by Add Komoncharoensiri, Director of Technical Services at 4D Inc
Here we go with another set of tips and tricks.
As you know, 4D Knowledge Base is a library of information about 4D technology where weekly tech tips and monthly tech notes are actively published. If you missed the last tips on the KB, that’s fine; here is a compilation from the past few weeks.
This blog post covers 16 tips:
- Upgrade old applications incrementally
- Table field data entry controls properties can be found in .4DCatalog file in project mode
- Quick File Creation Locations
- Unable to Switch Back to Design Mode from Application Mode
- Handling print jobs in headless mode
- Run new HTTP requests in the Application process to trigger callbacks
- Current Table Form Error Loop
- A quick search for method dependencies
- Assure to declare parameter $1 in 4DAction method to avoid web server error 500
- Maintaining Tables with Many Deletes and Creates
- Modify HTTPRequest default callback functions
- Moving a block of code up or down within the method editor
- Application Mode Is Not Accessible
- When to use simple objects vs. cs.className objects in HTTPRequest
- Checking whether 4D is successfully running in headless mode
- Utility method for converting a character to an HTML Entity Number