mirror of
https://github.com/squidfunk/mkdocs-material.git
synced 2024-06-14 11:52:32 +03:00
286 lines
7.0 KiB
Markdown
286 lines
7.0 KiB
Markdown
---
|
||
icon: material/graph-outline
|
||
---
|
||
|
||
# Diagrams
|
||
|
||
Diagrams help to communicate complex relationships and interconnections between
|
||
different technical components, and are a great addition to project
|
||
documentation. Material for MkDocs integrates with [Mermaid.js], a very
|
||
popular and flexible solution for drawing diagrams.
|
||
|
||
[Mermaid.js]: https://mermaid-js.github.io/mermaid/
|
||
|
||
## Configuration
|
||
|
||
<!-- md:version 8.2.0 -->
|
||
|
||
This configuration enables native support for [Mermaid.js] diagrams. Material
|
||
for MkDocs will automatically initialize the JavaScript runtime when a page
|
||
includes a `mermaid` code block:
|
||
|
||
``` yaml
|
||
markdown_extensions:
|
||
- pymdownx.superfences:
|
||
custom_fences:
|
||
- name: mermaid
|
||
class: mermaid
|
||
format: !!python/name:pymdownx.superfences.fence_code_format
|
||
```
|
||
|
||
No further configuration is necessary. Advantages over a custom integration:
|
||
|
||
- [x] Works with [instant loading] without any additional effort
|
||
- [x] Diagrams automatically use fonts and colors defined in `mkdocs.yml`[^1]
|
||
- [x] Fonts and colors can be customized with [additional style sheets]
|
||
- [x] Support for both, light and dark color schemes – _try it on this page!_
|
||
|
||
[^1]:
|
||
While all [Mermaid.js] features should work out-of-the-box, Material for
|
||
MkDocs will currently only adjust the fonts and colors for flowcharts,
|
||
sequence diagrams, class diagrams, state diagrams and entity relationship
|
||
diagrams. See the section on [other diagrams] for more information why this
|
||
is currently not implemented for all diagrams.
|
||
|
||
[instant loading]: ../setup/setting-up-navigation.md#instant-loading
|
||
[additional style sheets]: ../customization.md#additional-css
|
||
[other diagrams]: #other-diagram-types
|
||
|
||
## Usage
|
||
|
||
### Using flowcharts
|
||
|
||
[Flowcharts] are diagrams that represent workflows or processes. The steps
|
||
are rendered as nodes of various kinds and are connected by edges, describing
|
||
the necessary order of steps:
|
||
|
||
```` markdown title="Flow chart"
|
||
``` mermaid
|
||
graph LR
|
||
A[Start] --> B{Error?};
|
||
B -->|Yes| C[Hmm...];
|
||
C --> D[Debug];
|
||
D --> B;
|
||
B ---->|No| E[Yay!];
|
||
```
|
||
````
|
||
|
||
<div class="result" markdown>
|
||
|
||
``` mermaid
|
||
graph LR
|
||
A[Start] --> B{Error?};
|
||
B -->|Yes| C[Hmm...];
|
||
C --> D[Debug];
|
||
D --> B;
|
||
B ---->|No| E[Yay!];
|
||
```
|
||
|
||
</div>
|
||
|
||
[Flowcharts]: https://mermaid-js.github.io/mermaid/#/flowchart
|
||
|
||
### Using sequence diagrams
|
||
|
||
[Sequence diagrams] describe a specific scenario as sequential interactions
|
||
between multiple objects or actors, including the messages that are exchanged
|
||
between those actors:
|
||
|
||
```` markdown title="Sequence diagram"
|
||
``` mermaid
|
||
sequenceDiagram
|
||
autonumber
|
||
Alice->>John: Hello John, how are you?
|
||
loop Healthcheck
|
||
John->>John: Fight against hypochondria
|
||
end
|
||
Note right of John: Rational thoughts!
|
||
John-->>Alice: Great!
|
||
John->>Bob: How about you?
|
||
Bob-->>John: Jolly good!
|
||
```
|
||
````
|
||
|
||
<div class="result" markdown>
|
||
|
||
``` mermaid
|
||
sequenceDiagram
|
||
autonumber
|
||
Alice->>John: Hello John, how are you?
|
||
loop Healthcheck
|
||
John->>John: Fight against hypochondria
|
||
end
|
||
Note right of John: Rational thoughts!
|
||
John-->>Alice: Great!
|
||
John->>Bob: How about you?
|
||
Bob-->>John: Jolly good!
|
||
```
|
||
|
||
</div>
|
||
|
||
[Sequence diagrams]: https://mermaid-js.github.io/mermaid/#/sequenceDiagram
|
||
|
||
### Using state diagrams
|
||
|
||
[State diagrams] are a great tool to describe the behavior of a system,
|
||
decomposing it into a finite number of states, and transitions between those
|
||
states:
|
||
|
||
```` markdown title="State diagram"
|
||
``` mermaid
|
||
stateDiagram-v2
|
||
state fork_state <<fork>>
|
||
[*] --> fork_state
|
||
fork_state --> State2
|
||
fork_state --> State3
|
||
|
||
state join_state <<join>>
|
||
State2 --> join_state
|
||
State3 --> join_state
|
||
join_state --> State4
|
||
State4 --> [*]
|
||
```
|
||
````
|
||
|
||
<div class="result" markdown>
|
||
|
||
``` mermaid
|
||
stateDiagram-v2
|
||
state fork_state <<fork>>
|
||
[*] --> fork_state
|
||
fork_state --> State2
|
||
fork_state --> State3
|
||
|
||
state join_state <<join>>
|
||
State2 --> join_state
|
||
State3 --> join_state
|
||
join_state --> State4
|
||
State4 --> [*]
|
||
```
|
||
|
||
</div>
|
||
|
||
[State diagrams]: https://mermaid-js.github.io/mermaid/#/stateDiagram
|
||
|
||
### Using class diagrams
|
||
|
||
[Class diagrams] are central to object oriented programing, describing the
|
||
structure of a system by modelling entities as classes and relationships between
|
||
them:
|
||
|
||
```` markdown title="Class diagram"
|
||
``` mermaid
|
||
classDiagram
|
||
Person <|-- Student
|
||
Person <|-- Professor
|
||
Person : +String name
|
||
Person : +String phoneNumber
|
||
Person : +String emailAddress
|
||
Person: +purchaseParkingPass()
|
||
Address "1" <-- "0..1" Person:lives at
|
||
class Student{
|
||
+int studentNumber
|
||
+int averageMark
|
||
+isEligibleToEnrol()
|
||
+getSeminarsTaken()
|
||
}
|
||
class Professor{
|
||
+int salary
|
||
}
|
||
class Address{
|
||
+String street
|
||
+String city
|
||
+String state
|
||
+int postalCode
|
||
+String country
|
||
-validate()
|
||
+outputAsLabel()
|
||
}
|
||
```
|
||
````
|
||
|
||
<div class="result" markdown>
|
||
|
||
``` mermaid
|
||
classDiagram
|
||
Person <|-- Student
|
||
Person <|-- Professor
|
||
Person : +String name
|
||
Person : +String phoneNumber
|
||
Person : +String emailAddress
|
||
Person: +purchaseParkingPass()
|
||
Address "1" <-- "0..1" Person:lives at
|
||
class Student{
|
||
+int studentNumber
|
||
+int averageMark
|
||
+isEligibleToEnrol()
|
||
+getSeminarsTaken()
|
||
}
|
||
class Professor{
|
||
+int salary
|
||
}
|
||
class Address{
|
||
+String street
|
||
+String city
|
||
+String state
|
||
+int postalCode
|
||
+String country
|
||
-validate()
|
||
+outputAsLabel()
|
||
}
|
||
```
|
||
|
||
</div>
|
||
|
||
[Class diagrams]: https://mermaid-js.github.io/mermaid/#/classDiagram
|
||
|
||
### Using entity-relationship diagrams
|
||
|
||
An [entity-relationship diagram] is composed of entity types and specifies
|
||
relationships that exist between entities. It describes inter-related things in
|
||
a specific domain of knowledge:
|
||
|
||
```` markdown title="Entity-relationship diagram"
|
||
``` mermaid
|
||
erDiagram
|
||
CUSTOMER ||--o{ ORDER : places
|
||
ORDER ||--|{ LINE-ITEM : contains
|
||
LINE-ITEM {
|
||
string name
|
||
int pricePerUnit
|
||
}
|
||
CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
|
||
```
|
||
````
|
||
|
||
<div class="result" markdown>
|
||
|
||
``` mermaid
|
||
erDiagram
|
||
CUSTOMER ||--o{ ORDER : places
|
||
ORDER ||--|{ LINE-ITEM : contains
|
||
LINE-ITEM {
|
||
string name
|
||
int pricePerUnit
|
||
}
|
||
CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
|
||
```
|
||
|
||
</div>
|
||
|
||
[entity-relationship diagram]: https://mermaid-js.github.io/mermaid/#/entityRelationshipDiagram
|
||
|
||
### Other diagram types
|
||
|
||
Besides the diagram types listed above, [Mermaid.js] provides support for
|
||
[pie charts], [gantt charts], [user journeys], [git graphs] and
|
||
[requirement diagrams], all of which are not officially supported by Material
|
||
for MkDocs. Those diagrams should still work as advertised by [Mermaid.js], but
|
||
we don't consider them a good choice, mostly as they don't work well on mobile.
|
||
|
||
[pie charts]: https://mermaid-js.github.io/mermaid/#/pie
|
||
[gantt charts]: https://mermaid-js.github.io/mermaid/#/gantt
|
||
[user journeys]: https://mermaid-js.github.io/mermaid/#/user-journey
|
||
[git graphs]: https://mermaid-js.github.io/mermaid/#/gitgraph
|
||
[requirement diagrams]: https://mermaid-js.github.io/mermaid/#/requirementDiagram
|