forms

问题 I am working my django projects based on html form submission method . But recently, I came to know that there exist django forms. Please let me know what is the difference between them. 回答1: Writing a form in Django will ultimately produce a HTML form. The Django form can be bound to a model which will then apply validation to the form based on the model structure, this saves on having to manually code the validation and also helps keep everything aligned when changes are made to the model.

问题 I have a simple PHP Array called $categories that looks like this: Array ( [Closed] => P1000 [Open] => P1001 [Pending] => P1002 [In Progress] => P1003 [Requires Approval] => P1004 ) I've got a simple HTML form that has a drop down list for one field that I would like to use the array for the options, however I only want it do show the text (e.g. Closed, Open, Pending, In Progress and Requires Approval) as the options in the drop down list but store the associated key for that option (e.g.

问题 I have a simple PHP Array called $categories that looks like this: Array ( [Closed] => P1000 [Open] => P1001 [Pending] => P1002 [In Progress] => P1003 [Requires Approval] => P1004 ) I've got a simple HTML form that has a drop down list for one field that I would like to use the array for the options, however I only want it do show the text (e.g. Closed, Open, Pending, In Progress and Requires Approval) as the options in the drop down list but store the associated key for that option (e.g.

问题 I have a form that uses final-form-arrays. The form works and validation works, however, when i make a state change inside the component, it resets all my values. I was able to replicate the issue with the same example that react-final-form-arrays provides: https://codesandbox.io/embed/react-final-form-field-arrays-om6p6 I added a button to toggle a state change. Essentially, just try filling values in the form, and then change the state. The form will reset, and i cant figure out why that is

问题 I ve read a few question on the site similar to this but couldn't really take anything from them. I have a form that gets submitted, if there are errors, I notify the user of the errors above the form and display the form below that for them to correct it. This is all good and dandy except that they have to re enter all of their information again. I want the information to stay, and them to only have to fix / reenter the field that the mistake was in. Here is my handling file: <?php include

问题 I do want to create a custom control which does not include any input. Whenever the control changes, I do want to save the complete form. Our current approach uses the form-changed-event like this: <form #demoForm="ngForm" (change)="onChange()"> <custom-input name="someValue" [(ngModel)]="dataModel"> </custom-input> </form> As you can see, we use the "change"-event to react to any change in the form. This works fine as long as we have inputs, checkboxes, ... as controls. But our custom

问题 I need to collect data from a visitor in an HTML form and then have them print a document with the appropriate fields pre-populated. They'll need to have a couple of signatures on the document, so it has to be printed. The paper form already exists, so one idea was to scan it in, with nothing filled out, as an image. I would then have the HTML form data print out using CSS for positioning and using the blank scanned form as a background image. A better option, I would think, would be to

问题 I'm using bound forms for the user to update information on new or existing customers. Right now I'm using a Add New Record macro on the submit button (because I'm not sure how to add or save a new record through VBA). I added a before update event (using VBA) to have the user confirm they want to save changes before exiting the form. For some reason this is overriding the add record button and now users cannot add new record until exiting the forms. How can I use VBA to add new customer

问题 I'm using bound forms for the user to update information on new or existing customers. Right now I'm using a Add New Record macro on the submit button (because I'm not sure how to add or save a new record through VBA). I added a before update event (using VBA) to have the user confirm they want to save changes before exiting the form. For some reason this is overriding the add record button and now users cannot add new record until exiting the forms. How can I use VBA to add new customer

问题 What is the differences between form_widget and form_row ? I know that in form_row i can add label in attributes, and form_widget render all fields. are there others difference? 回答1: From documentation: form_widget Renders the HTML widget of a given field. If you apply this to an entire form or collection of fields, each underlying form row will be rendered. form_row Renders the "row" of a given field, which is the combination of the field's label, errors and widget. So main difference is