正则表达式使用Laravel 4的Fluent或Eloquent搜索并替换表中的所有行

Question

What's the best way to use Fluent or Eloquent to search for a pattern in a MySQL database and replace it?

I've seen in the Laravel forums that you should be able to do a regex selection like so

// Searching for the word "mypattern"...
Page::where('words', 'regexp', DB::raw('/\bmypattern\b/'))->get();

But I've tried this method and it doesn't seem to select the rows I'm after. In any case, actually don't want to JUST select-- I'd like to actually do a search and replace with regex .

What's the best way to do this with the options provided by Laravel?

Answer 1

I don't believe that 'regexp' is a valid query operator in Laravel 4.

It seems that Taylor has actually made a comment specific to this issue on Github under issue #838 , and he suggests using whereRaw instead of where.

Here is an SO question regarding MySQL Regex Replace, which may help you to implement this.

Answer 2

You could possibly use a MySQL User Defined Function (UDF) for what you're asking. Note that using a UDF is not always compatible but might be good enough to do for your case.

The UDF package mod will implement your regular expression as a User Defined Function and is supported by the regular expression REGEXP operator.

See MySQL regular expression functions

Another option would be to dump your data and do a find and replace.