- Aug 2023
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ajv.js.org ajv.js.org
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Ajv generates code to turn JSON Schemas into super-fast validation functions that are efficient for v8 optimization.
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- May 2023
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en.wikipedia.org en.wikipedia.org
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Rose therefore recommended "explicit consistency checks in a protocol ... even if they impose implementation overhead".
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- Jan 2023
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stackoverflow.com stackoverflow.com
- Sep 2022
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docs.openvalidation.io docs.openvalidation.io
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openVALIDATION enables programming of complex validation rules using natural language, such as German or English.
Tags
Annotators
URL
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rororo.readthedocs.io rororo.readthedocs.io
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"detail": [ { "loc": [ "body", "name" ], "message": "Field required" }, { "loc": [ "body", "email" ], "message": "'not-email' is not an 'email'" } ]
not complient with Problem Details, which requires
detailsto be a string
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docs.openvalidation.io docs.openvalidation.io
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x-ov-rules: culture: en rule: | the location of the applicant MUST be Dortmund
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github.com github.com
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One of the reasons I initially pushed back on the creation of a JSON Schema for V3 is because I feared that people would try to use it as a document validator. However, I was convinced by other TSC members that there were valid uses of a schema beyond validation.
annotation meta: may need new tag: fear would be used for ... valid uses for it beyond ...
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I'd also love to see a JSON schema along with the specification. I don't really trust myself to be able to accurately read the spec in its entirely, so for 2.0 I fell back heavily on using the included schemas to verify that what I'm generating is actually intelligible (and it worked, they caught many problems).
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allOf takes an array of object definitions that are validated independently but together compose a single object.
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- Jun 2022
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docs.angularjs.org docs.angularjs.org
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Lots of info on form validation
Tags
Annotators
URL
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webflow.com webflow.com
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Webflow MultiStep Form - DEMO 2
- Webflow Showcase Link: https://webflow.com/website/Advanced-Form-with-Multi-Steps-and-Conditional-Logic
- View in Webflow Designer: Link here
- Live Site Link: https://sketchzlab-test-1.webflow.io
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Webflow MultiStep Form - DEMO
.- Webflow Showcase Link: https://webflow.com/website/Multi-Step-Form-with-Input-Validation
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View In Webflow Designer: Link Here
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Live Site Link: https://brota-msf.webflow.io/variant-b
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Webflow MultiStep Form - CODE GENERATOR
Live Site: https://advanced-forms.webflow.io/
Github Documentation: https://github.com/brotame/multi-step-form
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webflow.com webflow.com
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Form Validation
- Webflow Edit Link: https://webflow.com/website/Easy-Form-Validation
- Live Page: https://easy-form-validation.webflow.io/
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- Apr 2022
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Tags
Annotators
URL
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- Feb 2022
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www.jacobsen.no www.jacobsen.no
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Hence an email address/mailbox/addr-spec is "local-part@domain"; "local-part" is composed of one or more of 'word' and periods; "word" can be an "atom" which can include anything except "specials", control characters or blank/space; and specials (the *only* printable ASCII characters [other than space, if you call space "printable"] *excluded* from being a valid "local-part") are: ()<>@,;:\".[] Therefore by the official standard for email on the internet, the plus sign is as much a legal character in the local-part of an email address as "a" or "_" or "-" or most any other symbol you see on the main part of a standard keyboard.
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There's a common design flaw on many many websites that require an email address to register; most recently I came across this bug on CNet's download.com site: for some reason they don't accept me when I try to register an email address containing a "+", and they then send me back saying my address is invalid. It isn't!
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"+" is a completely valid character in an email address; as defined by the internet messaging standard published in 1982(!) RFC 822 (page 8 & 9)... Any website claiming anything else is wrong by definition, plus they are prohibiting me and many fellow anti-spam activists from tracking where inbound spam comes from:
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- Nov 2021
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twitter.com twitter.com
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World Health Organization (WHO) on Twitter. (n.d.). Twitter. Retrieved 3 November 2021, from https://twitter.com/WHO/status/1455869992965181441
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- Sep 2021
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- Aug 2021
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softwareengineering.stackexchange.com softwareengineering.stackexchange.com
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Input check = Tests the user input, as opposed to some internal data structure or the output of a function.
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- Jul 2021
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www.reddit.com www.reddit.com
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u/dawnlxh. (2021). Reviewing peer review: does the process need to change, and how?. r/BehSciAsk. Reddit
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- Jun 2021
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psyarxiv.com psyarxiv.com
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Agarwal, A. (2021). COVID19 Stress Scale—Nepali Version. PsyArXiv. https://doi.org/10.31234/osf.io/374hx
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- May 2021
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covid19vaccine.health.ny.gov covid19vaccine.health.ny.gov
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Excelsior Pass. (n.d.). COVID-19 Vaccine. Retrieved 12 May 2021, from https://covid19vaccine.health.ny.gov/excelsior-pass
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Fisman, D., Greer, A. L., & Tuite, A. (2020). Derivation and Validation of Clinical Prediction Rule for COVID-19 Mortality in Ontario, Canada. MedRxiv, 2020.06.21.20136929. https://doi.org/10.1101/2020.06.21.20136929
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twitter.com twitter.com
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Maarten van Smeden on Twitter. (n.d.). Twitter. Retrieved 4 March 2021, from https://twitter.com/MaartenvSmeden/status/1328093246829064192
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- Mar 2021
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final-form.org final-form.org
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Your validation functions should also treat undefined and '' as the same. This is not too difficult since both undefined and '' are falsy in javascript. So a "required" validation rule would just be error = value ? undefined : 'Required'.
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Using these attributes will show validation errors, or limit what the user can enter into an <input>.
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The HTML5 form validation techniques in this post only work on the front end. Someone could turn off JavaScript and still submit jank data to a form with the tightest JS form validation.To be clear, you should still do validation on the server.
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With these JavaScript techniques, the display of server validation errors could be a lot simpler if you expect most of your users to have JS enabled. For example, Rails still encourages you to dump all validation errors at the top of a form, which is lulzy in this age of touchy UX. But you could do that minimal thing with server errors, then rely on HTML5 validation to provide a good user experience for the vast majority of your users.
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We don’t want to invalidate the input if the user removes all text. They may need a moment to think, but the invalidated state sets off an unnecessary alarm.
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stackoverflow.com stackoverflow.com
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If you would like to make “empty” include values that consist of spaces only, you can add the attribute pattern=.*\S.*.
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css-tricks.com css-tricks.com
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Positively indicate valid input values Let users know a field has been entered correctly. The browser can give us this information through the :valid CSS selector:
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stackoverflow.com stackoverflow.com
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Currently, there is no way to style those little validation tooltips.
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www.the-art-of-web.com www.the-art-of-web.com
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Website: <input type="url" name="website" required pattern="https?://.+"> Now our input box will only accept text starting with http:// or https:// and at least one additional character
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stackoverflow.com stackoverflow.com
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var applicationForm = document.getElementById("applicationForm"); if (applicationForm.checkValidity()) { applicationForm.submit(); } else { applicationForm.reportValidity(); }
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www.html5rocks.com www.html5rocks.com
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Therefore client side validation should always be treated as a progressive enhancement to the user experience; all forms should be usable even if client side validation is not present.
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It's important to remember that even with these new APIs client side validation does not remove the need for server side validation. Malicious users can easily workaround any client side constraints, and, HTTP requests don't have to originate from a browser.
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Since you have to have server side validation anyways, if you simply have your server side code return reasonable error messages and display them to the end user you have a built in fallback for browsers that don't support any form of client side validation.
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stackoverflow.com stackoverflow.com
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github.com github.com
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Responders don't use valid? to check for errors in models to figure out if the request was successful or not, and relies on your controllers to call save or create to trigger the validations.
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psyarxiv.com psyarxiv.com
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Speranza, T., Abrevaya, S., & Ramenzoni, V. C. (2021). Body Image During Quarantine; Generational Effects of Social Media Pressure on Body Appearance Perception. PsyArXiv. https://doi.org/10.31234/osf.io/y826u
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twitter.com twitter.com
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ReconfigBehSci. (2021, February 26). RT @PsyArXivBot: Body Image During Quarantine; Generational Effects of Social Media Pressure on Body Appearance Perception https://t.co/Y6… [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1366708215900176385
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- Feb 2021
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github.com github.com
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It is based on the idea that each validation is encapsulated by a simple, stateless predicate that receives some input and returns either true or false.
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URI::MailTo::EMAIL_REGEXP
First time I've seen someone create a validator by simply matching against
URI::MailTo::EMAIL_REGEXPfrom std lib. More often you see people copying and pasting some really long regex that they don't understand and is probably not loose enough. It's much better, though, to simply reuse a standard one from a library — by reference, rather than copying and pasting!!
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github.com github.com
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ActiveInteraction type checks your inputs. Often you'll want more than that. For instance, you may want an input to be a string with at least one non-whitespace character. Instead of writing your own validation for that, you can use validations from ActiveModel. These validations aren't provided by ActiveInteraction. They're from ActiveModel. You can also use any custom validations you wrote yourself in your interactions.
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Note that it's perfectly fine to add errors during execution. Not all errors have to come from type checking or validation.
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with ActiveForm-Rails, validations is the responsability of the form and not of the models. There is no need to synchronize errors from the form to the models and vice versa.
But if you intend to save to a model after the form validates, then you can't escape the models' validations:
either you check that the models pass their own validations ahead of time (like I want to do, and I think @mattheworiordan was wanting to do), or you have to accept that one of the following outcomes is possible/inevitable if the models' own validations fail:
- if you use
object.savethen it may silently fail to save - if you use
object.savethen it will fail to save and raise an error
Are either of those outcomes acceptable to you? To me, they seem not to be. Hence we must also check for / handle the models' validations. Hence we need a way to aggregate errors from both the form object (context-specific validations) and from the models (unconditional/invariant validations that should always be checked by the model), and present them to the user.
What do you guys find to be the best way to accomplish that?
I am interested to know what best practices you use / still use today after all these years. I keep finding myself running into this same problem/need, which is how I ended up looking for what the current options are for form objects today...
- if you use
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I agre with your concern. I realy prefer to do this : form.assign_attributes(hash) if form.valid? my_service.update(form) #render something else #render somthing else end It looks more like a normal controller.
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My only concern with this approach is that if someone calls #valid? on the form object afterwards, it would under the hood currently delete the existing errors on the form object and revalidate. The could have unexpected side effects where the errors added by the models passed in or the service called will be lost.
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My concern with this approach is still that it's somewhat brittle with the current implementation of valid? because whilst valid? appears to be a predicate and should have no side effects, this is not the case and could remove the errors applied by one of the steps above.
Tags
- whose responsibility is it?
- nice API
- should have no side effects
- evolved into unfortunate state and too late to fix now
- surprising behavior
- feels natural
- rails: validation: valid? has side effects
- I have a differing opinion
- missing the point
- unfortunate
- overlooking/missing something
- rails: validation
Annotators
URL
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github.com github.com
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Some developers found work arounds by using virtual attributes to # skip validators
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Any attribute in the list will be allowed, and any defined as attr_{accessor,reader,writer} will not be populated when passed in as params. This means we no longer need to use strong_params in the controllers because the form has a clear definition of what it expects and protects us by design.
strong params not needed since form object handles that responsibility.
That's the same opinion Nick took in Reform...
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github.com github.com
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Seems similar to Reform, but simpler, plays nicely with Rails
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coderwall.com coderwall.com
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If you include ActiveModel::Validations you can write the same validators as you would with ActiveRecord. However, in this case, our form is just a collection of Contact objects, which are ActiveRecord and have their own validations. When I save the ContactListForm, it attempts to save all the contacts. In doing so, each contact has its error_messages available.
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- Jan 2021
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Finally, through its reference to “the accumulated evidence,” the definition in the Standards emphasizes that obtaining validity evidence is a process rather than a sin-gle study from which a dichotomous “valid/not valid” decision is made
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psyarxiv.com psyarxiv.com
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Collins, F. E. (2020, July 6). The Contagion Fear and Threat Scale: Measuring COVID-19 Fear in Australian, Indian, and Nepali University Students. https://doi.org/10.31234/osf.io/4s65q
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discourse.computational-humanities-research.org discourse.computational-humanities-research.org
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some interesting readings mentioned here on the topic of statistical validation/evaluation in CompHum research.
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- Oct 2020
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stackoverflow.com stackoverflow.com
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we update the validation schema on the fly (we had a similar case with a validation that needs to be included whenever some fetch operation was completed)
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Final Form makes the assumption that your validation functions are "pure" or "idempotent", i.e. will always return the same result when given the same values. This is why it doesn't run the synchronous validation again (just to double check) before allowing the submission: because it's already stored the results of the last time it ran it.
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codesandbox.io codesandbox.io
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export const validationSchema = { field: { account: [Validators.required.validator, iban.validator, ibanBlackList], name: [Validators.required.validator], integerAmount: [Able to update this schema on the fly, with:
React.useEffect(() => { getDisabledCountryIBANCollection().then(countries => { const newValidationSchema = { ...validationSchema, field: { ...validationSchema.field, account: [ ...validationSchema.field.account, { validator: countryBlackList, customArgs: { countries, }, }, ], }, }; formValidation.updateValidationSchema(newValidationSchema); }); }, []); -
Meat:
validate={values => formValidation.validateForm(values)}
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www.basefactor.com www.basefactor.com
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Form Validation
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return { type: "COUNTRY_BLACK_LIST", succeeded, message: succeeded ? "" : "This country is not available" }
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Validation Schema: A Form Validation Schema allows you to synthesize all the form validations (a list of validators per form field) into a single object definition. Using this approach you can easily check which validations apply to a given form without having to dig into the UI code.
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It is easily extensible (already implemented Final Form and Formik plugin extensions).
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Form validation can get complex (synchronous validations, asynchronous validations, record validations, field validations, internationalization, schemas definitions...). To cope with these challenges we will leverage this into Fonk and Fonk Final Form adaptor for a React Final Form seamless integration.
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Just let the user fill in some fields, submit it to the server and if there are any errors notify them and let the user start over again. Is that a good approach? The answer is no, you don't want users to get frustrated waiting for a server round trip to get some form validation result.
Tags
- user experience
- nice API
- bad user experience
- form validation
- Formik
- complexity
- integration
- interoperability
- form validation library
- fonk (form validation library)
- validation schema
- adapter
- final-form
- too hard/difficult/much work to expect end-developers to write from scratch (need library to do it for them)
- react-final-form
- extensibility
Annotators
URL
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lemoncode.github.io lemoncode.github.ioFonk1
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Fonk is framework extension, and can be easily plugged into many libraries / frameworks, in this documentation you will find integrations with:
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In other words, I do not want an error to appear/disappear as a user types the text that swaps it from invalid to valid.
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codesandbox.io codesandbox.io
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codesandbox.io codesandbox.io
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codesandbox.io codesandbox.io
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formvalidation.io formvalidation.io
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Add new plugin Recaptcha3Token that sends the reCaptcha v3 token to the back-end when the form is valid
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All validators can be used independently. Inspried by functional programming paradigm, all built in validators are just functions.
I'm glad you can use it independently like:
FormValidation.validators.creditCard().validate({because sometimes you don't have a formElement available like in their "main" (?) API examples:
FormValidation.formValidation(formElement
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github.com github.com
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stackoverflow.com stackoverflow.com
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that a better and cleaner approach would be to use computed properties and a validation library that is decoupled for the UI (like hapi/joi).
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sveltesociety.dev sveltesociety.dev
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Doesn't handle:
- blur/touched
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github.com github.com
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These all come from the HTML Standard.
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www.bmj.com www.bmj.com
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Knight, S. R., Ho, A., Pius, R., Buchan, I., Carson, G., Drake, T. M., Dunning, J., Fairfield, C. J., Gamble, C., Green, C. A., Gupta, R., Halpin, S., Hardwick, H. E., Holden, K. A., Horby, P. W., Jackson, C., Mclean, K. A., Merson, L., Nguyen-Van-Tam, J. S., … Harrison, E. M. (2020). Risk stratification of patients admitted to hospital with covid-19 using the ISARIC WHO Clinical Characterisation Protocol: Development and validation of the 4C Mortality Score. BMJ, 370. https://doi.org/10.1136/bmj.m3339
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- Sep 2020
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www.nielsvandermolen.com www.nielsvandermolen.com
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setCustomValidity
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Note that we added HTML validation with specifying the types of the field (email and password). This allows the browser to validate the input.
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github.com github.com
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codedaily.io codedaily.io
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We must always return at least some validation rule. So first off if value !== undefined then we'll return our previous validation schema. If it is undefined then we'll use the yup.mixed().notRequired() which will just inform yup that nothing is required at the optionalObject level. optionalObject: yup.lazy(value => { if (value !== undefined) { return yup.object().shape({ otherData: yup.string().required(), }); } return yup.mixed().notRequired(); }),
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github.com github.com
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Mark the schema as required. All field values apart from undefined and null meet this requirement.
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The same as the mixed() schema required, except that empty strings are also considered 'missing' values.
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jamanetwork.com jamanetwork.com
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Kouzy, R., Jaoude, J. A., Garcia, C. J. G., Alam, M. B. E., Taniguchi, C. M., & Ludmir, E. B. (2020). Characteristics of the Multiplicity of Randomized Clinical Trials for Coronavirus Disease 2019 Launched During the Pandemic. JAMA Network Open, 3(7), e2015100–e2015100. https://doi.org/10.1001/jamanetworkopen.2020.15100
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www.youtube.com www.youtube.com
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JNOLive | Multiplicity of Randomized Clinical Trials for Coronavirus Disease 2019. (2020, July 14). https://www.youtube.com/watch?v=H-MWPqgLUvA&feature=youtu.be
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codechips.me codechips.me
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Form validation is hard. That's why there are so many different form handling libraries for the popular web frameworks. It's usually not something that is built-it, because everyone has a different need and there is no one-fit-all solution.
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- Aug 2020
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github.com github.com
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Triggers error messages to render after a field is touched, and blurred (focused out of), this is useful for text fields which might start out erronous but end up valid in the end (i.e. email, or zipcode). In these cases you don't want to rush to show the user a validation error message when they haven't had a chance to finish their entry.
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Triggers error messages to show up as soon as a value of a field changes. Useful for when the user needs instant feedback from the form validation (i.e. password creation rules, non-text based inputs like select, or switches etc.)
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html.spec.whatwg.org html.spec.whatwg.org
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Constraints
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github.com github.com
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The bindings are two-way because any HTML5 contraint validation errors will be added to the Final Form state, and any field-level validation errors from Final Form will be set into the HTML5 validity.customError state.
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Local file Local file
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So when we ask users to answer questions that deal with the future, we have to keep in mind the context in which they’re answering. They can tell us about a feature they think will make their lives better, but user val-idation will always be necessary to make sure that past user’s beliefs about future user are accurate.
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stackoverflow.com stackoverflow.com
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It's worth pointing out that filenames can contain a newline character on many *nix systems. You're unlikely to ever run into this in the wild, but if you're running shell commands on untrusted input this could be a concern
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- Jul 2020
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amp.dev amp.dev
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To verify that your structured data is correct, many platforms provide validation tools. In this tutorial, we'll validate our structured data with the Google Structured Data Validation Tool.
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github.com github.com
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Currently, if we have an invalid mouse association that was previously saved at some point in the past (eg. with mouse.save! validate: false)
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Pulido, Edgar Guillermo. ‘Validation to Spanish Version of the COVID-19 Stress Scale’. Preprint. PsyArXiv, 17 July 2020. https://doi.org/10.31234/osf.io/rcqx3.
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www.clinicalmicrobiologyandinfection.com www.clinicalmicrobiologyandinfection.com
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Meyer, B., Torriani, G., Yerly, S., Mazza, L., Calame, A., Arm-Vernez, I., Zimmer, G., Agoritsas, T., Stirnemann, J., Spechbach, H., Guessous, I., Stringhini, S., Pugin, J., Roux-Lombard, P., Fontao, L., Siegrist, C.-A., Eckerle, I., Vuilleumier, N., & Kaiser, L. (2020). Validation of a commercially available SARS-CoV-2 serological immunoassay. Clinical Microbiology and Infection, 0(0). https://doi.org/10.1016/j.cmi.2020.06.024
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stackoverflow.com stackoverflow.com
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There's not a way to do this. What you could do instead is use Cloud Functions HTTP triggers as an API for writing data. It could check the conditions you want, then return a response that indicates what's wrong with the data the client is trying to write. I understand this is far from ideal, but it might be the best option you have right now
it's definitely far from ideal :(
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- May 2020
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psyarxiv.com psyarxiv.com
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Prem, R., Kubicek, B., Uhlig, L., Baumgartner, V. C., & Korunka, C. (2020). Development and Validation of a Scale to Measure Cognitive Demands of Flexible Work [Preprint]. PsyArXiv. https://doi.org/10.31234/osf.io/mxh75
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nvlpubs.nist.gov nvlpubs.nist.gov
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(Thus, for these curves, the cofactor is always h = 1.)
This means there is no need to check if the point is in the correct subgroup.
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psyarxiv.com psyarxiv.com
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McElroy, E., Patalay, P., Moltrecht, B., Shevlin, M., Shum, A., Creswell, C., & Waite, P. (2020, May 8). Demographic and health factors associated with pandemic anxiety in the context of COVID-19. https://doi.org/10.31234/osf.io/2eksd
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- Apr 2020
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www.rubydoc.info www.rubydoc.info
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As mentioned in StateMachines::Machine#state, you can define behaviors, like validations, that only execute for certain states. One important caveat here is that, due to a constraint in ActiveRecord's validation framework, custom validators will not work as expected when defined to run in multiple states.
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psyarxiv.com psyarxiv.com
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Fucci, E., Baquedano, C., Abdoun, O., Deroche, J., & Lutz, A. (2020, April 21). Validation of a set of stimuli to investigate the effect of attributional processes on social motivation in within-subject experiments. https://doi.org/10.31234/osf.io/nbdj4
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wpvip.com wpvip.com
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1- Validation: you “validate”, ie deem valid or invalid, data at input time. For instance if asked for a zipcode user enters “zzz43”, that’s invalid. At this point, you can reject or… sanitize. 2- sanitization: you make data “sane” before storing it. For instance if you want a zipcode, you can remove any character that’s not [0-9] 3- escaping: at output time, you ensure data printed will never corrupt display and/or be used in an evil way (escaping HTML etc…)
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This style of validation most closely follows WordPress’ whitelist philosophy: only allow the user to input what you’re expecting.
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download.oracle.com download.oracle.com
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What Is Input Validation and Sanitization? Validation checks if the input meets a set of criteria (such as a string contains no standalone single quotation marks). Sanitization modifies the input to ensure that it is valid (such as doubling single quotes).
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stackoverflow.com stackoverflow.com
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stackoverflow.com stackoverflow.com
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psyarxiv.com psyarxiv.com
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Wolf, M. G. (2020, April 26). Survey Uses May Influence Survey Responses. https://doi.org/10.31234/osf.io/c4hd6
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sciencebusiness.net sciencebusiness.net
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Imperial researchers develop lab-free COVID-19 test with results in less than an hour. (n.d.). Science|Business. Retrieved April 20, 2020, from https://sciencebusiness.net/network-updates/imperial-researchers-develop-lab-free-covid-19-test-results-less-hour
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github.com github.com
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github.com github.com
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github.com github.com
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Prefer over this: https://github.com/michaelbanfield/devise-pwned_password
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