Ruby on rails 在JBuilder中,如何将部分呈现为哈希值?
我有一个树状的对象图,类似于以下内容:Ruby on rails 在JBuilder中,如何将部分呈现为哈希值?,ruby-on-rails,json,jbuilder,Ruby On Rails,Json,Jbuilder,我有一个树状的对象图,类似于以下内容: { :name => "Grandparent", :children => { :child_a => { :name => "Parent A", :children => { :grandchild_a_a => { :name => "Child A-A", :children => {}
{
:name => "Grandparent",
:children => {
:child_a => {
:name => "Parent A",
:children => {
:grandchild_a_a => {
:name => "Child A-A",
:children => {}
}
:grandchild_a_b => {
:name => "Child A-B"
:children => {}
}
}
}
:child_b => {
:name => "Parent B",
:children => {}
}
}
}
我想生成反映此结构的JSON。我不知道子嵌套有多深,每个级别的属性都是相同的。子散列中的键很重要,必须保留
我想使用JBuilder分部来表示一个级别,然后递归地调用它。以下是我目前的模板:
# _level_partial.json.jbuilder
# passing the above object graph as :level
json.name level[:name]
json.children do
level[:children].each do |key, child|
# How do I map the following to the given key?
json.partial! "level_partial", :level => child
end
end
我可以很容易地通过部分调用为每个子级生成JSON,但这会将其直接插入JSON输出。如何将分部的结果映射到特定的哈希/对象键?我找到了答案。尽管它似乎大部分没有文档记录,
JBuilder.set代码>可以接受块而不是显式值。该块可以调用partial,然后将其分配给散列
json.name level[:name]
json.children do
level[:children].each do |key, child|
json.set! key do
json.partial! "level_partial", :level => child
end
end
end