Codeigniter catch database connection error

Login Username: Password: Lost Password? Remember me. Home Forums Search Members Help. Thread Modes. Posts: 5 Threads: 1 Joined: Nov Reputation: 0. Hi I try to catch an error if something with the database operations goes wrong. What do I have to do to catch an error if database operation went wrong?

Model PHP Code:.

CodeIgniter – how to catch DB errors?

Posts: Threads: 1 Joined: Aug Reputation: You will need to check in your PHP code, in case it's true or false. If it's false you will need to send a different status header. And that's the default status header. Posts: 7 Threads: 1 Joined: Nov Reputation: 0.

codeigniter catch database connection error

I think I'm strugling over some basic missunderstanding. Even it was not able to delete it. But why? From my point of view it should only return true if the record has been deleted. PHP Code:. So what type of things are it failing on? Else it should return TRUE.

InsiteFX Posting Freak. Posts: 3, Threads: 76 Joined: Oct Reputation: What did you Try? W hat did you Expect? Joined CodeIgniter Community Skype: insitfx. Contact Us Return to Top Lite mode. Linear Mode. Threaded Mode. View a Printable Version. Subscribe to this thread. Add Poll to this thread. Send thread to a friend.

Lost Password? Thread Modes How to catch database operation errors.When retrieving data you will typically assign the query to your own variable, like this:. It simply lets you submit a query. Most users will rarely use this function. If you have configured a database prefix and would like to prepend it to a table name for use in a native SQL query for example, then you can use the following:. If for any reason you would like to change the prefix programatically without needing to create a new connection, you can use this method:.

In many databases it is advisable to protect table and field names - for example with backticks in MySQL. Query Builder queries are automatically protectedhowever if you need to manually protect an identifier you can use:.

codeigniter catch database connection error

Although the Query Builder will try its best to properly quote any field and table names that you feed it, note that it is NOT designed to work with arbitrary user input.

DO NOT feed it with unsanitized user data. This function will also add a table prefix to your table, assuming you have a prefix specified in your database config file. To enable the prefixing set TRUE boolean via the second parameter:. CodeIgniter has three methods that help you do this:. Use the function like this:. Because this method escapes partial strings that you would wrap in quotes yourself, it cannot automatically add the ESCAPE '!

Bindings enable you to simplify your query syntax by letting the system put the queries together for you. Consider the following example:. The question marks in the query are automatically replaced with the values in the array in the second parameter of the query function. The secondary benefit of using binds is that the values are automatically escaped, producing safer queries. If you need to get the last error that has occurred, the error method will return an array containing its code and message.

Important Although the Query Builder will try its best to properly quote any field and table names that you feed it, note that it is NOT designed to work with arbitrary user input.Turning off error reporting is often mentioned as a standard security precaution when switching to a production environment. If someone is rummaging through your site, trying to find vulnerabilities, this severely limits the information they have at their disposal.

It merely fogs the windows to your infrastructure a little. Your CodeIgniter site is launched or is on the verge of doing so, but how do you turn off the errors? There are three Codeigniter files that need to be modified:. In the root directory of your CodeIgniter install, there is an index. Set it to zero:. CodeIgniter version 2. It is good practice to design your functions to withstand user meddling and the occasional malformed link.

If the function in your controller requires a parameter, and then queries the database, wrap it in a conditional to make sure the passed parameter is set, and in the right format. If you have a controller that is displaying database-driven items that may disappear, a innocent visitor may have come across it from an old link. Why not put in a nice redirect to a helpful landing page or a helpful ?

codeigniter catch database connection error

This leaves you open for SQL Injection. The first forum link has some example code that illustrates how to fail gracefully in your model, view, and controller:. CSS Secrets: Better Solutions to Everyday Web Design Problems is a practical and modular look at many of the unique challenges you'll encounter during front-end development. Well-designed, and easy to pick up for any intermediate to advanced front-end dev looking to pick up some tips and tricks, and honing the processes used to figure them out.

Eloquent JavaScript: A Modern Introduction to Programming is an engaging and well-formatted overview of JavaScript, complete with example projects and helpful diagrams. It's easy to read—not too dense, with readable type—and covers many subjects. The revised edition covers some of the newer features of JavaScript, including: class notation, arrow functions, iterators, async functions, template strings, and block scope. In it, an IT manager is confronted with the seemingly impossible task of turning around a project that's over-budget and past deadlines in 90 days, or else his department will be outsourced.

The morals and takeaways from this story about DevOps and lean principles will stick with you. I extend the exceptions class in codeigniter and send the error message to my email, then display a friendly message to the user without revealing sensitive info about the error. There are three Codeigniter files that need to be modified: 1. The first forum link has some example code that illustrates how to fail gracefully in your model, view, and controller: Codeigniter Forum Post — Write your code to not trust the user Codeigniter User Guide — Error Handling Codeigniter User Guide — Security.Posted by: admin November 19, Leave a comment.

Is there a way to make CI throw an exception when it encounters a DB error instead of displaying a message like:. NOTE: I only want this to happen in one controller. If you need to get the last error that has occured, the error method will return an array containing its code and message. This is a trick I used without touching the CI db classes.

Leave your debug on and in your error view file, throw an exception. Since the view file will be called, the error will always get thrown as an exception, you may later add different views for different environment. It is better for finding error. After completing your site. Close the error messages using it. Then, turn all your database debug on:.

Tags: phpcodeigniter. February 22, Php Leave a comment. Questions: What are the differences between htmlspecialchars and htmlentities. When should I use one or the other? Is there another way to ca Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Add menu. CodeIgniter — how to catch DB errors?

In Codeigniter 3. Leave a Reply Cancel reply Your email address will not be published.When retrieving data you will typically assign the query to your own variable, like this:. It simply lets you submit a query. Most users will rarely use this function. If you have configured a database prefix and would like to prepend it to a table name for use in a native SQL query for example, then you can use the following:. If for any reason you would like to change the prefix programmatically without needing to create a new connection you can use this method:.

Solve database error in codeigniter ( group_start ) and upgrade Database version of CI

In many databases, it is advisable to protect table and field names - for example with backticks in MySQL. Query Builder queries are automatically protectedbut if you need to manually protect an identifier you can use:. Although the Query Builder will try its best to properly quote any field and table names that you feed it. Note that it is NOT designed to work with arbitrary user input. DO NOT feed it with unsanitized user data. This function will also add a table prefix to your table, assuming you have a prefix specified in your database config file.

To enable the prefixing set TRUE boolean via the second parameter:. CodeIgniter has three methods that help you do this:. Use the function like this:. Because this method escapes partial strings that you would wrap in quotes yourself, it cannot automatically add the ESCAPE '!

Bindings enable you to simplify your query syntax by letting the system put the queries together for you. Consider the following example:. The question marks in the query are automatically replaced with the values in the array in the second parameter of the query function.

The secondary benefit of using binds is that the values are automatically escaped producing safer queries. Instead of using the question mark to mark the location of the bound values, you can name the bindings, allowing the keys of the values passed in to match placeholders in the query:. If you need to get the last error that has occurred, the error method will return an array containing its code and message.

Most database engines support some form of prepared statements, that allow you to prepare a query once, and then run that query multiple times with new sets of data. This eliminates the possibility of SQL injection since the data is passed to the database in a different format than the query itself. When you need to run the same query multiple times it can be quite a bit faster, too.

Since the Query Builder and Database connections already handle escaping the data for you, the safety aspect is already taken care of for you. There will be times, though, when you need to ability to optimize the query by running a prepared statement, or prepared query. This can be easily done with the prepare method. This takes a single parameter, which is a Closure that returns a query object.

This is handled the easiest by using the Query Builder to run a query.Login Username: Password: Lost Password? Remember me. Home Forums Search Members Help. Thread Modes.

ComputingFroggy Junior Member. Posts: 33 Threads: 13 Joined: Feb Reputation: 0. The CSV file contains table columns names that are used to create insert statements.

If there's an error in the table colums, the insert fails and generates an error. However, I am not able to catch that error, and I get a system message. I would like to be able to catch that error to be able to process it to be able to send an email to indicate the insert failure. Any idea how to do this? Cheers, L u. Diederik Senior Member.

Posts: Threads: 0 Joined: Jan Reputation: You should validate the results. If it's valid then you can insert the data safely, if its not valid you could skip that file, only the row or send oud an email etc. Posts: 75 Threads: 4 Joined: Nov Reputation: 4. What about exception handling? Website Find. Diederik: the column name was just an example.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Is there a way to make CI throw an exception when it encounters a DB error instead of displaying a message like:. NOTE: I only want this to happen in one controller. In the other controllers, I'm happy for it to display the DB error messages.

If you need to get the last error that has occured, the error method will return an array containing its code and message. I know this thread is old, but just in case there's someone else having this issue. This is a trick I used without touching the CI db classes. Leave your debug on and in your error view file, throw an exception.

Since the view file will be called, the error will always get thrown as an exception, you may later add different views for different environment. Then, turn all your database debug on:. Learn more.

CodeIgniter and Exceptions

CodeIgniter - how to catch DB errors? Ask Question. Asked 8 years, 5 months ago. Active 5 months ago. Viewed k times. Hamza Zafeer 1, 7 7 gold badges 22 22 silver badges 29 29 bronze badges. Active Oldest Votes. Lucius 13 3 3 bronze badges.

Oskenso Kashi Oskenso Kashi 7 7 silver badges 10 10 bronze badges. How do these prevent the messages from displaying? Why is not possible to use Exception instead :-? These methods have been removed in CodeIgniter version 3. RayJ RayJ 13 13 silver badges 11 11 bronze badges.

I see that setting it to false will show db error more details, which is not expected in production, right? I'm confused. First we need to step back to the main index. So the line in the database. In Codeigniter 3. CodeGodie CodeGodie Wonderful, you saved my day. This answer is incorrect.

Imp Apr 10 '18 at See stackoverflow. Kabir Hossain Kabir Hossain 1, 18 18 silver badges 26 26 bronze badges. After completing your site. Disable debugging of errors.


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