I am currently developing a command line tool using Ruby that is designed to parse JSON data from diverse sources and perform certain operations on the retrieved information. To make it user-friendly, I have incorporated a feature where users can configure basic settings through a YAML file, as demonstrated below:
# config.yml
json_sources:
sourcea:
url: 'https://example.com/some/json/api.json'
list_key: 'response.items'
name_key: 'name'
sourceb:
url: 'https://otherexample.org/another/api.json'
list_key: ''
name_key: 'basics.name'
In the given example, the JSON response fetched from
https://example.com/some/json/api.json{
"response": {
"items": [
{
"id": 1,
"name": 'Item 1'
},
{
"id": 2,
"name": 'Item 2'
}
]
}
}
Similarly, the JSON obtained from
https://otherexample.org/another/api.json[
{
"basics": {
"name": "Other Item 1"
}
},
{
"basics": {
"name": "Other Item 2"
}
}
]
In both scenarios, the url serves as the link to the respective JSON content, list_key refers to the key to be looped over within the JSON object, while name_key indicates the specific key to retrieve from each element. Hence, my query pertains to efficiently parsing list_key and name_key in Ruby.
I am curious if there exists a convenient method in Ruby for accessing the value of a key in a hash by specifying selectors akin to those used in JavaScript, or whether I should custom-build such functionality myself?