Can cancel the response to a survey

src/helpers/survey_helper.rs

@@ -100,6 +100,33 @@ pub fn exists(post_id: u64) -> ResultBoxError<bool> {
         .map(|r| r > 0)
 }
 
+/// Cancel the response of a user to a survey
+pub fn cancel_response(user_id: &UserID, survey_id: u64) -> ResultBoxError {
+    database::DeleteQuery::new(SURVEY_RESPONSE_TABLE)
+        .cond_u64("ID_sondage", survey_id)
+        .cond_user_id("ID_utilisateurs", user_id)
+        .exec()
+}
+
+/// Check out whether a choice exists or not
+pub fn choice_exists(survey_id: u64, choice_id: u64) -> ResultBoxError<bool> {
+    database::QueryInfo::new(SURVEY_CHOICES_TABLE)
+        .cond_u64("ID_sondage", survey_id)
+        .cond_u64("ID", choice_id)
+        .exec_count()
+        .map(|f| f > 0)
+}
+
+/// Save the new response of a user to a survey
+pub fn send_response(user_id: &UserID, survey_id: u64, choice_id: u64) -> ResultBoxError {
+    database::InsertQuery::new(SURVEY_RESPONSE_TABLE)
+        .add_user_id("ID_utilisateurs", user_id)
+        .add_u64("ID_sondage", survey_id)
+        .add_u64("ID_sondage_choix", choice_id)
+        .add_str("date_envoi", &mysql_date())
+        .insert_drop_result()
+}
+
 /// Turn a database entry into a row object
 fn db_to_survey(row: &database::RowResult) -> ResultBoxError<Survey> {
     let survey_id = row.get_u64("ID")?;