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@title User Guide: Customizing Forms
@group userguide
Guide to prefilling and customizing forms in Phabricator applications.
Overview
========
In most applications, objects are created by clicking a "Create" button from
the main list view, and edited by clicking an "Edit" link from the main detail
view. For example, you create a new task by clicking "Create Task", and edit it
by clicking "Edit Task".
The forms these workflows use can be customized to accommodate a number of
different use cases. In particular:
**Prefilling**: You can use HTTP GET parameters to prefill fields or copy
fields from another object. This is a lightweight way to create a link with
some fields set to initial values. For example, you might want to create a
link to create a task which has some default projects or subscribers.
**Custom Forms**: You can create custom forms which can have default values;
locked, hidden, and reordered fields; and additional instructions. This can let
you make specialized forms for creating certain types of objects, like a
"New Bug Report" form with extra help text or a "New Security Issue" form with
locked policies.
**"Create" Defaults**: You can change the default form available to users for
creating objects, or provide multiple default forms for them to choose between.
This can let you simplify or specialize the creation process.
**"Edit" Defaults**: You can change the default form users are given to edit
objects, which will also affect their ability to take inline actions in the
comment form if you're working in an application which supports comments. This
can streamline the edit workflow for less experienced users.
Anyone can use prefiling, but you must have permission to configure an
application in order to modify the application's forms. By default, only
administrators can configure applications.
The remainder of this document walks through configuring these features in
greater detail.
Supported Applications
======================
These applications currently support form customization:
| Application | Support |
|-------------|---------|
| Maniphest | Full
| Paste | Full
| Owners | Full
This documentation is geared toward use in Maniphest because customizing task
creation flows is the most common use case for many of these features, but the
features discussed here work in any application with support.
These features first became available in December 2015. Additional applications
will support them in the future.
Internally, this infrastructure is called `ApplicationEditor`, and the main
component is `EditEngine`. You may see technical documentation, changelogs, or
internal discussion using these terms.
Prefilling
==========
You can prefill the fields in forms by providing HTTP parameters. For example,
if a form has a "Projects" field, you can generally prefill it by adding a
`projects` parameter to the URI like this:
```
https://your.install.com/application/edit/?projects=skunkworks
```
The parameters available in each application vary, and depend on which fields
the application supports.
For full documentation on a particular form, navigate to that form (by
selecting the "Create" or "Edit" action in the application) and then use
{nav Actions > Show HTTP Parameters} to see full details on which parameters
you can use and how to specify them.
You can also use the `template` parameter to copy fields from an existing
object that you have permission to see. Which fields are copied depend on the
application, but usually content fields (like a name or title) are not copied
while other fields (like projects, subscribers, and object states) are.
The {nav Show HTTP Parameters} page has a full list of which fields will be
copied.
You can combine the `template` parameter with other prefilling. The `template`
will act first, then prefilling will take effect. This allows you to overwrite
template values with prefilled values.
Some use cases for this include:
**Lightweight Integrations**: If you want to give users a way to file tasks from
an external application, this is an easy way to get a basic integration
working. For example, you might have a tool for reviewing error logs in
production that has a link to "File a Bug" about an error. The link could
prefill the `title`, `body` and `projects` fields with details about the log
message and a link back into the external tool.
**Convenience**: You can create lightweight, ad-hoc links that make taking
actions a little easier for users. For example, if you're sending out an email
about a change you just made to a lot of people, you could include instructions
like "If you run into any issues, assign a task to me with details: ..." and
include a link which prefills you as the task assignee.
**Searchbar Commands**: If you use a searchbar plugin which gives you shortcut
commands, you can write a custom shortcut so a command like "bug ..." can
quickly redirect you to a prefilled form.
Creating New Forms
==================
Beyond prefilling forms with HTTP parameters, you can create and save form
configurations. This is more heavyweight than prefilling and allows you to
customize, streamline, or structure a workflow more heavily.
You must be able to configure an application in order to manage its forms.
Form configurations can have special names (like "New Bug Report") and
additional instruction text, and may prefill, lock, hide, and reorder fields.
Prefilling and templating still work with custom form configurations, but only
apply to visible fields.
To create a new form configuration, navigate to an existing form via "Create"
or "Edit" and choose {nav Actions > View Form Configurations}. This will show
you a list of current configurations.
You can also edit existing configurations, including the default configuration.
You can use {nav Create Form} from this screen to create a new configuration.
After setting some basic information you will be able to lock, hide, and
reorder form fields, as well as set defaults.
Clicking {nav Use Form} will take you to the permanent URI for this form. You
can link to this form from elsewhere to take the user directly to your
custom flow.
You can adjust defaults using {nav Change Default Values}. These defaults are
saved with the form, and do not require HTTP parameter prefilling. However,
they work in conjunction with prefilling, and you can use prefilling or
templating to overwrite the defaults for visible fields.
If you set a default value for a field and lock or hide the field, the default
you set will still be respected and can not be overridden with templating
or prefilling. This allows you to force certain forms to create tasks with
specific field values, like projects or policies.
You can also set a view policy for a form. Only users who are able to view the
form can use it to create objects.
There are some additional options ("Mark as Create Form" and
"Mark as Edit Form") which are more complicated and explained in greater
detail later in this document.
Some use cases for this include:
**Tailoring Workflows**: If you have certain intake workflows like
"New Bug Report" or "New Security Issue", you can create forms for them with
more structure than the default form.
You can provide detailed instructions and links to documentation in the
"Preamble" for the form configuration. You might use this to remind users about
reporting guidelines, help them fill out the form correctly, or link to other
resources.
You can hide fields that aren't important to simplify the workflow, or reorder
fields to emphasize things that are important. For example, you might want to
hide the "Priority" field on a bug report form if you'd like all bugs to come
in at the default priority before they are triaged.
You can set default view and edit policies, and optionally lock or hide those
fields. This allows you to create a form that is locked to certain policy
settings.
**Simplifying Forms**: If you rarely (or never) use some object fields, you can
create a simplified form by hiding the fields you don't use regularly, or
hide these fields completely from the default form.
Changing Creation Defaults
=========================
You can control which form or forms are presented to users by default when
they go to create new objects in an application.
Using {nav Mark as "Create" Form} from the detail page for a form
configuration, you can mark a form to appear in the create menu.
When a user visits the application, Phabricator finds all the form
configurations that are:
- marked as "create" forms; and
- visible to the user based on policy configuration; and
- enabled.
If there is only one such form, Phabricator renders a single "Create" button.
(If there are zero forms, it renders the button but disables it.)
If there are several such forms, Phabricator renders a dropdown which allows
the user to choose between them.
You can reorder these forms by returning to the configuration list and using
{nav Reorder Create Forms} in the left menu.
This logic is also used to select items for the global "Quick Create" menu
in the main menu bar.
Some use cases for this include:
**Simplification**: You can modify the default form to reorder fields, add
instructions, or hide fields you never use.
**Multiple Intake Workflows**: If you have multiple distinct intake workflows
like "New Bug Report" and "New Security Issue", you can mark several forms
as "Create" forms and users will be given a choice between them when they go
to create a task.
These flows can provide different instructions and defaults to help users
provide the desired information correctly.
**Basic and Advanced Workflows**: You can create a simplified "Basic" workflow
which hides or locks some fields, and a separate "Advanced" workflow which
has all of the fields.
If you do this, you can also restrict the visibility policy for the "Advanced"
form to experienced users. If you do, newer users will see a button which
takes them to the basic form, while advanced users will be able to choose
between the basic and advanced forms.
Changing Editing Defaults
=========================
You can control which form users are taken to when they click "Edit" on an
object detail page.
Using {nav Mark as "Edit" Form} from the detail page for a form configuration,
you can mark a form as a default edit form.
When a user goes to edit an object, they are taken to the first form which is:
- marked as an "edit" form; and
- visible to them; and
- enabled.
You can reorder forms by going up one level and using {nav Reorder Edit Forms}
in the left menu. This will let you choose which forms have precedence if
a user has access to multiple edit forms.
The default edit form also controls which which actions are available inline
in the "Comment" form at the bottom of the detail page, for applications which
support comments. If you hide or lock a field, corresponding actions will not
be available.
Some use cases for this include:
**Simplification**: You can modify the default form to reorder fields, add
instructions, or hide fields you never use.
By default, applications tend to have just one form, which is both an edit form
and a create form. You can split this into two forms (one edit form and one
create form) and then simplify the create form without affecting the edit
form.
You might do this if there are some fields you still want access to that you
never modify when creating objects. For example, you might always want to
create tasks with status "Open", and just hide that field from from the create
form completely. A separate edit form can still give you access to these fields
if you want to adjust them later.
**Basic and Advanced Workflows**: You can create a basic edit form (with fewer
fields available) and an advanced edit form, then restrict access to the
advanced form to experienced users.
By ordering the forms as "Advanced", then "Basic", and applying a view policy
to the "Advanced" form, you can send experienced users to the advanced form
and less experienced users to the basic form.
For example, you might use this to hide policy controls or task priorities from
inexperienced users.
Understanding Policies
======================
IMPORTANT: Simplifying workflows by restricting access to forms and fields does
**not** enforce policy controls for those fields.
The configurations described above which simplify workflows are advisory, and
are intended to help users complete workflows quickly and correctly. A user who
has very limited access to an application through forms will generally still be
able to use other workflows (like Conduit, Herald, Workboards, email, and other
applications and integrations) to directly or indirectly modify fields.
For example, even if you lock a user out of all the forms in an application
that have a "Subscribers" field, they can still add subscribers indirectly by
using `@username` mentions.
We do not currently plan to change this or introduce enforced, platform-wide
field-level policy controls. These form customization features are generally
aimed at helping well-intentioned but inexperienced users complete workflows
quickly and correctly.
Disabling Form Configurations
=============================
You can disable a form configuration from the form configuration details screen,
by selecting {nav Disable Form}.
Disabled forms do not appear in any menus by default, and can not be used to
create or edit objects.
Use Case: Specialized Report Form
=================================
A project might want to provide a specialized bug report form for a specific
type of issue. For example, if you have an Android application, you might have
an internal link in that application for employees to "Report a Bug".
A simple way to do this would be to link to the default form and use HTTP
parameter prefilling to set a project. You might end up with a link like this
one:
```
https://your.install.com/maniphest/task/edit/?projects=android
```
A slightly more advanced method is to create a template task, then use it to
prefill the form. For example, you might set some projects, subscribers, and
custom field values on the template task. Then have the application link to
the a URI that prefills using the template:
```
https://your.install.com/maniphest/task/edit/?template=123
```
This is a little easier to use, and lets you update the template later if you
want to change anything about the defaults that the new tasks are created
with.
An even more advanced method is to create a new custom form configuration.
You could call this something like "New Android Bug Report". In addition to
setting defaults, you could lock, hide, or reorder fields so that the form
only presents the fields that are relevant to the workflow. You could also
provide instructions to help users file good reports.
After customizing your form configuration, you'd link to the {nav Use Form}
URI, like this:
```
https://your.install.com/maniphest/task/edit/form/123/
```
You can also combine this with templating or prefilling to further specialize
the flow.
Use Case: Simple Report Flow
============================
An open source project might want to give new users a simpler bug report form
with fewer fields and more instructions.
To do this, create a custom form and configure it so it has only the relevant
fields and includes any instructions. Once it looks good, mark it as a "Create"
form.
The "Create Task" button should now change into a menu and show both the
default form and the new simpler form, as well as in the global "Quick Create"
menu in the main menu bar.
If you prefer the fields appear in a different order, use
{nav Reorder Create Forms} to adjust the display order. (You could also rename
the default creation flow to something like "Create Advanced Task" to guide
users toward the best form).
Use Case: Basic and Advanced Users
==================================
An open source project or a company with a mixture of experienced and less
experienced users might want to give only some users access to adjust advanced
fields like "View Policy" and "Edit Policy" when creating tasks.
Before configuring things like this, make sure you review "Understanding
Policies" above.
To do this, first customize four forms:
- Basic Create
- Advanced Create
- Basic Edit
- Advanced Edit
You can customize these however you'd like.
The "Advanced" forms should have more fields, while the "Basic" forms should
be simpler. You may want to add additional instructions to the "Basic Create"
form.
Then:
- Mark the two "Create" forms as create forms.
- Mark the two "Edit" forms as edit forms.
- Limit the visibility of the two "Advanced" forms to only advanced users
(for example, "Members of Project: Elite Strike Force").
- Use {nav Reorder Edit Forms} to make sure the "Advanced" edit form is at
the top of the list. The first visible form on this list will be used, so
this makes sure advanced users see the advanced edit form.
Basic users should now only have access to basic fields when creating, editing,
and commenting on tasks, while advanced users will retain full access.
Use Case: Security Issues
=========================
If you want to make sure security issues are reported with the correct
policies, you can create a "New Security Issue" form. On this form, prefill the
View and Edit policies and lock or hide them, then lock or hide any additional
fields (like projects or subscribers) that you don't want users to adjust. You
might use a custom policy like this for both the View and Edit policies:
> Allow: Members of Project "Security"
> Allow: Task Author
> Deny all other users
This will make it nearly impossible for users to make policy mistakes, and will
prevent other users from observing these tasks indirectly through Herald rules.
You should review "Understanding Policies" above before pursuing this. In
particular, note that the author may still be able to leak information about
the report like this:
- if they have access to a full-power edit form, they can edit the task
//after// creating it and open the policies; or
- regardless of their edit form access, they can use the Conduit API to
change the task policy; or
- regardless of any policy controls in Phabricator, they can screenshot,
print, or forward email about the task to anyone; or
- regardless of any technical controls in any software, they can decline to
report the issue to you in the first place and sell it on the black market
instead.
This goals of this workflow are to:
- prevent other users from observing security issues improperly through
mechanisms like Herald; and
- prevent mistakes by well-meaning reporters who are unfamiliar with
the software.
It is **not** aimed at preventing reporters who are already in possession of
information from //intentionally// disclosing that information, since they have
many other channels by which to do this anyway and no software can ever prevent
it.
Use Case: Upstream
==================
This section describes the upstream configuration circa December 2015. The
current configuration may not be exactly the same as the one described below.
We run an open source project with a small core team, a moderate number
of regular contributors, and a large public userbase. Access to the upstream
Phabricator instance is open to the public.
Although our product is fairly technical, we receive many bug reports and
feature requests which are of very poor quality. Some users also ignore all the
documentation and warnings and use the upstream instance as a demo/test
instance to click as many buttons as they can.
The goals of our configuration are:
- Provide highly structured "New Bug Report" and "New Feature Request"
workflows which make things as easy as possible to get right, in order
to improve the quality of new reports.
- Separate the userbase into "basic" and "advanced" users. Give the
basic users simpler, more streamlined workflows, to make expectations
more clear, improve report quality, and limit collateral damage from
testing and fiddling.
To these ends, we've configured things like this:
**Community Project**: Advanced users are added to a "Community" project, which
gives them more advanced access. Advanced forms are "Visible To: Members of
Project Community".
**Basic and Advanced Edit**: We have basic and advanced task edit forms.
Members of the community project get access to the advanced one, while other
users only have access to the basic one.
**Bug, Feature and Advanced Create**: We have "New Bug", "New Feature" and
"New Advanced Task" creation forms.
The advanced form is the standard creation form, and is only accessible to
community members.
The basic forms have fewer fields, and each form provides tailored instructions
which point users at relevant documentation to help them provide good reports.
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