Validating the file field
Ok, it is right but visually we are showing the same messages at once. This validation must allows to show each message separately or to show them all together. it also generates a “message container” called “name”. This operation will not fail if the container doesn’t exist or it’s empty. We could show more than one message at the same time. https://github.com/EFTEC/Validation One What’s the advantadge of this library or why we are using it: It will read the value “frm_name” from POST.Like working with plain text inputs, to upload a single file you would create a model class and use an attribute of the model to keep the uploaded file instance.You should also declare a validation rule to validate the file upload. We then rely on the model validation to make sure the uploaded file is valid and save the file on the server.After all these validations have passed, the image file is saved in the target location as specified.
View Demo I have created a HTML form and provided an option to upload files.When the form is submitted, the file binaries are sent to the PHP and validated in the server side.I have checked if the uploaded file is an image and I have specified the allowed image extension, size and dimension based on which the validation is taking place.If you're writing custom code that works with files or adds them to the file manager, you definitely don't want to just import any and every file submitted to your concrete5 site.Here are some simple ways to validate files uploaded to your custom code.