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DisplayProcessor: Show strings as strings (#27097)

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* WIP: strings and numbers

* Works in displayProcessor but units are not applied in applyFieldOverride

* removed bit

* Updated

* Added docs

* fixed typo
This commit is contained in:
Torkel Ödegaard
2020-08-25 09:50:37 +02:00
committed by GitHub
parent ddabf4ade1
commit 88fbdd6716
6 changed files with 57 additions and 17 deletions
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docs/sources/panels/field-configuration-options.md
+12 -7
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@@ -156,13 +156,13 @@ When multiple stats, fields, or series are shown, this field controls the title
Given a field with a name of Temp, and labels of {"Loc"="PBI", "Sensor"="3"}
| Expression syntax | Example | Renders to | Explanation |
| ---------------------------- | ---------------------- | --------------------------------- | ----------- |
| `${__field.displayName}` | Same as syntax | `Temp {Loc="PBI", Sensor="3"}` | Displays the field name, and labels in `{}` if they are present. If there is only one label key in the response, then for the label portion, Grafana displays the value of the label without the enclosing braces. |
| `${__field.name}` | Same as syntax | `Temp` | Displays the name of the field (without labels). |
| `${__field.labels}` | Same as syntax | `Loc="PBI", Sensor="3"` | Displays the labels without the name. |
| `${__field.labels.X}` | `${__field.labels.Loc}` | `PBI` | Displays the value of the specified label key. |
| `${__field.labels.__values}` | Same as Syntax | `PBI, 3` | Displays the values of the labels separated by a comma (without label keys). |
| Expression syntax | Example | Renders to | Explanation |
| ---------------------------- | ----------------------- | ------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `${__field.displayName}` | Same as syntax | `Temp {Loc="PBI", Sensor="3"}` | Displays the field name, and labels in `{}` if they are present. If there is only one label key in the response, then for the label portion, Grafana displays the value of the label without the enclosing braces. |
| `${__field.name}` | Same as syntax | `Temp` | Displays the name of the field (without labels). |
| `${__field.labels}` | Same as syntax | `Loc="PBI", Sensor="3"` | Displays the labels without the name. |
| `${__field.labels.X}` | `${__field.labels.Loc}` | `PBI` | Displays the value of the specified label key. |
| `${__field.labels.__values}` | Same as Syntax | `PBI, 3` | Displays the values of the labels separated by a comma (without label keys). |
If the value is an empty string after rendering the expression for a particular field, then the default display method is used.
@@ -201,6 +201,11 @@ You can also paste a native emoji in the unit picker and pick it as a custom uni
{{< docs-imagebox img="/img/docs/v66/custom_unit_burger2.png" max-width="600px" caption="Custom unit emoji" >}}
#### String unit
Grafana can sometime be too aggressive in parsing strings and displaying them as numbers. To make Grafana show the original
string create a field override and add a unit property with the `string` unit.
### Thresholds
Thresholds allow you to change the color of a field based on the value.
docs/sources/panels/visualizations/table-panel.md
+7
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@@ -26,3 +26,10 @@ Table visualizations allow you to apply:
## Display options
- **Show header -** Show or hide column names imported from your data source..
## Tips
### Display original string value
Grafana can sometime be too aggressive in parsing strings and displaying them as numbers. To make Grafana show the original
string create a field override and add a unit property with the `string` unit.