Cannot find updated row SQLite IOS - ios

Question

I have an app where I take details of the user and save it to SQLite db. Also I am able to find the details and display the result.
-(void) createDB{
NSString *docsDir;
NSArray *dirPaths;
// Get the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths[0];
// Build the path to the database file
_databasePath = [[NSString alloc]
initWithString: [docsDir stringByAppendingPathComponent:
#"contactUnique6.db"]];
NSFileManager *filemgr = [NSFileManager defaultManager];
if ([filemgr fileExistsAtPath: _databasePath ] == NO)
{
const char *dbpath = [_databasePath UTF8String];
if (sqlite3_open(dbpath, &_contactDB) == SQLITE_OK)
{
char *errMsg;
const char *sql_stmt =
"CREATE TABLE IF NOT EXISTS CONTACTS (ID INTEGER PRIMARY KEY AUTOINCREMENT , NAME TEXT , ADDRESS TEXT, PHONE TEXT )";
if (sqlite3_exec(_contactDB, sql_stmt, NULL, NULL, &errMsg) != SQLITE_OK)
{
_status.text = #"Failed to create table";
}
sqlite3_close(_contactDB);
} else {
_status.text = #"Failed to open/create database";
}
}
- (IBAction)saveData:(id)sender {
sqlite3_stmt *statement;
const char *dbpath = [_databasePath UTF8String];
if (sqlite3_open(dbpath, &_contactDB) == SQLITE_OK)
{
NSString *insertSQL = [NSString stringWithFormat:
#"INSERT OR IGNORE INTO CONTACTS (name, address, phone) VALUES (\"%#\", \"%#\", \"%#\")",
_name.text, _address.text, _phone.text];
const char *insert_stmt = [insertSQL UTF8String];
sqlite3_prepare_v2(_contactDB, insert_stmt,
-1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
_status.text = #"Contact added";
_name.text = #"";
_address.text = #"";
_phone.text = #"";
} else {
_status.text = #"Failed to add contact";
}
sqlite3_finalize(statement);
sqlite3_close(_contactDB);
}
}
- (IBAction)findContact:(id)sender {
const char *dbpath = [_databasePath UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &_contactDB) == SQLITE_OK)
{
NSString *querySQL = [NSString stringWithFormat:
#"SELECT address, phone FROM contacts WHERE name=\"%#\"",
_name.text];
const char *query_stmt = [querySQL UTF8String];
if (sqlite3_prepare_v2(_contactDB,
query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
NSString *addressField = [[NSString alloc]
initWithUTF8String:
(const char *) sqlite3_column_text(
statement, 0)];
_address.text = addressField;
NSString *phoneField = [[NSString alloc]
initWithUTF8String:(const char *)
sqlite3_column_text(statement, 1)];
_phone.text = phoneField;
_status.text = #"Match found";
} else {
_status.text = #"Match not found";
_address.text = #"";
_phone.text = #"";
}
sqlite3_finalize(statement);
}
sqlite3_close(_contactDB);
}
}
The above code is working good. However when I am trying to use an update, it is not displaying when I try to find it. It gives me a match not found even though the contact was saved.
This is the code by which I am trying to update:
- (IBAction)saveData:(id)sender {
sqlite3_stmt *statement;
const char *dbpath = [_databasePath UTF8String];
if (sqlite3_open(dbpath, &_contactDB) == SQLITE_OK)
{
NSString *insertSQL = [NSString stringWithFormat:
#"INSERT OR IGNORE INTO CONTACTS (name, address, phone) VALUES (\"%#\", \"%#\", \"%#\")",
_name.text, _address.text, _phone.text];
insertSQL = [NSString stringWithFormat:
#"UPDATE CONTACTS SET name=\"%#\", address=\"%#\", phone=\"%#\"",
_name.text, _address.text, _phone.text];
const char *insert_stmt = [insertSQL UTF8String];
sqlite3_prepare_v2(_contactDB, insert_stmt,
-1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
_status.text = #"Contact added";
_name.text = #"";
_address.text = #"";
_phone.text = #"";
} else {
_status.text = #"Failed to add contact";
}
sqlite3_finalize(statement);
sqlite3_close(_contactDB);
}
}
Basically my aim is to be able to save-update-find. (without losing the primary key on update, as I have FK relations)
EDIT
This is my create db method
-(void) createDB{
NSString *docsDir;
NSArray *dirPaths;
// Get the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths[0];
// Build the path to the database file
_databasePath = [[NSString alloc]
initWithString: [docsDir stringByAppendingPathComponent:
#"contactUnique6.db"]];
NSFileManager *filemgr = [NSFileManager defaultManager];
if ([filemgr fileExistsAtPath: _databasePath ] == NO)
{
const char *dbpath = [_databasePath UTF8String];
if (sqlite3_open(dbpath, &_contactDB) == SQLITE_OK)
{
char *errMsg;
const char *sql_stmt =
"CREATE TABLE IF NOT EXISTS CONTACTS (ID INTEGER PRIMARY KEY AUTOINCREMENT , NAME TEXT , ADDRESS TEXT, PHONE TEXT )";
if (sqlite3_exec(_contactDB, sql_stmt, NULL, NULL, &errMsg) != SQLITE_OK)
{
_status.text = #"Failed to create table";
}
sqlite3_close(_contactDB);
} else {
_status.text = #"Failed to open/create database";
}
}

Answer 1

i cant get your second -(IBAction)saveData:(id)sender {} method [ Third code block ]..
You said above 2 blocks are working properly so its ok.
i think you embedded the update's logic in insert's logic i.e. you embedded the update method in your saveData method..
Here i cant get what u have done, so instead of code here i m providing the template for update query, just put your code in it...
sqlite3_stmt *statement;
if(sqlite3_open(dbpath, &database_object) == SQLITE_OK)
{
NSString *sql = [NSString stringWithFormat:#"update table_name set column_name = \"%#\"", Your_value];
const char *sql_stmt = [sql UTF8String];
if(sqlite3_prepare_v2(database_object , sql_stmt, -1, &statement, NULL) != SQLITE_OK)
NSLog(#"Error while creating update statement. '%s'", sqlite3_errmsg(database_object));
if(SQLITE_DONE != sqlite3_step(statement))
NSLog(#"Error while updating. '%s'", sqlite3_errmsg(database_object));
sqlite3_finalize(statement);
}
Go with this template, i think it will work for you...