Add findFirstOrderedByAttribute:ascending:context: method for getting…

… min/max values easier
magicalpanda · Oct 1, 2012 · abb7314 · abb7314
1 parent 51fe465
commit abb7314
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Showing 4 changed files with 24 additions and 2 deletions.
diff --git a/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalFinders.h b/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalFinders.h
@@ -30,9 +30,11 @@
 + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm andRetrieveAttributes:(NSArray *)attributes inContext:(NSManagedObjectContext *)context;
 + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortBy ascending:(BOOL)ascending andRetrieveAttributes:(id)attributes, ...;
 + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortBy ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context andRetrieveAttributes:(id)attributes, ...;
-
 + (id) MR_findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue;
 + (id) MR_findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context;
++ (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending;
++ (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context;
+
 + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue;
 + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context;
 + (NSArray *) MR_findByAttribute:(NSString *)attribute withValue:(id)searchValue andOrderBy:(NSString *)sortTerm ascending:(BOOL)ascending;

diff --git a/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalFinders.m b/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalFinders.m
@@ -101,6 +101,21 @@ + (id) MR_findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue
                                inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
 }
 
++ (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context;
+{
+    NSFetchRequest *request = [self MR_requestAllSortedBy:attribute ascending:ascending inContext:context];
+    [request setFetchLimit:1];
+
+    return [self MR_executeFetchRequestAndReturnFirstObject:request inContext:context];
+}
+
++ (id) MR_findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending;
+{
+    return [self MR_findFirstOrderedByAttribute:attribute
+                                      ascending:ascending
+                                      inContext:[NSManagedObjectContext MR_contextForCurrentThread]];
+}
+
 + (id) MR_findFirstWithPredicate:(NSPredicate *)searchTerm
 {
     return [self MR_findFirstWithPredicate:searchTerm inContext:[NSManagedObjectContext MR_contextForCurrentThread]];

diff --git a/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalRequests.m b/MagicalRecord/Categories/NSManagedObject/NSManagedObject+MagicalRequests.m
@@ -108,7 +108,10 @@ + (NSFetchRequest *) MR_requestAllSortedBy:(NSString *)sortTerm ascending:(BOOL)
 + (NSFetchRequest *) MR_requestAllSortedBy:(NSString *)sortTerm ascending:(BOOL)ascending withPredicate:(NSPredicate *)searchTerm inContext:(NSManagedObjectContext *)context
 {
 	NSFetchRequest *request = [self MR_requestAllInContext:context];
-	if (searchTerm) [request setPredicate:searchTerm];
+	if (searchTerm)
+    {
+        [request setPredicate:searchTerm];
+    }
 	[request setFetchBatchSize:[self MR_defaultBatchSize]];
 
     NSMutableArray* sortDescriptors = [[NSMutableArray alloc] init];

diff --git a/MagicalRecord/Core/MagicalRecordShorthand.h b/MagicalRecord/Core/MagicalRecordShorthand.h
@@ -50,6 +50,8 @@
 + (id) findFirstWithPredicate:(NSPredicate *)searchTerm sortedBy:(NSString *)sortBy ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context andRetrieveAttributes:(id)attributes, ...;
 + (id) findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue;
 + (id) findFirstByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context;
++ (id) findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending;
++ (id) findFirstOrderedByAttribute:(NSString *)attribute ascending:(BOOL)ascending inContext:(NSManagedObjectContext *)context;
 + (NSArray *) findByAttribute:(NSString *)attribute withValue:(id)searchValue;
 + (NSArray *) findByAttribute:(NSString *)attribute withValue:(id)searchValue inContext:(NSManagedObjectContext *)context;
 + (NSArray *) findByAttribute:(NSString *)attribute withValue:(id)searchValue andOrderBy:(NSString *)sortTerm ascending:(BOOL)ascending;