Issue #48: FIX double error msg while answering

closess #48 (closed) Signed-off-by: Richard Heise rfhf19@inf.ufpr.br

src/pages/AnswerForm.js

@@ -4,7 +4,6 @@ import { makeStyles } from "@material-ui/core/styles";
 import Grid from "@material-ui/core/Grid";
 import api from "../api";
 import Button from "@material-ui/core/Button";
-import { createMuiTheme, MuiThemeProvider } from "@material-ui/core";
 import { useHistory } from "react-router-dom";
 
 import FormFieldText from "../components/fieldsAnswerForm/FormFieldText";
@@ -13,7 +12,6 @@ import FormFieldRadio from "../components/fieldsAnswerForm/FormFieldRadio";
 import FormFieldCheckbox from "../components/fieldsAnswerForm/FormFieldCheckbox";
 import FormFieldTitle from "../components/fieldsAnswerForm/FormFieldTitle";
 import FormFieldSubform from "../components/fieldsAnswerForm/FormFieldSubform";
-import { validate } from "json-schema";
 
 const useStyles = makeStyles(theme => ({
   menu: {
@@ -147,22 +145,24 @@ function AnwserForm() {
    * @param id - Form id got from the broswer's URL
    */
   async function answerForm(id) {
-    const res = await api
-      .post(`/answer/${id}`, backendTranslation())
-      .then(function(res) {
-        alert("Formulário respondido!");
-      })
-      .catch(error => {
-        if (error.response.status === 401) {
-          window.sessionStorage.removeItem("token");
-          window.sessionStorage.removeItem("userId");
-          let path = `/signin`;
-          history.push(path);
+    if (backendTranslation()) {
+      const res = await api
+        .post(`/answer/${id}`, backendTranslation())
+        .then(function(res) {
+          alert("Formulário respondido!");
+        })
+        .catch(error => {
+          if (error.response.status === 401) {
+            window.sessionStorage.removeItem("token");
+            window.sessionStorage.removeItem("userId");
+            let path = `/signin`;
+            history.push(path);
+            return;
+          }
+          alert("Ocorreu um erro ao responder seu formulário.");
           return;
-        }
-        alert("Ocorreu um erro ao responder seu formulário.");
-        return;
-      });
+        });
+    }
   }
 
   /**