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[GH-ISSUE #736] Custom Parameter with validation #614

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opened 2026-02-28 01:26:13 +03:00 by kerem · 7 comments

kerem commented

2026-02-28 01:26:13 +03:00

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Originally created by @marsrakete on GitHub (Sep 17, 2018).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/736

Kindly asking for Feature Request

I was implementing WiFiManagerParameter for a project. Works really good! Until I discovered, that I accidentally left the MQTT-field empty. Which made it quite hard to change afterwards (had to switch of the Wifi-router to be able to connect to the ESP).

My suggestion is to integrate some basic validation method like:

field is required, not empty.
field must contain IP address
field must contain mail address
field must be validated by custom callback
...

If validation fails, the first input form is re-displayed, with error message(s).
Of course very rudimentary.

Hence new parameter like:
WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40, REQUIRED | IP_ADDRESS);

(Bit-operation not required, just an idea. Might be confusing)

WiFimanager Branch/Release:

[x ] Master
Development

Esp8266/Esp32:

[x ] ESP8266
ESP32

Originally created by @marsrakete on GitHub (Sep 17, 2018). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/736 Kindly asking for Feature Request I was implementing WiFiManagerParameter for a project. Works really good! Until I discovered, that I accidentally left the MQTT-field empty. Which made it quite hard to change afterwards (had to switch of the Wifi-router to be able to connect to the ESP). My suggestion is to integrate some basic validation method like: - field is required, not empty. - field must contain IP address - field must contain mail address - field must be validated by custom callback ... If validation fails, the first input form is re-displayed, with error message(s). Of course very rudimentary. Hence new parameter like: WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40, REQUIRED | IP_ADDRESS); (Bit-operation not required, just an idea. Might be confusing) **WiFimanager Branch/Release:** - [x ] Master - [ ] Development **Esp8266/Esp32:** - [x ] ESP8266 - [ ] ESP32

kerem

2026-02-28 01:26:13 +03:00

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kerem commented

2026-02-28 01:26:14 +03:00

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@tablatronix commented on GitHub (Sep 17, 2018):

just add'required attributes to the html..

@tablatronix commented on GitHub (Sep 17, 2018): just add`'required` attributes to the html..

kerem commented

2026-02-28 01:26:14 +03:00

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@tablatronix commented on GitHub (Sep 18, 2018):

add param validation callbacks

@tablatronix commented on GitHub (Sep 18, 2018): - [ ] add param validation callbacks

kerem commented

2026-02-28 01:26:14 +03:00

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@marsrakete commented on GitHub (Sep 18, 2018):

The "required" attribute is not sufficient and requires manual changes in the WiFiManager.h, which is likely impractical when using the IDE and the library manager.
I guess the callback-method is the most practical way.

@marsrakete commented on GitHub (Sep 18, 2018): The "required" attribute is not sufficient and requires manual changes in the WiFiManager.h, which is likely impractical when using the IDE and the library manager. I guess the callback-method is the most practical way.

kerem commented

2026-02-28 01:26:14 +03:00

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@tablatronix commented on GitHub (Sep 18, 2018):

well not really, the param class allows custom html attributes
WiFiManagerParameter::WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom) {

also development branch contains all html in a strings.h file not source code

@tablatronix commented on GitHub (Sep 18, 2018): well not really, the param class allows custom html attributes `WiFiManagerParameter::WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom) { ` also development branch contains all html in a strings.h file not source code

kerem commented

2026-02-28 01:26:14 +03:00

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@marsrakete commented on GitHub (Sep 18, 2018):

Wow, development branch has greatly evolved!
Somehow I wasn’t aware about the custom html parameter. Now I read the class code, I understand what you’ve done by overloading.

Thank you. I’ll be patiently awaiting new master release. Issue may be closed.

@marsrakete commented on GitHub (Sep 18, 2018): Wow, development branch has greatly evolved! Somehow I wasn’t aware about the custom html parameter. Now I read the class code, I understand what you’ve done by overloading. Thank you. I’ll be patiently awaiting new master release. Issue may be closed.

kerem commented

2026-02-28 01:26:14 +03:00

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@tablatronix commented on GitHub (Sep 18, 2018):

for example
WiFiManagerParameter custom_ipaddress("input_ip", "input IP", "", 19,"pattern='\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}'");

you can also pass in the entire parameter as custom html
with WiFiManagerParameter custom_html("<p>This Is Custom HTML</p>");

@tablatronix commented on GitHub (Sep 18, 2018): for example ` WiFiManagerParameter custom_ipaddress("input_ip", "input IP", "", 19,"pattern='\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}'"); ` you can also pass in the entire parameter as custom html with `WiFiManagerParameter custom_html("<p>This Is Custom HTML</p>");`

kerem commented

2026-02-28 01:26:14 +03:00

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@tablatronix commented on GitHub (Oct 5, 2018):

you can now add custom param child classes #741

@tablatronix commented on GitHub (Oct 5, 2018): you can now add custom param child classes #741