I just realized that the data being inserted into a JSONB column is a string like buildMenu: function(items) {
var node = new Array();
items.forEach(function(elem,index,arr) {
node.push(elem.Name);
if (elem.SubBranch.length > 0) {
return this.buildMenu(elem.SubBranch); //error is here
}
}, this);
return node;
}
instead of an object like "{\"foo\": 3}". I'm pretty sure the cause is due to setting the SQLAlchemy model's field with
{"foo": 3}instead of
reading.blob = blob_json
I haven't been able to figure out a way to correct the existing data, though. The Postgres docs give examples of converting text to JSON, extracting array and object elements out of JSON, etc., but I can't find anything that shows how to select the text of a JSONB column that has only one string value.
答案 0 :(得分：1)
是的，就在我得到这个时：
SELECT (('"{\"foo\":42}"'::JSONB)->>0)::JSONB;
答案 1 :(得分：0)
尤里卡！ #postgres上的DeciBull想出了
SELECT (json_build_array('"{\"Stuff.Hello\": 0, \"Stuff.Hello2\": 1000}"'::jsonb)->>0)::jsonb
{"Stuff.Hello": 0, "Stuff.Hello2": 1000}