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August 9, 2022 18:20
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This is a custom ApolloLink which we use to clean the "__typename" field to prevent sending it to the GraphQL server. omitDeep based on this gist: https://gist.github.com/Billy-/d94b65998501736bfe6521eadc1ab538
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| const cleanTypenameLink = new ApolloLink((operation, forward) => { | |
| if (operation.variables) { | |
| operation.variables = this.omitDeep (operation.variables, "__typename") | |
| } | |
| return forward(operation).map((data) => { | |
| return data; | |
| }) | |
| }) | |
| private omitDeep(obj, key) { | |
| const keys = Object.keys(obj) | |
| const newObj = {} | |
| keys.forEach((i) => { | |
| if (i !== key) { | |
| const val = obj[i] | |
| if (Array.isArray(val)) newObj[i] = this.omitDeepArrayWalk(val, key) | |
| else if (typeof val === 'object' && val !== null) newObj[i] = this.omitDeep(val, key) | |
| else newObj[i] = val | |
| } | |
| }) | |
| return newObj | |
| } | |
| private omitDeepArrayWalk(arr, key) { | |
| return arr.map((val) => { | |
| if (Array.isArray(val)) return this.omitDeepArrayWalk(val, key) | |
| else if (typeof val === 'object') return this.omitDeep(val, key) | |
| return val | |
| }) | |
| } |
Hi @pedall,
In the init component I concatenate the Apollo links used in the app and composed them like this:
const myAppLink = ApolloLink.from ([
cleanTypenameLink,
resetTokenLink,
addTokenLink,
httpLink
])
this.apollo.create({
link: myAppLink,
cache: cache
})
Please let me know if this helps!
Carlos
Thanks for the snippet! I had to extend the omitDeep method to also let through Date objects, else they got stripped:
const omitDeep = (obj: object, key: string | number): object => {
const keys: Array<any> = Object.keys(obj);
const newObj: any = {};
keys.forEach((i: any) => {
if (i !== key) {
const val: any = obj[i];
if (val instanceof Date) newObj[i] = val;
else if (Array.isArray(val)) newObj[i] = omitDeepArrayWalk(val, key);
else if (typeof val === 'object' && val !== null) newObj[i] = omitDeep(val, key);
else newObj[i] = val;
}
});
return newObj;
};
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how do you integrate that ApolloLink in the ApolloClient?