getModifiedDiff()

[karam-naser]

i'm sending those 2 json objects
{"output": [{"text": "قَلَم", "type": "text"}], "answers": [{"text": "ـم", "correct": true}, {"text": "م", "correct": false}, {"text": "ـمـ", "correct": false}, {"text": "مـ", "correct": false}], "question": [{"text": "قَلَـ....", "type": "text", "translation": ""}], "answersType": "text", "questionText": "Harfin uygun yazılışını seçiniz"}

{"questionText":"Harfin uygun yaz\u0131l\u0131\u015f\u0131n\u0131 se\u00e7iniz","question":[{"type":"text","text":"\u0642\u064e\u0644\u064e\u0640....","translation":"","upload":""}],"answersType":"text","answers":[{"text":"\u0640\u0645","correct":true,"upload":"a0vA206.mp4","image":""},{"text":"\u0645","correct":false,"upload":"a0vA207.mp4","image":""},{"text":"\u0640\u0645\u0640","correct":false,"upload":"","image":""},{"text":"\u0645\u0640","correct":false,"upload":"","image":""}],"output":[{"type":"text","text":"\u0642\u064e\u0644\u064e\u0645","upload":""}]}

and using jsonDiff with this flags
JsonDiff::REARRANGE_ARRAYS + JsonDiff::COLLECT_MODIFIED_DIFF

when i call getModifiedDiff() it showed null array even it's obvious there is a difference between 2 json

[vearutop]

getModifiedDiff() is expected to return a list of paths that exist in both JSON documents with different values.

In your example second document does not seem to modify any value existing in first document, but rather adds new values.

Maybe you need to use getAdded() or getAddedPaths() instead of getModifiedDiff() in this case.

Here is getPatch() from first to second document:

[
    {
        "value": "",
        "op": "add",
        "path": "/output/0/upload"
    },
    {
        "value": "a0vA206.mp4",
        "op": "add",
        "path": "/answers/0/upload"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/0/image"
    },
    {
        "value": "a0vA207.mp4",
        "op": "add",
        "path": "/answers/1/upload"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/1/image"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/2/upload"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/2/image"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/3/upload"
    },
    {
        "value": "",
        "op": "add",
        "path": "/answers/3/image"
    },
    {
        "value": "",
        "op": "add",
        "path": "/question/0/upload"
    }
]

Does this help your issue?

[karam-naser]

thanks for your answer
if you look at answers you see the difference
1st json:
answers": [{"text": "ـم", "correct": true}, {"text": "م", "correct": false}, {"text": "ـمـ", "correct": false}, {"text": "مـ", "correct": false}], "question": [{"text": "قَلَـ....", "type": "text", "translation": ""}],
2nd json:
"answers":[{"text":"\u0640\u0645","correct":true,"upload":"a0vA206.mp4","image":""},{"text":"\u0645","correct":false,"upload":"a0vA207.mp4","image":""},{"text":"\u0640\u0645\u0640","correct":false,"upload":"","image":""},{"text":"\u0645\u0640","correct":false,"upload":"","image":""}]

the bolded section not exist in the one

[karam-naser]

i've made a function to delete null values from both JSONs and then call getPatch() and it's worked now.
I can find if there's any difference between them

[vearutop]

the bolded section not exist in the one

Yes, and because of that these sections do not contribute to getModifiedDiff(), they are additions, not modifications (in terms of JsonDiff).