The 5 Most Common Mistakes SAPUI5 Developers Make

Always see an error in your developer console? Below are the top 5 most common mistakes committed by SAPUI5 developers.
But first, do check out the some of the best practices in SAPUI5 Part1ย and Part 2 to surely avoid these mistakes. ๐Ÿ™‚

1. “sap is not defined”

Cause:

The SAPUI5 runtime library, cannot be found or loaded by the application, due to incorrect directory or URL.

"<yoastmark

Solution:

Replace the resource path in the index.html.

Solution: Correct resource path
Solution: Correct resource path

2. “failed to load Component.js”

Cause:

The library cannot load the target Component.js or the file is missing.

Failed to load component
Failed to load component

Solution:

Find all instance of the namespace in your project and make sure to follow the correct namespace.

Solution: Fix component namespace
Solution: Fix component namespace

3. “Controller couldn’t be instantiated”

Cause:

There are possible root causes for this error, and SAPUI5 doesn’t display enough information to debug.
First, is to check the controller’s namespace. Make sure it matches the view’s controllerName. Then, make sure there are no syntax errors in the controller.js.

View controller name
View controller name
Controller namespace
Controller namespace

Solution:

Apply the correct namespace to the controller file.

4. “failed to load from: SyntaxError: Unexpected token )”

Cause:

This happens if you forgot to close a block statement, which causes the rest of the script open-ended.

Unexpected token
Unexpected token

Solution:

You can fix the syntax errors using the code highlighter of SAP Web IDE. In this case, we have a missing "}" at line 8.

Solution: Fix syntax error
Solution: Fix syntax error

5. Translation entry does not show on the view

Cause:

The first probable cause is that the i18n property is not properly maintained. Secondly, it could be possible that the i18ndoes not match with the property in the XML file.

i18n property does not match
i18n property does not match

The i18n property is missing.

Missing i18n
Missing i18n

The property does not match the XML view property.

i18n mismatch
i18n mismatch

Solution:

Correctly maintain the i18n property file.

 

Is there any mistake you usually commit that’s not on the list? share it below.

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What are the topics do you want to discuss next time? do let us know and leave a comment below. ๐Ÿ™‚

 


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