1 @title Spaces User Guide
4 Guide to the Spaces application.
9 The Spaces application makes it easier to manage large groups of objects which
10 share the same access policy. For example:
12 - An organization might make a space for a project in order to satisfy a
13 contractual obligation to limit access, even internally.
14 - An open source organization might make a space for work related to
15 internal governance, to separate private and public discussions.
16 - A contracting company might make spaces for clients, to separate them from
18 - A company might create a spaces for consultants, to give them limited
19 access to only the resources they need to do their work.
20 - An ambitious manager might create a space to hide her team's work from her
21 enemies at the company, that she might use the element of surprise to later
24 Phabricator's access control policies are generally powerful enough to handle
25 these use cases on their own, but applying the same policy to a large group
26 of objects requires a lot of effort and is error-prone.
28 Spaces build on top of policies and make it easier and more reliable to
29 configure, review, and manage groups of objects with similar policies.
35 Spaces are optional, and are inactive by default. You don't need to configure
36 them if you don't plan to use them. You can always set them up later.
38 To activate Spaces, you need to create at least two spaces. Create spaces from
39 the web UI, by navigating to {nav Spaces > Create Space}. By default, only
40 administrators can create new spaces, but you can configure this in the
41 {nav Applications} application.
43 The first space you create will be a special "default" space, and all existing
44 objects will be shifted into this space as soon as you create it. Spaces you
45 create later will be normal spaces, and begin with no objects inside them.
47 Create the first space (you may want to name it something like "Default" or
48 "Global" or "Public", depending on the nature of your organization), then
49 create a second space. Usually, the second space will be something like
50 "Secret Plans" and have a more restrictive "Visible To" policy.
56 Once you've created at least two spaces, you can begin using them.
58 Application UIs will change for users who can see at least two spaces, opening
59 up new controls which let them work with spaces. They will now be able to
60 choose which space to create new objects into, be able to move objects between
61 spaces, and be able to search for objects in a specific space or set of spaces.
63 In list and detail views, objects will show which space they're in if they're
64 in a non-default space.
66 Users with access to only one space won't see these controls, even if many
67 spaces exist. This simplifies the UI for users with limited access.
73 Briefly, spaces affect policies like this:
75 - Spaces apply their view policy to all objects inside the space.
76 - Space policies are absolute, and stronger than all other policies. A
77 user who can not see a space can **never** see objects inside the space.
78 - Normal policies are still checked: spaces can only reduce access.
80 When you create a space, you choose a view policy for that space by using the
81 **Visible To** control. This policy controls both who can see the space, and
82 who can see objects inside the space.
84 Spaces apply their view policy to all objects inside the space: if you can't
85 see a space, you can never see objects inside it. This policy check is absolute
86 and stronger than all other policy rules, including policy exceptions.
88 For example, a user can never see a task in a space they can't see, even if
89 they are an admin and the author and owner of the task, and subscribed to the
90 task and the view and edit policies are set to "All Users", and they created
91 the space originally and the moon is full and they are pure of heart and
92 possessed of the noblest purpose. Spaces are impenetrable.
94 Even if a user satisfies the view policy for a space, they must still pass the
95 view policy on the object: the space check is a new check in addition to any
96 check on the object, and can only limit access.
98 The edit policy for a space only affects the space itself, and is not applied
99 to objects inside the space.
105 If you no longer need a space, you can archive it by choosing
106 {nav Archive Space} from the detail view. This hides the space and all the
107 objects in it without deleting any data.
109 New objects can't be created into archived spaces, and existing objects can't
110 be shifted into archived spaces. The UI won't give you options to choose
111 these spaces when creating or editing objects.
113 Additionally, objects (like tasks) in archived spaces won't be shown in most
114 search result lists by default. If you need to find objects in an archived
115 space, use the `Spaces` constraint to specifically search for objects in that
118 You can reactivate a space later by choosing {nav Activate Space}.
124 After activating spaces, you can choose a space when configuring inbound email
125 addresses in {nav Applications}.
127 Spaces affect policies for application email just like they do for other
128 objects: to see or use the address, you must be able to see the space which
131 Objects created from inbound email will be created in the space the email is
135 Limitations and Caveats
136 =======================
138 Some information is shared between spaces, so they do not completely isolate
139 users from other activity on the install. This section discusses limitations
140 of the isolation model. Most of these limitations are intrinsic to the policy
141 model Phabricator uses.
143 **Shared IDs**: Spaces do not have unique object IDs: there is only one `T1`,
144 not a separate one in each space. It can be moved between spaces, but `T1`
145 always refers to the same object. In most cases, this makes working with
146 spaces simpler and easier.
148 However, because IDs are shared, users in any space can look at object IDs to
149 determine how many objects exist in other spaces, even if they can't see those
150 objects. If a user creates a new task and sees that it is `T5000`, they can
151 know that there are 4,999 other tasks they don't have permission to see.
153 **Globally Unique Values**: Some values (like usernames, email addresses,
154 project hashtags, repository callsigns, and application emails) must be
157 As with normal policies, users may be able to determine that a `#yolo` project
158 exists, even if they can't see it: they can try to create a project using the
159 `#yolo` hashtag, and will receive an error if it is a duplicate.
161 **User Accounts**: Spaces do not apply to users, and can not hide the existence
164 For example, if you are a contracting company and have Coke and Pepsi as
165 clients, the CEO of Coke and the CEO of Pepsi will each be able to see that the
166 other has an account on the install, even if all the work you are doing for
167 them is separated into "Coke" and "Pepsi" spaces.