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    Success! Looks like we've fixed this one. According to our records the fix was applied for DSGNR-1713 in a recent build.
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    Default - Update 341 JSON.stringify cannot serialize cyclic structures.

    - Update 341 JSON.stringify cannot serialize cyclic structures.


    I was trying to work with a project that I had going yesterday with build 337 that worked fine, it would load my data. I upgraded to 341 and now I get JSON.stringify cannot serialize cyclic structures.

    To test what I did then was go into the directory where the json file was being stored and I removed it. I figured I would get some kind of missing file or object type error. Instead I got the same error. JSON.stringify cannot serialize cyclic structures.

    So I don't think it had anything to do with my data format, my data format is still working on my mac at home which is version 337.

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    Sencha - Architect Dev Team jjohnston's Avatar
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    Would you be able to provide the project and data file that are triggering this error?
    Jason Johnston
    @lojjic
    Sencha Architect Development Team

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    Default


    I have received this error as well while testing someone else's nested list code. There is another related thread with the same issue. I wonder if this is just an issue with the newest build?

    Thanks

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    I seem to have the same problem since 341 on all my Json Stores (that all have a RestProxy).

    Sample code:

    Code:
    Ext.define('MyApp.store.CustomerStore', {
        extend: 'Ext.data.Store',
        requires: [
            'MyApp.model.Customer'
        ],
    
        config: {
            model: 'MyApp.model.Customer',
            storeId: 'CustomerStore',
            proxy: {
                type: 'rest',
                url: 'http://localhost:81/Customer/',
                reader: {
                    type: 'json',
                    messageProperty: 'ErrorMessage',
                    rootProperty: 'Customers'
                }
            }
        }
    });
    [edit]
    Might I add that this problem only occurs within Designer? I get the error if I use 'Load Data', if I test my application in a browser, loading stores works just fine.

    Thought: maybe the 'rootProperty' of the JsonReader isn't respected in Designer since build 341?
    [/edit]

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    I don't have the project as it was anymore, however the thread that was referenced here does have a project that I was having this issue with as well.

    Unfortunately I can not recreate the error, it just seems to happen randomly. The next time it happens I will save off the project and post a copy of it.

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    Thanks guys. I have tried reproducing this based on the info here:
    - Combinations of rest proxy pointing to a local json file, with json reader plus rootProperty
    - The sample project linked to from the other thread, using the nested json tree data supplied there as well as my own

    In all cases the store is able to load its data correctly without giving this error. I'm sure there's some edge case I'm just not hitting. If any of you can provide a testcase project that triggers this it would help immensely.
    Jason Johnston
    @lojjic
    Sencha Architect Development Team

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    Euhm, well I just copied some of my code (the Model and the Store, Proxy & Reader) over to a new project to provide you with a sample; everything works fine in the fresh project .

    Restarted Designer on my full project: problem solved! Stores now all load Data (no changes to code).

    As it doesn't seem to be a problem in code; do you still need my sample project?