"=>1, "hah"=>1, "hah. Jadi Jadi kebali"=>1, "goods pw pw tapi"=>1, "aja di di kff"=>1, "di"=>1, "pw"=>1, "kemang"=>1, "haha"=>1, "kali kantin kantin kampus"=>1, "Jadi"=>1, "tapi"=>1, "tapi yaa yaa hah."=>1, "kampus china china box"=>1, "hah."=>1, "kamu"=>1, "kali"=>1}}
and I want to retrieve all keys' values in a very efficient way. How can I do this?
You can iterate your hash like that it contain hash within hash
h.each do |key, value|
puts key
value.values.each do |v|
puts v
end
end
your hash contains a key and a value that is also a hash. You can try the following
hash.flatten.map(&:keys).inject(:+)
or use flat_map
hash.flatten.flat_map(&:keys)