Avoid Object of type DAEmpty is not JSON serializable error#902
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BryceStevenWilley wants to merge 1 commit intojhpyle:masterfrom
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Avoid Object of type DAEmpty is not JSON serializable error#902BryceStevenWilley wants to merge 1 commit intojhpyle:masterfrom
Object of type DAEmpty is not JSON serializable error#902BryceStevenWilley wants to merge 1 commit intojhpyle:masterfrom
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Due to a slight change in jhpyle@0f5b49a (not mentioned in the description, so I don't know what the intention was for changing it), `as_dict()` is checked for and called before `to_json()` when `safe_json` is converting objects to JSON serializeable types. However, when calling `getattr()` on a `DAEmpty`, it will return another `DAEmpty` object. Since `DAEmpty`s are also callable objects that return another `DAEmpty`, calling `as_dict()` first will still leave a `DAEmpty` in the output, which is not safely JSON serializeable, leaving the issues raised in jhpyle#877 unfixed. Adding a special case for DAEmpty to call `to_json()` avoids this issue. Other approaches that could fix the issue include: * Just moving the `hasattr(the_object, "to_json")...` check before the `as_dict` one. While this is the simplest solution, it adds an implicit assumption in the code that will be easily missed on future refactorings of this function. * Making sure that the results of calling `as_dict` are still JSON safe. This would cause an infinite recursion on DAEmptys, and either wouldn't fix error or would result in max level nested entries for DAEmptys. * Add a `as_dict` function to DAEmpty. This would work, but `as_dict` isn't used elsewhere in docassemble code much.
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Due to a slight change in 0f5b49a (not mentioned in the description, so I don't know what the intention was for changing it),
as_dict()is checked for and called beforeto_json()whensafe_jsonis converting objects to JSON serializeable types.However, when calling
getattr()on aDAEmpty, it will return anotherDAEmptyobject. SinceDAEmptys are also callable objects that return anotherDAEmpty, callingas_dict()first will still leave aDAEmptyin the output, which is not safely JSON serializeable, leaving the issues raised in #877 unfixed.Adding a special case for DAEmpty to call
to_json()avoids this issue. Other approaches that could fix the issue include:hasattr(the_object, "to_json")...check before theas_dictone. While this is the simplest solution, it adds an implicit assumption in the code that will be easily missed on future refactorings of this function.as_dictare still JSON safe. This would cause an infinite recursion on DAEmptys, and either wouldn't fix error or would result in max level nested entries for DAEmptys.as_dictfunction to DAEmpty. This would work, butas_dictisn't used elsewhere in docassemble code much.