In Angular 5 HTTP GET request, the value "null" is being converted to ""null""

I'm currently in the process of transitioning our application from Angular 4 to Angular 5. In Angular 5, when passing an object model as parameters, if one of the values is null, it gets converted to a "null" string which is causing issues for us. Here's how the parameters are set:

options = {
                headers: header, params: Object.getOwnPropertyNames(jsonParamObject)
                    .reduce((p, key) => p.set(key, jsonParamObject[key]), new HttpParams())
            };

In the code above, we use 'jsonParamObject' provided by the method caller. This object can have any number of values. If one of the values is null and we make an http request, the null value is converted to a "null" string. Could you please suggest how this can be avoided or if there's an alternative solution? One option could be to use "0" instead of null, but that would involve significant code changes in our application, so I'm looking for a simpler or better approach.

Answer №1

I encountered a similar problem with a specific attribute within an entity. This attribute is labeled as parent_id and the entity itself is known as dataObj.

To address this issue, I implemented the following solution:

this.dataObj.parent_id = this.dataObj.parent_id == 'null' ? null : this.dataObj.parent_id;

Answer №2

I encountered a similar problem when attempting to send a string from the client side. Every time I tried sending a null string, it would end up getting converted to "null".

To resolve this issue, instead of passing a null string, I passed an empty string ("") and that solved the problem.

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