Can get a user id included in a POST request

src/controllers/user_controller.rs

@@ -48,5 +48,8 @@ pub fn get_multiple(request: &mut HttpRequestHandler) -> RequestResult {
 
 /// Get advanced information about a user
 pub fn get_advanced_info(request: &mut HttpRequestHandler) -> RequestResult {
+    let user_id = request.post_user_id("userID")?;
+
+
     request.success("get user info")
 }

src/data/http_request_handler.rs

@@ -12,7 +12,7 @@ use crate::data::api_client::APIClient;
 use crate::data::config::conf;
 use crate::data::error::{ExecError, ResultBoxError};
 use crate::data::user::UserID;
-use crate::helpers::{account_helper, api_helper};
+use crate::helpers::{account_helper, api_helper, user_helper};
 
 /// Http request handler
 ///
@@ -303,4 +303,19 @@ impl HttpRequestHandler {
 
         Ok(list)
     }
+
+    /// Get the ID of a user included in a POST request
+    pub fn post_user_id(&mut self, name: &str) -> ResultBoxError<UserID> {
+        let user_id = self.post_i64(name)?;
+
+        if user_id < 1 {
+            self.bad_request(format!("Invalid user specified in '{}'!", name))?;
+        }
+
+        if !user_helper::exists(user_id)? {
+            self.not_found(format!("User with ID {} not found!", user_id))?;
+        }
+
+        Ok(user_id)
+    }
 }

src/helpers/database.rs

@@ -107,6 +107,11 @@ impl QueryInfo {
                                                              -> Result<Vec<E>, Box<dyn Error>> {
         query(self, process_function)
     }
+
+    /// Execute count query
+    pub fn exec_count(self) -> ResultBoxError<usize> {
+        count(self)
+    }
 }
 
 /// Struct used to read the result of a request

src/helpers/user_helper.rs

@@ -52,4 +52,11 @@ fn exec_get_user_query(query: database::QueryInfo) -> ResultBoxError<User> {
             account_image_visibility,
         })
     })
+}
+
+/// Check out whether a given id maps to a user or not
+pub fn exists(id: UserID) -> ResultBoxError<bool> {
+    Ok(database::QueryInfo::new(USERS_TABLE)
+        .cond_i64("ID", id)
+        .exec_count()? > 0)
 }