How to generate queries and mutation string export from schema.graphql - flutter

Question

I am building a flutter application and using amplify_flutter 0.2.1 and amplify v5.1.0
, when I pull the project from the Amplify-admin UI it generates a graphQL schema schema.graphql which is useless at front-end because in order to fetch or modify the document, every time we need to write the graphQL query document like this:
String graphQLDocument =
'''mutation CreateTodo(\$name: String!, \$description: String) {
createTodo(input: {name: \$name, description: \$description}) {
id
name
description
}
}''';
var operation = Amplify.API.mutate(
request: GraphQLRequest<String>(document: graphQLDocument, variables: {
'name': 'my first todo',
'description': 'todo description',
}));
Amplify Flutter official CRUD Doc
I want to write it like this:
const input = {
name,
description
};
const output = {
id,name,description
};
var graphQLDoc = createToDO(input,output); // it should return the string object according to the input and output passed.
var operation = Amplify.API.mutate(
request: GraphQLRequest<String>(document: graphQLDoc, variables: {
'name': 'my first todo',
'description': 'todo description',
}));
OR it can be advanced like this:
const input = {
name:"hackrx",
description: "this works cool"
};
const output = {
id,name,description
};
var graphQLQueryRes = await createToDO(input,output); // it should return the whole fetched object according to the output passed.

Answer 1

you can do this way that I use in my code:
String myMutation(name, description) {
var graphQLDocument = '''mutation CreateTodo {
createTodo(input: {name: $name, description: $description}) {
id
name
description
}
}
''';
return graphQLDocument;
}
var operation = Amplify.API.mutate(
request:
GraphQLRequest<String>(document: myMutation('john', 'doe')));
for getting the response:
you can run amplify codegen models in the terminal that generate data models, based on your schema.graphql tables. and after that, you can do it this way: e.g you have a user table
User.fromJson(operation.response.data['createToDo]);
now you have an object of user class.